CN103379574B - Method for handover control, Apparatus and system - Google Patents
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Abstract
Embodiments of the invention provide a kind of method for handover control, Apparatus and system, relate to communication technical field, and the method comprises: determine multiple candidate user devices UE; Handover measurement Indication message is sent to described multiple candidate UE; Receive the respective measurement result that described multiple candidate UE reports, described measurement result comprises: one or more candidate adjacent and described candidate adjacent signal measurements separately; Signal measurements according to described candidate adjacent determines multiple object UE from described multiple candidate UE, and the target adjacent area that described multiple object UE is switched to separately is determined from each self-corresponding candidate adjacent of described multiple object UE, the target adjacent area that described multiple object UE is switched to separately is different.Embodiments of the invention effectively can reduce the Congestion Level SPCC of community, and improve the success rate switched.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method for handover control, Apparatus and system.
Background technology
UMTS (UniversalMobileTelecomSystem) wireless communication system is widely deployed in worldwide.In order to provide faster more substantial information transmission, telecom industry servers are developing existing network.Such as, UMTS system is further developed into so-called evolution UMTS Terrestrial radio access network network, also referred to as LTE wireless communication system or 3.9G system.This system, by raising the efficiency, reduces costs, and exploitation service, utilizes new spectrum opportunities, the technology that the means such as integrated are upgraded comparatively early with other standard better.
In LTE, the framework of Radio Network System is from not only support circuit-switched but also support that packet switching develops into the system of a pure IP, pure packet switching.Framework and its core network of whole eUTRAN (evolvedUMTSTerrestrialRadioAccessNetwork) become simpler, both combines formation EPS (EvolvedPacketSystem), is also called SAE (SystemArchitectureEvolution).
In current LTE, basic framework comprises a Radio Access Network (eUTRAN), and it connects multiple UE (UserEquipment, subscriber equipment) and multiple access node as a base station, simultaneously mutual with core net.In eUTRAN, access node is called as eNodeB or eNB.In eUTRAN, eNB is exclusive node type, and the cordless communication network relatively which simplify framework.The core net that eNB connects in LTE is called EPC (EvolvedPacketCore).
In the EPS be made up of eUTRAN and EPC, there is the restriction in certain operations, comprise physical restriction, such as equipment restriction, parallel compensate, Power Limitation, base station is settled, antenna configuration, noise, environmental factor etc.In addition, these operational restrictions also may derive from the irrational configuration of system.Based mobile communication equipment supplier can provide RRM (RRM, RadioResourceManagement) characteristic in supplied equipment.The congestion problems that this radio management characteristic can regulate factor data amount, signaling amount and number of users in alleviation EPS excessive and cause.Congested in EPS comprises two aspects: one is the congested of eUTRAN wireless access mesh portions, and two is the congested of EPC core network part.In wireless access mesh portions, because user too much in same community and service access are on same eNB, competition takies the limited resource that this eNodeB has, thus causes the PRB in this community (PhysicalResourceBlock) shortage and cannot ensure the QoS (QualityofService) of business.
In prior art, congested in community, a kind of conventional method is: the base station in cell-of-origin judges that whether UE is sent to the signal power of base station in this cell-of-origin lower than a certain threshold value, if UE is sent to the signal power of base station in cell-of-origin lower than a certain threshold value, then UE is switched to Target cell, to reach the load reducing cell-of-origin, and then the object of the Congestion Level SPCC of reduction cell-of-origin.But, adopt the method, if UE is sent to the signal power of base station in cell-of-origin not lower than threshold value, even if under described cell-of-origin is in congestion state, also UE cannot be switched to Target cell, thus also just cannot reduce the load of cell-of-origin, the Congestion Level SPCC of cell-of-origin cannot be reduced.
Another kind of conventional method is: carry out load information exchange between base station, selects UE to switch by load balancing.But adopt the method to need to possess load information Fabric Interface between base station, for the system lacking load information Fabric Interface between base station, this method is also inapplicable.If still adopt the method, then can cause in handoff procedure, multiple UE is likely switched to same adjacent area by cell-of-origin, the load of this adjacent area is caused to increase suddenly, make part UE handoff failure, the success rate of switching is lower, and then also cannot effectively reduce the Congestion Level SPCC of cell-of-origin.
Summary of the invention
Embodiments of the invention provide a kind of method for handover control, Apparatus and system, effectively can reduce the Congestion Level SPCC of community, and improve the success rate switched.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of method for handover control, comprising:
Determine multiple candidate user devices UE;
Send handover measurement Indication message to described multiple candidate UE, to trigger described multiple candidate UE, signal measurement is carried out to adjacent area, and report measurement results;
Receive the respective measurement result that described multiple candidate UE reports, described measurement result comprises: one or more candidate adjacent and described candidate adjacent signal measurements separately;
Signal measurements according to described candidate adjacent determines multiple object UE from described multiple candidate UE, and the target adjacent area that described multiple object UE is switched to separately is determined from each self-corresponding candidate adjacent of described multiple object UE, the target adjacent area that described multiple object UE is switched to separately is different.
A kind of switching control, comprising:
Determination module, for determining multiple candidate user devices UE;
Sending module, for sending handover measurement Indication message to described multiple candidate UE, carries out signal measurement to trigger described multiple candidate UE to adjacent area, and report measurement results;
Receiver module, for receiving the respective measurement result that described multiple candidate UE reports, described measurement result comprises: one or more candidate adjacent and described candidate adjacent signal measurements separately;
Switching controls module, from described multiple candidate UE, multiple object UE is determined for the signal measurements according to described candidate adjacent, and the target adjacent area that described multiple object UE is switched to separately is determined from each self-corresponding candidate adjacent of described multiple object UE, the target adjacent area that described multiple object UE is switched to separately is different.
A kind of handover control system, comprises above-mentioned switching control and multiple user equipment (UE).
In the embodiment of the present invention described by technique scheme, the base station of this community is when carrying out cell merge and controlling to the UE in this community, the signal measurements of the candidate adjacent that the base station of this community reports according to candidate UE determines multiple object UE from described multiple candidate UE, and the target adjacent area that described multiple object UE is switched to separately is determined from each self-corresponding candidate adjacent of described multiple object UE, the target adjacent area that described multiple object UE is switched to separately is different.Base station due to this community is that the target adjacent area be switched to separately that multiple object UE is selected is different, thus the UE avoided in prior art Zhong Huijiangzhe community is switched to same adjacent area and causes the load of this adjacent area to increase suddenly, cause part UE handoff failure, the problem of this small area jam degree cannot be effectively reduced.
Compared with prior art, technical scheme provided by the invention, when community is in congestion state, effectively can reduce the Congestion Level SPCC of community, and improves the success rate switched; When not being in congestion state in community, also can carrying out switching controls to the UE in community, enter congestion state to prevent community.
Further, technical scheme provided by the invention does not need to possess load information Fabric Interface between base station, such as, thus, for the communication system lacking load information Fabric Interface between base station, based on the communication system of X2 interface information interaction, can be suitable for yet.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 provides a kind of flow chart of method for handover control for the embodiment of the present invention 1;
Fig. 2 provides the realization flow figure of step 101 in a kind of method for handover control for the embodiment of the present invention 1;
Fig. 3 provides the realization flow figure of step 104 in a kind of method for handover control for the embodiment of the present invention 1;
The flow chart of the another kind of method for handover control that Fig. 4 provides for the embodiment of the present invention 1;
Fig. 5 provides a kind of structure chart of switching control for the embodiment of the present invention 2;
Fig. 6 provides the structure chart of determination module 11 in a kind of switching control for the embodiment of the present invention 2;
Fig. 7 provides the structure chart of switching controls module 14 in a kind of switching control for the embodiment of the present invention 2.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1:
The embodiment of the present invention provides a kind of method for handover control, and as shown in Figure 1, the executive agent of the method is the base station in community, and this base station includes but not limited to eNodeB or eNB in LTE system, the NodeB in cdma system.The method comprises:
101, multiple candidate user devices UE is determined.
Such as, multiple candidate UE is determined in the base station of this community from each UE of this community.
102, send handover measurement Indication message to described multiple candidate UE, to trigger described multiple candidate UE, signal measurement is carried out to adjacent area, and report measurement results.
103, receive the respective measurement result that described multiple candidate UE reports, described measurement result comprises: one or more candidate adjacent and described candidate adjacent signal measurements separately.
It should be noted that, in order to reduce handoff delay, in a step 102, while the base station transmission handover measurement Indication message of this community, a timer can be set.When reaching the time set by this timer, when the base station of this community does not receive the measurement result of certain candidate UE yet, then think that the surrounding of this candidate UE does not have suitable candidate cell.
104, from described multiple candidate UE, multiple object UE is determined according to the signal measurements of described candidate adjacent, and the target adjacent area that described multiple object UE is switched to separately is determined from each self-corresponding candidate adjacent of described multiple object UE, the target adjacent area that described multiple object UE is switched to separately is different.
In the embodiment of the present invention described by technique scheme, the base station of this community is when carrying out cell merge and controlling to the UE in this community, the signal measurements of the candidate adjacent that the base station of this community reports according to candidate UE determines multiple object UE from described multiple candidate UE, and the target adjacent area that described multiple object UE is switched to separately is determined from each self-corresponding candidate adjacent of described multiple object UE, the target adjacent area that described multiple object UE is switched to separately is different.Base station due to this community is that the target adjacent area be switched to separately that multiple object UE is selected is different, thus the UE avoided in prior art Zhong Huijiangzhe community is switched to same adjacent area and causes the load of this adjacent area to increase suddenly, cause part UE handoff failure, the problem of this small area jam degree cannot be effectively reduced.
Compared with prior art, technical scheme provided by the invention, when community is in congestion state, effectively can reduce the Congestion Level SPCC of community, and improves the success rate switched; When not being in congestion state in community, also can carrying out switching controls to the UE in community, enter congestion state to prevent community.
Further, technical scheme provided by the invention does not need to possess load information Fabric Interface between base station, such as, thus, for the communication system lacking load information Fabric Interface between base station, based on the communication system of X2 interface information interaction, can be suitable for yet.
It should be noted that, the scheme that the embodiment of the present invention provides can be adapted to but be not limited to, in LTE system, hereafter be described in detail to said method for LTE system.
Further, as shown in Figure 2, in above-mentioned steps 101, determine that multiple candidate user devices UE can realize in the following way:
101-1, receive the signal measurements that each UE sends, described signal measurements is the signal measurements obtained after UE carries out signal measurement to this community, and described signal measurements is less, for represent described UE and this community described base station between distance far away;
Optionally, in LTE system, described signal measurements is the RSRP measured value that UE carries out this community obtaining after RSRP (LTEReferenceSignalReceivedPower, Reference Signal Received Power) measures.This RSRP measured value is the linear average of the signal power obtained after the RS (ReferenceSignal, reference signal) of UE to the some REs (ResourceElement) from base station measures.
When the base station of UE distance community is nearer, the RSRP measured value of this community that this UE records is larger, otherwise when the base station of UE distance community is far away, the RSRP measured value of this community that this UE records is less.Thus, by comparing the size of this RSRP measured value, the distance of the spacing of UE and community can be learnt.
101-2, UE corresponding for all signal measurements being less than predetermined threshold value is defined as candidate UE.
Wherein, be less than the UE that all signal measurements of predetermined threshold value are corresponding, refer to the UE being positioned at this cell edge.Due to UE be positioned at this cell edge time, the success rate being switched to other adjacent areas is higher, thus, chooses the UE alternatively UE being positioned at this cell edge herein, can improve the success rate of switching.
Particularly, after UE corresponding for all RSRP measured values being less than predetermined threshold value can being arranged from small to large according to RSRP measured value, be kept in a handoff list.Afterwards, in a step 102, the base station of this community can select all candidate UE to being kept in this handoff list to send handover measurement Indication message.
Further, in above-mentioned steps 102, the handover measurement Indication message that the base station of this community sends to described multiple candidate UE can pass through RRCConnectionReconfiguration transmitting signaling downwards.After UE carries out RSRP measurement to adjacent area, preiodic type reporting schemes or event mode reporting schemes report measurement results can be adopted.Preferably, when community is in congestion state, general selection event mode reporting schemes.The specific implementation of this preiodic type reporting schemes or event mode reporting schemes see existing correlation technique, can not repeat them here.
Further, as shown in Figure 3, above-mentioned steps 104 can realize in the following way:
104-1, choose the top n candidate adjacent that in candidate adjacent corresponding to each candidate UE, signal measurements is maximum, as the to be switched adjacent area of each candidate UE, described N is positive integer and T >=N >=2, and described T is the minimum value in the sum of each self-corresponding candidate adjacent of each candidate UE.
In order to better understand and describe the embodiment of the present invention, be described when being hereinafter 2 for N value.
Such as, in step 103, the base station of this community receives the respective measurement result that candidate UE1, UE2......UE10 report.
As shown in table 1 below, choose the first two candidate adjacent that in each self-corresponding candidate adjacent of candidate UE1, UE2......UE10, signal measurements is maximum, as the to be switched adjacent area of each candidate UE.Wherein, the to be switched adjacent area of UE1 is the to be switched adjacent area of Cell1 and Cell2, UE2 is Cell2 and Cell3, by that analogy.
Table 1
104-2, calculate candidate UE number corresponding to each to be switched adjacent area.
Optionally, the to be switched adjacent area that each candidate UE that above-mentioned table 1 represents is corresponding, above-mentioned table 1 can be converted to candidate UE corresponding to each to be switched adjacent area, transformation result is as shown in table 2 below.
Table 2
| To be switched adjacent area | Corresponding candidate UE |
| Cell1 | UE1、UE3、UE7 |
| Cell2 | UE1、UE2、UE4、UE8 |
| Cell3 | UE2、UE3、UE7、UE10 |
| Cell4 | UE4、UE6、UE8、UE9 |
| Cell5 | UE5、UE9 |
| Cell6 | UE5、UE6、UE10 |
104-3, size according to the RSRP value of the difference of candidate UE number corresponding to each to be switched adjacent area and two to be switched adjacent areas corresponding to each candidate UE, can specifically be divided into following several situation to process:
(1) when the candidate UE that existence two to be switched adjacent areas are corresponding is identical and number is 1, described candidate UE is defined as object UE, and chooses the target adjacent area that adjacent area that in described two to be switched adjacent areas, signal measurements is larger is switched to as described object UE.
(2) when the candidate UE number that certain to be switched adjacent area is corresponding is 1, described candidate UE is defined as object UE, and described to be switched adjacent area is defined as the target adjacent area that described object UE is switched to.
(3) when the candidate UE number that each to be switched adjacent area is corresponding is all greater than 1, to be switched adjacent area minimum for the candidate UE number of correspondence is defined as target adjacent area, and from candidate UE corresponding to described target adjacent area random selecting candidate UE as object UE.
Such as, in above-mentioned table 2, the number of the candidate UE that Cell5 is corresponding is minimum, then Stochastic choice candidate UE from candidate UE corresponding to Cell5, such as, chooses UE5.Afterwards, the number of the candidate UE that Cell1 with Cell6 is corresponding is identical, then choose object UE the random candidate UE corresponding from Cell1 or Cell6, such as, in the candidate UE that Cell1 is corresponding, chooses UE1.Result is as shown in table 3 below.Wherein, the candidate UE this being defined as object UE marks hook, so that distinguish with candidate UE.
Table 3
| To be switched adjacent area | Corresponding candidate UE | The object UE determined and corresponding Target cell |
| Cell1 | UE1√、UE3、UE7 | UE1-＞Cell1 |
| Cell2 | UE1、UE2、UE4、UE8 | |
| Cell3 | UE2、UE3、UE7、UE10 | |
| Cell4 | UE4、UE6、UE8、UE9 | |
| Cell5 | UE5√、UE9 | UE5-＞Cell5 |
| Cell6 | UE5、UE6、UE10 |
Similar process is carried out again in the basis of above-mentioned table 3, obtains as following table 4.Wherein, on the candidate UE mark this being defined as object UE " √ ", by "×" on the previous candidate UE mark being defined as object UE, so that distinguish with candidate UE.
Table 4
| To be switched adjacent area | Corresponding candidate UE | The object UE determined and corresponding Target cell |
| Cell1 | UE1×、UE3、UE7 | UE1-＞Cell1 |
| Cell2 | UE1×、UE2√、UE4、UE8 | UE2-＞Cell2 |
| Cell3 | UE2、UE3、UE7、UE10 | |
| Cell4 | UE4、UE6、UE8、UE9 | |
| Cell5 | UE5×、UE9 | UE5-＞Cell5 |
| Cell6 | UE5×、UE6√、UE10 | UE6-＞Cell6 |
(4) when the candidate UE number that each to be switched adjacent area is corresponding is all greater than 1 and number is identical, the target adjacent area of the larger to be switched adjacent area of signal measurements corresponding to certain candidate UE as described candidate UE is chosen.
Such as, in above-mentioned table 4, to be switched adjacent area is Cell3 and Cell4, and the candidate UE number of the various correspondence of Cell3 and Cell4 is 3, known according to table 1, in the candidate adjacent that candidate UE4 is corresponding, the RSRP measured value of Cell4 is comparatively large, and the target adjacent area thus selecting UE4 to be switched to is Cell4.The result finally obtained is for shown in following table 5.
Table 5
| To be switched adjacent area | Corresponding candidate UE | The object UE determined and corresponding Target cell |
| Cell1 | UE1×、UE3、UE7 | UE1-＞Cell1 |
| Cell2 | UE1×、UE2×、UE4、UE8 | UE2-＞Cell2 |
| Cell3 | UE2×、UE3√、UE7、UE10 | UE3-＞Cell3 |
| Cell4 | UE4√、UE6×、UE8、UE9 | UE4-＞Cell4 |
| Cell5 | UE5×、UE9 | UE5-＞Cell5 |
| Cell6 | UE5×、UE6×、UE10 | UE6-＞Cell6 |
Further, as shown in Figure 4, said method also comprises:
105, send the switch indicating information carrying corresponding target neighboring BS information to each object UE described, be switched to corresponding target adjacent area to indicate each object UE described.
Such as, shown in above-mentioned table 5, the base station of this community sends the switch indicating information carrying Cell1 information to UE1, be switched to Cell1 to indicate described UE1; The base station of this community sends the switch indicating information carrying Cell2 information to UE2, be switched to Cell2...... to indicate described UE2.
Visible, the target adjacent area be switched to due to each UE is all not identical, again demonstrate the technical scheme provided by the invention UE avoided in prior art Zhong Huijiangzhe community to be switched to same adjacent area and to cause the load of this adjacent area to increase suddenly, cause part UE handoff failure, the problem of this small area jam degree cannot be effectively reduced, effectively can reduce the Congestion Level SPCC of community, and improve the success rate switched.
Embodiment 2:
As shown in Figure 5, the embodiment of the present invention provides a kind of switching control, and this device is specially the base station in community, and this device comprises:
Determination module 11, for determining multiple candidate user devices UE;
Sending module 12, for sending handover measurement Indication message to described multiple candidate UE, carries out signal measurement to trigger described multiple candidate UE to adjacent area, and report measurement results;
Receiver module 13, for receiving the respective measurement result that described multiple candidate UE reports, described measurement result comprises: one or more candidate adjacent and described candidate adjacent signal measurements separately;
Switching controls module 14, from described multiple candidate UE, multiple object UE is determined for the signal measurements according to described candidate adjacent, and the target adjacent area that described multiple object UE is switched to separately is determined from each self-corresponding candidate adjacent of described multiple object UE, the target adjacent area that described multiple object UE is switched to separately is different.
In the embodiment of the present invention, the base station of this community is when carrying out cell merge and controlling to the UE in this community, the signal measurements of the candidate adjacent that the base station of this community reports according to candidate UE determines multiple object UE from described multiple candidate UE, and the target adjacent area that described multiple object UE is switched to separately is determined from each self-corresponding candidate adjacent of described multiple object UE, the target adjacent area that described multiple object UE is switched to separately is different.Base station due to this community is that the target adjacent area be switched to separately that multiple object UE is selected is different, thus the UE avoided in prior art Zhong Huijiangzhe community is switched to same adjacent area and causes the load of this adjacent area to increase suddenly, cause part UE handoff failure, the problem of this small area jam degree cannot be effectively reduced.
Compared with prior art, technical scheme provided by the invention, when community is in congestion state, effectively can reduce the Congestion Level SPCC of community, and improves the success rate switched; When not being in congestion state in community, also can carrying out switching controls to the UE in community, enter congestion state to prevent community.
Further, technical scheme provided by the invention does not need to possess load information Fabric Interface between base station, such as, thus, for the communication system lacking load information Fabric Interface between base station, based on the communication system of X2 interface information interaction, can be suitable for yet.
Further, as shown in Figure 6, described determination module 11 comprises:
Receiving element 11-1, for receiving the signal measurements that each UE sends, described signal measurements is the signal measurements obtained after UE carries out signal measurement to this community;
Determining unit 11-2, for being defined as candidate UE by UE corresponding for all signal measurements being less than predetermined threshold value.
Further, as shown in Figure 7, described switching controls module 14 comprises:
Choose unit 14-1, for choosing the top n candidate adjacent that in candidate adjacent corresponding to each candidate UE, signal measurements is maximum, as the to be switched adjacent area of each candidate UE, described N is positive integer and T >=N >=2, and described T is the minimum value in the sum of each self-corresponding candidate adjacent of each candidate UE;
Computing unit 14-2, for calculating candidate UE number corresponding to each to be switched adjacent area;
Determining unit 14-3, for when there is candidate UE corresponding to N number of to be switched adjacent area and be identical and number being 1, described candidate UE is defined as object UE, and chooses the target adjacent area that adjacent area that in described two to be switched adjacent areas, signal measurements is larger is switched to as described object UE;
Described determining unit 14-3, when being also 1 for the candidate UE number corresponding when certain to be switched adjacent area, is defined as object UE by described candidate UE, and described to be switched adjacent area is defined as the target adjacent area that described object UE is switched to;
Described determining unit 14-3, when being also all greater than 1 for the candidate UE number corresponding when each to be switched adjacent area, to be switched adjacent area minimum for the candidate UE number of correspondence is defined as target adjacent area, and from candidate UE corresponding to described target adjacent area random selecting candidate UE as object UE;
Described determining unit 14-3, be also all greater than 1 for the candidate UE number corresponding when each to be switched adjacent area and number is identical time, choose the target adjacent area of the larger to be switched adjacent area of signal measurements corresponding to certain candidate UE as described candidate UE.
Optionally, in LTE system, described signal measurements is Reference Signal Received Power RSRP measured value.
Further, described transmitting element, also for sending the switch indicating information carrying corresponding target neighboring BS information to each object UE described, is switched to corresponding target adjacent area to indicate each object UE described.
Each functional module in said apparatus or the specific implementation of unit see the associated description in the corresponding step of method in embodiment 1, can not repeat them here.
Correspondingly, the embodiment of the present invention also provides a kind of handover control system, comprises above-mentioned switching control and multiple user equipment (UE).
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required common hardware by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in the storage medium that can read, as the floppy disk of computer, hard disk or CD etc., comprise some instructions and perform method described in each embodiment of the present invention in order to make a computer equipment (can be personal computer, server, or the network equipment etc.).
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (9)
1. a method for handover control, is characterized in that, comprising:
Determine multiple candidate user devices UE;
Send handover measurement Indication message to described multiple candidate UE, to trigger described multiple candidate UE, signal measurement is carried out to adjacent area, and report measurement results;
Receive the respective measurement result that described multiple candidate UE reports, described measurement result comprises: one or more candidate adjacent and described candidate adjacent signal measurements separately;
Signal measurements according to described candidate adjacent determines multiple object UE from described multiple candidate UE, and the target adjacent area that described multiple object UE is switched to separately is determined from each self-corresponding candidate adjacent of described multiple object UE, the target adjacent area that described multiple object UE is switched to separately is different;
Wherein, describedly determine that multiple candidate UE comprises:
Receive the signal measurements that each UE sends, described signal measurements is the signal measurements obtained after UE carries out signal measurement to this community, and described signal measurements is less, for represent described UE and this community described base station between distance far away;
UE corresponding for all signal measurements being less than predetermined threshold value is defined as candidate UE.
2. method according to claim 1, it is characterized in that, the described signal measurements according to described candidate adjacent determines multiple object UE from described multiple candidate UE, and determines that the target adjacent area that described multiple object UE is switched to separately comprises from each self-corresponding candidate adjacent of described multiple object UE:
Choose the top n candidate adjacent that in candidate adjacent corresponding to each candidate UE, signal measurements is maximum, as the to be switched adjacent area of each candidate UE, described N is positive integer and T >=N >=2, and described T is the minimum value in the sum of each self-corresponding candidate adjacent of each candidate UE;
Calculate the candidate UE number that each to be switched adjacent area is corresponding;
When the candidate UE that existence two to be switched adjacent areas are corresponding is identical and number is 1, described candidate UE is defined as object UE, and chooses the target adjacent area that adjacent area that in described two to be switched adjacent areas, signal measurements is larger is switched to as described object UE;
When the candidate UE number that certain to be switched adjacent area is corresponding is 1, described candidate UE is defined as object UE, and described to be switched adjacent area is defined as the target adjacent area that described object UE is switched to;
When the candidate UE number that each to be switched adjacent area is corresponding is all greater than 1, to be switched adjacent area minimum for the candidate UE number of correspondence is defined as target adjacent area, and from candidate UE corresponding to described target adjacent area random selecting candidate UE as object UE;
When the candidate UE number that each to be switched adjacent area is corresponding is all greater than 1 and number is identical, choose the target adjacent area of the larger to be switched adjacent area of signal measurements corresponding to certain candidate UE as described candidate UE.
3. method according to claim 1 and 2, is characterized in that, described signal measurements is Reference Signal Received Power RSRP measured value.
4. method according to claim 1 and 2, is characterized in that, also comprises:
Send the switch indicating information carrying corresponding target neighboring BS information to each object UE described, be switched to corresponding target adjacent area to indicate each object UE described.
5. a switching control, is characterized in that, comprising:
Determination module, for determining multiple candidate user devices UE;
Sending module, for sending handover measurement Indication message to described multiple candidate UE, carries out signal measurement to trigger described multiple candidate UE to adjacent area, and report measurement results;
Receiver module, for receiving the respective measurement result that described multiple candidate UE reports, described measurement result comprises: one or more candidate adjacent and described candidate adjacent signal measurements separately;
Switching controls module, from described multiple candidate UE, multiple object UE is determined for the signal measurements according to described candidate adjacent, and the target adjacent area that described multiple object UE is switched to separately is determined from each self-corresponding candidate adjacent of described multiple object UE, the target adjacent area that described multiple object UE is switched to separately is different;
Wherein, described determination module comprises:
Receiving element, for receiving the signal measurements that each UE sends, described signal measurements is the signal measurements obtained after UE carries out signal measurement to this community;
Determining unit, for being defined as candidate UE by UE corresponding for all signal measurements being less than predetermined threshold value.
6. device according to claim 5, is characterized in that, described switching controls module comprises:
Choose unit, for choosing the top n candidate adjacent that in candidate adjacent corresponding to each candidate UE, signal measurements is maximum, as the to be switched adjacent area of each candidate UE, described N is positive integer and T >=N >=2, and described T is the minimum value in the sum of each self-corresponding candidate adjacent of each candidate UE;
Computing unit, for calculating candidate UE number corresponding to each to be switched adjacent area;
Determining unit, for the candidate UE corresponding when existence two to be switched adjacent areas is identical and number is 1 time, described candidate UE is defined as object UE, and chooses the target adjacent area that adjacent area that in described two to be switched adjacent areas, signal measurements is larger is switched to as described object UE;
Described determining unit, when being also 1 for the candidate UE number corresponding when certain to be switched adjacent area, is defined as object UE by described candidate UE, and described to be switched adjacent area is defined as the target adjacent area that described object UE is switched to;
Described determining unit, when being also all greater than 1 for the candidate UE number corresponding when each to be switched adjacent area, to be switched adjacent area minimum for the candidate UE number of correspondence is defined as target adjacent area, and from candidate UE corresponding to described target adjacent area random selecting candidate UE as object UE;
Described determining unit, be also all greater than 1 for the candidate UE number corresponding when each to be switched adjacent area and number is identical time, choose the target adjacent area of the larger to be switched adjacent area of signal measurements corresponding to certain candidate UE as described candidate UE.
7. the device according to claim 5 or 6, is characterized in that, described signal measurements is Reference Signal Received Power RSRP measured value.
8. the device according to claim 5 or 6, is characterized in that,
Described transmitting element, also for sending the switch indicating information carrying corresponding target neighboring BS information to each object UE described, is switched to corresponding target adjacent area to indicate each object UE described.
9. a handover control system, is characterized in that, comprises the switching control described in any one of the claims 5-8 and multiple user equipment (UE).
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| US11277779B2 (en) | 2014-01-28 | 2022-03-15 | Samsung Electronics Co., Ltd. | Method and apparatus for applying resources in heterogeneous network system |
| KR102175177B1 (en) | 2014-01-28 | 2020-11-06 | 삼성전자주식회사 | Method and apparatus for resource allocation in a heterogeneous network system |
| CN112534867A (en) * | 2018-08-14 | 2021-03-19 | 瑞典爱立信有限公司 | Method and apparatus for handover at network slice coverage boundaries |
| CN109246784B (en) * | 2018-11-02 | 2021-03-26 | 新华三技术有限公司 | Roaming control method and device |
| CN113891406B (en) * | 2020-07-03 | 2024-04-09 | 中国移动通信集团设计院有限公司 | Cell switching method and device in multi-frequency network |
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