Embodiment
In the embodiment of the invention, the value of negotiable mobility parameter between the eNB, adjacent then a plurality of eNB are simultaneously with the value of mobility parameter adjustment to negotiation, suitably dwindle coverage with the eNB that realizes heavy load, lighten the load, the eNB that is adjacent suitably increases coverage, strengthens the covering to the scope that eNB dwindled of heavy load, improved the communication quality of edge UE, reduced edge UE the possibility that table tennis switches takes place.
In the present embodiment, an eNB may cover one or more sub-districts, if corresponding eNB in a plurality of sub-districts, then the mobility parameter between these a plurality of sub-districts is determined to get final product by this eNB, if the corresponding a plurality of eNB in a plurality of sub-districts, then the mobility parameter between these a plurality of sub-districts need be by consulting between a plurality of eNB, and present embodiment relates generally to the process of consulting between a plurality of eNB.
Referring to Fig. 1, the main method flow process of balanced load is as follows in the present embodiment:
Step 101: an eNB receives the adjustment information of the first adjacent area mobility parameter that the 2nd eNB sends.Adjustment information can be the information of expression adjusting range, or is adjusting range itself.
Step 102: an eNB determines the relevant information of the first adjacent area mobility parameter according to the adjustment information of receiving, and sends to the 2nd eNB.The relevant information of mobility parameter comprises the value or the adjustment amount of mobility parameter.
Step 103: the 2nd eNB determines the relevant information of the second adjacent area mobility parameter according to the relevant information of the first adjacent area mobility parameter.
Step 104: an eNB adjusts according to the relevant information of the first adjacent area mobility parameter, and the 2nd eNB adjusts according to the relevant information of the second adjacent area mobility parameter.
In order to alleviate the load of sub-district 0, the coverage that need dwindle sub-district 0 makes user's switching at 0 edge, sub-district or arrives adjacent sub-district again.To switch to example, when the 1:Mn+Ofn+Ocn-Hys that satisfies condition>Ms+Ofs+Ocs+Off, UE 0 switches to neighbor cell from the sub-district, and wherein Mn is the measured value of adjacent area, and ofn is the deviant of the frequency that adopts of adjacent sub-district, Ocn is the sub-district individual character skew of adjacent area, Hys is sluggish parameter, and Ms is the measured value of this sub-district, and Ofs is the deviant of the frequency of this sub-district employing, Ocs is the sub-district individual character skew of this sub-district, and off is the offset parameter of A3 incident.Distortion can get to condition 1: Mn>Ms+ (Ofs+Ocs+Off+Hys)-(Ofn+Ocn), because Mn and Ms are the measured value of objective reality, so only need to (Ofs+Ocs+Off+Hys)-(Ofn+Ocn) adjust.In order to explain the convenience with message transmission, make Ai=Ofs+Ocs+Ofi+Hys, Bi=Ofn+Ocn, Ai represent the mobility parameter sum of this sub-district, Bi represents the mobility parameter sum of an adjacent sub-district of this sub-district.Present embodiment is to consider the influence of many-sided factor to coverage, just makes Ai=Ofs+Ocs+Ofi+Hys, Bi=Ofn+Ocn.If the process and the transinformation of simplified equalization load, then condition 1 can be reduced to Mn+Ocn>Ms+Ocs, promptly Ai comprises Ocs at least, Bi comprises Ocn at least.For reselecting parameters, then Ai comprises Qhyst (the sub-district deviant of this sub-district) at least, and Bi comprises Qoffset (two sub-district between sub-district deviant) at least.Each sub-district all disposes Ai and Bi, realizes balanced load by the value of adjusting Ai and Bi.
Can adopt existing message alternately between the one eNB and the 2nd eNB, also can adopt newly-designed message, introduce in detail below by two embodiment.
Referring to Fig. 2, the method flow of balanced load is as follows when adopting existing signaling to hold consultation in the present embodiment:
Covering a sub-district with an eNB is example, and referring to shown in Figure 3, heavy load or overload appear in sub-district 0, and sub-district 1-6 that need be adjacent with self carries out load balancing to be handled.ENB0 coverage cell 0, eNB1 coverage cell 1, by that analogy.
Step 201:eNB0 finds that the load level value of sub-district 0 is higher than load thresholding Th0, shows that heavy load or overload appear in sub-district 0, need carry out load balancing with neighbor cell.
Step 202:eNB0 sends resource status request (Resource StatusRequest) message to eNB1-6 respectively, consults with request.Present embodiment utilizes the vacant field in the resource status request message to carry A
0With
The value of (i=1,2...6).
Superscript represent the sign of this sub-district, subscript is represented the sign of adjacent sub-district.If in eNB1-6, disposed A
0With
Then can not carry A
0With
Value.Perhaps, eNB0 is periodically with A
0With
Send to eNB1-6, then also can in the resource status request message, not carry; The A that eNB1-6 received according to the last time
0With
Carry out follow-up judgement and calculating.
Step 203:eNB1-6 has judged whether load-bearing capacity, if having, then replys resource status response (Resource Status Response) message, if do not have, does not then reply message.The deterministic process of this step adopts prior art.ENB1-6 all has the ability to load in the present embodiment, then continues step 204.If eNB1-6 does not all have capacity load, then eNB0 can initiate the request of load balancing after a period of time again, perhaps asks Operation Administration and Maintenance (OAM) equipment to force load balancing.
Step 204:eNB1-6 judges whether to agree to consult, if agree, then continues step 205, otherwise continues step 206.For example, eNB1-3 agrees to consult, and eNB4-6 disagrees with negotiation.
Step 205:eNB1-3 calculates the adjusting range about the adjacent area mobility parameter of the
sub-district 0 of self.That is, eNB1-3 calculates respectively
Adjusting range.
Step 206:eNB4-6 sends expression to eNB0 and disagrees with that the resource status of negotiation upgrades (ResourceStatus Update) message, promptly comprises the flag bit that negotiation is disagreed with in expression in the resource status updating message, is that negotiation is disagreed with in 0 expression as flag bit.
If eNB1-3 also sends the resource status updating message that negotiation is disagreed with in expression to eNB0, then finish this flow process, eNB0 can initiate the request of load balancing after a period of time again, perhaps asks OAM to force load balancing.
Step 207:eNB1-3 sends to eNB0 and agrees the resource status updating message of consulting, and this resource status updating message also carries
Adjusting range.As the flag bit in the resource status updating message is 1, agrees to consult.
Present embodiment utilizes the vacant field in the resource status updating message to carry flag bit and adjusting range.
Step 208:eNB0 selects one or more eNB to carry out equilibrium from the eNB1-3 that agrees to consult.For example, eNB0 selects eNB1-2 to carry out equilibrium.
Step 209:eNB0 determine according to the adjusting range received corresponding selection eNB adjacent area mobility parameter (promptly
) value or adjustment amount.
Step 210:eNB0 sends to corresponding eNB by eNB config update (eNB Configuration Update) message with the value or the adjustment amount of adjacent area mobility parameter.For example, eNB0 will
Value or adjustment amount send to eNB1-2.
Present embodiment utilizes the vacant field in the eNB configuration update message to carry the value or the adjustment amount of parameter update time and mobility parameter.
Step 211:eNB1-2 determines self adjacent area mobility parameter with respect to eNB0 according to the value or the adjustment amount of the adjacent area mobility parameter of receiving, promptly eNB1-2 determines respectively
With
ENB1-2 also returns the correct response of eNB configuration (eNB Configuration Acknowledge) message, the value or the adjustment amount of the mobility parameter that expression can be accepted to receive.
Step 212:eNB0 and eNB1-2 adjust according to the value or the adjustment amount of the adjacent area mobility parameter of self, to realize load balancing.
After eNB0-2 adjusts adjacent area mobility parameter, in system information, carry the value of adjusted adjacent area mobility parameter with broadcast mode, and pass through beep-page message untill further notice UE receives broadcasting when the next system information update cycle arrives system information, so that UE upgrades.
The adjacent area mobility parameter of eNB0-2 changes, and makes the UE be positioned at cell edge switch or gravity treatment according to the adjacent area mobility parameter after upgrading, from the sub-district 0 switch or gravity treatment to sub-district 1-2, thereby alleviated the load of sub-district 0, realized load balancing.
In the present embodiment, the criterion of step 204 is with respect to step 203 strictness.With the handoff procedure is example, and the condition 1 that switches to sub-district j from cell i is M
j>M
i+ (A
i-B
j); 1≤i, j≤N and i ≠ j, the condition 2 that switches to cell i from sub-district j is M
i>M
j+ (A
j-B
i); 1≤i, j≤N and i ≠ j.Can get according to condition 1 and 2: A
i+ A
j<B
i+ B
jIn order to prevent that table tennis from switching, and then needs the 3:A that satisfies condition
i+ A
j>B
i+ B
jIn step 204, eNB1-6 judges whether to meet the following conditions:
Wherein, j=1,2...6, h1 and h2 are default mobility parameter threshold value, can according to mobile robustness optimization (Mobility robustness optimization, MRO) or the engineering experience setting.
If satisfy, then agree to consult, otherwise disagree with negotiation, show that this locality does not have ability and neighbor cell to carry out load balancing.
For example, eNB1 agrees to consult, then basis in
step 205
But excursion, as-5~5, can be directly with
But the excursion conduct
But excursion, perhaps foundation
But excursion and
Value obtain
Span, as 10~20.
But span and excursion all can in the
sub-district 0 about the adjusting range of the adjacent area mobility parameter of
sub-district 1.
In
step 207, be example with eNB1, the adjusting range that eNB1 carries in the resource status updating message can be
But excursion, as-5~5,, increase the coverage of sub-district 1-6 because present embodiment is to wish the coverage dwindle sub-district 0, so
But excursion can be 0~5; Or
Span, as 10~20 or 15~20.If B
1Comprise Ofn
1And Ocn
1, then eNB1 can carry in the resource status updating message
Adjusting range, this moment need be in
step 209 the eNB0 foundation
Adjusting range determine Ofn
1And Ocn
1Adjusting range.Perhaps, eNB1 is obtaining in
step 205
Adjusting range after, further obtain Ofn
1And Ocn
1Adjusting range, in the resource status updating message of
step 207, carry Ofn then
1And Ocn
1Adjusting range.Obtain Ofn
1And Ocn
1The mode of adjusting range will as: eNB1
But excursion on average arrive Ofn
1And Ocn
1On, i.e. Ofn
1And Ocn
1But excursion be-2.5~2.5; Perhaps, be Ofn in advance
1And Ocn
1Scope weight w and 1-w are set, 0<w<1, then Ofn
1But excursion be-5w~5w Ocn
1But excursion-5 (1-w)~5 (1-w).
In
step 208, it is multiple that eNB0 selects the mode of adjacent eNB to have, as select any selection, perhaps selects the lightest one or more eNB of load, and perhaps selection is received
One or more eNB etc. of adjusting range maximum.
In
step 209, if eNB0 only receives the adjacent area mobility parameter that eNB1 returns
Adjusting range, then in adjusting range, from the value (as 15) of the first current adjacent area mobility parameter to determining the value that value is an adjacent area mobility parameter the boundary value (as 20) of adjusting direction at random; Perhaps, definite boundary value (as 20) of adjusting direction is the value of adjacent area mobility parameter in adjusting range.For example, sub-district 0 heavy load, wishing will
Transfer greatly, then select the maximum (as 20) in the adjusting range to be the value of adjacent area mobility parameter.
If eNB0 receives the adjacent area mobility parameter that eNB1-2 returns
With
Adjusting range, then eNB0 can from
With
Overlapping scope in determine a value at random, perhaps from
With
Overlapping scope in determine to adjust direction boundary value be the value of adjacent area mobility parameter.Perhaps:
ENB0 determines the mobility B parameter of eNB1-2 according to the load condition of sub-district 0
1-2As: but the corresponding relation of total excursion of default load level value and mobility parameter, and this corresponding relation is as shown in table 1:
Table 1
Load level value f |
But total excursion |
?90≤f |
4 |
?80≤f<90 |
3 |
?70≤f<80 |
2 |
?...... |
...... |
But eNB0 is according to total excursion of adjacent area mobility parameter corresponding in the current load level value question blank 1 in sub-district 0, but determine value according to total excursion of mobility parameter again, but promptly satisfy total excursion of adjacent area mobility parameter about the adjusting range sum of the adjacent area mobility parameter of eNB1-2 about the adjacent area mobility parameter of eNB1-2.Specific implementation has multiple, as: but will total excursion on average to each adjacent eNB, but for example total excursion is 4, then about the adjacent area mobility parameter of eNB1-2
With
Value add 2 respectively.Perhaps, but according to total excursion, satisfy the adjusting range upper limit higher value of adjacent area mobility parameter earlier, but the remainder of the total excursion of foundation remains adjacent area mobility parameter adjustment again, but for example total excursion is 4, about the adjacent area mobility parameter of eNB1
Adjusting range on be limited to 3, about the adjacent area mobility parameter of eNB2
Adjusting range on be limited to 2, then satisfy the adjusting range upper limit higher value of mobility parameter earlier, will
Add 3, but again according to the adjacent area mobility parameter of remaining 1 (the being 4-3) adjustment of total excursion about eNB2, will
Add 1.If but total remaining amount of excursion is greater than the adjusting range upper limit about the adjacent area mobility parameter of eNB2, but then according to total remaining amount of excursion and
The adjusting range upper limit in less value adjustment
In
step 210, eNB0 will
Adjustment amount (as 3) send to eNB1, and will
Adjustment amount (as 1) send to eNB2.Perhaps, eNB0 will
Two values before and after adjusting send to eNB1, are calculated by eNB1
Adjustment amount; And eNB0 will
Two values before and after adjusting send to eNB2, are calculated by eNB2
Adjustment amount.
In
step 211, eNB1 receives
Adjustment amount be 3, then will
Subtract 3,
With
The degree that changes is identical, and the direction of variation is opposite.In like manner, eNB2 receives
Adjustment amount be 1, then will
Subtract 1.If
With
Include a plurality of mobility parameters, then determine the value or the adjustment amount of adjusted each mobility parameter referring to the mode that for each parameter the scope weight is set in the
step 207.
Referring to Fig. 4 A, the method flow of balanced load is as follows when adopting newly-designed signaling to hold consultation in the present embodiment:
Covering a sub-district with an eNB is example, and referring to shown in Figure 3, heavy load or overload appear in sub-district 0, and sub-district 1-6 that need be adjacent with self carries out load balancing to be handled.ENB0 coverage cell 0, eNB1 coverage cell 1, by that analogy.
Step 401:eNB0 finds that the load level value of sub-district 0 is higher than load thresholding Th0, shows that heavy load or overload appear in sub-district 0, need carry out load balancing with neighbor cell.
Step 402:eNB0 sends parameter configuration (Parameter Configuration) message to eNB1-6 respectively, consults with request.With the parameter configuration message that sends to eNB1 is example, and this message comprises the address of purpose eNB1, the sign of eNB0, can also comprise A
0And B
1Perhaps, eNB0 sends the resource status request message and consults with request, simultaneously or send parameter configuration message continuously, and to carry A
0And B
1
Step 403:eNB1-6 judges whether to agree to consult, if agree, then continues step 404, otherwise continues step 405.The detailed process of judging is referring to step 204.For example, eNB4-6 judges back refusal negotiation, and eNB1-3 judgement back is agreed to consult.
Step 404:eNB1-3 calculates the adjusting range about the adjacent area mobility parameter of the
sub-district 0 of self.That is, eNB1-3 calculates respectively
Adjusting range.
Step 405:eNB4-6 sends expression to eNB0 and disagrees with negotiation parameter reconstruction (ParameterRecommendation) message.Parameter is rebuild message and is comprised the sign of source eNB, the address of purpose eNB, and whether expression agrees the flag bit consulted and the adjusting range of mobility parameter, if disagree with negotiation, then the adjusting range of mobility parameter can be sky.
Step 406:eNB1-3 sends to eNB0 and agrees negotiation parameter reconstruction message, and this parameter reconstruction message also carries adjusting range.
Step 407:eNB0 selects one or more eNB to carry out equilibrium from the eNB1-3 that agrees to consult.For example, eNB0 selects eNB1-2 to carry out equilibrium.
Step 408:eNB0 determine according to the adjusting range received corresponding selection eNB adjacent area mobility parameter (promptly
) value or adjustment amount.
Step 409:eNB0 sends to corresponding eNB by parameter update (Parameter Update) message with the value or the adjustment amount of adjacent area mobility parameter.
Step 410:eNB1-2 determines self adjacent area mobility parameter with respect to eNB0 according to the value or the adjustment amount of the adjacent area mobility parameter of receiving, promptly eNB1-2 determines respectively
With
Also return parameters upgrades correct response (Parameter Update Ack) message, the value or the adjustment amount of the mobility parameter that expression can be accepted to receive.
Step 411:eNB0 and eNB1-2 adjust according to the value or the adjustment amount of the adjacent area mobility parameter of self, to realize load balancing.
Fig. 2 and flow process shown in Figure 4, eNB0 is that request is held consultation with eNB1-6 after finding sub-district 0 heavy load, and obtains the adjusting range of the mobility parameter of neighbor cell.Also another kind of implementation can be arranged, periodically send the adjusting range of the mobility parameter of self between the adjacent eNB, this cycle can set in advance, as 30s.ENB did earlier and whether agrees the judgement consulted before the adjusting range of the mobility parameter that sends self, and sent the adjusting range of the mobility parameter of self when agreeing to consult.ENB0 is after finding sub-district 0 heavy load, and the adjusting range of the mobility parameter that the direct adjacent eNB of receiving according to nearest one-period sends is determined the value or the adjustment amount of the mobility parameter of neighbor cell, and sent it to corresponding adjacent eNB.
Among the above embodiment eNB0 by parameter configuration message or resource status request message with parameter A
0With
The value of (i=1,2...6) sends to eNB1-6, and perhaps eNB0 is periodically with A
0With
The value of (i=1,2...6) sends to eNB1-6.Another kind of implementation can also be arranged, and eNB0 is sending A
0With
Value the time, also will
Term of reference send to eNB1-6.
Term of reference can be OAM configuration, also can be with reference in the mobility optimization being
The scope that is provided with can also be determined by table 1 according to the load condition of
sub-district 0
Maximum, thereby obtain
Scope, perhaps get the common factor conduct of scope with the scope of mobility optimization setting of OAM configuration
Term of reference etc.ENB1-6 is according to A
0With
Eligible Deng judging whether
Further judgement calculates under situation about meeting
Scope and acquisition
Term of reference whether common factor is arranged, if having, then agree to consult, other situation is all refused to consult.Introduce implementation procedure in detail below by an embodiment.
Referring to Fig. 4 B, the method flow of balanced load was as follows when eNB0 sent term of reference in the present embodiment:
Step 421:eNB0 sends to eNB1-6 by parameter configuration message
Term of reference, A
0With
Value.Perhaps eNB0 sends to eNB1-6 by parameter configuration message
Term of reference, send A by the resource status request message
0With
Value; Perhaps eNB0 sends to eNB1-6 by the resource status request message
Term of reference, A
0With
Value.ENB0 is execution in
step 421 periodically, perhaps execution in
step 421 after finding sub-district 0 heavy load.
Step 422:eNB1-6 judges whether to agree to consult, if agree, then continues step 424, otherwise continues step 423.
Step 423:eNB3-6 sends resource status updating message or the parameter reconstruction message that negotiation is disagreed with in expression to eNB0.Because the eNB3-6 refusal is consulted, so finish about the flow process of eNB3-6.
Step 424:eNB1-2 sends to eNB0 and agrees the message of consulting, and this message also carries
Adjusting range.
Step 425:eNB0 selects one or more eNB to carry out equilibrium from the eNB1-2 that agrees to consult.For example, eNB0 selects eNB1-2 to carry out equilibrium.
Step 426:eNB0 determines that according to the adjusting range of receiving the adjacent area of the eNB of corresponding selection covers the value or the adjustment amount of parameter.ENB0, as the mode of employing table 1 and makes the suitable parameters value in conjunction with the scope that eNB1-2 provides and selects according to the load balancing algorithm.
Step 427:eNB0 sends to corresponding eNB1-2 with the value or the adjustment amount of adjacent area mobility parameter.The value of adjacent area mobility parameter or adjustment amount can carry by eNB configuration update message or parameter update message.
Step 428:eNB1-2 determines self adjacent area mobility parameter with respect to eNB0 according to the value or the adjustment amount of the adjacent area mobility parameter of receiving.
Step 429:eNB0 and eNB1-2 adjust according to the value or the adjustment amount of the adjacent area mobility parameter of self, to realize load balancing.
Wherein, whether agree in the
step 422 that the judgement of consulting comprises: judge whether this sub-district is the high priority sub-district, and the priority of sub-district can be disposed by OAM; Judge whether eligible
Judge what this locality calculated
Scope and acquisition
Term of reference whether common factor is arranged; If above-mentioned condition all satisfies, then agree to consult, otherwise refusal is consulted.ENB3-4 is because this sub-district is the sub-district of low priority and refuse to consult in the present embodiment; ENB5 is because do not satisfy condition
And refusal is consulted; ENB6 is because can not get
Scope occur simultaneously and refusal is consulted.Wherein, eNB6 is owing to satisfy condition
So can further bear load, consider that from the load balancing angle eNB6 can agree to consult, and considers that from the mobility angle eNB6 refuses to consult.
The initial value of the mobility parameter of each sub-district all is to be provided with according to long-term engineering experience, is more satisfactory value.Adjusting the value of mobility parameter in the present embodiment, is in order to solve the problem that heavy load or overload appear in certain sub-district, and this problem may be interim.So wish after cell load alleviates, the mobility parameter to be returned to initial value.And the heavy load sub-district has dwindled coverage through the adjustment of mobility parameter, thereby has alleviated the load of this sub-district, has realized load balancing with neighbor cell simultaneously.When the load of heavy load sub-district reduced to a lower value, bigger scope was had the ability to cover in this sub-district, and also should consult with neighbor cell this moment, realizes load balancing.
Referring to Fig. 5, the method flow about the balanced load of light load sub-district in the present embodiment is as follows:
With existing signaling is that example describes.
Step 501:eNB0 finds that the load level value of sub-district 0 is lower than load thresholding Th1, shows that sub-district 0 is in the light load state, need carry out load balancing with neighbor cell.Wherein, Th1≤Th0.
Step 502:eNB0 determines the adjacent eNB of holding consultation.ENB0 can all hold consultation with eNB1-6, also can hold consultation with the eNB1-2 that consulted before, perhaps holds consultation etc. according to the relatively poor adjacent eNB of measurement report and measurement result.For example, eNB0 and eNB1-2 hold consultation.
Step 503:eNB0 sends to eNB1-2 by the value about the adjacent area mobility parameter of eNB1-2 of eNB configuration update message before will adjusting.Perhaps, eNB0 will send to eNB1-2 about the opposite number of the adjustment amount of the adjacent area mobility parameter of eNB1-2.During 0 heavy load, the adjustment amount that eNB0 sends may be 2 in the sub-district; 0 light hours in the sub-district, the adjustment amount that eNB0 sends may be-2.
Step 504:eNB1-2 returns eNB and disposes correct response message, the value or the adjustment amount of the mobility parameter that expression can be accepted to receive.
Step 505:eNB0 and eNB1-2 adjust according to the value or the adjustment amount of the adjacent area mobility parameter of self correspondence, to realize load balancing.
Be to make neighbor cell dwindle coverage by the value of adjusting the mobility parameter in the present embodiment, it all is acceptable reducing the scope usually.But in order to prevent that other factors from also having adjusted the value of mobility parameter, may make neighbor cell narrow down to unacceptable scope, eNB0 can send the resource status request message to the adjacent eNB of determining before sending the eNB configuration update message.The eNB that receives this message carries out the judgement in step 203 and the step 204, after agreeing to consult, send to eNB0 and to agree the resource status updating message of consulting, and this resource status updating message also carries adjusting range.ENB0 determines the value or the adjustment amount of the adjacent area mobility parameter of self correspondence according to the adjusting range received.A kind of implementation among Fig. 2 is to determine the value or the adjustment amount of mobility parameter according to the adjusting range upper limit of mobility parameter, and be the coverage of wishing to enlarge sub-district 0 at this moment, dwindle the coverage of neighbor cell, so need to determine the value or the adjustment amount of mobility parameter according to the adjusting range lower limit of mobility parameter.
In the present embodiment, the eNB1-6 that eNB0 is adjacent can constitute a communication system, and referring to shown in Figure 6, this communication system comprises: an eNB601 and the 2nd eNB602.
The one eNB601 is used to receive the adjusting range of the first adjacent area mobility parameter that the 2nd eNB602 sends; Determine the value or the adjustment amount of the first adjacent area mobility parameter according to the adjusting range of receiving, and send to the 2nd eNB602; Value or adjustment amount according to the first adjacent area mobility parameter are adjusted.
The 2nd eNB602 is used for the adjusting range of the first adjacent area mobility parameter is sent to an eNB601, and according to the value or the adjustment amount of the first adjacent area mobility parameter, determines the value or the adjustment amount of the second adjacent area mobility parameter; And adjust according to the value or the adjustment amount of the second adjacent area mobility parameter.The 2nd eNB602 can be any among the eNB1-6.
The one eNB601 can be identical eNB with the 2nd eNB602, the just different effect of performance under different scenes.
Referring to Fig. 7, the eNB in the present embodiment comprises: interface module 701, parameter module 702 and adjusting module 703.
Interface module 701 is used for other eNB mutual, generates and send various message, receives and resolve various message, as receives the adjustment information of the first adjacent area mobility parameter that the 2nd eNB sends.Adjustment information comprises information or the adjusting range itself of representing adjusting range.Negotiation that interface module 701 also is used for asking and the 2nd eNB loads, and know that the 2nd eNB agrees to consult; Perhaps periodically receive the adjusting range of the first adjacent area mobility parameter that the 2nd eNB sends.
Parameter module 702 is used for determining according to the adjustment information of receiving the relevant information of the first adjacent area mobility parameter, promptly determine the value or the adjustment amount of the first adjacent area mobility parameter, and indicate interface module 701 that the value or the adjustment amount of the first adjacent area mobility parameter are sent to the 2nd eNB according to the adjusting range of receiving.Parameter module 702 is used in adjusting range, from the value of the first current adjacent area mobility parameter to determining the relevant information that value is the first adjacent area mobility parameter the boundary value of adjusting direction at random; Perhaps, definite boundary value of adjusting direction is the relevant information of the first adjacent area mobility parameter in adjusting range.The function of parameter module 702 is referring to the description of step 209.
Adjusting module 703 is used for adjusting according to the relevant information of the first adjacent area mobility parameter, promptly adjusts according to the value or the adjustment amount of the first adjacent area mobility parameter.
ENB also comprises load module 707, referring to shown in Figure 8, load module 707 is used to find that the load level value of the sub-district that self covers is higher than the first default load thresholding, the load level value of perhaps finding the sub-district that self covers is lower than the second default load thresholding, and indication interface module request and the 2nd eNB negotiation of loading; Wherein the first load thresholding is not less than the second load thresholding.Interface module 701 also is used for being higher than the first default load thresholding in the load level value of finding the sub-district that self covers, and after request and the 2nd eNB load and consult, the load level value of finding the sub-district that self covers is lower than the second default load door in limited time, sends to the 2nd eNB with the value of the first adjacent area mobility parameter before determining or with the opposite number of the adjustment amount of the first adjacent area mobility parameter.
ENB also comprises: consult determination module 704, agree when being used to determine to meet the following conditions to consult:
A
0+A
1-B
1>B
0
h2>B
0>h1
Wherein, A
0Be the value of the first local area mobility parameter of described eNB correspondence, A
1Be the value of the second local area mobility parameter of the 2nd eNB correspondence, B
1Be the value of the first adjacent area mobility parameter of described eNB correspondence, B
0Be the value of the second adjacent area mobility parameter of the 2nd eNB correspondence, h2 and h1 are default mobility parameter threshold value.
ENB also comprises: range module 705 is used for according to B
0Scope obtain B
1Adjusting range.
Interface module 701 also is used to obtain A
0And B
1Obtain A by accepting configuration
0And B
1Perhaps, by receiving resource status request message or the parameter configuration message acquisition A that the 2nd eNB sends
0And B
1Perhaps, periodically receive the A that the 2nd eNB sends
0And B
1
ENB also comprises: select module 706 to be used for selecting one or more the 2nd eNB from a plurality of the 2nd eNB.The adjusting range that parameter module 702 sends according to the 2nd eNB that receives selection is determined the value or the adjustment amount of the first adjacent area mobility parameter corresponding with the 2nd eNB that selects.
Interface module 701 also is used for the term of reference of the first adjacent area mobility parameter is sent to the 2nd eNB.
Range module 705 also is used to judge whether to access the term of reference of the first adjacent area mobility parameter and the common factor of the scope of the first adjacent area mobility parameter that self calculates, and as if energy, then obtains the adjustment information of the first adjacent area mobility parameter according to this common factor.
Be used to realize that the software of the embodiment of the invention can be stored in storage mediums such as floppy disk, hard disk, CD and flash memory.
In the embodiment of the invention, the 2nd eNB sends the adjusting range of the first adjacent area mobility parameter to an eNB; The one eNB determines a value and sends to the 2nd eNB from adjusting range; The 2nd eNB determines the value or the adjustment amount of the second adjacent area mobility parameter according to the value or the adjustment amount of the first adjacent area mobility parameter; An eNB and the 2nd eNB adjust mobility parameter separately then, with realization load balancing, and have improved the success rate of consulting and have reduced mutual flow process.Switch in order to prevent table tennis, the embodiment of the invention provides warranty term, and the 2nd eNB agrees to consult when satisfying warranty term, and more suitable adjusting range is provided.And, in the embodiment of the invention, when heavy load and overload appear in the sub-district, need carry out load balancing with neighbor cell; The light hours are reduced to from heavy load in the sub-district, also can carry out load balancing with neighbor cell, to give full play to the bearing capacity of network.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.