CN106358173A - Down-link cell-edge user determination method and device - Google Patents
Down-link cell-edge user determination method and device Download PDFInfo
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- CN106358173A CN106358173A CN201510416447.1A CN201510416447A CN106358173A CN 106358173 A CN106358173 A CN 106358173A CN 201510416447 A CN201510416447 A CN 201510416447A CN 106358173 A CN106358173 A CN 106358173A
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- rsrp
- reference signal
- signal received
- received power
- cell
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/005—Discovery of network devices, e.g. terminals
Abstract
The invention relates to a down-link cell-edge user determination method and a down-link cell-edge user determination device with an aim to solve the problem about poor accuracy existing in the cell-edge user determination method in the prior art. The down-link cell-edge user determination method includes: S1, acquiring reference signal received power (RSRP) of a service cell where a target user is located and reference signal received power of multiple neighboring cells, and taking the neighboring cell with the largest reference signal received power as the strongest neighboring cell; judging whether or not (RSRPservice-RSRPneighbor) is smaller than RSRPthi and RSRPneighbor is greater than RSRPth2, and if yes, identifying the target user as a cell-edge user. Two judgment conditions that (RSRPservice-RSRPneighbor) is smaller than RSRPthi and RSRPneighbor is greater than RSRPth2 are adopted, the RSRP of the target user in the service cell is taken into consideration, the RSRP of the neighboring cells is also considered, ignorance of interference factors of the neighboring cells is avoided, and accuracy in determining the cell-edge users in improved.
Description
Technical field
The present invention relates to mobile communication technology field is and in particular to a kind of downlink edge is used
Family determines that method and a kind of downlink edge customer determine device.
Background technology
In a communications system, the availability of frequency spectrum and QoS (quality of service,
Abbreviation qos) be system important performance indexes.In order to reach high spectrum efficiency, in portion
Frequency duplex factor as one to be made as far as possible close to 1 during administration's network.In order to provide gratifying clothes
Business, needs to ensure user, the particularly qos of Cell Edge User.Long Term Evolution (long
Term evolution, abbreviation lte) system adopt OFDM (orthogonal
Frequency division multiplexing, abbreviation ofdm) technology, by the information of user
It is carried on mutually orthogonal different carrier wave, same with contrary frequency Selective intensity and elimination
Interference between each user in cell.Like this, all of interference comes from other cells,
I.e. presence of intercell interference.If being 1 using frequency duplex factor as one, presence of intercell interference can increase.Its
In, positioned at the performance meeting of the user (hereinafter referred to as: edge customer) of cell edge region
It is greatly affected.
Itself there is no presence of intercell interference suppression mechanism, third generation cooperation partner for ofdm technology
Propose multiple with plan (3rd generation partnership project, abbreviation 3gpp)
Solution.A kind of the most frequently used solution is to adopt Inter-Cell Interference Coordination
(inter-cell interference coordination, abbreviation icic) technology.This icic skill
The basic thought of the descending icic technology in art is: the edge customer of neighbor cell does not use phase
Same running time-frequency resource, carries out descending power distribution adjustment simultaneously, with effective this cell of reduction
The strong jamming of the adjacent cell suffered by edge customer, improves marginal user performance.Basic by this
Thought understands, divides exactly or determines edge customer, is to improve Inter-Cell Interference Coordination to calculate
One key element of method performance.
At present, edge customer determines that method mainly has two kinds, and the first is according to user feedback
Downstream broadband CQI (channel quality indicator, abbreviation cqi)
It is determined, specially the user less than default downlink bandwidth cqi threshold value is defined as side
Edge user；Second is the Reference Signal Received Power (reference according to user service cell
Signal receiving power, abbreviation rsrp) it is determined.
Due to user, in moving process, fast decayization impact ratio is larger, leads to the cqi measuring
Inaccurate, so being inaccurate according to the edge customer that first method determines.Second side
The shortcoming of method is to only take into account the power of channel, and have ignored the interference factor of adjacent cell.
Content of the invention
For drawbacks described above, the present invention provides a kind of downlink edge customer to determine method and dress
Put, to solve the problems, such as to determine in prior art that the method accuracy of edge customer is poor.
In a first aspect, described downlink edge customer determines that method includes:
S1, obtain the Reference Signal Received Power of targeted customer place Serving cell and multiple adjacent
The Reference Signal Received Power of cell, and the maximum neighbor cell of Reference Signal Received Power is made
For the strongest adjacent cell,
Wherein, the Reference Signal Received Power of described Serving cell is rsrpservice, described
The Reference Signal Received Power of strong adjacent cell is rsrpneighbor；
S2, judgement | rsrpservice-rsrpneighbor|<rsrpth1And rsrpneighbor>rsrpth2
Whether all set up,
If all setting up, described targeted customer is designated edge customer；
Wherein, rsrpth1For the first predetermined threshold value, rsrpth2For the second predetermined threshold value.
Further, described step s1 includes:
Obtain the Reference Signal Received Power of targeted customer place Serving cell according to predetermined period
Reference Signal Received Power with multiple neighbor cells.
Further, also included before described step s1:
S0, judge that described targeted customer's identifies whether as edge customer,
If so, then judge whether described targeted customer is changed into central user,
Otherwise, execute described step s1.
Further, described judge whether described targeted customer is changed into central user, comprising:
Judge | rsrpservice-rsrpneighbor|>rsrpth3Whether set up, if so, will be described
Targeted customer is designated central user,
Wherein, rsrpth3For rsrpth1With default bias amount sum.
Second aspect, described kind of downlink edge customer determines that device includes:
Acquisition module, for obtaining the Reference Signal Received Power of targeted customer place Serving cell
With the Reference Signal Received Power of multiple neighbor cells, and will be maximum for Reference Signal Received Power
Neighbor cell as the strongest adjacent cell,
Wherein, the Reference Signal Received Power of described Serving cell is rsrpservice, described
The Reference Signal Received Power of strong adjacent cell is rsrpneighbor；
First judge module, for judging | rsrpservice-rsrpneighbor|<rsrpth1With
rsrpneighbor>rsrpth2Whether all set up,
If all setting up, described targeted customer is designated edge customer；
Wherein, rsrpth1For the first predetermined threshold value, rsrpth2For the second predetermined threshold value.
Further, described acquisition module is little according to service that predetermined period acquisition targeted customer is located
The Reference Signal Received Power in area and the Reference Signal Received Power of multiple neighbor cell.
Further, described device also includes:
Second judge module, for judging that described targeted customer's identify whether as edge customer,
Wherein, described acquisition module described targeted customer be designated non-edge user in the case of,
Obtain the Reference Signal Received Power of targeted customer place Serving cell and multiple neighbor cell
Reference Signal Received Power；
3rd judge module, for the situation being designated edge customer in described targeted customer
Under, judge whether described targeted customer is changed into central user.
Further, described 3rd judge module specifically for:
Judge | rsrpservice-rsrpneighbor|>rsrpth3Whether set up, if so, will be described
Targeted customer is designated central user,
Wherein, rsrpth3For rsrpth1With default bias amount sum.
The present invention, during determining edge customer, uses Reference Signal Received Power,
With respect to the method using cqi, improve accuracy.Meanwhile, the present invention adopts two judgements
Condition: | rsrpservice-rsrpneighbor|<rsrpth1、rsrpneighbor>rsrpth2.So
Both considered rsrp in the Serving cell of targeted customer place it is also considered that neighbor cell
Rsrp, with respect to the side considering targeted customer place Serving cell rsrp simple in prior art
Method, it is to avoid ignore the interference factor of adjacent cell, improves the accuracy determining edge customer.
Brief description
The features and advantages of the present invention can be more clearly understood from by reference to accompanying drawing, accompanying drawing is to show
Meaning property and should not be construed as carrying out any restriction to the present invention, in the accompanying drawings:
Fig. 1 shows and determines one embodiment of method according to downlink edge customer of the present invention
Schematic flow sheet；
Fig. 2 shows and determines another embodiment of method according to downlink edge customer of the present invention
Schematic flow sheet；
Fig. 3 shows that downlink edge customer of the present invention determines the structure of one embodiment of device
Block diagram.
Specific embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention is described in detail.
In order to be more clearly understood that the above objects, features and advantages of the present invention, tie below
Close the drawings and specific embodiments the present invention is further described in detail.Need explanation
It is that, in the case of not conflicting, the feature in embodiments herein and embodiment can be mutual
Combination.
Elaborate a lot of details in the following description in order to fully understand the present invention, but
It is that the present invention can also be different from other modes described here to implement using other, therefore,
Protection scope of the present invention is not limited by following public specific embodiment.
The present invention provides a kind of downlink edge customer to determine method, as shown in figure 1, the party
Method includes:
S1, obtain the Reference Signal Received Power of targeted customer place Serving cell and multiple adjacent
The Reference Signal Received Power of cell, and the maximum neighbor cell of Reference Signal Received Power is made
For the strongest adjacent cell,
Wherein, the Reference Signal Received Power of described Serving cell is rsrpservice, described
The Reference Signal Received Power of strong adjacent cell is rsrpneighbor；
S2, judgement | rsrpservice-rsrpneighbor|<rsrpth1And rsrpneighbor>rsrpth2
Whether all set up,
If all setting up, described targeted customer is designated edge customer；
Wherein, rsrpth1For the first predetermined threshold value, rsrpth2For the second predetermined threshold value.
From above technical scheme, during determining edge customer, use reference
Signal reception power, with respect to the method using cqi, improves accuracy.Meanwhile, this
Bright adopt two decision conditions: | rsrpservice-rsrpneighbor|<rsrpth1、rsrpneighbor>
rsrpth2.So both considered rsrp in the Serving cell of targeted customer place it is also considered that
The rsrp of neighbor cell is little with respect to service that consideration targeted customer simple in prior art is located
The method of area rsrp, improves the accuracy determining edge customer.
User is according to the strong and weak change of base station signal it is possible to use centered on edge customer changes
Family, or it is changed into edge customer from central user.In specific implementation process, in order to know mesh
Whether the state of mark user changes, and can obtain targeted customer according to predetermined period in step s1
The reference signal of the Reference Signal Received Power of place Serving cell and multiple neighbor cell receives
Power, periodically obtains the state of targeted customer.
Generally, before a cycle, all ID can be used for non-edge
Family.As shown in Fig. 2 may also include that before described step s1
S0, judge that described targeted customer's identifies whether as edge customer,
If so, then judge whether described targeted customer is changed into central user,
Otherwise, execute described step s1.
The mark meaning that targeted customer of " otherwise " in above-mentioned is not edge customer.
It can be seen that, if in upper a cycle, targeted customer is not identified as edge customer, in this week
In phase, then whether targeted customer to be judged is changed into edge customer.If target in upper a cycle
User meets two decision conditions, and targeted customer is identified as edge customer, within this cycle
Then judge whether targeted customer is changed into central user.So, step s0 provides a kind of execution
The prerequisite of s1, s2, targeted customer not be used in each cycle and is carried out judging edge customer
Two decision conditions, reduce overhead.
In specific implementation process, in can judging whether targeted customer is changed into using following methods
Heart user:
Judge | rsrpservice-rsrpneighbor|>rsrpth3Whether set up, if so, will be described
Targeted customer is designated central user,
Wherein, rsrpth3For rsrpth1With default bias amount sum.
The present invention increased default bias amount as judgement on the basis of the first predetermined threshold value
Targeted customer whether centered on user the 3rd predetermined threshold value, improve and judge central user
Threshold is it is therefore prevented that pingpang handoff between edge customer and central user for the targeted customer.
The present invention considers some specific factoies in actual environment, such as shade, interior etc. other
Factor affects, will be weak for some signal intensitys, but the also less user that is interfered excludes on side
Outside edge user, because this kind of user is after interference coordination algorithm reduces its interference, its channel
Situation will not be improved significantly can significantly carry it is ensured that edge band to be given as far as possible those
High performance edge customer.
Present invention also offers a kind of downlink edge customer determines device, as shown in figure 3,
This device 100 includes:
Acquisition module 101, the reference signal for obtaining targeted customer place Serving cell receives
Power and the Reference Signal Received Power of multiple neighbor cell, and by Reference Signal Received Power
Big neighbor cell as the strongest adjacent cell,
Wherein, the Reference Signal Received Power of described Serving cell is rsrpservice, described
The Reference Signal Received Power of strong adjacent cell is rsrpneighbor；
First judge module 102, for judging | rsrpservice-rsrpneighbor|<rsrpth1With
rsrpneighbor>rsrpth2Whether all set up,
If all setting up, described targeted customer is designated edge customer；
Wherein, rsrpth1For the first predetermined threshold value, rsrpth2For the second predetermined threshold value.
Further, described acquisition module is little according to service that predetermined period acquisition targeted customer is located
The Reference Signal Received Power in area and the Reference Signal Received Power of multiple neighbor cell.
Further, this device also includes:
Second judge module 103, for judge described targeted customer identify whether for edge use
Family；
Wherein, described acquisition module is in the situation being designated non-edge user of described targeted customer
Under, obtain the Reference Signal Received Power of targeted customer place Serving cell and multiple neighbor cell
Reference Signal Received Power.
3rd judge module 104, for the feelings being designated edge customer in described targeted customer
Under condition, then judge whether described targeted customer is changed into central user.
Further, described 3rd judge module specifically for:
Judge | rsrpservice-rsrpneighbor|>rsrpth3Whether set up, if so, will be described
Targeted customer is designated central user,
Wherein, rsrpth3For rsrpth1With default bias amount sum.
Downlink edge customer of the present invention determines device, is downlink edge customer of the present invention
Determine the function structure module of method, refer to the present invention about explanation, explanation and beneficial effect
Downlink edge customer determines the appropriate section in method, repeats no more here.
In sum, to determine that method and device has following excellent for downlink edge customer of the present invention
Point:
(1) two decision conditions are adopted: | rsrpservice-rsrpneighbor|<rsrpth1、
rsrpneighbor>rsrpth2Judge whether targeted customer is edge customer, improve edge customer
The accuracy determining；
(2) whether judge targeted customer by the way of the first predetermined threshold value adds default bias amount
It is changed into central user it is therefore prevented that table tennis between edge customer and central user for the targeted customer
Switching.
Technical scheme is described in detail above in association with accompanying drawing it is contemplated that in prior art
The problem that residual multiple users interference brings.By technical scheme, residual can be reduced many
With interference, thus reducing the various problems that it brings.
In the present invention, term " first ", " second ", " the 3rd " are only used for describing purpose,
And it is not intended that indicating or hint relative importance.Term " multiple " refer to two or two with
On, limit unless otherwise clear and definite.
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art can
To make various modifications and variations without departing from the spirit and scope of the present invention, so
Modification and within the scope of modification each falls within and is defined by the appended claims.
Claims (8)
1. a kind of downlink edge customer determines method it is characterised in that including:
S1, obtain the Reference Signal Received Power of targeted customer place Serving cell and multiple adjacent
The Reference Signal Received Power of cell, and the maximum neighbor cell of Reference Signal Received Power is made
For the strongest adjacent cell,
Wherein, the Reference Signal Received Power of described Serving cell is rsrpservice, described
The Reference Signal Received Power of strong adjacent cell is rsrpneighbor；
S2, judgement | rsrpservice-rsrpneighbor|<rsrpth1And rsrpneighbor>rsrpth2
Whether all set up,
If all setting up, described targeted customer is designated edge customer；
Wherein, rsrpth1For the first predetermined threshold value, rsrpth2For the second predetermined threshold value.
2. method according to claim 1 is it is characterised in that described step s1 includes:
Obtain the Reference Signal Received Power of targeted customer place Serving cell according to predetermined period
Reference Signal Received Power with multiple neighbor cells.
3. method according to claim 2 is it is characterised in that before described step s1
Also include:
S0, judge that described targeted customer's identifies whether as edge customer,
If so, then judge whether described targeted customer is changed into central user,
Otherwise, execute described step s1.
4. method according to claim 3 is it is characterised in that the described target of described judgement
Whether user is changed into central user, comprising:
Judge | rsrpservice-rsrpneighbor|>rsrpth3Whether set up, if so, will be described
Targeted customer is designated central user,
Wherein, rsrpth3For rsrpth1With default bias amount sum.
5. a kind of downlink edge customer determines device it is characterised in that including:
Acquisition module, for obtaining the Reference Signal Received Power of targeted customer place Serving cell
With the Reference Signal Received Power of multiple neighbor cells, and will be maximum for Reference Signal Received Power
Neighbor cell as the strongest adjacent cell,
Wherein, the Reference Signal Received Power of described Serving cell is rsrpservice, described
The Reference Signal Received Power of strong adjacent cell is rsrpneighbor；
First judge module, for judging | rsrpservice-rsrpneighbor|<rsrpth1With
rsrpneighbor>rsrpth2Whether all set up,
If all setting up, described targeted customer is designated edge customer；
Wherein, rsrpth1For the first predetermined threshold value, rsrpth2For the second predetermined threshold value.
6. device according to claim 5 it is characterised in that described acquisition module according to
Predetermined period obtains the Reference Signal Received Power of targeted customer place Serving cell and multiple phase
The Reference Signal Received Power of adjacent cell.
7. device according to claim 6 is it is characterised in that also include:
Second judge module, for judging that described targeted customer's identify whether as edge customer,
Wherein, described acquisition module described targeted customer be designated non-edge user in the case of,
Obtain the Reference Signal Received Power of targeted customer place Serving cell and multiple neighbor cell
Reference Signal Received Power；
3rd judge module, for the situation being designated edge customer in described targeted customer
Under, judge whether described targeted customer is changed into central user.
8. device according to claim 7 is it is characterised in that described 3rd judge module
Specifically for:
Judge | rsrpservice-rsrpneighbor|>rsrpth3Whether set up, if so, will be described
Targeted customer is designated central user,
Wherein, rsrpth3For rsrpth1With default bias amount sum.
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|---|---|---|---|
| CN201510416447.1A CN106358173B (en) | 2015-07-15 | 2015-07-15 | Method and device for determining downlink edge user |
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|---|---|---|---|
| CN201510416447.1A CN106358173B (en) | 2015-07-15 | 2015-07-15 | Method and device for determining downlink edge user |
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| CN106358173B CN106358173B (en) | 2020-02-04 |
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Cited By (1)
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| CN109714787A (en) * | 2017-10-25 | 2019-05-03 | 普天信息技术有限公司 | Interference signal coordination approach and device |
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