CN106535271A - Switching method and device - Google Patents
Switching method and device Download PDFInfo
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- CN106535271A CN106535271A CN201510578271.XA CN201510578271A CN106535271A CN 106535271 A CN106535271 A CN 106535271A CN 201510578271 A CN201510578271 A CN 201510578271A CN 106535271 A CN106535271 A CN 106535271A
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims description 21
- 230000009466 transformation Effects 0.000 claims description 17
- 230000008859 change Effects 0.000 claims description 8
- 230000011664 signaling Effects 0.000 abstract description 13
- 238000004891 communication Methods 0.000 abstract description 8
- 230000001960 triggered effect Effects 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 description 10
- 230000002093 peripheral effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
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- 230000005540 biological transmission Effects 0.000 description 3
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- 230000006870 function Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/04—Reselecting a cell layer in multi-layered cells
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
- H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/00837—Determination of triggering parameters for hand-off
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Abstract
The invention discloses a switching method and device. The method comprises the steps that measurement information reported by UE is received, wherein the measurement information comprises the reference signal reception quality RSRQ and the reference signal reception power RSRP of X cells; X cells comprise Y cells in the source cell group where the UE is located and Z cells not belonging to the source cell group; whether the cell group needs to be switched for the UE is determined based on the measurement information and a preset switching condition; and when the cell group needs to be switched for the UE, a target cell group is determined for the UE, and the UE is switched from the source cell group to the target cell group. According to the technical scheme, the number of times of UE-triggered switching events is reduced; the signaling overhead of a core network is reduced; and the communication quality of a user is improved.
Description
Technical field
The present invention relates to wireless communication technology, espespecially a kind of switching method and apparatus.
Background technology
In the last few years, wide-band mobile communication technology rapidly developed, and had become socio-economic development institute not
The part that can or lack, becomes the important component part of economic growth.People also become for the dependence of communication
Obtain increasing.For the developing direction of mobile communication, root is it was predicted that arrive the year two thousand twenty, power system capacity
Significantly larger than current network is reached current 1000 times by the data for producing in unit area.Bigger
Capacity is put forward higher requirement for whole network.The method for wherein improving network capacity is exactly original
Cellular network in introduce cell (small cell), i.e., the node that coverage is less, power is lower,
Composition heterogeneous network.However, the introducing of cell also brings some problems simultaneously.Firstly, since little
The power of cell has very big gap with the power of traditional macro base station, there is obvious up-downgoing unbalanced
Problem, i.e., when user equipment (User Equipment, UE) is in specific position, up-downgoing service
The not same base station in best base station, the unbalanced problem of up-downgoing can produce serious interference.Secondly,
With the deployment of heterogeneous network, when a UE is moved in certain panel region, in certain specific cell
Holdup time is reduced, and switching times increase, and handover failure rate increase, pingpang handoff problem are obvious, and
When UE is in high-speed motion, these problems more will be projected.In addition in heterogeneous network, cell will
Disturbed by the macro base station of more power, therefore, easily produce the mistake of hand off signaling；Unit cell
Number increase can not only bring mobility problem, simultaneously because switching is more frequent, can cause core net
Signaling consumption increase.
Dual link (Dual Connectivity) technology just can be solve the unbalanced problem of above-mentioned up-downgoing with
And a kind of method of mobility problem.So-called dual link, refers to that certain UE at least provides nothing by two base stations
Line resource, and be connected with each other via non-ideal backhaul (Non-ideal backhaul) between the two base stations.
As it was noted above, the main cause that the unbalanced problem of up-downgoing is produced is the transmission power difference of two base stations,
Optimal upstream service in unbalanced region and downstream service is caused not to be same base stations.Dual link can
Solve the unbalanced problem of up-downgoing with by realizing upper and lower line splitting (UL/DL split), i.e., it is up by
Cell provides service, while descending provide service by macro base station, so as to solve the unbalanced problem of up-downgoing；
For mobility problem, dual link can realize RRC signaling diversity (RRC diversity), i.e., by grand
Base station and cell send hand off signaling to UE simultaneously, so as to improve the accuracy of signaling reception；For core
The problem that heart net signaling consumption increases, it is in dual link, by the separation of client layer and key-course, i.e., grand
Processing controls information is responsible in base station, and cell is responsible for processing data information so as to the signaling for reducing core net is opened
Pin.
But, based on the technical specification of current existing dual link, when the UE using dual link is multiple little
When moving in cell range, switching that still can frequently between triggering cell, excessive switching can still cause core
In net, the problem of excessive signaling consumption is yet suffered from, simultaneously because the triggering of excessive handover event, can also make
The problem of user communication quality is affected into such as pingpang handoff, call drop etc..
The content of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of switching method and apparatus, can be reduced
UE triggers the number of times of handover event, reduces the signaling consumption of core net, while improving the communication matter of user
Amount.
In order to reach the object of the invention, the invention provides a kind of changing method, methods described includes：
The metrical information that receive user equipment UE is reported, wherein, the metrical information includes X cell
Reference Signal Received Quality RSRQ and Reference Signal Received Power RSRP；In the X cell
It is individual including Y cell in the cell-of-origin group at UE places and the Z for being not belonging to the cell-of-origin group
Cell；
Judge whether to need for the UE switching cells according to the metrical information and default switching condition
Group；
When it is determined that need for the UE switching cells group when, be that the UE determines Target cell group, and will
The UE is switched to the Target cell group from the cell-of-origin group.
Further, the default switching condition includes：RSRQneighbour>RSRQs-max+Δ；Wherein,
RSRQneighbourThe RSRQ of any one cell beyond the cell-of-origin group that the UE is received is represented,
RSRQs-maxThe maximum of the RSRQ of Y cell in the cell-of-origin group that the UE is received is represented,
Δ is switching amount of bias；
Accordingly, it is described to judge whether that needs are according to the cell measurement information and default switching condition
User equipment switching cell group includes：
When the RSRQ of arbitrary cell in the Z cell that the UE is received is received more than the UE
In the cell-of-origin group for arriving the maximum of the RSRQ of Y cell and Δ and when, it is determined that needing for institute
State UE switching cells group；
When the RSRQ of arbitrary cell in the Z cell that the UE is received is less than or equal to described
In the cell-of-origin group that UE is received the maximum of the RSRQ of Y cell and Δ and when, it is determined that
It need not be UE switching cells group.
Further, it is described to determine Target cell group for the UE, including：
The kinematic parameter of the UE is obtained, the kinematic parameter includes：It is the position of the UE, described
The velocity attitude of the speed of UE and the UE；
It is the transformation that the UE configures the cell that little district's groups are included according to the speed of the UE
NmaxL, L represents friction speed grade；
Position, the velocity attitude of the UE according to the UE, the metrical information, NmaxLAnd
Preset algorithm determines the Target cell group for the user equipment, wherein, the Target cell group is medium and small
Area's quantity M≤Z and M≤NmaxL。
Further, before methods described, methods described also includes：
The cell-of-origin group is determined for the UE, specifically include：
The kinematic parameter of the UE is obtained, the kinematic parameter includes：It is the position of the UE, described
The velocity attitude of the speed of UE and the UE；
It is the transformation that the UE configures the cell that little district's groups are included according to the speed of the UE
NmaxL, L represents friction speed grade；
Position, the velocity attitude of the UE according to the UE, the metrical information, NmaxLAnd
Preset algorithm determines the cell-of-origin group for the UE, wherein, Y≤NmaxL。
Further, methods described also includes：
It is after the UE to be switched to the Target cell group, little according to the target of UE measurements
In district's groups the RSRQ of M cell and select the corresponding cells of maximum RSRQ for the UE service.
Further, methods described also includes：
When it is determined that need not be the UE switching cells group, according to Y cell in the cell-of-origin group
RSRQ judge whether to need to switch Serving cell for the UE in the cell-of-origin group；
When the RSRQ in the cell-of-origin group for the cell of UE services is not Y cell
During maximum in RSRQ, the corresponding cell of maximum in the RSRQ of the Y cell is selected to be
The UE services.
The present invention also provides a kind of switching device, including：
Receiving unit, for the metrical information that receive user equipment UE is reported, wherein, the metrical information
Including the Reference Signal Received Quality RSRQ and Reference Signal Received Power RSRP of X cell；Institute
State Y cell and be not belonging to the source that X cell include in the cell-of-origin group that the UE is located
Z cell of little district's groups；
First judging unit, for judging whether needs according to the metrical information and default switching condition
For UE switching cells group；
Processing unit, for when it is determined that need for the UE switching cells group when, be that the UE determines mesh
Little district's groups are marked, and the UE is switched to into the Target cell group from the cell-of-origin group.
Further, the default switching condition includes：RSRQneighbour>RSRQs-max+Δ；Wherein,
RSRQneighbourThe RSRQ of any one cell beyond the cell-of-origin group that the UE is received is represented,
RSRQs-maxThe maximum of the RSRQ of Y cell in the cell-of-origin group that the UE is received is represented,
Δ is switching amount of bias；
Accordingly, first judging unit specifically for：
When the RSRQ of arbitrary cell in the Z cell that the UE is received is received more than the UE
In the cell-of-origin group for arriving the maximum of the RSRQ of Y cell and Δ and when, it is determined that needing for institute
State UE switching cells group；
When the RSRQ of arbitrary cell in the Z cell that the UE is received is less than or equal to described
In the cell-of-origin group that UE is received the maximum of the RSRQ of Y cell and Δ and when, it is determined that
It need not be UE switching cells group.
Further, the processing unit specifically for：
The kinematic parameter of the UE is obtained, the kinematic parameter includes：It is the position of the UE, described
The velocity attitude of the speed of UE and the UE；
It is the transformation that the UE configures the cell that little district's groups are included according to the speed of the UE
NmaxL, L represents friction speed grade；
Position, the velocity attitude of the UE according to the UE, the metrical information, NmaxLAnd
Preset algorithm determines the Target cell group for the user equipment, wherein, the Target cell group is medium and small
Area's quantity M≤Z and M≤NmaxL。
Further, the processing unit is additionally operable to determine the cell-of-origin group for the UE, specifically for：
The kinematic parameter of the UE is obtained, the kinematic parameter includes：It is the position of the UE, described
The velocity attitude of the speed of UE and the UE；
It is the transformation that the UE configures the cell that little district's groups are included according to the speed of the UE
NmaxL, L represents friction speed grade；
Position, the velocity attitude of the UE according to the UE, the metrical information, NmaxLAnd
Preset algorithm determines the cell-of-origin group for the UE, wherein, Y≤NmaxL。
Further, the processing unit is additionally operable to：
It is after the UE to be switched to the Target cell group, little according to the target of UE measurements
In district's groups the RSRQ of M cell and select the corresponding cells of maximum RSRQ for the UE service.
Further, described device also includes：
Second judging unit, for when it is determined that need not be the UE switching cells group, according to the source
In little district's groups, the RSRQ of Y cell judges whether to need to switch in the cell-of-origin group for the UE
Serving cell；
Switch unit, when the RSRQ in the cell-of-origin group for the cell of UE services is not Y
During maximum in the RSRQ of individual cell, maximum in the RSRQ of the Y cell is selected correspondingly
Cell be the UE service.
A kind of switching method and apparatus provided in an embodiment of the present invention, receive the metrical information that UE is reported,
Wherein, the metrical information includes the Reference Signal Received Quality RSRQ and reference signal of X cell
Receiving power RSRP；The X cell includes that the Y in the cell-of-origin group that the UE is located is individual little
Area and it is not belonging to Z cell of the cell-of-origin group；According to the metrical information and default switching bar
Part judges whether to need for UE switching cells group；When it is determined that needing for UE switching cells group
When, it is that the UE determines Target cell group, and the UE is switched to into the mesh from the cell-of-origin group
Mark little district's groups.By above-mentioned technical proposal, the number of times that UE triggers handover event can be reduced, reduce core
The signaling consumption of heart net, while improving the communication quality of user.
Other features and advantages of the present invention will be illustrated in the following description, also, partly from froming the perspective of
Become apparent in bright book, or understood by implementing the present invention.The purpose of the present invention is excellent with other
Point can be realized and be obtained by specifically noted structure in description, claims and accompanying drawing
.
Description of the drawings
Accompanying drawing is used for providing further understanding technical solution of the present invention, and constitutes one of description
Point, together with embodiments herein it is used to explain technical scheme, does not constitute to the present invention
The restriction of technical scheme.
Fig. 1 is the scene framework schematic diagram of the present invention；
Fig. 2 is a kind of schematic flow sheet of changing method provided in an embodiment of the present invention；
Fig. 3 selects the signal of the scale of little district's groups for the speed in the embodiment of the present invention based on UE for UE
Figure；
Fig. 4 is to determine the enforcement schematic diagram of little district's groups in the embodiment of the present invention；
Fig. 5 is a kind of structural representation of switching device provided in an embodiment of the present invention；
Fig. 6 is the schematic flow sheet of embodiment provided in an embodiment of the present invention；
Fig. 7 is the schematic diagram of a scenario of switching cell group in embodiment provided in an embodiment of the present invention two；
Fig. 8 is the schematic flow sheet of embodiment provided in an embodiment of the present invention two.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with accompanying drawing
Embodiments of the invention are described in detail.It should be noted that in the case where not conflicting, this Shen
Please in embodiment and the feature in embodiment can mutual combination in any.
Can be in the computer of such as one group of computer executable instructions the step of the flow process of accompanying drawing is illustrated
Perform in system.And, although show logical order in flow charts, but in some cases,
Can be with the step shown or described by performing different from order herein.
Cell in technical scheme refers both to cell (Small Cell) in the examples below,
But, the cell in technical scheme can be not limited to cell.
Accompanying drawing 1 is the scene framework schematic diagram of the present invention.Technical scheme is used for dual link
Family, under dual link scene, UE and macro base station and at least one little base station (i.e. cell, below
If no special instructions, little base station is equal to slight area) while connection, wherein macro base station are responsible for UE's
The transmission of key-course and data Layer, little base station are merely responsible for transmitting with the data Layer of UE.Wherein, C-Plane
Refer to that control plane, U-Plane refer to user plane.
The embodiment of the present invention provides a kind of changing method, based on macro base station side, as shown in Fig. 2 the method
Including：
The metrical information that step 101, reception UE are reported, wherein, the metrical information includes X cell
RSRQ and RSRP；The X cell includes the Y in the cell-of-origin group that the UE is located
Individual cell and it is not belonging to Z cell of the cell-of-origin group.
Wherein, initialisms of the RSRQ for (Reference Signal Receiving Quality), represents ginseng
Examine signal receiving quality, initialisms of the RSRP for (Reference Signal Receiving Power), table
Show Reference Signal Received Power.
Step 102, judge whether to need for the UE according to the metrical information and default switching condition
Switching cell group.
Further, the default switching condition includes：RSRQneighbour>RSRQs-max+Δ；Wherein,
RSRQneighbourThe RSRQ of any one cell beyond the cell-of-origin group that the UE is received is represented,
RSRQs-maxThe maximum of the RSRQ of Y cell in the cell-of-origin group that the UE is received is represented,
Δ is switching amount of bias；
Further, step 102 can be specifically included：
When the RSRQ of arbitrary cell in the Z cell that the UE is received is received more than the UE
In the cell-of-origin group for arriving the maximum of the RSRQ of Y cell and Δ and when, it is determined that needing for institute
State UE switching cells group；
When the RSRQ of arbitrary cell in the Z cell that the UE is received is less than or equal to described
In the cell-of-origin group that UE is received the maximum of the RSRQ of Y cell and Δ and when, it is determined that
It need not be UE switching cells group.
Step 103, when it is determined that need for the UE switching cells group when, be that the UE determines that target is little
District's groups, and the UE is switched to into the Target cell group from the cell-of-origin group.
Further, in step 103：Target cell group is determined for the UE, can specifically include：
The kinematic parameter of the UE is obtained, the kinematic parameter includes：It is the position of the UE, described
The velocity attitude of the speed of UE and the UE；
It is the transformation that the UE configures the cell that little district's groups are included according to the speed of the UE
NmaxL, L represents friction speed grade；
Position, the velocity attitude of the UE according to the UE, the metrical information, NmaxLAnd
Preset algorithm determines the Target cell group for the user equipment, wherein, the Target cell group is medium and small
Area's quantity M≤Z and M≤NmaxL。
Specifically, as shown in figure 3, being the signal that the speed based on UE is the scale that UE selects little district's groups
Figure.For the UE of friction speed, the little district's groups Zhong little area transformation of respective settings is also different.
It is specific as follows：
case1：Low speed；The user of low-speed motion is less in the switching times of unit interval internal trigger, setting
Higher limit is Nmax1。
case2：Middling speed；The user of middling speed motion may be by the covering of multiple cells within the unit interval
Scope, sets higher limit Nmax2。
case3：At a high speed；The user of high-speed motion can be by the covering model of substantial amounts of cell within the unit interval
Enclose, higher limit is set as Nmax3。
The relation of above three value is Nmax1<Nmax2<Nmax3。
When UE is low speed, its little district's groups Zhong little area transformation is set as minima Nmax1, for example this
When little district's groups in only Nmax1=1 cell, so setting reduce can the range of choice of cell group, because
For low speed UE potentially switch it is fewer.And when UE is middling speed, in its little district's groups Zhong little area quantity
Limit is accordingly increased, and sets its little district's groups Zhong little area transformation as Nmax2, for example, now have in little district's groups
Nmax2=2 cells, it is relative with low speed UE for, middling speed UE is more in the switching that per time instance is produced,
To avoid switching between unit interval excessive group, it is more little to accommodate to select relatively large cell range
Area.When UE is high speed, within the unit interval UE may by the coverage of many cells, therefore
The selection upper limit of little district's groups should further be expanded, and its little district's groups Zhong little area transformation be set as Nmax3,
Such as Fig. 3, for example, now include Nmax3=4 cells.
Accompanying drawing 4 is that example is implemented in cell group selection, to will be into cell S1UE carry out little district's groups choosing
Select.As seen from Figure 4, cell S that user will access1Nearby there are multiple cells, in order to protect
The cell of the next service of card is tried one's best in the group of switching cell, the cell that macro base station is reported according to UE
The velocity attitude of RSRP, UE and position and NmaxLTo determine Target cell group.
Specifically, Target cell group (Small Cell Group, SCG) can determine as follows：
The constraints of above-mentioned formula is：| SCG | ＜ NmaxL；∠SiUV<θL；
It should be noted that argmax (f (x)) is so that f (x) obtains the variable x corresponding to maximum.It is right
In above-mentioned formula, namely each cell included in Target cell group can be causedTake maximum
Value.
Wherein, SiRepresent cell, L represents friction speed grade, L=1,2,3, low speed is corresponded to respectively,
Middling speed, High-speed Circumstance.θ represents cell and UE direction of motion angle maximums, the UE of friction speed
Different maximum angles are selected to limit as the variable probability of the direction of motion is different.As high speed UE is little
Between district's groups in moving process, in the short time, direction of motion change probability is less, moves between the little district's groups of low speed UE
During, in the short time, direction of motion change probability is larger, therefore here setting θ3<θ2<θ1。∠SiUV generations
The each cell of table and UE direction of motion angles.Represent cell S received by UEiSignal intensity,
Required according to user's friction speed, different received signal strength thresholding th can be formulatedL。
Such as Fig. 4, there are 5 cells, S near UE1～S5.Assume that little district's groups maximum number is NmaxL=3,
UV represents the direction of motion of UE, and macro base station can pass through GPS or other location technologies obtain the fortune of UE
Dynamic parameter.∠ AUV and ∠ BUV represents the angle theta maximum of cell and the direction of motion of UE respectively.
In this angular range, optional cell has S1, S2, S3, S5, it is according to RSRP receiving intensities, optional little
There are 3 cells to be respectively S in district's groups1, S2, S3, meet little district's groups maximum number and limit, therefore Target cell
The member of group is S1, S2, S3。
Further, before step 101, methods described also includes：
Step 100, the cell-of-origin group is determined for the UE；Can specifically include：
The kinematic parameter of the UE is obtained, the kinematic parameter includes：It is the position of the UE, described
The velocity attitude of the speed of UE and the UE；
It is the transformation that the UE configures the cell that little district's groups are included according to the speed of the UE
NmaxL, L represents friction speed grade；
Position, the velocity attitude of the UE according to the UE, the metrical information, NmaxLAnd
Preset algorithm determines the cell-of-origin group for the UE, wherein, Y≤NmaxL。
It should be noted that step 100 implements process with reference to illustrating in step 103,
Will not be described here.
Further, after step 103, methods described can also include：
Step 104, after the UE to be switched to the Target cell group, according to the UE measurement
The RSRQ of M cell the corresponding cells of maximum RSRQ are selected for described in the Target cell group
UE is serviced.
Further, methods described can also include：
Step 105, when it is determined that need not for the UE switching cells group when, according in the cell-of-origin group
The RSRQ of Y cell judges whether to need to switch Serving cell for the UE in the cell-of-origin group；
Step 106, when the RSRQ of cell in the cell-of-origin group for UE services be not Y
During maximum in the RSRQ of individual cell, maximum in the RSRQ of the Y cell is selected correspondingly
Cell be the UE service.
It should be noted that in technical scheme provided in an embodiment of the present invention, when UE is in multiple cells
When moving in the coverage of the little district's groups of composition, the selection of the Serving cell inside little district's groups is by grand
Base station is selected by the metrical information that UE is reported, and does not trigger handover event, and switching is to be with little district's groups
What unit was carried out；And handover event can be just triggered when UE moves to little district's groups edge and another is switched to
Little district's groups.
A kind of changing method provided in an embodiment of the present invention, receives the metrical information that UE is reported, wherein, institute
Stating metrical information includes the Reference Signal Received Quality RSRQ and Reference Signal Received Power of X cell
RSRP；The X cell includes Y cell in the cell-of-origin group that the UE is located and does not belong to
In Z cell of the cell-of-origin group；Judged whether according to the metrical information and default switching condition
Need for UE switching cells group；When it is determined that need for the UE switching cells group when, be described
UE determines Target cell group, and the UE is switched to the Target cell group from the cell-of-origin group.
By above-mentioned technical proposal, the number of times that UE triggers handover event can be reduced, the signaling for reducing core net is opened
Pin, while improving the communication quality of user.
The embodiment of the present invention provides a kind of switching device 10, and the switching device 10 can be arranged in macro base station,
As shown in figure 5, the switching device 10 includes：
Receiving unit 11, for receiving the metrical information that UE is reported, wherein, the metrical information includes
The Reference Signal Received Quality RSRQ and Reference Signal Received Power RSRP of X cell；The X
Individual cell includes Y cell in the cell-of-origin group that the UE is located and is not belonging to the cell-of-origin
Z cell of group；
First judging unit 12, for judging whether need according to the metrical information and default switching condition
It to be UE switching cells group；
Processing unit 13, for when it is determined that need for the UE switching cells group when, be that the UE is true
Set the goal little district's groups, and the UE is switched to the Target cell group from the cell-of-origin group.
Further, the default switching condition includes：RSRQneighbour>RSRQs-max+Δ；Wherein,
RSRQneighbourThe RSRQ of any one cell beyond the cell-of-origin group that the UE is received is represented,
RSRQs-maxThe maximum of the RSRQ of Y cell in the cell-of-origin group that the UE is received is represented,
Δ is switching amount of bias；
Accordingly, first judging unit 12 specifically for：
When the RSRQ of arbitrary cell in the Z cell that the UE is received is received more than the UE
In the cell-of-origin group for arriving the maximum of the RSRQ of Y cell and Δ and when, it is determined that needing for institute
State UE switching cells group；
When the RSRQ of arbitrary cell in the Z cell that the UE is received is less than or equal to described
In the cell-of-origin group that UE is received the maximum of the RSRQ of Y cell and Δ and when, it is determined that
It need not be UE switching cells group.
Further, the processing unit 13 specifically for：
The kinematic parameter of the UE is obtained, the kinematic parameter includes：It is the position of the UE, described
The velocity attitude of the speed of UE and the UE；
It is the transformation that the UE configures the cell that little district's groups are included according to the speed of the UE
NmaxL, L represents friction speed grade；
Position, the velocity attitude of the UE according to the UE, the metrical information, NmaxLAnd
Preset algorithm determines the Target cell group for the user equipment, wherein, the Target cell group is medium and small
Area's quantity M≤Z and M≤NmaxL。
Further, the processing unit 13 is additionally operable to determine the cell-of-origin group for the UE, specifically
For：
The kinematic parameter of the UE is obtained, the kinematic parameter includes：It is the position of the UE, described
The velocity attitude of the speed of UE and the UE；
It is the transformation that the UE configures the cell that little district's groups are included according to the speed of the UE
NmaxL, L represents friction speed grade；
Position, the velocity attitude of the UE according to the UE, the metrical information, NmaxLAnd
Preset algorithm determines the cell-of-origin group for the UE, wherein, Y≤NmaxL。
Further, the processing unit 13 is additionally operable to：
It is after the UE to be switched to the Target cell group, little according to the target of UE measurements
In district's groups the RSRQ of M cell and select the corresponding cells of maximum RSRQ for the UE service.
Further, as shown in figure 5, described device 10 can also also include：
Second judging unit 14, for when it is determined that need not be the UE switching cells group, according to institute
The RSRQ for stating Y cell in the group of cell-of-origin judges whether to need to be the UE in the cell-of-origin group
Switching Serving cell；
Switch unit 15, when in the cell-of-origin group for the UE service cell RSRQ not
Be Y cell RSRQ in maximum when, select the maximum in the RSRQ of the Y cell
Corresponding cell is serviced for the UE.
It should be noted that device embodiment described above is only schematic, for example it is, above-mentioned
Receiving unit 11, the first judging unit 12 in device embodiment, processing unit 13, the second judging unit
14th, the division of 15 these units of switch unit, only a kind of division of logic function can when actually realizing
To there is other dividing mode.Another, the connection each other of shown or discussed module can be
By some interfaces, can be electrical, mechanical or other forms.The unit can be or
May not be physically separate, can be or may not be physical location.Can be according to reality
Need select some or all of unit therein to realize the purpose of this embodiment scheme.
In addition, each functional module in each embodiment of the invention can be integrated in a processing module,
Such as the first judging unit 12, processing unit 13, the second judging unit 14, switch unit 15 can collect
In Cheng Yi processing module, or the independent physics of modules includes, it is also possible to two or two
It is integrated in a module with upper module, for example receiving unit 11 can be integrated in the transceiver module of base station,
First judging unit 12, processing unit 13, the second judging unit 14 and switch unit 15 can be with integrated
In the processing module of base station.Above-mentioned integrated module both can be realized in the form of hardware, it is also possible to
Realized in the form of hardware plus software function module.For example, transceiver of the receiving unit 11 by base station
To realize, the first judging unit 12, processing unit 13, the second judging unit 14 and switch unit 15
Realized by the executable instruction of the processor and processor of base station, the executable instruction of processor can
To be stored in a computer read/write memory medium.Above-mentioned instruction is stored in a storage medium,
Use including some instructions so that computer equipment (can be personal computer, server, or
Network equipment etc.) perform the part steps of each embodiment methods described of the invention.And aforesaid storage is situated between
Matter includes：It is USB flash disk, portable hard drive, read only memory (Read-Only Memory, ROM), random
Access memorizer (Random Access Memory, RAM), magnetic disc or CD etc. are various can be deposited
The medium of storage program code.
The present embodiment be used for realize above-mentioned each method embodiment, the workflow of unit in the present embodiment
With operation principle referring to the description in above-mentioned each method embodiment, will not be described here.
A kind of switching device provided in an embodiment of the present invention, receives the metrical information that UE is reported, wherein, institute
Stating metrical information includes the Reference Signal Received Quality RSRQ and Reference Signal Received Power of X cell
RSRP；The X cell includes Y cell in the cell-of-origin group that the UE is located and does not belong to
In Z cell of the cell-of-origin group；Judged whether according to the metrical information and default switching condition
Need for UE switching cells group；When it is determined that need for the UE switching cells group when, be described
UE determines Target cell group, and the UE is switched to the Target cell group from the cell-of-origin group.
By above-mentioned technical proposal, the number of times that UE triggers handover event can be reduced, the signaling for reducing core net is opened
Pin, while improving the communication quality of user.
In order that those skilled in the art can be more clearly understood that the technical scheme of present invention offer, below
By specific embodiment, the technical scheme that the present invention is provided is described in detail：
Embodiment one
Fig. 6 is the overall flow schematic diagram of embodiment one, is comprised the steps：
Step S401：Flow process starts；
Step S402：UE measurements peripheral cell obtains metrical information, and metrical information includes peripheral cell
RSRQ and RSRP, and metrical information is reported into macro base station；
Step S403：The RSRQ of the peripheral cell that macro base station is reported according to UE decides whether that needs are carried out
Little district's groups switch, and switching condition is：
RSRQneighbour>RSRQs-max+Δ
Step S404 is proceeded to then if necessary to switching, it is not necessary to which switching then goes to step S406；
Step S404：When needing to carry out little district's groups switching, kinematic parameter of the macro base station according to the UE for obtaining
And the RSRP of peripheral cell that UE is reported is the little district's groups of UE selected targets, and notify Target cell group
With cell-of-origin group, redistributing for resource is carried out；
Step S405：Macro base station selects little with highest RSRQ in selected Target cell group
Area, is that UE is serviced；
Step S406：Under conditions of it need not switch over, judge that the Serving cell in the group of cell-of-origin is
It is no to need to change, need change then to go to step S407, it is not necessary to then to go to step S402；
Step S407：When needing to change the Serving cell in the group of cell-of-origin, by macro base station in the group of cell-of-origin
Select the cell with highest RSRQ and notify the cell, complete the transmission of data.
Embodiment two
In the present embodiment, the technical side of present invention offer is provided so that UE needs switching cell group as an example
Case, is the schematic diagram of a scenario of switching cell group in the present embodiment shown in Fig. 7, wherein, UE moving directions are such as
Shown in arrow.UE first have selected cell 1,2,3 as cell-of-origin group.When UE moves to cell 3
During edge, switching condition is triggered, metrical information that macro base station is reported according to UE and the UE's of acquisition
Kinematic parameter, selectes cell 3,4,5 as Target cell group.
Accompanying drawing 8 is the overall flow schematic diagram of embodiment two, is comprised the steps：
Step S601：UE measurements peripheral cell obtains metrical information, and metrical information includes peripheral cell
RSRQ and RSRP；
It should be noted that during the peripheral cell of UE measurements can be specifically the cell-of-origin group that UE is located
Several cells beyond each cell and cell-of-origin group.
Step S602：The metrical information that previous step is obtained is reported into macro base station；
Step S603：Macro base station switches over judgement, such as needs switching, then the motion according to the UE for obtaining
The RSRP of the peripheral cell that parameter and UE are reported chooses Target cell group for UE；
It is exemplary, the metrical information of the peripheral cell that macro base station is reported according to UE and default switching condition
Judgement is switched over to judge whether to need as UE switching cells group；
The default switching condition includes：RSRQneighbour>RSRQs-max+Δ；Wherein, RSRQneighbour
Represent that any one beyond the cell-of-origin group (i.e. cell 1,2 and 3) that the UE is received is little
The RSRQ, RSRQ in area's (can for example be cell 4 or 5)s-maxRepresent that the UE is received described
The maximum in RSRQ in the group of cell-of-origin, Δ are switching amount of bias；
It is assumed that the RSRQ of the cell 4 received as the UE is more than the source that the UE is received
In little district's groups the maximum (hypothesis is the RSRQ of cell 3) of the RSRQ of 3 cells and Δ and when,
Then macro base station determines and needs for UE switching cells group；
Further, macro base station obtains the kinematic parameter of the UE, and the kinematic parameter includes：It is described
The velocity attitude of the position of UE, the speed of the UE and the UE；
It is the transformation N that the UE configures the cell that little district's groups are included according to the speed of the UEmaxL
Such as NmaxLIt is configured to 3, L and represents friction speed grade；
Position, the velocity attitude of the UE according to the UE, the metrical information, NmaxLAnd
Preset algorithm determines the Target cell group for the user equipment.
Specifically, in the present embodiment, macro base station is that the UE selectes cell 3,4,5 as Target cell group
Process can refer in the cell group selection embodiment example of the correlation in embodiment of the method corresponding to accompanying drawing 4
The method of introduction.
Step S604：Macro base station sends connection request, and Resources allocation to Target cell group；
Step S605：Macro base station sends releasing request to cell-of-origin group；
Step S606：Target cell group carries out response；
Step S607：Cell-of-origin group carries out response；
Step S608：Macro base station sends wireless heterogeneous networks to UE and reconfigures (RRC is reconfigured) request；
Step S609：UE carries out response；
Step S610：Reconfigure and complete；
Step S611：UE is synchronized with Target cell group；
Step S612：The RSRQ of each cell in UE measurement Target cell groups；
Step S613：Measurement result is reported into macro base station；
Step S614：Macro base station selects the best cells of wherein RSRQ, this cell enter line number to UE
According to service；
Step S615：Data Forwarding；
Step S616：Data transfer.
Although disclosed herein embodiment as above, described content is only to readily appreciate the present invention
And the embodiment for adopting, it is not limited to the present invention.Technology people in any art of the present invention
Member, without departing from disclosed herein spirit and scope on the premise of, can be in the form implemented and thin
Any modification and change, but the scope of patent protection of the present invention are carried out on section, still must be with appended right
The scope defined by claim is defined.
Claims (12)
1. a kind of changing method, it is characterised in that include：
The metrical information that receive user equipment UE is reported, wherein, the metrical information includes X cell
Reference Signal Received Quality RSRQ and Reference Signal Received Power RSRP；In the X cell
It is individual including Y cell in the cell-of-origin group at UE places and the Z for being not belonging to the cell-of-origin group
Cell；
Judge whether to need for the UE switching cells according to the metrical information and default switching condition
Group；
When it is determined that need for the UE switching cells group when, be that the UE determines Target cell group, and will
The UE is switched to the Target cell group from the cell-of-origin group.
2. method according to claim 1, it is characterised in that
The default switching condition includes：RSRQneighbour>RSRQs-max+Δ；Wherein, RSRQneighbour
Represent the RSRQ, RSRQ of any one cell beyond the cell-of-origin group that the UE is receiveds-max
Represent the maximum of the RSRQ of Y cell in the cell-of-origin group that the UE is received, Δ is to cut
Change amount of bias；
Accordingly, it is described to judge whether that needs are according to the cell measurement information and default switching condition
User equipment switching cell group includes：
When the RSRQ of arbitrary cell in the Z cell that the UE is received is received more than the UE
In the cell-of-origin group for arriving the maximum of the RSRQ of Y cell and Δ and when, it is determined that needing for institute
State UE switching cells group；
When the RSRQ of arbitrary cell in the Z cell that the UE is received is less than or equal to described
In the cell-of-origin group that UE is received the maximum of the RSRQ of Y cell and Δ and when, it is determined that
It need not be UE switching cells group.
3. method according to claim 1, it is characterised in that described to determine target for the UE
Little district's groups, including：
The kinematic parameter of the UE is obtained, the kinematic parameter includes：It is the position of the UE, described
The velocity attitude of the speed of UE and the UE；
It is the transformation that the UE configures the cell that little district's groups are included according to the speed of the UE
NmaxL, L represents friction speed grade；
Position, the velocity attitude of the UE according to the UE, the metrical information, NmaxLAnd
Preset algorithm determines the Target cell group for the user equipment, wherein, the Target cell group is medium and small
Area's quantity M≤Z and M≤NmaxL。
4. method according to claim 1, it is characterised in that before methods described, the side
Method also includes：
The cell-of-origin group is determined for the UE, specifically include：
The kinematic parameter of the UE is obtained, the kinematic parameter includes：It is the position of the UE, described
The velocity attitude of the speed of UE and the UE；
It is the transformation that the UE configures the cell that little district's groups are included according to the speed of the UE
NmaxL, L represents friction speed grade；
Position, the velocity attitude of the UE according to the UE, the metrical information, NmaxLAnd
Preset algorithm determines the cell-of-origin group for the UE, wherein, Y≤NmaxL。
5. method according to claim 3, it is characterised in that methods described also includes：
It is after the UE to be switched to the Target cell group, little according to the target of UE measurements
In district's groups the RSRQ of M cell and select the corresponding cells of maximum RSRQ for the UE service.
6. method according to claim 1, it is characterised in that methods described also includes：
When it is determined that need not be the UE switching cells group, according to Y cell in the cell-of-origin group
RSRQ judge whether to need to switch Serving cell for the UE in the cell-of-origin group；
When the RSRQ in the cell-of-origin group for the cell of UE services is not Y cell
During maximum in RSRQ, the corresponding cell of maximum in the RSRQ of the Y cell is selected to be
The UE services.
7. a kind of switching device, it is characterised in that include：
Receiving unit, for the metrical information that receive user equipment UE is reported, wherein, the metrical information
Including the Reference Signal Received Quality RSRQ and Reference Signal Received Power RSRP of X cell；Institute
State Y cell and be not belonging to the source that X cell include in the cell-of-origin group that the UE is located
Z cell of little district's groups；
First judging unit, for judging whether needs according to the metrical information and default switching condition
For UE switching cells group；
Processing unit, for when it is determined that need for the UE switching cells group when, be that the UE determines mesh
Little district's groups are marked, and the UE is switched to into the Target cell group from the cell-of-origin group.
8. device according to claim 7, it is characterised in that
The default switching condition includes：RSRQneighbour>RSRQs-max+Δ；Wherein, RSRQneighbour
Represent the RSRQ, RSRQ of any one cell beyond the cell-of-origin group that the UE is receiveds-max
Represent the maximum of the RSRQ of Y cell in the cell-of-origin group that the UE is received, Δ is to cut
Change amount of bias；
Accordingly, first judging unit specifically for：
When the RSRQ of arbitrary cell in the Z cell that the UE is received is received more than the UE
In the cell-of-origin group for arriving the maximum of the RSRQ of Y cell and Δ and when, it is determined that needing for institute
State UE switching cells group；
When the RSRQ of arbitrary cell in the Z cell that the UE is received is less than or equal to described
In the cell-of-origin group that UE is received the maximum of the RSRQ of Y cell and Δ and when, it is determined that
It need not be UE switching cells group.
9. device according to claim 7, it is characterised in that the processing unit specifically for：
The kinematic parameter of the UE is obtained, the kinematic parameter includes：It is the position of the UE, described
The velocity attitude of the speed of UE and the UE；
It is the transformation that the UE configures the cell that little district's groups are included according to the speed of the UE
NmaxL, L represents friction speed grade；
Position, the velocity attitude of the UE according to the UE, the metrical information, NmaxLAnd
Preset algorithm determines the Target cell group for the user equipment, wherein, the Target cell group is medium and small
Area's quantity M≤Z and M≤NmaxL。
10. device according to claim 7, it is characterised in that the processing unit be additionally operable to for
The UE determines the cell-of-origin group, specifically for：
The kinematic parameter of the UE is obtained, the kinematic parameter includes：It is the position of the UE, described
The velocity attitude of the speed of UE and the UE；
It is the transformation that the UE configures the cell that little district's groups are included according to the speed of the UE
NmaxL, L represents friction speed grade；
Position, the velocity attitude of the UE according to the UE, the metrical information, NmaxLAnd
Preset algorithm determines the cell-of-origin group for the UE, wherein, Y≤NmaxL。
11. devices according to claim 9, it is characterised in that the processing unit is additionally operable to：
It is after the UE to be switched to the Target cell group, little according to the target of UE measurements
In district's groups the RSRQ of M cell and select the corresponding cells of maximum RSRQ for the UE service.
12. devices according to claim 7, it is characterised in that described device also includes：
Second judging unit, for when it is determined that need not be the UE switching cells group, according to the source
In little district's groups, the RSRQ of Y cell judges whether to need to switch in the cell-of-origin group for the UE
Serving cell；
Switch unit, when the RSRQ in the cell-of-origin group for the cell of UE services is not Y
During maximum in the RSRQ of individual cell, maximum in the RSRQ of the Y cell is selected correspondingly
Cell be the UE service.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510578271.XA CN106535271A (en) | 2015-09-11 | 2015-09-11 | Switching method and device |
| PCT/CN2016/077023 WO2016177163A1 (en) | 2015-09-11 | 2016-03-22 | Method and apparatus for handover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510578271.XA CN106535271A (en) | 2015-09-11 | 2015-09-11 | Switching method and device |
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| CN (1) | CN106535271A (en) |
| WO (1) | WO2016177163A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107333293A (en) * | 2017-07-28 | 2017-11-07 | 广东欧珀移动通信有限公司 | Metrical information report method and device |
| WO2019095396A1 (en) * | 2017-11-20 | 2019-05-23 | 华为技术有限公司 | Data transmission node determination method and apparatus |
| WO2021003715A1 (en) * | 2019-07-10 | 2021-01-14 | Oppo广东移动通信有限公司 | Conditional handover method and apparatus |
| WO2022082600A1 (en) * | 2020-10-22 | 2022-04-28 | Apple Inc. | Target cell id for conditional handover and conditional pscell addition or change |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109862598B (en) * | 2017-11-30 | 2021-04-20 | 中国电信股份有限公司 | Cell reselection method, device and computer readable storage medium |
| CN113055963B (en) * | 2021-03-30 | 2022-08-19 | 联想(北京)有限公司 | Information processing method and service equipment of communication network |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103369504B (en) * | 2009-02-02 | 2017-05-24 | 华为技术有限公司 | Mobility management method and device |
| CN102217392B (en) * | 2009-02-02 | 2013-08-07 | 华为技术有限公司 | A method of mobility management and a device and a terminal equipment |
| CN103369608B (en) * | 2009-02-02 | 2016-06-15 | 华为技术有限公司 | Mobile management method and device |
| CN103139856A (en) * | 2011-11-30 | 2013-06-05 | 中国移动通信集团设计院有限公司 | Residential quarter handover decision method and related device |
| CN111447653A (en) * | 2013-08-09 | 2020-07-24 | 三菱电机株式会社 | Mobile communication system, base station, and mobile terminal |
-
2015
- 2015-09-11 CN CN201510578271.XA patent/CN106535271A/en active Pending
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- 2016-03-22 WO PCT/CN2016/077023 patent/WO2016177163A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107333293A (en) * | 2017-07-28 | 2017-11-07 | 广东欧珀移动通信有限公司 | Metrical information report method and device |
| WO2019095396A1 (en) * | 2017-11-20 | 2019-05-23 | 华为技术有限公司 | Data transmission node determination method and apparatus |
| WO2021003715A1 (en) * | 2019-07-10 | 2021-01-14 | Oppo广东移动通信有限公司 | Conditional handover method and apparatus |
| CN113329420A (en) * | 2019-07-10 | 2021-08-31 | Oppo广东移动通信有限公司 | Condition switching method and device |
| CN113329420B (en) * | 2019-07-10 | 2022-10-04 | Oppo广东移动通信有限公司 | Method and device for switching conditions |
| WO2022082600A1 (en) * | 2020-10-22 | 2022-04-28 | Apple Inc. | Target cell id for conditional handover and conditional pscell addition or change |
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| Publication number | Publication date |
|---|---|
| WO2016177163A1 (en) | 2016-11-10 |
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