CN102883357A - Cell interrupt compensation method used in self-organizing network - Google Patents
Cell interrupt compensation method used in self-organizing network Download PDFInfo
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- CN102883357A CN102883357A CN2012103311249A CN201210331124A CN102883357A CN 102883357 A CN102883357 A CN 102883357A CN 2012103311249 A CN2012103311249 A CN 2012103311249A CN 201210331124 A CN201210331124 A CN 201210331124A CN 102883357 A CN102883357 A CN 102883357A
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Abstract
The invention relates to a cell interrupt compensation method used in a self-organizing network and belongs to the technical field of 4G (fourth generation) communication. The method comprises the following steps: selecting an internal compensation cell and an external compensation cell from adjacent cells and determining regulating parameters of the compensation cells; sequentially regulating the parameters of the internal compensation cell, acquiring an increment of an internal compensation performance function according to information reported by a user and carrying out parameter updating; after the internal regulation iteration is stopped, carrying out external regulation stage; sequentially regulating parameters of the external compensation cell, acquiring an increment of an external compensation performance function according to information reported by the user and carrying out parameter updating; and after the external regulation iteration is stopped, finishing the compensation. According to the invention, after the cell interrupt is detected, the user performance of an interrupted cell can be automatically subjected to effective compensation, the performance loss of the user in the compensated cell is also reduced, the network self-curing can be effectively carried out, the labor participation is reduced, and the operating cost is reduced.
Description
Technical field
The invention belongs to the 4G communication technical field, particularly a kind of cell outage compensation method for self-organizing network.
Background technology
Along with the development of next generation wireless communication network, network configuration becomes increasingly complex, and it is more and more that network parameter becomes, and calculating becomes increasingly complex, and therefore needs to drop into more personnel and network is managed the cost of the operator that can increase sharply like this.Self-organizing network (Self-Organizing Network:SON) arises at the historic moment.The final purpose of SON can be carried out the network autonomous management exactly substantially, increases network capacity, reduces manually participating in, and cuts operating costs, and wherein SON has three large functions: self-configuring, self-optimizing and certainly healing.
Be applied to the situation that the residential quarter occurs interrupting because of emergency situations from curing (Self-Healing), can under this burst scene, in time keep estate performance (residential quarter covers and communication quality).Then this residential quarter is in interrupt status (Cell Outage) when all subscriber equipmenies (User Equipment:UE) of a cell coverage area can't obtain any Radio Resource and maybe can only obtain few resources, claims this residential quarter for interrupting the residential quarter.The reason that causes this interruption may be hardware or software failure, and power supply supply discontinuity or network connection are interrupted, perhaps configuration error.Can detect fast and automatically, exactly the fault that affects network performance by certainly curing technology, and automatically recover or isolated fault equipment, be in continuous, high-quality communications status to guarantee the user.
The cell outage compensation refers to that in one or more residential quarters hardware and software failure having occured causes unavailable, and can't configure in the situation about recovering by this cell parameter, by adjusting the parameter of neighbor cell base station, the coverage of extending neighboring cell makes it to compensate at short notice the covering of interrupting in the residential quarter.In the current research for the residential quarter compensation, arrange for different parameters on the one hand the Different Effects of compensation performance is studied, the people such as M.Amirijoo mainly exchange the parameters such as line configuration all day, received power grade and pilot transmit power the compensation performance of interrupting the residential quarter have been launched research in the paper " Effectiveness of cell outage compensation in LTE networks " that CCNC ' 2011 delivers; Also there is certain research compensation method aspect for cell outage in addition, for example with simulated annealing (Simulated Annealing Algorithm), genetic algorithm (Genetic Algorithm) etc. is incorporated in the cell outage compensation, the main thought of introducing this class optimized algorithm is by different ways of search under possible parameter configuration, find as far as possible optimum allocation plan, but this class methods used search times is long and computation complexity is high, therefore in order to recover timely and effectively to interrupt the user performance loss of residential quarter, the present invention proposes the online compensation method that a kind of user performance of bringing for cell outage descends.
Summary of the invention
The objective of the invention is for overcoming the weak point of prior art, a kind of cell outage compensation method for the SON network is proposed, this method can be after detecting the cell outage generation, and can't configure in the situation about recovering by this cell parameter, by adjusting the parameter of neighbor cell base station, the user performance loss compensates fast and effectively in the residential quarter to interrupting, reduce simultaneously to compensate the performance loss of user in the residential quarter, can effectively carry out network from curing, reduce artificial the participation, cut operating costs.
The present invention propose a kind of cell outage compensation method for the SON network, the method comprises: select internal compensation residential quarter and external compensation residential quarter from adjacent cell, determine the adjustment parameter of compensation residential quarter; Adjust successively the internal compensation cell parameter, according to reporting of user information acquisition internal compensation performance function increment, carry out parameter and upgrade; After the internal adjustment iteration stopping, carry out the outside adjusting stage; Adjust successively the external compensation cell parameter, according to reporting of user information acquisition external compensation performance function increment, carry out parameter and upgrade; After adjusting iteration stopping, the outside finishes compensation.
Characteristics of the present invention and beneficial effect:
Characteristics of the present invention are: the method mainly comprises internal adjustment and outside adjusting stage, by the internal adjustment in the method, can be effectively to interrupting user in the residential quarter since the performance loss that interruption causes recover fast and effectively; Adjust by the outside, the performance loss that can effectively interrupt causing the residential quarter owing to compensation to user in the internal compensation residential quarter effectively recovers.The method is a kind of effective online compensation method, is simple and easy to realize, can reduce fast and effectively the loss that cell outage is brought, and reduces manual intervention, promotes the user and experiences.
Advantage of the present invention and effect:
(1) the method is a kind of automatic on-line method of adjustment, can automatically carry out real-time effective adjustment according to the network operation situation of reality;
(2) by the internal adjustment in the method, take the spectrum efficiency of interrupting user in the residential quarter as optimization aim, can be to interrupting user in the residential quarter since the performance loss of interrupting causing fast and effeciently recovered;
(3) adjust by the outside in the method, take the spectrum efficiency of interrupting user in residential quarter and the compensation residential quarter as optimization aim, can be effectively to user in the compensation residential quarter since the performance loss that compensation interruption residential quarter be caused effectively be recovered;
(4) each in the method is taken turns and is all used greedy strategy to carry out the optimal policy selection in the adjustment, is simple and easy to realize, reasonably selects simultaneously fast and effeciently restorability of parameter.
Embodiment
Cell outage compensation method in a kind of SON network that the present invention proposes is described in detail as follows in conjunction with the embodiments:
Cell outage compensation method in a kind of SON network that the present invention proposes is characterized in that, the method comprises: select internal compensation residential quarter and external compensation residential quarter from adjacent cell, determine the adjustment parameter of compensation residential quarter; Adjust successively the internal compensation cell parameter, according to reporting of user information acquisition internal compensation performance function increment, carry out parameter and upgrade; After the internal adjustment iteration stopping, carry out the outside adjusting stage; Adjust successively the external compensation cell parameter, according to reporting of user information acquisition external compensation performance function increment, carry out parameter and upgrade; After adjusting iteration stopping, the outside finishes compensation.
The method specifically may further comprise the steps:
1) initialization: from the adjacent cell that interrupts the residential quarter, determine internal compensation residential quarter and external compensation residential quarter, determine to adjust parameter, the line parameter initialization of going forward side by side;
1-1) determine the internal compensation residential quarter: centered by the interruption residential quarter, in the neighbor cell that interrupts the residential quarter, position and loading condition according to neighbor cell are selected N internal compensation residential quarter, N is that positive integer (decide according to the application scenarios of reality by the size of this value, this value is larger, and the compensation residential quarter is more, and compensation performance is better, amount of calculation is larger, and general span is 1 ~ 3); And be numbered from small to large j ID number according to the internal compensation residential quarter, and wherein j represents j internal compensation residential quarter, the j value is j=1, and 2 ... N;
Wherein the implementation method of the concrete selection of internal compensation residential quarter is: select 2N distance to interrupt nearest residential quarter, residential quarter from the neighbor cell that interrupts the residential quarter, therefrom select the lightest N of a load residential quarter as the internal compensation residential quarter again;
1-2) determine the external compensation residential quarter: respectively by internal compensation cell number j, centered by each internal compensation residential quarter, from the neighbor cell (except interrupting the residential quarter) of each internal compensation residential quarter, position and loading condition according to neighbor cell are selected wherein j external compensation residential quarter number that the internal compensation residential quarter is corresponding of M (j) expression of the individual external compensation of M (j) residential quarter, M (j) is that positive integer (decide according to the application scenarios of reality by the size of this value, this value is larger, the compensation residential quarter is more, compensation performance is better, amount of calculation is larger, general span is 1 ~ 3), the concrete implementation method of selecting is:
From the neighbor cell of j internal compensation residential quarter, select nearest residential quarter, j internal compensation residential quarter of the individual distance of 2M (j), therefrom select again the individual residential quarter of the lightest M of load (j) as the external compensation residential quarter of j internal compensation residential quarter;
1-3) compensate internally in the Downtilt, antenna azimuth, base station transmitting power, uplink receiving signal power, handoff parameter of residential quarter and select a parameter as adjusting parameter T
1_1(concrete system of selection is decided according to concrete application scenarios, according to this parameter the compensation ability of interrupting the residential quarter is decided, and adjusts the coverage that Downtilt can effectively increase the residential quarter, generally selects Downtilt); (concrete system of selection is decided according to concrete application scenarios as adjusting parameter to select a parameter successively from the Downtilt of the external compensation residential quarter of each internal compensation residential quarter, antenna azimuth, base station transmitting power, uplink receiving signal power, handoff parameter, according to this parameter the compensation ability of interrupting the residential quarter is decided, adjusting Downtilt can effectively increase the coverage of residential quarter, generally select Downtilt), wherein the adjustment Parametric Representation of the external compensation residential quarter of j internal compensation residential quarter is T
2_j
1-4) generate 1 internal adjustment matrix A
1_1With N the outside matrix A of adjusting
2_j, and exchange the long and step-length adjustment factor of synchronizing and carry out initialization, specifically comprise:
1-4-1) generate 1 internal adjustment matrix A according to internal compensation residential quarter number and external compensation residential quarter number
1_1With N the outside matrix A of adjusting
2_j, wherein internal adjustment matrix and the outside matrix element of adjusting matrix be-1,0,1, respectively expression reduce, constant and increase adjustment parameter, internal adjustment matrix A
1_1With j the outside matrix A of adjusting
2_jSize is respectively (3
N-1) * N and (3
M (j)-1) * M (j);
Internal adjustment matrix A wherein
1_1The execution mode that generates is: with 3
NAs the row of internal adjustment matrix, wherein, the optional value of vector element is that { 1,0,1}, forming size is (3 to the different non-vanishing vectors that-1 length is N respectively
N-1) * the internal adjustment matrix A of N
1_1
Wherein matrix A is adjusted in j outside
2_jThe execution mode that generates is: with 3
M (j)The different non-vanishing vectors that-1 length is M (j) are respectively as j the outside row of adjusting matrix, and wherein, the optional value of vector element be that { 1,0,1}, the formation size is (3
M (j)-1) * matrix A is adjusted in the outside of M (j)
2_j
1-4-2) determine the initial adjustment step delta T of internal compensation residential quarter
1_1(0) and step-length adjust factor K
1_1:
Wherein, initially adjust step delta T
1_1(0) doubly adjusts parameter T for P
1_1Minimum adjustable unit, wherein, P is that (minimum adjustable unit is the adjustment parameter T that selects to positive integer
1_1Can allow the minimum value of adjustment); Step-length is adjusted factor K
1_10 (occurrence is by the concrete adjustment parameter T that selects
1_1Characteristic determine);
Initial adjustment step-length and the step-length of 1-4-3) determining respectively the external compensation residential quarter of each internal compensation residential quarter are adjusted the factor, and wherein the initial adjustment step-length of the external compensation residential quarter of j internal compensation residential quarter is expressed as Δ T
2_j(0) and step-length to adjust factor representation be K
2_j
Wherein, initially adjust step delta T
2_j(0) doubly adjusts parameter T for P
2_jMinimum adjustable unit, wherein, P is that (minimum adjustable unit is the adjustment parameter T that selects to positive integer
2_jCan allow the minimum value of adjustment); Step-length is adjusted factor K
2_j0 (occurrence is by the concrete adjustment parameter T that selects
2_jCharacteristic determine);
2) internal adjustment: parameter initialization, and use the internal adjustment matrix A
1_1To adjusting parameter T
1_1Carry out repeatedly iteration adjustment, the adjustment parameter T after obtaining internal adjustment and finishing
1_1Behind the final adjustment parameter value of value as the internal compensation residential quarter, enter outside the adjustment, specifically may further comprise the steps:
2-1) the adjustment parameter T of N internal compensation residential quarter of record
1_1Initial value T
1_1(0) as the 1st initial value of taking turns iteration adjustment, wherein, T
1_1(0) for length be the vector of N, each element value represents the adjustment initial parameter value of each internal compensation residential quarter successively; And Signal to Interference plus Noise Ratio (the Signal to Interference plus Noise Ratio:SINR) reporting information of the interruption community user that obtains according to statistics, calculate internal compensation performance function (Inner Compensation Performance Function:ICPF) initial value ICPF (0,0) as the 1st initial value of taking turns iteration adjustment;
ICPF(0,0)=λ×SE
edge(outage_cell)(0,0)+(1-λ)×SE
avrg(outage_cell)(0,0) (1)
Wherein, SE
Edge (outage_cell)Residential quarter inward flange user's spectrum efficiency, SE are interrupted in expression
Avrg (outage_cell)The average spectral efficiency (ase) of user in the residential quarter is interrupted in expression, and λ is the compromise factor, 0＜λ＜1;
2-2) use the internal adjustment matrix A
1_1Adjustment parameter T to the internal compensation residential quarter
1_1Carry out many wheels (3
N-1) inferior iteration adjustment, the adjustment parameter T after obtaining internal adjustment and finishing
1_1Value enters outside the adjustment as the final adjustment parameter value of internal compensation residential quarter, and wherein the concrete steps of k wheel iteration adjustment are as follows:
The corresponding element that 2-2-1) will adjust respectively every delegation of step-length and internal adjustment matrix multiplies each other, and takes turns with this and to adjust parameter T
1_1Initial value (this initial value is the adjustment parameter value of last round of iteration) addition is adjusted rear new adjustment parameter value, as once adjusting; Wherein, the i time in formula (2) the expression k wheel iteration adjustment adjusted the internal compensation residential quarter and adjusted parameter T
1_1The calculation expression of (k, i);
T
1_1(k,i)=T
1_1(k,0)+ΔT
1_1(k)×A
1_1(i,:) (2)
In the formula (2), i=1...3
N-1, A
1_1(i :) expression internal adjustment matrix A
1_1I capable;
2-2-2) according to the adjustment parameter T that obtains each time
1_1Value, adjust the internal compensation cell parameter; Interruption community user reporting information by obtaining calculates this time internal compensation performance function ICPF again
1_1Value; Wherein, the calculation expression of internal compensation performance function value after the i time in formula (3) the expression k wheel iteration adjustment adjusted;
ICPF(k,i)=λ×SE
edge(outage_cell)(k,i)+(1-λ)×SE
avrg(outage_cell)(k,i)(3)
2-2-3) will take turns (3 in the iteration adjustment
N-1) individual internal compensation performance function value deducts respectively this internal compensation performance function initial value of taking turns iteration (this initial value is the internal compensation performance function value after the last round of iteration), obtains (3
N-1) individual internal compensation performance function increment Delta ICPF; Wherein, formula (4) represent this take turns adjust in the iteration adjustment the i time after the calculation expression of internal compensation performance function increment:
ΔICPF(k,i)=ICPF(k,i)-ICPF(k,0) (4)
2-2-4) select this to take turns (3 after the adjustment
N-1) the internal compensation increment Delta ICPF (k, m) of the maximum in the individual internal compensation performance function increment judges according to this value whether iteration adjustment stops;
ΔICPF(k,m)=maxΔICPF(k,i) (5)
In the formula (5), m represents that this takes turns once adjustment corresponding to middle maximum internal compensation performance increment of a function;
If maximum internal compensation performance increment of a function is greater than 0, with maximum internal compensation performance increment of a function corresponding once adjust the adjustment parameter T that obtains
1_1With internal compensation performance function ICPF value, upgrade the adjustment parameter T of this internal compensation residential quarter of taking turns iteration adjustment
1_1With the initial value (as formula (6), (7) shown in) of internal compensation performance function ICPF as the next round iteration adjustment, adjust step delta T this moment
1_1Remain unchanged as the initial value (shown in formula (8)) of next round iteration, enter the next round iteration adjustment;
T
1_1(k+1，0)=T
1_1(k,m) (6)
ICPF(k+1,0)=ICPF(k,m) (7)
ΔT
1_1(k+1)=ΔT
1_1(k)) (8)
If maximum internal compensation performance increment of a function is not more than 0, takes turns the iteration adjustment step-length according to this again and judge whether iteration adjustment stops, that is:
If current adjustment step-length greater than adjusting step factor, then deducts with current adjustment step-length and adjusts step factor as the adjustment step-length (shown in formula (9)) of next round iteration adjustment, simultaneously, this takes turns the adjustment parameter T of adjustment
1_1Remain unchanged as the initial value (shown in formula (10), (11)) of next round iteration with internal compensation performance function ICPF, enter the next round iteration adjustment;
ΔT
1_1(k+1)=ΔT
1_1(k)-K
1_1 (9)
T
1-1(k+1,0)=T
1-1(k,0) (10)
ICPF(k+1,0)=ICPF(k,0) (11)
If current adjustment step-length is not more than the adjustment step factor, then iteration adjustment stops, and internal adjustment finishes, and with the adjustment parameter value of current adjustment parameter value as final internal compensation residential quarter, enters the outside adjusting stage;
3) the outside adjustment: according to N internal compensation cell number, order is carried out many rounds iteration adjustment to the adjustment parameter of the external compensation residential quarter of each internal compensation residential quarter respectively by number, the adjustment parameter value adjusted after the finishing final adjustment parameter value as the external compensation residential quarter of this internal compensation residential quarter will be taken turns more, finish the compensation to this internal compensation residential quarter, enter again the outside adjustment of next internal compensation residential quarter; Finally finish the interruption compensation of interrupting the residential quarter;
Wherein the outside adjustment of j internal compensation residential quarter specifically may further comprise the steps:
3-1) record the adjustment parameter T of the individual external compensation of M (j) residential quarter of this internal compensation residential quarter
2_jInitial value T
2_j(0) as the 1st initial value of taking turns iteration adjustment, wherein, T
2_j(0) for length be the vector of M (j), each element value represents the adjustment initial parameter value of each external compensation residential quarter successively; And the SINR reporting information of the interruption residential quarter, internal compensation residential quarter and the external compensation community user that obtain according to statistics, calculate external compensation performance function (Outer Compensation Performance Function:OCPF) initial value OCPF
2_j(0,0);
OCPF
2_j(0,0)=β×SE
avrg(comp_cell)(0,0)+(1-β)×SE
avrg(outage_cell)(0,0)(12)
Wherein, SE
Avrg (comp_cell)User's average spectral efficiency (ase) in the representative compensation residential quarter (comprising internal compensation residential quarter and external compensation residential quarter), SE
Avrg (outage_cell)The average spectral efficiency (ase) of user in the residential quarter is interrupted in representative, and β is the compromise factor (0＜β＜1);
3-2) adjust matrix A with the outside of this internal compensation residential quarter
2_jAdjustment parameter T to the external compensation residential quarter of this internal compensation residential quarter
2_jCarry out many wheels (3
M (j)-1) inferior iteration adjustment obtains the outside adjustment parameter T that adjusts after finishing
2_jValue is finished the compensation to this internal compensation residential quarter as the final adjustment parameter value of the external compensation residential quarter of this internal compensation residential quarter, enters the outside adjustment of next internal compensation residential quarter, finally finishes the interruption compensation of interrupting the residential quarter; Wherein the concrete steps of k wheel iteration adjustment are as follows:
The corresponding element that every delegation of matrix is adjusted in the outside that 3-2-1) will adjust respectively step-length and this internal compensation residential quarter multiplies each other, and takes turns with this and to adjust initial parameter value (this initial value is the adjustment parameter value of last round of iteration) addition, the adjustment parameter T after being adjusted
2_jValue is as once adjusting; Wherein, the i time in j internal compensation residential quarter k wheel of formula (13) the expression iteration adjustment adjusted the external compensation residential quarter and adjusted parameter T
2_jMethod;
T
2_j(k,i)=T
2_j(k,0)+ΔT
2_j(k)×A
2_j(i,:) (13)
In the formula (13), i=1...3
M (j)-1, A
2_j(i :) expression internal adjustment matrix A
2_jI capable;
3-2-2) according to the adjustment parameter T that obtains each time
2_jBe worth, adjust the external compensation cell parameter of this internal compensation residential quarter; Interruption residential quarter, internal compensation residential quarter and external compensation community user reporting information by obtaining calculate the external compensation performance function OCPF of this internal compensation residential quarter of this time
2_jValue; Wherein, the calculation expression of external compensation function after the i time in the k wheel iteration adjustment of j internal compensation residential quarter of formula (14) expression adjusted;
OCPF
2_j(k,i)=β×SE
avrg(comp_cell)(k,i)+(1-β)×SE
avrg(outage_cell)(k,i)(14)
3-2-3) will take turns (3 in the iteration adjustment
M (j)-1) individual external compensation performance function value deducts respectively the external compensation performance function initial value (this initial value is the internal compensation performance function value after the last round of iteration) of this this wheel of internal compensation residential quarter, obtains (3
M (j)-1) individual external compensation performance function increment Delta OCPF; Wherein, formula (15) represents the calculation expression of the i time rear external compensation performance function increment of adjustment in this wheel iteration adjustment of this internal compensation residential quarter:
ΔOCPF
2_j(k,i)=OCPF
2_j(k,i)-OCPF
2_j(k,0) (15)
3-2-4) (3 after selecting this wheel of this internal compensation residential quarter to adjust
M (j)-1) the maximum external compensation performance function increment Delta OCPF (k, m) in the individual maximum external compensation performance function increment judges according to this value whether the outside adjustment of this internal compensation residential quarter stops;
ΔOCPF
2_j(k,m)=maxΔOCPF
2_j(k,i) (16)
In the formula (16), m represents once adjustment corresponding to maximum external compensation performance function increment in this this wheel of internal compensation residential quarter;
If maximum external compensation performance function increment greater than 0, is taken turns the adjustment parameter T that once adjusts correspondence of maximum external compensation performance function increment in the adjustment with this
2_jWith external compensation performance function OCPF
2_jBe worth, upgrade the adjustment parameter T of this external compensation residential quarter of taking turns iteration adjustment
2_jWith external compensation performance function OCPF
2_jAs the initial value (shown in formula (17), (18)) of next round iteration adjustment, adjust step delta T this moment
2_jRemain unchanged (shown in formula (19)), enter the next round iteration adjustment;
T
2_j(k+1,0)=T
2_j(k,m) (17)
OCPF
2_j(k+1,0)=OCPF
2_j(k,m) (18)
ΔT
2_j(k+1)=Δ
2_j(k) (19)
If maximum external compensation performance function increment is not more than 0, takes turns the iteration adjustment step-length according to this again and judge whether the iteration adjustment of this internal compensation residential quarter stops, that is:
If current adjustment step-length is greater than adjusting step factor, then current adjustment step-length deducts and adjusts step factor as the adjustment step-length (shown in formula (20)) of next round iteration adjustment, simultaneously, adjusts parameter T
2_jWith external compensation performance function OCPF
2_jRemain unchanged as the initial value (shown in formula (21), (22)) of next round iteration, enter the next round iteration adjustment;
ΔT
2_j(k+1)=ΔT
2_j(k)-K
2_j (20)
T
2_j(k+1,0)=T
2_j(k,0) (21)
OCPF
2_j(k+1,0)=OCPF
2_j(k,m) (22)
If current adjustment step-length is not more than the adjustment step factor, then the iteration adjustment of this internal compensation residential quarter stops, the outside adjustment of this internal compensation residential quarter finishes, with the final adjustment parameter value of current adjustment parameter value as the external compensation residential quarter of this internal compensation residential quarter, finish the compensation to this internal compensation residential quarter, judge according to current internal compensation cell number whether the interruption compensation of interrupting the residential quarter finishes again:
If current numbering j (is that j＜N), then the outside adjustment of j internal compensation residential quarter finishes, and enters the outside adjusting stage of j+1 internal compensation residential quarter less than internal compensation residential quarter number N; Otherwise (be current numbering j more than or equal to internal compensation residential quarter number N, j＞=N) represents that the outside adjustment of all internal compensation residential quarters stops, and finally finishes the interruption compensation of interrupting the residential quarter.
Claims (4)
1. a cell outage compensation method that is used for self-organizing network is characterized in that, the method comprises: select internal compensation residential quarter and external compensation residential quarter from adjacent cell, determine the adjustment parameter of compensation residential quarter; Adjust successively the internal compensation cell parameter, according to reporting of user information acquisition internal compensation performance function increment, carry out parameter and upgrade; After the internal adjustment iteration stopping, carry out the outside adjusting stage; Adjust successively the external compensation cell parameter, according to reporting of user information acquisition external compensation performance function increment, carry out parameter and upgrade; After adjusting iteration stopping, the outside finishes compensation.
2. method as claimed in claim 1 is characterized in that, the method specifically may further comprise the steps:
1) initialization: from the adjacent cell that interrupts the residential quarter, determine internal compensation residential quarter and external compensation residential quarter, determine to adjust parameter, the line parameter initialization of going forward side by side;
1-1) determine the internal compensation residential quarter: centered by the interruption residential quarter, in the neighbor cell that interrupts the residential quarter, select N internal compensation residential quarter according to position and the loading condition of neighbor cell, N is positive integer; And be numbered from small to large j ID number according to the internal compensation residential quarter, and wherein j represents j internal compensation residential quarter, the j value is j=1, and 2 ... N;
1-2) determine the external compensation residential quarter: respectively by internal compensation cell number j, centered by each internal compensation residential quarter, from the neighbor cell of each internal compensation residential quarter, position and loading condition according to neighbor cell are selected the individual external compensation of M (j) residential quarter, wherein M (j) represents j the external compensation residential quarter number that the internal compensation residential quarter is corresponding, and M (j) is positive integer;
1-3) compensate internally in the Downtilt, antenna azimuth, base station transmitting power, uplink receiving signal power, handoff parameter of residential quarter and select a parameter as adjusting parameter T
1_1Select a parameter as adjusting parameter from the Downtilt of the external compensation residential quarter of each internal compensation residential quarter, antenna azimuth, base station transmitting power, uplink receiving signal power, handoff parameter successively, wherein the adjustment Parametric Representation of the external compensation residential quarter of j internal compensation residential quarter is T
2_j
1-4) generate 1 internal adjustment matrix A
1_1With N the outside matrix A of adjusting
2_j, and exchange the long and step-length adjustment factor of synchronizing and carry out initialization, specifically comprise:
1-4-1) generate 1 internal adjustment matrix A according to internal compensation residential quarter number and external compensation residential quarter number
1_1With N the outside matrix A of adjusting
2_j, wherein internal adjustment matrix and the outside matrix element of adjusting matrix be-1,0,1, respectively expression reduce, constant and increase adjustment parameter, internal adjustment matrix A
1_1With j the outside matrix A of adjusting
2_jSize is respectively (3
N-1) * N and (3
M (j)-1) * M (j);
1-4-2) determine the initial adjustment step delta T of internal compensation residential quarter
1_1(0) and step-length adjust factor K
1_1: wherein, initially adjust step delta T
1_1(0) doubly adjusts parameter T for P
1_1Minimum adjustable unit, P is positive integer; Step-length is adjusted factor K
1_10;
Initial adjustment step-length and the step-length of 1-4-3) determining respectively the external compensation residential quarter of each internal compensation residential quarter are adjusted the factor, and wherein the initial adjustment step-length of the external compensation residential quarter of j internal compensation residential quarter is expressed as Δ T
2_j(0) and step-length to adjust factor representation be K
2_j
Wherein, initially adjust step delta T
2_j(0) doubly adjusts parameter T for P
2_jMinimum adjustable unit, wherein, P is positive integer; Step-length is adjusted factor K
2_j0;
2) internal adjustment: parameter initialization, and use the internal adjustment matrix A
1_1To adjusting parameter T
1_1Carry out repeatedly iteration adjustment, the adjustment parameter T after obtaining internal adjustment and finishing
1_1Behind the final adjustment parameter value of value as the internal compensation residential quarter, enter outside the adjustment, specifically may further comprise the steps:
2-1) the adjustment parameter T of N internal compensation residential quarter of record
1_1Initial value T
1_1(0) as the 1st initial value of taking turns iteration adjustment, wherein, T
1_1(0) for length be the vector of N, each element value represents the adjustment initial parameter value of each internal compensation residential quarter successively; And the Signal to Interference plus Noise Ratio reporting information of the interruption community user that obtains according to statistics, calculate internal compensation performance function initial value ICPF (0,0) as the 1st initial value of taking turns iteration adjustment;
ICPF(0,0)=λ×SE
edge(outage_cell)(0,0)+(1-λ)×SE
avrg(outage_cell)(0,0)(1)
Wherein, SE
Edge (outage_cell)Residential quarter inward flange user's spectrum efficiency, SE are interrupted in expression
Avrg (outage_cell)The average spectral efficiency (ase) of user in the residential quarter is interrupted in expression, and λ is the compromise factor, 0＜λ＜1;
2-2) use the internal adjustment matrix A
1_1Adjustment parameter T to the internal compensation residential quarter
1_1Carry out many wheels (3
N-1) inferior iteration adjustment, the adjustment parameter T after obtaining internal adjustment and finishing
1_1Value enters outside the adjustment as the final adjustment parameter value of internal compensation residential quarter;
3) the outside adjustment: according to N internal compensation cell number, order is carried out many rounds iteration adjustment to the adjustment parameter of the external compensation residential quarter of each internal compensation residential quarter respectively by number, the adjustment parameter value adjusted after the finishing final adjustment parameter value as the external compensation residential quarter of this internal compensation residential quarter will be taken turns more, finish the compensation to this internal compensation residential quarter, enter again the outside adjustment of next internal compensation residential quarter, finally finish the interruption compensation of interrupting the residential quarter;
Wherein the outside adjustment of j internal compensation residential quarter specifically may further comprise the steps:
3-1) record the adjustment parameter T of the individual external compensation of M (j) residential quarter of this internal compensation residential quarter
2_jInitial value T
2_j(0) as the 1st initial value of taking turns iteration adjustment, wherein, T
2_j(0) for length be the vector of M (j), each element value represents the adjustment initial parameter value of each external compensation residential quarter successively; And the SINR reporting information of the interruption residential quarter, internal compensation residential quarter and the external compensation community user that obtain according to statistics, calculate external compensation performance function initial value OCPF
2_j(0,0);
OCPF
2_j(0,0)=β×SE
avrg(comp_cell)(0,0)+(1-β)×SE
avrg(outage_cell)(0,0)(12)
Wherein, SE
Avrg (comp_cell)Represent the user's average spectral efficiency (ase) in internal compensation residential quarter and the external compensation residential quarter, SE
Avrg (outage_cell)The average spectral efficiency (ase) of user in the residential quarter is interrupted in representative, and β is the compromise factor (0＜β＜1);
3-2) adjust matrix A with the outside of this internal compensation residential quarter
2_jAdjustment parameter T to the external compensation residential quarter of this internal compensation residential quarter
2_jCarry out many rounds iteration adjustment, obtain the outside adjustment parameter T that adjusts after finishing
2_jValue is finished the compensation to this internal compensation residential quarter as the final adjustment parameter value of the external compensation residential quarter of this internal compensation residential quarter, enters the outside adjustment of next internal compensation residential quarter, finally finishes the interruption compensation of interrupting the residential quarter.
3. method as claimed in claim 2 is characterized in that described 2-2) use the internal adjustment matrix A
1_1Adjustment parameter T to the internal compensation residential quarter
1_1Carry out many wheels (3
N-1) inferior iteration adjustment, wherein the concrete steps of k wheel iteration adjustment are as follows:
The corresponding element that 2-2-1) will adjust respectively every delegation of step-length and internal adjustment matrix multiplies each other, and takes turns with this and to adjust parameter T
1_1The initial value addition is adjusted rear new adjustment parameter value, as once adjusting; Wherein, the i time in formula (2) the expression k wheel iteration adjustment adjusted the internal compensation residential quarter and adjusted parameter T
1_1The calculation expression of (k, i);
T
1_1(k,i)=T
1_1(k,0)+ΔT
1_1(k)×A
1_1(i,:) (2)
In the formula (2), i=1...3
N-1, A
1_1(i :) expression internal adjustment matrix A
1_1I capable;
2-2-2) according to the adjustment parameter T that obtains each time
1_1Value, adjust the internal compensation cell parameter; Interruption community user reporting information by obtaining calculates this time internal compensation performance function ICPF again
1_1Value; Wherein, the calculation expression of internal compensation performance function value after the i time in formula (3) the expression k wheel iteration adjustment adjusted;
ICPF(k,i)=λ×SE
edge(outage_cell)(k,i)+(1-λ)×SE
avrg(outage_cell)(k,i)(3)
2-2-3) will take turns (3 in the iteration adjustment
N-1) individual internal compensation performance function value deducts respectively this internal compensation performance function initial value of taking turns iteration, obtains (3
N-1) individual internal compensation performance function increment Delta ICPF; Wherein, formula (4) represent this take turns adjust in the iteration adjustment the i time after the calculation expression of internal compensation performance function increment:
ΔICPF(k,i)=ICPF(k,i)-ICPF(k,0) (4)
2-2-4) select this to take turns (3 after the adjustment
N-1) the internal compensation increment Delta ICPF (k, m) of the maximum in the individual internal compensation performance function increment judges according to this value whether iteration adjustment stops;
ΔICPF(k,m)=maxΔICPF(k,i) (5)
In the formula (5), m represents that this takes turns once adjustment corresponding to middle maximum internal compensation performance increment of a function;
If maximum internal compensation performance increment of a function is greater than 0, with maximum internal compensation performance increment of a function corresponding once adjust the adjustment parameter T that obtains
1_1With internal compensation performance function ICPF value, upgrade the adjustment parameter T of this internal compensation residential quarter of taking turns iteration adjustment
1_1With the initial value of internal compensation performance function ICPF as the next round iteration adjustment, adjust step delta T this moment
1_1Remain unchanged as the initial value of next round iteration, enter the next round iteration adjustment;
T
1_1(k+1,0)=T
1_1(k,m) (6)
ICPF(k+1,0)=ICPF(k,m) (7)
ΔT
1_1(k+1)=ΔT
1_1(k)) (8)
If maximum internal compensation performance increment of a function is not more than 0, takes turns the iteration adjustment step-length according to this again and judge whether iteration adjustment stops, that is:
If current adjustment step-length greater than adjusting step factor, then deducts with current adjustment step-length and adjusts step factor as the adjustment step-length of next round iteration adjustment, simultaneously, this takes turns the adjustment parameter T of adjustment
1_1ICPF remains unchanged as the initial value of next round iteration with the internal compensation performance function, enters the next round iteration adjustment;
ΔT
1_1(k+1)=ΔT
1_1(k)-K
1_1 (9)
T
1_1(k+1,0)=T
1_1(k,0) (10)
ICPF(k+1,0)=ICPF(k,0) (11)
If current adjustment step-length is not more than the adjustment step factor, then iteration adjustment stops, and internal adjustment finishes, and with the adjustment parameter value of current adjustment parameter value as final internal compensation residential quarter, enters the outside adjusting stage.
4. method as claimed in claim 2 is characterized in that, described step 3-2) in the concrete steps of k wheel iteration adjustment as follows:
The corresponding element that every delegation of matrix is adjusted in the outside that 3-2-1) will adjust respectively step-length and this internal compensation residential quarter multiplies each other, and takes turns with this and to adjust initial parameter value addition, the adjustment parameter T after being adjusted
2_jValue is as once adjusting; Wherein, the i time in j internal compensation residential quarter k wheel of formula (13) the expression iteration adjustment adjusted the external compensation residential quarter and adjusted parameter T
2_jMethod;
T
2_j(k,i)=T
2_j(k,0)+ΔT
2_j(k)×A
2_j(i,:) (13)
In the formula (13), i=1...3
M (j)-1, A
2_j(i :) expression internal adjustment matrix A
2_jI capable;
3-2-2) according to the adjustment parameter T that obtains each time
2_jBe worth, adjust the external compensation cell parameter of this internal compensation residential quarter; Interruption residential quarter, internal compensation residential quarter and external compensation community user reporting information by obtaining calculate the external compensation performance function OCPF of this internal compensation residential quarter of this time
2_jValue; Wherein, the calculation expression of external compensation function after the i time in the k wheel iteration adjustment of j internal compensation residential quarter of formula (14) expression adjusted;
OCPF
2_j(k,i)=β×SE
avrg(comp_cell)(k,i)+(1-β)×SE
avrg(outage_cell)(k,i)(14)
3-2-3) will take turns (3 in the iteration adjustment
M (j)-1) individual external compensation performance function value deducts respectively the external compensation performance function initial value (this initial value is the internal compensation performance function value after the last round of iteration) of this this wheel of internal compensation residential quarter, obtains (3
M (j)-1) individual external compensation performance function increment Delta OCPF; Wherein, formula (15) represents the calculation expression of the i time rear external compensation performance function increment of adjustment in this wheel iteration adjustment of this internal compensation residential quarter:
ΔOCPF
2_j(k,i)=OCPF
2_j(k,i)-OCPF
2_j(k,0) (15)
3-2-4) (3 after selecting this wheel of this internal compensation residential quarter to adjust
M (j)-1) the maximum external compensation performance function increment Delta OCPF (k, m) in the individual maximum external compensation performance function increment judges according to this value whether the outside adjustment of this internal compensation residential quarter stops;
ΔOCPF
2_j(k,m)=maxΔOCPF
2_j(k,i) (16)
In the formula (16), m represents once adjustment corresponding to maximum external compensation performance function increment in this this wheel of internal compensation residential quarter;
If maximum external compensation performance function increment greater than 0, is taken turns the adjustment parameter T that once adjusts correspondence of maximum external compensation performance function increment in the adjustment with this
2_jWith external compensation performance function OCPF
2_jBe worth, upgrade the adjustment parameter T of this external compensation residential quarter of taking turns iteration adjustment
2_jWith external compensation performance function OCPF
2_jAs the initial value of next round iteration adjustment, adjust step delta T this moment
2_jRemain unchanged, enter the next round iteration adjustment;
T
2_j(k+1,0)=T
2_j(k,m) (17)
OCPF
2_j(k+1,0)=OCPF
2_j(k,m) (18)
ΔT
2_j(k+1)=ΔT
2_j(k) (19)
If maximum external compensation performance function increment is not more than 0, takes turns the iteration adjustment step-length according to this again and judge whether the iteration adjustment of this internal compensation residential quarter stops, that is:
If current adjustment step-length is greater than adjusting step factor, then current adjustment step-length deducts and adjusts step factor as the adjustment step-length of next round iteration adjustment, simultaneously, adjusts parameter T
2_jWith external compensation performance function OCPF
2_jRemain unchanged as the initial value of next round iteration, enter the next round iteration adjustment;
ΔT
2_j(k+1)=ΔT
2_j(k)-K
2_j (20)
T
2_j(k+1,0)=T
2_j(k,0) (21)
OCPF
2_j(k+1,0)=OCPF
2_j(k,m) (22)
If current adjustment step-length is not more than the adjustment step factor, then the iteration adjustment of this internal compensation residential quarter stops, the outside adjustment of this internal compensation residential quarter finishes, with the final adjustment parameter value of current adjustment parameter value as the external compensation residential quarter of this internal compensation residential quarter, finish the compensation to this internal compensation residential quarter, judge according to current internal compensation cell number whether the interruption compensation of interrupting the residential quarter finishes again:
If current numbering j is less than internal compensation residential quarter number N, then the outside adjustment of j internal compensation residential quarter finishes, and enters the outside adjusting stage of j+1 internal compensation residential quarter; Otherwise, represent that the outside adjustment of all internal compensation residential quarters stops, finally finish the interruption compensation of interrupting the residential quarter.
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| CN103517309A (en) * | 2013-10-11 | 2014-01-15 | 清华大学 | Cell interruption compensation method based on asymptotic greedy behavior exploration |
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| WO2015149310A1 (en) * | 2014-04-02 | 2015-10-08 | 华为技术有限公司 | Method and apparatus for cell interruption compensation |
| CN105101265A (en) * | 2015-07-03 | 2015-11-25 | 北京邮电大学 | Cooperative compensation service method for solving cell service interruption |
| CN105813097A (en) * | 2016-05-09 | 2016-07-27 | 东南大学 | Interruption compensation method for cell in mobile communication network |
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| CN103269494A (en) * | 2013-04-24 | 2013-08-28 | 北京邮电大学 | Method and system for interruption compensating in wireless access network cell |
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