CN1278581C - Method for realizing laminated plot interlayer loading balance - Google Patents
Method for realizing laminated plot interlayer loading balance Download PDFInfo
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- CN1278581C CN1278581C CN 03136311 CN03136311A CN1278581C CN 1278581 C CN1278581 C CN 1278581C CN 03136311 CN03136311 CN 03136311 CN 03136311 A CN03136311 A CN 03136311A CN 1278581 C CN1278581 C CN 1278581C
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Abstract
The present invention discloses a method for realizing load balance between layers of layering sub-zones, which comprises the following steps: 1), a load target value and a load quasi primer limiting value are set for each sub-zone of each layer in the layering sub-zone structure; 2), each sub-zone carries out load evaluation and judges that whether the current load of the sub-zone exceeds the load target value; when the load of the sub-zone exceeds the load target value, partial users in the sub-zone are selected and switched to the target sub-zones within the load quasi primer limiting value of the current load in the adjacent layer of the layer of the sub-zone. The method of the present invention greatly relieves the congestion of the sub-zone, doesn't cause the congestion of sub-zones in the adjacent layer and enhances the stability of systems.
Description
Technical field
The present invention relates to the realization technology of layered cell structure in the cell mobile communication systems (HCS), particularly a kind of method that realizes floored community interlayer load balance.
Background technology
In the existing cell mobile communication systems, usually a big geographic area coverage is divided into some sub-districts, use low power transmitter (base station) to cover each sub-district, set up communication with the user, the covering radius of sub-district is less, but many sub-districts just can cover whole big geographic area.Simultaneously, use identical frequency, can greatly improve the utilance of frequency spectrum resource in different sub-districts; And increase the sub-district of using different frequency in the intensive zone of user, then can improve this regional power system capacity.
When travelling carriage (UE) leaves a sub-district and enters the another one sub-district, the signal of the original sub-district that this travelling carriage is received inevitable more and more a little less than, and its received signal that enters the sub-district will be more and more stronger just also.In order to keep the communication quality of travelling carriage, continuing of this travelling carriage must be transferred to the stronger base station of signal that newly enters from original base station, the notion of switching in Here it is the cell mobile communication systems.
Along with increasing of cell mobile communication systems user, will higher requirement be proposed to power system capacity in some marketplaces, commercial center, bustling location, so just must increase more small cell increases power system capacity, so cell mobile communication systems begins to adopt the HCS layered cell structure.
The HCS layered cell structure is referring to Fig. 1, and Fig. 1 is a HCS layered cell structure schematic diagram.Fig. 1 is the HCS structure of three layers of branches, in actual applications, may divide two-layer or divides more multi-layered time.An ellipse among Fig. 1 is exactly a sub-district, and the sub-district has different coverages according to the difference of its planning purpose.For the general area in sub-district that satisfy to cover requires is bigger, and for the general area in the sub-district of satisfying capacity requirement less.In general, macrocell layer is used to handle the mobile station service of fast moving, and microcell level is used to handle the mobile station service that moves at a slow speed, the mobile station service that intermediate layer handles moves relative to middling speed.The speed threshold of the travelling carriage of every layer of processing can be adjusted within the specific limits according to actual conditions.
The introducing of HCS layered cell structure has brought the problem of a reality, and that is exactly user's the influence that switching is caused of moving.Switching is the transfer process that UE is connected with cell base station, and this process need carries out the mutual of many signalings between UE and network, comprising: measure control, measurement report, switching command, order affirmation etc.And the handshaking procedure that connects certainly will cause instantaneous influence to communication service.Area is bigger when the sub-district, and under the lower situation of UE translational speed, it is not high to switch the frequency that takes place, so the signaling that causes of handoff procedure increases that influence is not very big concerning whole system, also can stand the temporary impact user of business; But along with diminishing of sub-district, imagine when UE is connected microcell level, if the translational speed of UE is very high, that switching will take place very frequently.Obviously, if the user of a lot of fast moving keeps when communicating and being connected of Microcell in the floored community, then for whole system, frequent hand off signaling will cause the rapid rising of signaling load, even may cause the congested of signaling, have a strong impact on intrasystem other function and overall performance.Simultaneously, too much switching concerning communication in the user, also can produce certain influence, for example decline of communication quality, raising of cutting off rate or the like.
The conventional method that addresses this problem is according to user's translational speed the user to be dispatched: the thresholding A and the B of two speed at first are set, and wherein A is greater than B.When user's translational speed during greater than thresholding A, then this user is considered to the high-speed mobile user, when user's speed during less than thresholding B, then this user to be taken as be low speed user.Here, speed threshold was meant in the unit interval, the switching times of user between this layer sub-district.Then according to the speed court verdict, the user that system's high speed is moved is assigned to the macrocell in the macrocell layer with bigger radius of society, the user that low speed is moved is assigned to the Microcell that has in the less microcell level of radius of society, and the user between A, B is assigned to the sub-district, intermediate layer with speed circle.Like this, floored community also can be limited in intrasystem user's switching in the reasonable range when the big covering of big capacity is provided simultaneously.
Everything is both advantageous and disadvantageous, can reduce switching though according to translational speed the user is dispatched, because user's speed has only been considered in this scheduling, and does not have the loading condition of taking into account system, so loading problem also just emerges thereupon.Microcell level herein is relative notion, and it is less relatively to refer to area, for satisfying the level that sub-district that capacity requirement plans is formed, does not refer in particular to which layer.Macrocell layer also is a relative notion, and it is relatively large to refer to area, covers the level that the sub-district of plan is formed for satisfying, and does not refer in particular to which layer.With regard to this definition, " intermediate layer " as shown in Figure 1 also is a macrocell layer for " microcell level ", below still uses the title in " intermediate layer " for clarity.Though the microcell level in the HCS layered cell structure is in order to satisfy the requirement of capacity, if but number of users is saturated, at some constantly because the burst transfer of user data service may cause the sub-district total load overweight, system's overall performance descends, thereby other users in the sub-district are impacted, and quality of service can't reliably be guaranteed.
Switch because HCS floored community network has been introduced the interlayer that is triggered by velocity estimation, so the user of friction speed will be assigned to different levels, when the number of users that concentrates on certain speed interval is bigger.Will be very crowded in this level, for example when the work hours vehicle flowrate very big, and communication load is also very big the time, congestion phenomenon will take place in relevant level.
Prior art solves congested method: when a level takes place dynamically to adjust the thresholding that this interval velocity is estimated when congested, by handoff algorithms between the velocity estimation trigger layer, the user of level of congestion switched in other levels go.
But the velocity estimation thresholding comes into force at a level, but will certainly influence its adjacent level after the thresholding adjustment of a level, and this is because after the adjustment of the thresholding of a level, can certain customers be switched to adjacent level according to new thresholding.And the scope that level covers is very big, and like this, user distribution inhomogeneous makes the congested local feature that has.For example: macrocell among Fig. 1 and sub-district, intermediate layer are adjacent layers, if in the A area is that macrocell is congested, and the B area is the intermediate layer small area jam just, at this moment, dynamically adjust macrocell velocity estimation thresholding, this interval velocity thresholding is improved, then the certain customers of speed between former thresholding and new thresholding can be adjusted to the sub-district, intermediate layer, so really, can solve the congestion situation in A area, but increase the weight of the congestion situation in B area, can't make the best of both worlds.
As seen, prior art can not solve the problem of small area jam fully, can not guarantee the stability of system.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method that realizes floored community interlayer load balance, alleviate this small area jam as much as possible, and can not cause its adjacent level small area jam, improve the stability of system.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of method that realizes floored community interlayer load balance, this method may further comprise the steps:
1) each sub-district for each level in the layered cell structure is provided with a load target value and a load access threshold value;
2) load evaluation is carried out in each sub-district, judge whether this sub-district present load surpasses load target value, when the load of a sub-district surpasses its load target value, in this sub-district, select certain customers switch to this cell layer time adjacent layer time in the Target cell of present load in load access threshold value in.
This method may further include: switch sign for each user of being switched by the sub-district is provided with a load balance, which being differentiated for the sub-district is to switch the user who comes by load balance.
Described load balance switches sign, removes in the time of can changing at the speed state of its identifying user; Also can when being complementary, the speed state of its identifying user and its place level remove.
Described load target value of step 1) and load access threshold value, the actual user's distribution situation according to this sub-district in the time of can being the load limit that can bear according to each sub-district and the network planning is provided with.
Described step 2) in, load evaluation can be carried out by predetermined period in each sub-district; Also can carry out carrying out when access is adjudicated load evaluation to the user in the sub-district.
Step 2) the selection prerequisite that the selection certain customers described in switch can for: select to have only the non-real-time data business, do not have speech business, and be not in the user of soft changing state.
Step 2) the selection priority that the selection certain customers described in switch can be switching is come in interlayer balancing method of loads adjustment process user Zi high successively to low; Or user's speed state and this level do not match, and should carry out interlayer and switch the user who but temporarily rests on this layer; Or the user who selects at random.
Described step 2) may further include, select the number of users method for determination of amount: load is carried out in this sub-district estimate, select to switch number of users and can guarantee that the total load in sub-district is no more than load target value and gets final product.
Step 2) may further include the system of selection of the hierarchy of objectivies: for switch the user who comes in interlayer balancing method of loads adjustment process, the initial level of selecting this user to switch is the hierarchy of objectivies; Or the adjacent level of selecting to be complementary with present speed according to user's present speed state is the hierarchy of objectivies; Or directly select speed state to be the hierarchy of objectivies than the fast last layer of this layer.
This method may further include: after the user was switched in the Target cell of adjacent level, this user's of this sub-district present speed state was set to be complementary with the speed state definition of Target cell place level.
Step 2) may further include the system of selection of Target cell: select best in qualityly in adjacent level, and the sub-district that present load is lower than load access threshold value is a Target cell.
Step 2) may further include: when the user that selected Target cell refusal acceptance is switched, abandon this switching; Or select quality time good, and the sub-district that present load is lower than load access threshold value is that Target cell switches.
Step 2) switching described in can be to switch with the interlayer that the method for alien frequencies direct-cut operation is carried out.
This method can further include: after the user was switched in the Target cell of adjacent level, this sub-district was switched and is forbidden timer for this user starts an interlayer, and this user does not allow to be carried out once more interlayer and switches in timing.
By technical scheme of the present invention as seen, the method of this realization floored community interlayer load balance of the present invention, by load evaluation is carried out in the sub-district, when present load surpasses load target value, certain customers in this sub-district are switched in the sub-district of present load within load access threshold value of adjacent level, greatly alleviate this small area jam, and can not cause its adjacent level small area jam, improved the stability of system.
Description of drawings
Fig. 1 is a HCS layered cell structure schematic diagram;
Fig. 2 is the flow chart of an interlayer balancing method of loads of the present invention embodiment.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in more detail.
The present invention is to realize that in three layers of HCS structure shown in Figure 1 the interlayer load balance is embodiment.
For the convenience that illustrates, do a hypothesis earlier: suppose that with speed estimation algorithms each UE being made a speed state estimates (fast, normally, at a slow speed), this level is too fast relatively for the mobile status of this UE of expression fast, need switch to adjacent last layer goes, this level is just right relatively for the mobile status of normal this UE of expression, the mobile status of representing this UE at a slow speed is slow with respect to this level, can adjust to adjacent following one deck goes, for example: in the HCS structure shown in Figure 1, the current layer sub-district that mediates of UE, its speed state is normal, then need not switch, if next is constantly, its speed state is fast, then this user is switched to last layer---macrocell layer; If next is constantly, its speed state then switches to down one deck with this user at a slow speed---microcell level.Certainly, if speed estimation algorithms can provide more accurate velocity estimation, also can be mapped in these three states and go.Need to prove that the definition that speed state is estimated is relevant with level, for the constant same UE of speed, may be defined by " at a slow speed " if it is in macrocell layer, is in microcell level and then is defined as " fast " probably.The interlayer balancing method of loads of explaining does not below also rely on this hypothesis, and this patent comprises but is not limited to this a kind of hypothesis.
Load balance in the present embodiment hypothesis level can't solve the congestion situation of sub-district, and it mainly comprises:
(1) for each sub-district in the HCS layered cell structure network load target value (for example 75%) and load access threshold value (for example 30%) are set, the working load assessment strategy is weighed the present load of each sub-district, just thinks system overload when load surpasses desired value.
(2) taking user's selection strategy to select certain customers to carry out interlayer switches.
(3) take the target selection strategy to select different layer Target cell for each user.
(4) carry out taking after interlayer switches effect to guarantee that strategy ensures the load balance effect.
Detailed process is referring to Fig. 2, and Fig. 2 is the flow chart of an interlayer balancing method of loads of the present invention embodiment.Before entering flow process shown in Figure 2, for determining a load target value (for example 75%) and load access threshold value (for example 30%) in each sub-district in the HCS layered cell structure network, the load target value of different districts can be different with load access threshold value, and load limit that can bear according to each sub-district and this sub-district actual user's distribution are provided with.For example: two sub-district A, B with layer, if A sub-district actual user measures greatly, the B cell users is less relatively, then the ratio B sub-district tip that the load target value of A sub-district can be provided with is big.If there has been the load balancing algorithm in the layer in system, this load target value should be than the load-threshold value height of layer internal burden balanced algorithm so.
As shown in Figure 2, this method is further comprising the steps of:
Step 201, the working load appraisal procedure is monitored cell load.Load evaluation can be carried out by predetermined period in each sub-district in the present embodiment; Or insert or the user is switched and carried out load evaluation when entering the sub-district new user.
If carry out load evaluation by predetermined period, the cycle can establish longlyer.
If insert or the user is switched and carried out load evaluation when entering the sub-district new user, then by access algorithm triggers load evaluation process.Trigger once such as every N access, perhaps each access all triggers the load evaluation process.
Wherein, the access algorithm is a prior art, is an indispensable algorithm in the communication system, carries out business when being connected as mobile subscriber application and this sub-district, determines whether allow to connect by the access algorithm.Have two the opportunity that the access algorithm comes into force, the one, new user when this sub-district makes a call, the 2nd, when the user applies of neighbor cell switches to this sub-district and continues its service.
It is as follows that each access all triggers the load evaluation process: at first the loading condition of estimating current area with the load evaluation method how, if estimate according to the business of user applies then and allow to set up professional the connection, will cause great growth (Here it is load estimation) to the loading condition of sub-district, if behind the growth of load still in the scope that the sub-district can be born, access then, otherwise refusal.Go whistle if switch, then select other sub-districts.
The load evaluation method also is a kind of prior art, it is a kind of appraisal procedure to the current area loading condition, be divided into uplink and downlink, down load refers to the emission load of sub-district, watt level for example, ascending load refers to the reception load of sub-district, and for example (community user is many more for noise level, the various signals that the sub-district receives are just many more, and noise level is high more).The transmitting-receiving ability of sub-district is limited by the physical characteristic of equipment, transmitting power can not unrestrictedly rise, receiving sensitivity is also restricted, noise too big just correctly restituted signal (if just look like 8 people simultaneously in a minute to a people, whom this people do not hear with regard to yet).Therefore only in a reasonable range, the sub-district could be mobile subscriber's normal service in load.
Step 202 judges whether this sub-district present load surpasses load target value, and the actual loading up to the sub-district has surpassed desired value, just thinks that this cell load is overweight, enters step 203.
Step 203 begins to carry out the load adjustment, selects certain customers to prepare to carry out the interlayer sub-district in this sub-district and switches.Have only satisfy following condition just be used as candidate user:
1. have only the non-real-time data business, do not have speech business,
2. be not in soft changing state, soft changing state be meant the user switch back and original sub-district disconnection at once be connected, be connected but can exist simultaneously with several sub-districts, the precondition of soft handover is that these several sub-districts must have identical tranmitting frequency.
Wherein satisfy the preferential selection of following condition:
1. in interlayer balancing method of loads adjustment process, switch the user who comes,
2. user's speed judgement state is not " normally ", and promptly this user's speed state and this level do not match, and should switch in other levels originally and go, and is still former thereby temporarily rest on this layer because of certain.
If the user under above-mentioned equal conditions, or then selects the user when not having above-mentioned user in the sub-district at random.
Determining of candidate user quantity: this part can use the load of similar access algorithm to estimate to carry out, and can to guarantee that the total load level in sub-district reaches a proper level that is no more than load target just passable when the quantity of selecting.
Step 204 is user's select target level and the Target cell of selecting.The system of selection of the hierarchy of objectivies comprises:
If 1. this user is switched after by the adjustment of interlayer balancing method of loads and come, so this user is switched back initial level.
If 2. this user's speed state estimates it is not " normally ", then estimate to come the select target level according to its speed state.For example, concerning the user of a current layer sub-district that mediates.If next constantly this user's speed state be estimated as " fast ", then with adjacent macrocell layer as the hierarchy of objectivies; If next constantly this user's speed state be estimated as " at a slow speed ", then with adjacent microcell level as the hierarchy of objectivies.
3. under other situations, with adjacent macrocell layer as the hierarchy of objectivies.
Object cell selection method is: select best in quality in the hierarchy of objectivies and present load is lower than the sub-district of load access thresholding as Target cell.In Wideband Code Division Multiple Access (WCDMA) (WCDMA) system, each sub-district has a channel to be called Common Pilot Channel (CPICH), and the sub-district uses fixing power ceaselessly by this channels transmit broadcast.Because cell transmit power is fixed, so mobile phone receives this channel and just can judge oneself in the service range of which sub-district according to the signal quality that receives, the quality of this sub-district how.According to the agreement of 3GPP, signal quality criterion has two, and one is received signal code power (RSCP), and one is a yard power/noise level (Ec/No), and the former is big more, and the explanation signal is strong more, and the latter is big more, and the explanation signal is clear more.The general quality of using Ec/No to judge the sub-district, but the present invention does not limit and only uses this index.
If the user that the acceptance of selected Target cell refusal is switched then can abandon this switching; Also can select quality time good, and the sub-district that present load is lower than load access threshold value is a Target cell.
Step 205 switches to the user who selects in the Target cell of the hierarchy of objectivies of selection.Use the alien frequencies direct-cut operation that candidate user is switched to Target cell.
The alien frequencies direct-cut operation refers to promptly be connected with the disconnection of original sub-district after the user is switched with respect to soft handover, whenever all only exists with a sub-district to be connected.Since it is so,, just can only do direct-cut operation, Here it is alien frequencies direct-cut operation if the Target cell that switches of user and original sub-district use so is different tranmitting frequencies.Said HCS floored community is the alien frequencies layering among the present invention, and promptly macrocell layer is different with the frequency of microcell level use.
Step 206, in Target cell, the user who comes for switching handles, the effect of proof load balance.Because RNC can estimate UE is adjusted to suitable level automatically according to the speed state of UE in the network that has adopted the HCS layered cell structure.The interlayer balancing method of loads then is that the user with overloaded cells has switched to other levels, may cause the speed state of UE and residing level not to match, then between very fast trigger layer balancing method of loads again switchback come.Therefore must take effect to guarantee that strategy comes the effect of proof load balanced algorithm.
The method that present embodiment is taked is: after the adjustment of interlayer load balancing algorithm finished, network added that to the user of each adjustment load balance switches sign, identifies this user and is come by the switching of interlayer load balancing algorithm.And its velocity estimation state initial value at new level is set for each controlled user, this initial value is complementary with the speed state definition of new level, for example:, the initial velocity estimated state then is set is " at a slow speed " if this user switches to the macrocell layer sub-district from the sub-district, intermediate layer; If this user switches to the microcell level sub-district from the sub-district, intermediate layer, the initial velocity estimated state then is set is " fast ".
Simultaneously, switch and forbid timer for the user of each adjustment starts an interlayer.Forbidding doing interlayer in this timer timing switches again, owing to switch between velocity estimation state change meeting trigger layer, therefore add here and forbid that main is exactly in order to prevent that this user from being switched back in original level by speed estimation algorithms, to guarantee the adjustment effect of interlayer balancing method of loads.
In addition, present embodiment also switches sign to load balance safeguards that method is: this sign pre-sets for starting load balanced algorithm next time, and a part of prior information that the user selects in the balancing method of loads is provided.Based on various considerations, the maintenance of this sign also can have several different methods.Here provide wherein two kinds: consider that velocity variations may take place this user, the interlayer that can allow velocity estimation trigger switches to be handled, and removes this sign in the time of therefore can changing at this user's velocity estimation state; Consider as long as this user velocity state can not allow it transfer to load balancing algorithm adjustment with current level coupling, so only the velocity estimation state this user becomes " normally ", just this sign is removed when promptly this UE has been complementary with level of living in.
By the above embodiments as seen, the method of this realization floored community interlayer load balance of the present invention, solved the load balance problem of introducing after the HCS floored community network configuration, because interlayer load balancing algorithm of the present invention can act synergistically with the balancing method of loads in the no HCS network, reaches the optimization of network.Simultaneously, the present invention has taken all factors into consideration business, speed, switching state and has selected the user, comes the select target sub-district according to HCS level priority and load condition, reduces the influence of optimization method to user communication quality to greatest extent.HCS level priority is by the agreement regulation, and which is a macrocell layer to distinguish two adjacent levels by this, and which is a microcell level.In addition, the present invention has considered that also the adjusted effect of load balance guarantees, makes algorithm possess real feasibility, and additional switching sign is safeguarded and made the inventive method to be connected with the interlayer handover seamless that the intrinsic velocity estimation of HCS triggers.Determine load target towards each sub-district rather than adjust thresholding at whole level, make the interlayer load balance to finish at indivedual Hot Spot, and can not influence with other sub-district of layer, this real network environment for the load uneven distribution has more applicability.
Claims (14)
1, a kind of method that realizes floored community interlayer load balance is characterized in that, this method may further comprise the steps:
1) each sub-district for each level in the layered cell structure is provided with a load target value and a load access threshold value;
2) load evaluation is carried out in each sub-district, judge whether this sub-district present load surpasses load target value, when the load of a sub-district surpasses its load target value, in this sub-district, select certain customers switch to this cell layer time adjacent layer time in the Target cell of present load in load access threshold value in.
2, the method for claim 1 is characterized in that, this method further comprises: switch sign for each user of being switched by the sub-district is provided with a load balance, which being differentiated for the sub-district is to switch the user who comes by load balance.
3, method as claimed in claim 2 is characterized in that: described load balance switches sign, removes when the speed state of its identifying user changes; Or when being complementary, the speed state of its identifying user and its place level remove.
4, the method for claim 1 is characterized in that: described load target value of step 1) and load access threshold value, the actual user's distribution situation according to this sub-district when being the load limit that can bear according to each sub-district and the network planning is provided with.
5, the method for claim 1 is characterized in that, described step 2) in, load evaluation is carried out by predetermined period in each sub-district; Or in the sub-district user is carried out the access judgement and the time carry out load evaluation.
6, the method for claim 1 is characterized in that step 2) described in the selection prerequisite switched of selection certain customers be: select to have only the non-real-time data business, do not have speech business, and be not in the user of soft changing state.
7, the method for claim 1 is characterized in that step 2) described in the selection priority switched of selection certain customers be followed successively by to low Zi high: the user that switching is come in interlayer balancing method of loads adjustment process; Or user's speed state and this level do not match, and should carry out interlayer and switch the user who but temporarily rests on this layer; Or the user who selects at random.
8, as claim 1,6 or 7 described methods, it is characterized in that, described step 2) further comprises, select the number of users method for determination of amount: load is carried out in this sub-district estimate, select to switch number of users and can guarantee that the total load in sub-district is no more than load target value and gets final product.
9, the method for claim 1 is characterized in that step 2) further comprise the system of selection of the hierarchy of objectivies: for switch the user who comes in interlayer balancing method of loads adjustment process, the initial level of selecting this user to switch is the hierarchy of objectivies; Or the adjacent level of selecting to be complementary with present speed according to user's present speed state is the hierarchy of objectivies; Or directly select speed state to be the hierarchy of objectivies than the fast last layer of this layer.
10, method as claimed in claim 9, it is characterized in that, this method further comprises: after the user was switched in the Target cell of adjacent level, this user's of this sub-district present speed state was set to be complementary with the speed state definition of Target cell place level.
11, as claim 1 or 9 described methods, it is characterized in that step 2) further comprise the system of selection of Target cell: select best in qualityly in adjacent level, and the sub-district that present load is lower than load access threshold value is a Target cell.
12, method as claimed in claim 11 is characterized in that step 2) further comprise: when the user that selected Target cell refusal acceptance is switched, abandon this switching; Or select quality time good, and the sub-district that present load is lower than load access threshold value is that Target cell switches.
13, the method for claim 1 is characterized in that: step 2) described in switching be that the interlayer that carries out with the method for alien frequencies direct-cut operation switches.
14, as claim 1 or 10 described methods, it is characterized in that, this method further comprises: after the user was switched in the Target cell of adjacent level, this sub-district was switched and is forbidden timer for this user starts an interlayer, and this user does not allow to be carried out once more interlayer and switches in timing.
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| CN102595500B (en) * | 2011-01-14 | 2016-02-10 | 中兴通讯股份有限公司 | load management method and device |
| CN102685776B (en) * | 2011-03-08 | 2017-03-15 | 中兴通讯股份有限公司 | The method and device that cell load is reduced by CoMP technology |
| CN102281605A (en) * | 2011-08-01 | 2011-12-14 | 中兴通讯股份有限公司 | Method and device for switching services |
| CN102625369B (en) * | 2012-03-16 | 2014-07-09 | 东南大学 | Load balancing optimization method for guaranteeing quality of service requirements of users of different levels in classified manner |
| CN102752824B (en) * | 2012-06-29 | 2015-09-09 | 中国联合网络通信集团有限公司 | Different-system switching method and device |
| CN103716839A (en) * | 2012-10-09 | 2014-04-09 | 中国移动通信集团公司 | Method and apparatus for load balancing configuration among base stations, and wireless network system |
| US9320049B2 (en) * | 2012-10-22 | 2016-04-19 | Qualcomm Incorporated | User admission for co-existence wireless systems |
| CN104581827A (en) * | 2013-10-29 | 2015-04-29 | 中国移动通信集团公司 | Load balance method and device |
| CN103763747B (en) * | 2014-02-21 | 2017-03-08 | 重庆邮电大学 | A kind of method realizing dynamic load leveling in heterogeneous network |
| CN104202800B (en) * | 2014-07-09 | 2018-03-27 | 京信通信系统（中国）有限公司 | A kind of Home eNodeB power-economizing method, apparatus and system |
| CN105323798A (en) * | 2014-07-24 | 2016-02-10 | 普天信息技术有限公司 | Load balancing method and base station |
| CN104333879B (en) * | 2014-10-29 | 2018-03-06 | 中国联合网络通信集团有限公司 | A kind of load share method and device |
| CN110930665A (en) * | 2019-12-16 | 2020-03-27 | 北京码牛科技有限公司 | Multi-channel information management and early warning method and early warning system based on multiple types of sensors |
-
2003
- 2003-05-26 CN CN 03136311 patent/CN1278581C/en not_active Expired - Lifetime
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