CN103379574A - Switching control method, device and system - Google Patents
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Abstract
The invention provides a switching control method, device and system and relates to a communication technology field. The method comprises the steps of determining a plurality of pieces of candidate user equipment UE; sending switching and measuring indication information to the candidate UE; receiving the measurement results submitted by the candidate UE, wherein each measurement result comprises one or more candidate adjacent regions and signal measurement values of the candidate adjacent regions; determining a plurality of pieces of target UE from the candidate UE according to the signal measurement values of the candidate adjacent regions and determining target adjacent regions to which the target UE is switched from the candidate adjacent regions corresponding to the target UE, wherein the target adjacent regions to which the target UE is switched are different from each other. According to the switching control method, device and system, the congestion degree of the cell can be effectively reduced and the success rate of switching is improved.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method for handover control, Apparatus and system.
Background technology
UMTS (Universal Mobile Telecom System) wireless communication system is disposed in worldwide widely.For faster more substantial communication is provided, telecom industry servers are being developed existing network.For example, the UMTS system is further developed into so-called evolution UMTS Terrestrial radio access network network, is also referred to as LTE wireless communication system or 3.9G system.This system reduces cost by raising the efficiency, and the exploitation service utilizes new spectrum opportunities, better with upgrade early technology of the means such as other standard is integrated.
In LTE, the framework of Radio Network System is from not only support circuit-switched but also support packet switching to develop into the system of a pure IP, pure packet switching.The framework of whole eUTRAN (evolved UMTS Terrestrial Radio Access Network) and its core network become simpler, the two combines formation EPS (Evolved Packet System), is called again SAE (System Architecture Evolution).
In current LTE, basic framework comprises a Radio Access Network (eUTRAN), and it connects a plurality of UE (User Equipment, subscriber equipment) and a plurality of access node as a base station, and is simultaneously mutual with core net.Access node is called as eNode B or eNB in eUTRAN.ENB is unique node type in eUTRAN, and it has simplified framework cordless communication network relatively before.The core net that eNB connects in LTE is called EPC (Evolved Packet Core).
In the EPS that is formed by eUTRAN and EPC, there is the restriction on the certain operations, comprise physical restriction, such as device-restrictive, frequency is distributed, Power Limitation, settle the base station, antenna configuration, noise, environmental factor etc.In addition, these operational restrictions also may derive from the irrational configuration of system.The based mobile communication equipment supplier can provide RRM (RRM, Radio Resource Management) characteristic in the equipment of supplying.This radio management characteristic can be regulated and be alleviated the excessive and congestion problems that causes of factor data amount, signaling amount and number of users among the EPS.Congested among the EPS comprises two aspects: the one, eUTRAN wireless access mesh portions congested, the 2nd, EPC core net part congested.In the wireless access mesh portions, because too much user and service access are to same eNB in the same residential quarter, competition takies the limited resource that this eNodeB has, thereby causes PRB (the Physical Resource Block) shortage this residential quarter in and can't guarantee the QoS (Quality of Service) of business.
In the prior art, congested in the residential quarter, a kind of method commonly used is: the base station in the cell-of-origin judges whether the signal power that UE is sent to base station in this cell-of-origin is lower than a certain threshold value, the signal power of base station is lower than a certain threshold value in the cell-of-origin if UE is sent to, then UE is switched to Target cell, reaching the load that reduces the cell-of-origin, and then reduce the purpose of the Congestion Level SPCC of cell-of-origin.Yet, adopting the method, the signal power of base station is not lower than threshold value in the cell-of-origin if UE is sent to, even described cell-of-origin is under the congestion state, also UE can't be switched to Target cell, thereby also just can't reduce the load of cell-of-origin, can't reduce the Congestion Level SPCC of cell-of-origin.
Another kind of method commonly used is: carry out the load information exchange between the base station, select UE to switch by load balancing.Yet, adopt the method to need to possess the load information Fabric Interface between the base station, for the system that lacks load information Fabric Interface between the base station, this method is also inapplicable.If still adopt the method, then can cause in handoff procedure, the cell-of-origin might switch to same adjacent area with a plurality of UE, cause the load of this adjacent area to increase suddenly, so that part UE handoff failure, the success rate of switching is lower, and then also can't 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, can effectively reduce the Congestion Level SPCC of residential quarter, and improve the success rate of switching.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of method for handover control comprises:
Determine a plurality of candidate user devices UE;
Send the handover measurement Indication message to described a plurality of candidate UE, to trigger described a plurality of candidate UE signal measurement is carried out in the adjacent area, and the reporting measurement result;
Receive the measurement result separately that described a plurality of candidate UE reports, comprise in the described measurement result: one or more candidate adjacent and described candidate adjacent signal measurements separately;
Signal measurements according to described candidate adjacent is determined a plurality of object UE from described a plurality of candidate UE, and from each self-corresponding candidate adjacent of described a plurality of object UE, determine the target adjacent area that described a plurality of object UE switch to separately, the target adjacent area that described a plurality of object UE switch to separately is different.
A kind of switching control comprises:
Determination module is used for determining a plurality of candidate user devices UE;
Sending module is used for sending the handover measurement Indication message to described a plurality of candidate UE, to trigger described a plurality of candidate UE signal measurement is carried out in the adjacent area, and the reporting measurement result;
Receiver module is used for receiving the measurement result separately that described a plurality of candidate UE reports, and comprises in the described measurement result: one or more candidate adjacent and described candidate adjacent signal measurements separately;
The switching controls module, be used for determining a plurality of object UE according to the signal measurements of described candidate adjacent from described a plurality of candidate UE, and from each self-corresponding candidate adjacent of described a plurality of object UE, determine the target adjacent area that described a plurality of object UE switch to separately, the target adjacent area that described a plurality of object UE switch to separately is different.
A kind of handover control system comprises above-mentioned switching control and a plurality of user equipment (UE).
In the described embodiment of the invention of technique scheme, the base station of this residential quarter is when carrying out the residential quarter switching controls to the UE in this residential quarter, a plurality of object UE are determined according to the signal measurements of the candidate adjacent that candidate UE reports in the base station of this residential quarter from described a plurality of candidate UE, and from each self-corresponding candidate adjacent of described a plurality of object UE, determine the target adjacent area that described a plurality of object UE switch to separately, the target adjacent area that described a plurality of object UE switch to separately is different.Because the target adjacent area that switches to separately that the base station of this residential quarter is a plurality of object UE to be selected is different, thereby avoided in the prior art UE in this residential quarter can being switched to same adjacent area and cause the load of this adjacent area to increase suddenly, cause part UE handoff failure, can't effectively reduce the problem of this small area jam degree.
Compared with prior art, when technical scheme provided by the invention is in congestion state in the residential quarter, can effectively reduce the Congestion Level SPCC of residential quarter, and improve the success rate of switching; When not being in congestion state in the residential quarter, also can carry out switching controls to the UE in the residential quarter, enter congestion state with the prevention residential quarter.
And technical scheme provided by the invention does not need to possess the load information Fabric Interface between the base station, thereby, for the communication system that lacks load information Fabric Interface between the base station, for example, based on the communication system of X2 interface information interaction, also can be suitable for.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 provides a kind of flow chart of method for handover control for the embodiment of the 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 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 invention 1;
The flow chart of the another kind of method for handover control that Fig. 4 provides for the embodiment of the invention 1;
Fig. 5 provides a kind of structure chart of switching control for the embodiment of the invention 2;
Fig. 6 provides the structure chart of determination module 11 in a kind of switching control for the embodiment of the invention 2;
Fig. 7 provides the structure chart of switching controls module 14 in a kind of switching control for the embodiment of the invention 2.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Embodiment 1:
The embodiment of the 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 the residential quarter, and this base station includes but not limited to the Node B in eNode B in the LTE system or eNB, the cdma system.The method comprises:
101, determine a plurality of candidate user devices UE.
For example, a plurality of candidate UE are determined in the base station of this residential quarter from each UE of this residential quarter.
102, send the handover measurement Indication message to described a plurality of candidate UE, to trigger described a plurality of candidate UE signal measurement is carried out in the adjacent area, and the reporting measurement result.
103, receive the measurement result separately that described a plurality of candidate UE report, comprise in the described measurement result: one or more candidate adjacent and described candidate adjacent signal measurements separately.
Need to prove, in order to reduce handoff delay, in step 102, when the base station of this residential quarter sends the handover measurement Indication message, can set a timer.When reaching the time that this timer sets, when the base station of this residential quarter does not receive the measurement result of certain candidate UE yet, then think this candidate UE around do not have suitable candidate cell.
104, from described a plurality of candidate UE, determine a plurality of object UE according to the signal measurements of described candidate adjacent, and from each self-corresponding candidate adjacent of described a plurality of object UE, determine the target adjacent area that described a plurality of object UE switch to separately, the target adjacent area that described a plurality of object UE switch to separately is different.
In the described embodiment of the invention of technique scheme, the base station of this residential quarter is when carrying out the residential quarter switching controls to the UE in this residential quarter, a plurality of object UE are determined according to the signal measurements of the candidate adjacent that candidate UE reports in the base station of this residential quarter from described a plurality of candidate UE, and from each self-corresponding candidate adjacent of described a plurality of object UE, determine the target adjacent area that described a plurality of object UE switch to separately, the target adjacent area that described a plurality of object UE switch to separately is different.Because the target adjacent area that switches to separately that the base station of this residential quarter is a plurality of object UE to be selected is different, thereby avoided in the prior art UE in this residential quarter can being switched to same adjacent area and cause the load of this adjacent area to increase suddenly, cause part UE handoff failure, can't effectively reduce the problem of this small area jam degree.
Compared with prior art, when technical scheme provided by the invention is in congestion state in the residential quarter, can effectively reduce the Congestion Level SPCC of residential quarter, and improve the success rate of switching; When not being in congestion state in the residential quarter, also can carry out switching controls to the UE in the residential quarter, enter congestion state with the prevention residential quarter.
And technical scheme provided by the invention does not need to possess the load information Fabric Interface between the base station, thereby, for the communication system that lacks load information Fabric Interface between the base station, for example, based on the communication system of X2 interface information interaction, also can be suitable for.
Need to prove that the scheme that the embodiment of the invention provides can be adapted to but be not limited to hereinafter as an example of the LTE system example said method is elaborated in the LTE system.
Further, as shown in Figure 2, in the above-mentioned steps 101, determine that a plurality of candidate user devices UE can realize in the following way:
101-1, receive the signal measurements that each UE sends, to be UE carry out the signal measurements that obtains behind the signal measurement to this residential quarter to described signal measurements, and described signal measurements is less, is used for representing that the distance between the base station of described UE and described this residential quarter is far away;
Optionally, in the LTE system, to be UE carry out the RSRP measured value that obtains after RSRP (LTEReference Signal Received Power, Reference Signal Received Power) measures to this residential quarter to described signal measurements.The linear average of the signal power that this RSRP measured value obtains after to be UE to the RS (Reference Signal, reference signal) from some REs (Resource Element) of base station measure.
When UE was nearer apart from the base station of residential quarter, the RSRP measured value of this residential quarter that this UE records was just larger, otherwise when UE was far away apart from the base station of residential quarter, the RSRP measured value of this residential quarter that this UE records was just less.Thereby, by the size of this RSRP measured value relatively, can learn the distance of distance between UE and the residential quarter.
101-2, will be defined as candidate UE less than UE corresponding to all signal measurements of predetermined threshold value.
Wherein, less than UE corresponding to all signal measurements of predetermined threshold value, refer to be positioned at the UE of this cell edge.Because UE is when being positioned at this cell edge, the success rate that switches to other adjacent areas is higher, thereby, this paper choose be positioned at this cell edge UE as candidate UE, can improve the success rate of switching.
Particularly, can with after arranging from small to large according to the RSRP measured value less than UE corresponding to all RSRP measured values of predetermined threshold value, be kept in the handoff list.Afterwards, in step 102, the base station of this residential quarter can be selected to send the handover measurement Indication message to all candidate UE that are kept in this handoff list.
Further, in the above-mentioned steps 102, the RRCConnectionReconfiguration transmitting signaling downwards can be passed through to the handover measurement Indication message that described a plurality of candidate UE send in the base station of this residential quarter.When UE carries out the RSRP measurement to the adjacent area after, can adopt preiodic type to report mode or event mode to report mode reporting measurement result.More excellent, when the residential quarter is in congestion state, generally select event mode to report mode.This preiodic type reports mode or event mode to report the specific implementation of mode referring to existing correlation technique, 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 of signal measurements maximum in candidate adjacent corresponding to each candidate UE, to be switched adjacent area as each candidate UE, described N is positive integer and T 〉=N 〉=2, and described T is the minimum value in the sum of each each self-corresponding candidate adjacent of candidate UE.
In order better to understand and to describe the embodiment of the invention, hereinafter describe as 2 o'clock as example take the N value.
For example, in step 103, the base station of this residential quarter receives the measurement result separately that candidate UE1, UE2......UE10 report.
As shown in table 1 below, choose the first two candidate adjacent of signal measurements maximum in each self-corresponding candidate adjacent of candidate UE1, UE2......UE10, as the to be switched adjacent area of each candidate UE.Wherein, the to be switched adjacent area of UE1 is Cell1 and Cell2, and the to be switched adjacent area of 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 corresponding to each candidate UE of above-mentioned table 1 expression can be converted to above-mentioned table 1 candidate UE corresponding to each to be switched adjacent area, and 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, according to the size of the RSRP value of two to be switched adjacent areas corresponding to different and each candidate UE of candidate UE number corresponding to each to be switched adjacent area, can specifically be divided into following several situation and process:
(1) when existing the identical and number of candidate UE corresponding to two to be switched adjacent areas to be 1, described candidate UE is defined as object UE, and chooses the target adjacent area that signal measurements is larger in described two to be switched adjacent areas adjacent area switches to as described object UE.
(2) when candidate UE number corresponding to certain to be switched adjacent area 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 switches to.
(3) when a candidate UE number average corresponding to each to be switched adjacent area greater than 1 the time, the to be switched adjacent area that the candidate UE number of correspondence is minimum is defined as the target adjacent area, and chooses at random a candidate UE as object UE from candidate UE corresponding to described target adjacent area.
For example, in above-mentioned table 2, the number of the candidate UE that Cell5 is corresponding is minimum, then selects at random a candidate UE from candidate UE corresponding to Cell5, for example, chooses UE5.Afterwards, the number of the candidate UE that Cell1 and Cell6 are corresponding is identical, then chooses object UE at random from candidate UE corresponding to Cell1 or Cell6, for example, chooses UE1 in candidate UE corresponding to Cell1.The result is as shown in table 3 below.Wherein, this is defined as on the candidate UE mark of object UE to colluding, so that distinguish with candidate UE.
Table 3
| To be switched adjacent area | Corresponding candidate UE | The object UE of determining 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 |
On the basis of above-mentioned table 3, again similarly process, obtain such as following table 4.Wherein, this is defined as on the candidate UE mark of object UE " √ ", will last time be defined as on the candidate UE mark of object UE " * ", so that distinguish with candidate UE.
Table 4
| To be switched adjacent area | Corresponding candidate UE | The object UE of determining 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 a candidate UE number average corresponding to each to be switched adjacent area greater than 1 and number when identical, choose the larger to be switched adjacent area of signal measurements corresponding to certain candidate UE as the target adjacent area of described candidate UE.
For example, in the above-mentioned table 4, to be switched adjacent area is Cell3 and Cell4, and the candidate UE number of Cell3 and the various correspondences of Cell4 is 3, according to table 1 as can be known, the RSRP measured value of Cell4 is larger in candidate adjacent corresponding to candidate UE4, thereby the target adjacent area of selecting UE4 to switch to is Cell4.The result who finally obtains is shown in the following table 5.
Table 5
| To be switched adjacent area | Corresponding candidate UE | The object UE of determining 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 that carries corresponding target neighboring BS information to described each object UE, switch to corresponding target adjacent area to indicate described each object UE.
For example, shown in above-mentioned table 5, the base station of this residential quarter sends the switch indicating information that carries Cell1 information to UE1, switches to Cell1 to indicate described UE1; The base station of this residential quarter sends the switch indicating information carry Cell2 information to UE2, switches to Cell2...... to indicate described UE2.
As seen, because the target adjacent area that each UE switches to is all not identical, verified that again technical scheme provided by the invention avoided in the prior art UE in this residential quarter can being switched to same adjacent area and caused the load of this adjacent area to increase suddenly, cause part UE handoff failure, can't effectively reduce the problem of this small area jam degree, can effectively reduce the Congestion Level SPCC of residential quarter, and improve the success rate of switching.
Embodiment 2:
As shown in Figure 5, the embodiment of the invention provides a kind of switching control, and this device is specially the base station in the residential quarter, and this device comprises:
Sending module 12 is used for sending the handover measurement Indication message to described a plurality of candidate UE, to trigger described a plurality of candidate UE signal measurement is carried out in the adjacent area, and the reporting measurement result;
In the embodiment of the invention, the base station of this residential quarter is when carrying out the residential quarter switching controls to the UE in this residential quarter, a plurality of object UE are determined according to the signal measurements of the candidate adjacent that candidate UE reports in the base station of this residential quarter from described a plurality of candidate UE, and from each self-corresponding candidate adjacent of described a plurality of object UE, determine the target adjacent area that described a plurality of object UE switch to separately, the target adjacent area that described a plurality of object UE switch to separately is different.Because the target adjacent area that switches to separately that the base station of this residential quarter is a plurality of object UE to be selected is different, thereby avoided in the prior art UE in this residential quarter can being switched to same adjacent area and cause the load of this adjacent area to increase suddenly, cause part UE handoff failure, can't effectively reduce the problem of this small area jam degree.
Compared with prior art, when technical scheme provided by the invention is in congestion state in the residential quarter, can effectively reduce the Congestion Level SPCC of residential quarter, and improve the success rate of switching; When not being in congestion state in the residential quarter, also can carry out switching controls to the UE in the residential quarter, enter congestion state with the prevention residential quarter.
And technical scheme provided by the invention does not need to possess the load information Fabric Interface between the base station, thereby, for the communication system that lacks load information Fabric Interface between the base station, for example, based on the communication system of X2 interface information interaction, also can be suitable for.
Further, as shown in Figure 6, described determination module 11 comprises:
Receiving element 11-1 be used for to receive the signal measurements that each UE sends, and described signal measurements is that UE carries out the signal measurements that obtains behind the signal measurement to this residential quarter;
Determining unit 11-2 is used for and will be defined as candidate UE less than UE corresponding to all signal measurements of predetermined threshold value.
Further, as shown in Figure 7, described switching controls module 14 comprises:
Choose unit 14-1, be used for choosing the top n candidate adjacent of candidate adjacent signal measurements maximum corresponding to each candidate UE, to be switched adjacent area as each candidate UE, described N is positive integer and T 〉=N 〉=2, and described T is the minimum value in the sum of each each self-corresponding candidate adjacent of candidate UE;
Computing unit 14-2 is used for calculating candidate UE number corresponding to each to be switched adjacent area;
Determining unit 14-3, be used for when existing the identical and number of candidate UE corresponding to the individual to be switched adjacent area of N to be 1, described candidate UE is defined as object UE, and chooses the target adjacent area that signal measurements is larger in described two to be switched adjacent areas adjacent area switches to as described object UE;
Described determining unit 14-3 also is used for described candidate UE being defined as object UE, and described to be switched adjacent area being defined as the target adjacent area that described object UE switches to when candidate UE number corresponding to certain to be switched adjacent area is 1;
Described determining unit 14-3, also be used for when a candidate UE number average corresponding to each to be switched adjacent area greater than 1 the time, the to be switched adjacent area that the candidate UE number of correspondence is minimum is defined as the target adjacent area, and chooses at random a candidate UE as object UE from candidate UE corresponding to described target adjacent area;
Described determining unit 14-3, also be used for when a candidate UE number average corresponding to each to be switched adjacent area greater than 1 and number when identical, choose the larger to be switched adjacent area of signal measurements corresponding to certain candidate UE as the target adjacent area of described candidate UE.
Optionally, in the LTE system, described signal measurements is Reference Signal Received Power RSRP measured value.
Further, described transmitting element also is used for sending the switch indicating information that carries corresponding target neighboring BS information to described each object UE, switches to corresponding target adjacent area to indicate described each object UE.
Each functional module in the said apparatus or the specific implementation of unit can referring to the associated description in the corresponding step of method among the embodiment 1, not repeat them here.
Correspondingly, the embodiment of the invention also provides a kind of handover control system, comprises above-mentioned switching control and a plurality of user equipment (UE).
Through the above description of the embodiments, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential common hardware, can certainly pass through hardware, but the former is better execution mode in a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium that can read, floppy disk such as computer, hard disk or CD etc., comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above; be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, 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 (11)
1. a method for handover control is characterized in that, comprising:
Determine a plurality of candidate user devices UE;
Send the handover measurement Indication message to described a plurality of candidate UE, to trigger described a plurality of candidate UE signal measurement is carried out in the adjacent area, and the reporting measurement result;
Receive the measurement result separately that described a plurality of candidate UE reports, comprise in the described measurement result: one or more candidate adjacent and described candidate adjacent signal measurements separately;
Signal measurements according to described candidate adjacent is determined a plurality of object UE from described a plurality of candidate UE, and from each self-corresponding candidate adjacent of described a plurality of object UE, determine the target adjacent area that described a plurality of object UE switch to separately, the target adjacent area that described a plurality of object UE switch to separately is different.
2. method according to claim 1 is characterized in that, described definite a plurality of candidate UE comprise:
Receive the signal measurements that each UE sends, to be UE carry out the signal measurements that obtains behind the signal measurement to this residential quarter to described signal measurements, and described signal measurements is less, is used for representing that the distance between the base station of described UE and described this residential quarter is far away;
To be defined as candidate UE less than UE corresponding to all signal measurements of predetermined threshold value.
3. method according to claim 2, it is characterized in that, described signal measurements according to described candidate adjacent is determined a plurality of object UE from described a plurality of candidate UE, and determines that from each self-corresponding candidate adjacent of described a plurality of object UE the target adjacent area that described a plurality of object UE switch to separately comprises:
Choose the top n candidate adjacent of signal measurements maximum in candidate adjacent corresponding to each candidate UE, to be switched adjacent area as each candidate UE, described N is positive integer and T 〉=N 〉=2, and described T is the minimum value in the sum of each each self-corresponding candidate adjacent of candidate UE;
Calculate candidate UE number corresponding to each to be switched adjacent area;
When existing the identical and number of candidate UE corresponding to N to be switched adjacent area to be 1, described candidate UE is defined as object UE, and chooses the target adjacent area that signal measurements is larger in described two to be switched adjacent areas adjacent area switches to as described object UE;
When candidate UE number corresponding to certain to be switched adjacent area 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 switches to;
When a candidate UE number average corresponding to each to be switched adjacent area greater than 1 the time, the to be switched adjacent area that the candidate UE number of correspondence is minimum is defined as the target adjacent area, and chooses at random a candidate UE as object UE from candidate UE corresponding to described target adjacent area;
When a candidate UE number average corresponding to each to be switched adjacent area greater than 1 and number when identical, choose the larger to be switched adjacent area of signal measurements corresponding to certain candidate UE as the target adjacent area of described candidate UE.
4. each described method is characterized in that according to claim 1-3, and described signal measurements is Reference Signal Received Power RSRP measured value.
5. each described method is characterized in that according to claim 1-3, also comprises:
Send the switch indicating information that carries corresponding target neighboring BS information to described each object UE, switch to corresponding target adjacent area to indicate described each object UE.
6. a switching control is characterized in that, comprising:
Determination module is used for determining a plurality of candidate user devices UE;
Sending module is used for sending the handover measurement Indication message to described a plurality of candidate UE, to trigger described a plurality of candidate UE signal measurement is carried out in the adjacent area, and the reporting measurement result;
Receiver module is used for receiving the measurement result separately that described a plurality of candidate UE reports, and comprises in the described measurement result: one or more candidate adjacent and described candidate adjacent signal measurements separately;
The switching controls module, be used for determining a plurality of object UE according to the signal measurements of described candidate adjacent from described a plurality of candidate UE, and from each self-corresponding candidate adjacent of described a plurality of object UE, determine the target adjacent area that described a plurality of object UE switch to separately, the target adjacent area that described a plurality of object UE switch to separately is different.
7. device according to claim 6 is characterized in that, described determination module comprises:
Receiving element be used for to receive the signal measurements that each UE sends, and described signal measurements is that UE carries out the signal measurements that obtains behind the signal measurement to this residential quarter;
Determining unit is used for and will be defined as candidate UE less than UE corresponding to all signal measurements of predetermined threshold value.
8. device according to claim 6 is characterized in that, described switching controls module comprises:
Choose the unit, be used for choosing the top n candidate adjacent of candidate adjacent signal measurements maximum corresponding to each candidate UE, 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 each self-corresponding candidate adjacent of candidate UE;
Computing unit is used for calculating candidate UE number corresponding to each to be switched adjacent area;
Determining unit, be used for when existing the identical and number of candidate UE corresponding to the individual to be switched adjacent area of N to be 1, described candidate UE is defined as object UE, and chooses the target adjacent area that signal measurements is larger in described two to be switched adjacent areas adjacent area switches to as described object UE;
Described determining unit also is used for described candidate UE being defined as object UE, and described to be switched adjacent area being defined as the target adjacent area that described object UE switches to when candidate UE number corresponding to certain to be switched adjacent area is 1;
Described determining unit, also be used for when a candidate UE number average corresponding to each to be switched adjacent area greater than 1 the time, the to be switched adjacent area that the candidate UE number of correspondence is minimum is defined as the target adjacent area, and chooses at random a candidate UE as object UE from candidate UE corresponding to described target adjacent area;
Described determining unit, also be used for when a candidate UE number average corresponding to each to be switched adjacent area greater than 1 and number when identical, choose the larger to be switched adjacent area of signal measurements corresponding to certain candidate UE as the target adjacent area of described candidate UE.
9. each described device is characterized in that according to claim 5-8, and described signal measurements is Reference Signal Received Power RSRP measured value.
10. each described device is characterized in that according to claim 5-8,
Described transmitting element also is used for sending the switch indicating information that carries corresponding target neighboring BS information to described each object UE, switches to corresponding target adjacent area to indicate described each object UE.
11. a handover control system is characterized in that, comprises each described switching control of the claims 6-10 and a plurality of user equipment (UE).
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Address after: 510663 Shenzhou Road 10, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Patentee after: Jingxin Network System Co.,Ltd. Address before: 510663 Shenzhou Road 10, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Patentee before: COMBA TELECOM SYSTEMS (CHINA) Ltd. |
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