CN105307258B - It is a kind of adjust pilot reference signal transmission power method and base station - Google Patents
It is a kind of adjust pilot reference signal transmission power method and base station Download PDFInfo
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- CN105307258B CN105307258B CN201510611387.9A CN201510611387A CN105307258B CN 105307258 B CN105307258 B CN 105307258B CN 201510611387 A CN201510611387 A CN 201510611387A CN 105307258 B CN105307258 B CN 105307258B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/32—TPC of broadcast or control channels
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Abstract
The embodiment of the invention discloses a kind of method for adjusting pilot reference signal transmission power and base stations.The method comprise the steps that base station obtains the same frequency MR of all UE periodic reports in Target cell；According to the RSRP of the Target cell and RSRP of neighbor cell in each same frequency MR, the ratio of cell edge MR is calculated；Target cell RB average utilization is counted, and Target cell load condition is determined according to RB average utilization, while obtaining the load condition of all neighbor cells；Obtain the target level surplus that cell switching does not occur for neighbor cell UE；It is more than preset threshold in the ratio of cell edge MR, Target cell load condition is that all neighbor cell load conditions of high load condition are low-load state, and in the case that target level surplus is not zero, one step-length of pilot reference signal transmission power of Target cell is raised.The embodiment of the present invention will not trigger neighbor cell user when ensure that adjustment Target cell pilot reference signal transmission power and be switched to Target cell, while ensure the gain effect of power adjustment.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of method and base for adjusting pilot reference signal transmission power
It stands.
Background technique
With the continuous development of mobile communication technology, user is proposed higher want to the content and quality of mobile communication
It asks, micromation, low-power consumption, broadband access and relatively rich media business including communication equipment.
Due to orthogonal frequency-time multiple access technology (OFDMA, Orthogonal Frequency Divided in communication system
Multiple Access) use, OFDMA technology by the orthogonality between frequency as distinguish user in the way of, by user
Information be carried on mutually orthogonal different carrier waves, it is all dry since the frequency that intra-cell users use is mutually orthogonal
Disturb Signal Interference and Noise Ratio (the Signal to that Cell Center User can also be greatly improved all from other cells
Interference plus Noise Ratio, SINR), so as to provide higher data rate and better Service Quality
Amount, but for the user of cell edge, due to the user that neighboring community occupies same carrier resource it is interfered it is bigger, in addition
In itself farther out apart from base station, SINR is relatively just smaller, although leading to the higher Cell Edge User of handling capacity of entire cell
The situation that service quality is poor, handling capacity is lower, and with this cell of extensive use of small base station (such as the base station Pico)
Between interfere with each other it is more serious.
It is interfered with each other between base station to reduce, a kind of mode is the handover measurement control triggering using cell where base station
Measurement report (Measurement Report, MR) receives power according to current area reference information in the MR reported
The assessment of (Reference Signal Receiving Power, RSRP) and the absolute value of neighbor cell RSRP size is small to neighbours
The disturbed condition in area is adjusted the pilot reference signal transmission power of current area according to statistical result and judgement standard.
But the above-mentioned MR event based on handover measurement control can only be collected into the region letter where the UE that may be switched
Breath, the ratio of this certain customers also has no way of counting, and can not embody the disturbed condition that all users of entire cell are subject to, while by
In no peer-to-peer information for obtaining neighbor cell, the state of neighbor cell edge customer can not be known, so current area is improved
After adjusting power, the interference to neighbor cell may be will increase, it is also possible to trigger neighbor cell user and be switched to this cell, reduce
Therefore the available resources of the original user in current area only carry out assessment according to the data of current area acquisition and pilot tone are joined
Signal transmission power adjustment is examined, can not determine that the influence to neighbor cell, the gain of whole network not can guarantee after adjustment.
Summary of the invention
The embodiment of the invention provides a kind of method for adjusting pilot reference signal transmission power and base stations, ensure that adjustment
Neighbor cell user will not be triggered when Target cell pilot reference signal transmission power and is switched to Target cell, while ensuring function
The gain effect of rate adjustment.
First aspect of the embodiment of the present invention provides a kind of method for adjusting pilot reference signal transmission power, comprising:
The same frequency that base station obtains all user equipment (UE) periodic reports in the Target cell under the base station range is surveyed
Amount report MR, wherein each with the Reference Signal Received Power RSRP and neighbor cell in frequency MR including the Target cell
RSRP；
The base station is according to each the same as the RSRP of Target cell described in the frequency MR and RSRP of neighbor cell, calculating cell side
The ratio of edge MR；
The base station counts the Target cell resource block RB average utilization, and is determined according to the RB average utilization
The Target cell load condition, and obtain the load condition of all neighbor cells, wherein cell load status includes high load
Two kinds of load conditions of state and low-load state；
The base station obtains the neighbor cell UE and the target level surplus that cell is switched to the Target cell does not occur,
The target level surplus is that the level surplus that cell is switched to the Target cell does not occur for all UE in the neighbor cell
In minimum value；
It is more than preset threshold in the ratio of the cell edge MR, the Target cell load condition is high load condition,
In the case that all neighbor cell load conditions are low-load state and the target level surplus is not zero, institute
One step-length of pilot reference signal transmission power that the Target cell is raised in base station is stated, the step-length is less than or equal to the target
Level surplus.
In conjunction with the embodiment of the present invention in a first aspect, the first aspect of the embodiment of the present invention the first possible realization
In mode,
The base station is according to each the same as the RSRP of Target cell described in the frequency MR and RSRP of neighbor cell, calculating cell side
The ratio of edge MR, comprising:
The base station respectively using it is described be each target with frequency MR with frequency MR, in target with Target cell described in frequency MR
The RSRP of RSRP and neighbor cell, when meeting SerRSRP-NeighRSRP < xdB, determine the target with frequency MR be cell
Edge MR, wherein SerRSRP is RSRP of the target with Target cell described in frequency MR, and NeighRSRP is that the target is same
The RSRP of a neighbor cell in frequency MR, x are preset value and are positive integer；
After determining all cell edge MR, calculate that cell edge MR accounts for that the base station receives is all for the base station
With the ratio of frequency MR.
In conjunction with the first aspect of the embodiment of the present invention or the first possible implementation of first aspect, of the invention real
It applies in second of possible implementation of the first aspect of example,
The base station counts the Target cell resource block RB average utilization, and is determined according to the RB average utilization
The Target cell load condition, comprising:
The base station counts the Target cell resource block RB average utilization, is greater than in the Target cell RB utilization rate
When equal to 60%, determines that the Target cell load condition is high load condition, be less than in the Target cell RB utilization rate
When 60%, determine that the Target cell load condition is low-load state.
In conjunction with the first aspect of the embodiment of the present invention or the first possible implementation or first aspect of first aspect
Second of possible implementation, in the third possible implementation of the first aspect of the embodiment of the present invention,
The method also includes:
It is high load condition in the Target cell load condition, the ratio of the cell edge MR is more than preset threshold
When, and all neighbor cell load conditions are not all low-load state or in the case that the target level surplus is zero,
The base station sends power adjustment request to target BS, and the target BS is that load condition is in all neighbor cells
The corresponding base station in the neighbor cell of low-load state.
In conjunction with the embodiment of the present invention first aspect to first aspect the third possible implementation, of the invention real
It applies in the 4th kind of possible implementation of the first aspect of example,
The method also includes:
In the case where the Target cell load condition is low-load state, it is corresponding that the base station receives neighbor cell
The power adjustment request that base station is sent；
In the case that the target level surplus is not zero, the pilot reference signal of the Target cell is lowered in the base station
One step-length of transmission power, the step-length are less than or equal to the target level surplus.
Second aspect of the embodiment of the present invention provides a kind of base station, comprising:
MR acquiring unit, for user equipment (UE) periodic reports all in the Target cell under the base station range
Same-frequency measure reporting MR, wherein each with the Reference Signal Received Power RSRP and neighbours in frequency MR including the Target cell
The RSRP of cell；
Computing unit, for according to each with the RSRP of Target cell described in the frequency MR and RSRP of neighbor cell, calculating
The ratio of cell edge MR；
Load condition acquiring unit, for counting the Target cell resource block RB average utilization, and according to the RB
Average utilization determines the Target cell load condition, and obtains the load condition of all neighbor cells, wherein cell load
State includes two kinds of load conditions of high load condition and low-load state；
Cell does not occur for obtaining the neighbor cell UE and is switched to the Target cell for level surplus acquiring unit
Target level surplus, the target level surplus are that all UE cell do not occur to be switched to the target small in the neighbor cell
Minimum value in the level surplus in area；
Adjustment unit is more than preset threshold, the Target cell load condition for the ratio in the cell edge MR
For high load condition, all neighbor cell load conditions are low-load state and the target level surplus is not
In the case where zero, one step-length of pilot reference signal transmission power of the Target cell is raised, the step-length is less than or equal to institute
State target level surplus.
In conjunction with the second aspect of the embodiment of the present invention, in the first possible realization of the second aspect of the embodiment of the present invention
In mode,
The computing unit be specifically used for respectively using it is described be each target with frequency MR with frequency MR, in target with institute in frequency MR
The RSRP for stating RSRP and neighbor cell of Target cell when meeting SerRSRP-NeighRSRP < xdB, determines the target
It is cell edge MR with frequency MR, wherein SerRSRP is RSRP of the target with Target cell described in frequency MR, NeighRSRP
It is preset value with the RSRP of a neighbor cell in frequency MR, x for the target and is positive integer；Determining all cell edges
After MR, the ratio that cell edge MR accounts for all same frequency MR that the base station receives is calculated.
In conjunction with the second aspect of the embodiment of the present invention or the first possible implementation of second aspect, of the invention real
It applies in second of possible implementation of the second aspect of example,
The load condition acquiring unit is specifically used for counting the Target cell resource block RB average utilization, described
When Target cell RB utilization rate is more than or equal to 60%, determine that the Target cell load condition is high load condition, in the mesh
When marking cell RB utilization rate less than 60%, determine that the Target cell load condition is low-load state.
In conjunction with the second aspect of the embodiment of the present invention or the first possible implementation or second aspect of second aspect
Second of possible implementation, in the third possible implementation of the second aspect of the embodiment of the present invention,
The adjustment unit is also used in the Target cell load condition be high load condition, the cell edge MR's
When ratio is more than preset threshold, and all neighbor cell load conditions are not all more than low-load state or the target level
In the case that amount is not zero, power adjustment request is sent to target BS, the target BS is in all neighbor cells
Load condition is the corresponding base station in neighbor cell of low-load state.
In conjunction with the embodiment of the present invention second aspect to second aspect the third possible implementation, of the invention real
It applies in the 4th kind of possible implementation of the second aspect of example,
The base station further includes receiving unit, and the receiving unit is used in the Target cell load condition be low-load
In the case where state, the power adjustment request that the corresponding base station in neighbor cell is sent is received；
The adjustment unit is also used to lower the Target cell in the case where the target level surplus is not zero
One step-length of pilot reference signal transmission power, the step-length are less than or equal to the target level surplus.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that
In the embodiment of the present invention the Target cell load condition be high load condition, the ratio of the cell edge MR
More than preset threshold, in the case that all neighbor cell load conditions are low-load state, the neighbor cell is obtained
The level surplus of cell switching does not occur for UE, and in the case where the level surplus is not zero, Target cell is just raised in base station
One step-length of pilot reference signal transmission power, due to obtaining the complete MR of Target cell before adjusting Target cell RSRP
Data have fully considered the load condition of neighbor cell, ensure that adjustment Target cell pilot reference signal transmission power when not
Neighbor cell user can be triggered and be switched to Target cell, while ensuring the gain effect of power adjustment.
Detailed description of the invention
Fig. 1 is one embodiment schematic diagram that the method for pilot reference signal transmission power is adjusted in the embodiment of the present invention；
Fig. 2 is one embodiment schematic diagram of base station in the embodiment of the present invention；
Fig. 3 is another embodiment schematic diagram of base station in the embodiment of the present invention.
Specific embodiment
The embodiment of the invention provides a kind of method for adjusting pilot reference signal transmission power and base stations, ensure that adjustment
Neighbor cell user will not be triggered when Target cell pilot reference signal transmission power and is switched to Target cell, while ensuring function
The gain effect of rate adjustment.
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
Description and claims of this specification and the (if present)s such as term " first " in above-mentioned attached drawing, " second "
It is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that the number used in this way
According to being interchangeable under appropriate circumstances, so as to the embodiments described herein can in addition to the content for illustrating or describing herein with
Outer sequence is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover non-exclusive packet
Contain, for example, what the process, method, system, product or equipment for containing a series of steps or units were not necessarily limited to be clearly listed
Those step or units, but may include be not clearly listed or it is intrinsic for these process, methods, product or equipment
Other step or units.
First some concepts that the embodiment of the present invention may relate to simply are introduced below.
Measurement report: Measurement Report, abbreviation MR, MR are that measurement control is sent by space interface signaling message
(frequency point information comprising measurement and the judgment criterion for reporting MR) gives user equipment (User Equipment, UE), meets on MR
When reporting criterion, UE sends MR message and gives base station (comprising this cell and neighbor cell RSRP in MR), base station specific for one
For, the RSRP of only this cell is useful signal, and the RSRP of neighbor cell is interference signal, and base station can be by each MR
The relative difference of this cell and neighbor cell RSRP judge the interference size of adjacent base station, adjust the pilot reference signal of base station
Transmission power.
SINR: Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio) refers to
The ratio of the intensity of the useful signal received and the intensity of the interference signal (noise and interference) received.
RSRP:Reference Signal Receiving Power, i.e. Reference Signal Received Power, are in LTE network
One of key parameter and the physical layer measurement demand that wireless signal strength can be represented are the carrying reference letters in some symbol
Number all RE (resource particle) on the average value of signal power that receives.
Small base station: small base station (Small Cell) refers in particular to small-sized integrated base station, is at present to be different from macro base station
The general designation of base station type is supported to support and coverage area is divided into the base station the Micro base station Pico, base station Femto etc. according to it.4G
Before epoch, small base station is mainly used for mending in blind scene, and application scenarios are narrow, still, in the 4G of high-frequency high bandwidth
After epoch, the essence of entire system capacity will be can be improved in small base station because of it, become 4G (forth generation mobile communication) epoch with
Critical network component part afterwards, position when small base station can be according to its application are divided into three kinds of different types: full
The femtocell of sufficient domestic applications, the enterprise-level/indoor base station for meeting the application of small-sized or retailer meet public place and answer
Outdoor base station.The experience of the user network in family, office and public place can be improved in small base station.
The method introduced adjust pilot reference signal transmission power in the embodiment of the present invention first is described below.
Referring to Fig. 1, one embodiment of the method for whole pilot reference signal transmission power includes: in the embodiment of the present invention
101, base station obtains the same of all user equipment (UE) periodic reports in the Target cell under the base station range
Frequency measure reporting MR；
Wherein, each in frequency MR include Target cell Reference Signal Received Power RSRP and neighbor cell RSRP,
When under base station range including multiple cells, Target cell is one in multiple cell, when only including under base station range
When one cell, Target cell is the unique Cell；
The mode that base station obtains the same frequency MR that all UE are reported in Target cell is specific as follows:
Base station passes through space interface signaling message and sends measurement control (frequency point information comprising measurement and the judgement standard for reporting MR
Then) to all UE in Target cell, when meeting MR and reporting criterion, UE sends MR message to base station (in MR in Target cell
The RSRP of RSRP and neighbor cell comprising Target cell).
102, base station is according to each the same as the RSRP of Target cell in the frequency MR and RSRP of neighbor cell, calculating cell edge MR
Ratio；
Optionally, the base station is according to each with the RSRP of Target cell in the frequency MR and RSRP of neighbor cell, calculating is small
The ratio of area edge MR may include:
The base station respectively using it is described be each target with frequency MR with frequency MR, in target with the RSRP of Target cell in frequency MR
With the RSRP of a neighbor cell, when meeting SerRSRP-NeighRSRP < xdB, determine the target with frequency MR be cell edge
MR, wherein SerRSRP is RSRP of the target with Target cell in frequency MR, and NeighRSRP is the target in frequency MR one
The RSRP of a neighbor cell, x are preset value and are positive integer, when target is with the RSRP of only one neighbor cell in frequency MR,
NeighRSRP is unique RSRP, and when target is with including the RSRP of multiple neighbor cells in frequency MR, multiple neighbours are small
The RSRP in area is followed successively by NeighRSRP, is judged, target is the same as RSRP and neighbor cell of Target cell in frequency MR
RSRP, when meeting SerRSRP-NeighRSRP < xdB, determine the target with frequency MR be cell edge MR, for example, target with frequency
It include the RSRP of Target cell RSRP and 3 neighbor cells in MR, when wherein RSRP and neighbor cell of Target cell
RSRP, meets SerRSRP-NeighRSRP < xdB, that is, determine the target with frequency MR be cell edge MR, in addition, the value of x can
To be in [1,4]；
After determining all cell edge MR, calculate that cell edge MR accounts for that the base station receives is all for the base station
With the ratio of frequency MR, such as when all same frequency MR quantity that base station receives are 100, the quantity for being determined as cell edge MR is
30, then the ratio of cell edge MR is 30% at this time.
103, the base station counts Target cell resource block RB average utilization, and is determined according to the RB average utilization
Target cell load condition, and obtain the load condition of all neighbor cells；
Wherein, cell load status includes two kinds of load conditions of high load condition and low-load state, counts Target cell
Resource block RB average utilization is existing way, and details are not described herein again.
Optionally, the base station counts Target cell resource block RB average utilization, and according to the RB average utilization
It determines Target cell load condition, may include:
The base station counts Target cell resource block RB average utilization, is more than or equal to 60% in Target cell RB utilization rate
When, determine that Target cell load condition is that high load condition determines Target cell when Target cell RB utilization rate is less than 60%
Load condition is low-load state.
In the present embodiment, base station obtains the load condition of all neighbor cells, can pass through base station and other neighbor cells
The load state information of the respective cell of X2 interface interaction between corresponding base station, obtains the load condition of all neighbor cells.
104, the base station obtains the neighbor cell UE target level that cell is switched to the Target cell does not occur
Surplus；
Wherein, level surplus is that the adjustable maximum level that cell is switched to the Target cell does not occur for each UE
Value, the target level surplus are that all UE cell does not occur are switched to more than the level of the Target cell in the neighbor cell
Minimum value in amount；
In the present embodiment, preset threshold be can be set as needed, such as 5%, and 10%, 20%, 30%, 50% etc..
Base station obtains the neighbor cell UE and the target level surplus that cell is switched to the Target cell does not occur, can be with
It is:
Base station obtains the neighbor cell UE by the X2 interface interaction between base station corresponding with neighbor cell and does not occur
Cell is switched to the target level surplus of the Target cell, i.e., the corresponding base station in described neighbor cell needs first to determine the neighbour
Occupy cell UE do not occur cell switching target level surplus be sent to institute then by the X2 interface between the base station
Base station is stated, at this point, the base station receives the target level surplus by the X2 interface.
The corresponding base station in neighbor cell determines that the mesh that cell is switched to the Target cell does not occur for the neighbor cell UE
The mode of mark level surplus may is that
The corresponding base station in neighbor cell according to each with neighbor cell in frequency MR RSRP and Target cell RSRP difference
Value determines and each do not occur the level surplus that cell is switched to the Target cell with the corresponding UE of frequency MR, and determines and obtain
Minimum value in all level surpluses, the minimum value are target level surplus, wherein each corresponding for neighbor cell with frequency MR
Base station, each of UE periodic report is the same as frequency MR in the neighbor cell obtained in advance；
The corresponding base station in the neighbor cell is according to each the same as the RSRP of neighbor cell in the frequency MR and RSRP of Target cell
Difference, determination the level surplus that cell is switched to the Target cell does not each occur with the corresponding UE of frequency MR, may include:
The corresponding base station in the neighbor cell respectively using it is described be each target with frequency MR with frequency MR, according to formula delta
=RSRP1-RSRP2+A, calculating each target, the level surplus delta that cell switches does not occur for corresponding UE with frequency MR, wherein
A is that minizone occurs with frequency handoff threshold value, and RSRP1 is the target with the RSRP of neighbor cell in frequency MR, and RSRP2 is described
RSRP of the target with Target cell in frequency MR.
After the delta for determining the received all same frequency MR in base station, the minimum value in obtained delta is determined, for example, working as
After obtaining 3 delta, respectively 2dB, 3dB, 5dB determine that minimum value is 2dB, in order to guarantee the UE of the not no neighbor cell of adjustment
Cell occurs and is switched to the Target cell, then the minimum value is the mesh of the adjustable pilot reference signal transmission power in base station
Mark level surplus.
It 105, is more than preset threshold in the ratio of the cell edge MR, the Target cell load condition is high load shape
State, in the case that all neighbor cell load conditions are low-load state and the target level surplus is not zero,
Raise one step-length of pilot reference signal transmission power of the Target cell in the base station.
Wherein, the step-length is less than or equal to the target level surplus.
When the ratio of the cell edge MR is more than preset threshold, illustrate Target cell by neighbor cell serious interference,
The pilot reference signal transmission power adjustment to base station is needed, when the target level surplus is not zero, just there is adjustment in base station
The space of pilot reference signal transmission power is high load condition, and all neighbours in the Target cell load condition
In the case that cell load status is low-load state, just it can determine that upward in the pilot reference signal transmission power to base station
After adjustment, since Target cell is high load, other neighbor cells are load, can guarantee entire net after can determining adjustment
The gain of network, when the step-length of the pilot reference signal transmission power adjusted upward is less than or equal to the target level surplus,
Neighbor cell UE cell does not occur is switched to Target cell after can determine that adjustment.
It therefore, is high load condition in the Target cell load condition, the ratio of the cell edge MR is more than default
Threshold values, all neighbor cell load conditions are low-load state and the case where the target level surplus are not zero
Under, one step-length of pilot reference signal transmission power of the base station up-regulation Target cell (is less than or equal to more than the target level
Amount), it is ensured that base station is needing to adjust pilot reference signal transmission power, and has space to go adjustment pilot reference signal transmitting
In the case where power, adjustment pilot reference signal transmission power will not trigger neighbor cell user and be switched to Target cell, and protect
The gain of whole network, improves user experience after card adjustment.
Optionally, the method can also include:
It is high load condition in the Target cell load condition, the ratio of the cell edge MR is more than preset threshold
When, and all neighbor cell load conditions are not all low-load state or the case where the target level surplus is not zero
Under, the base station sends power adjustment request to target BS, and the target BS is to load shape in all neighbor cells
State is the corresponding base station in neighbor cell of low-load state.
At this point, illustrate to need the RSRP adjustment to base station when the ratio of the cell edge MR is more than preset threshold, but
If Target cell is high load condition, when all neighbor cell load conditions are not all low-load state, the pilot tone of base station
The gain that the adjustment of reference signal transmission power not can guarantee whole network illustrates base if the target level surplus is zero
It stands without the space for carrying out the adjustment of pilot reference signal transmission power, because an adjustment will occur what UE in cell switched
Situation not can guarantee the gain of whole network equally, at this point, be high load condition in the Target cell load condition, it is described
When the ratio of cell edge MR is more than preset threshold, and all neighbor cell load conditions are not all low-load state or institute
It states in the case that target level surplus is not zero, the base station can send power adjustment request, the power tune to target BS
Whole request is used to indicate target BS and carries out the adjustment of pilot reference signal transmission power.
Optionally, the method also includes:
In the case where the Target cell load condition is low-load state, the base station receives base station in neighbor cell
The power adjustment of transmission is requested；
In the case where the target level surplus is not zero, the pilot reference signal hair of Target cell is lowered in the base station
One step-length of power is penetrated, the step-length is less than or equal to the target level surplus.
In such cases, i.e., the described base station is received in the case where the Target cell load condition is low-load state
The power adjustment of base station in high load condition is requested, in the feelings for itself being able to carry out the adjustment of pilot reference signal transmission power
Under condition (i.e. target level surplus is not zero), the pilot reference signal transmission power of Target cell is adjusted, specifically, i.e.
One step-length of pilot reference signal transmission power of Target cell is lowered, the step-length is less than or equal to the target level surplus.
Base station in the embodiment of the present invention can be macro base station, be also possible to small base station (such as the base station Micro Pico base
It stands, base station Femto etc.), since small base station is widely used in the in-door covering scene in wireless network covering, its main feature is that covering
Lid range is small, and accessing user's number is limited, and the deployment quantity needed is big and intensive, to interfere with each other more between causing small base station
To be serious, therefore use of the method for above-mentioned adjustment reference signal transmission power in small base station, effect are particularly evident.
The embodiment of base station in the embodiment of the present invention is described below.
Referring to Fig. 2, one embodiment of base station 200 includes: in the embodiment of the present invention
MR acquiring unit 201, for the user equipment (UE) periods all in the Target cell under the base station range
The same-frequency measure reporting MR of report, wherein each in frequency MR include the Target cell Reference Signal Received Power RSRP and
The RSRP of neighbor cell；
Computing unit 202, for according to each with the RSRP of Target cell described in the frequency MR and RSRP of neighbor cell, meter
Calculate the ratio of cell edge MR；
Load condition acquiring unit 203, for counting the Target cell resource block RB average utilization, and according to described
RB average utilization determines the Target cell load condition, and obtains the load condition of all neighbor cells, wherein cell is negative
Load state includes two kinds of load conditions of high load condition and low-load state；
Level surplus acquiring unit 204 cell does not occur to be switched to the target small for obtaining the neighbor cell UE
Cell does not occur for all UE in the neighbor cell and is switched to the mesh for the target level surplus in area, the target level surplus
Mark the minimum value in the level surplus of cell；
Adjustment unit 205, is more than preset threshold for the ratio in the cell edge MR, and the Target cell loads shape
State is high load condition, all neighbor cell load conditions be low-load state and the target level surplus not
In the case where being zero, one step-length of pilot reference signal transmission power of the Target cell is raised, the step-length is less than or equal to
The target level surplus.
In the embodiment of the present invention the Target cell load condition be high load condition, the ratio of the cell edge MR
More than preset threshold, all neighbor cell load conditions are low-load state and the target level surplus is not
In the case where zero, one step-length of pilot reference signal transmission power of Target cell is just raised in base station, due to small in adjustment target
Before area's pilot reference signal transmission power, the complete MR data of Target cell are obtained, have fully considered the equity of neighbor cell
Information (load condition of neighbor cell) will not trigger neighbours when ensure that adjustment Target cell pilot reference signal transmission power
Community user is switched to Target cell, while ensuring the gain effect of power adjustment.
Optionally, the computing unit 202 be specifically used for respectively using it is described be each target with frequency MR with frequency MR, in target
With the RSRP of RSRP and neighbor cell of Target cell in frequency MR, when meeting SerRSRP-NeighRSRP < xdB, institute is determined
It is cell edge MR that target, which is stated, with frequency MR, wherein SerRSRP is RSRP of the target with Target cell in frequency MR,
NeighRSRP is RSRP of the target with a neighbor cell in frequency MR, and x is preset value and is positive integer；Determining
After having cell edge MR, the ratio that cell edge MR accounts for all same frequency MR that the base station receives is calculated.
Optionally, the load condition acquiring unit 203 is specifically used for statistics Target cell resource block RB average utilization,
When Target cell RB utilization rate is more than or equal to 60%, determine that Target cell load condition is high load condition, in Target cell
When RB utilization rate is less than 60%, determine that Target cell load condition is low-load state.
Optionally, the adjustment unit 205 is also used in the Target cell load condition be high load condition, described small
When the ratio of area edge MR is more than preset threshold, and all neighbor cell load conditions are not all low-load state or described
In the case that target level surplus is not zero, the base station sends power adjustment request to target BS, and the target BS is
Load condition is the corresponding base station in neighbor cell of low-load state in all neighbor cells.
Optionally, the base station further includes receiving unit, and the receiving unit is used in the Target cell load condition
In the case where low-load state, the power adjustment request that the corresponding base station in neighbor cell is sent is received；
The adjustment unit 205 is also used to that it is small to lower the target in the case where the target level surplus is not zero
One step-length of pilot reference signal transmission power in area, the step-length are less than or equal to the target level surplus.
The base station in the embodiment of the present invention is described from the angle of blocking functional entity above, below from hardware
The base station in the embodiment of the present invention is described in the angle of processing, referring to Fig. 3, the terminal in the embodiment of the present invention includes:
Receiver 301 and processor 302 (can have one or more).
The present embodiments relate to base station can have than more or fewer components illustrated in fig. 3, can combine
Two or more components, or can have different components and configure or set up, all parts can include one or more
The combination of hardware, software or hardware and software including a signal processing and/or specific integrated circuit is realized.
The receiver 301 is for performing the following operations:
Receive the same-frequency measure reporting MR of all user equipment (UE) periodic reports in Target cell, wherein each with frequency MR
In include the Target cell Reference Signal Received Power RSRP and neighbor cell RSRP.
The processor 302 is for performing the following operations:
According to the RSRP of the Target cell and RSRP of neighbor cell described in each same frequency MR, the ratio of cell edge MR is calculated
Example；
The Target cell resource block RB average utilization is counted, and Target cell is determined according to the RB average utilization
Load condition, and obtain the load condition of all neighbor cells, wherein cell load status includes high load condition and low-load
Two kinds of load conditions of state；
It obtains the neighbor cell UE and the target level surplus that cell is switched to the Target cell, the target does not occur
Level surplus is that the minimum that cell is switched in the level surplus of the Target cell does not occur for all UE in the neighbor cell
Value；
It is more than preset threshold in the ratio of the cell edge MR, the Target cell load condition is high load condition,
In the case that all neighbor cell load conditions are low-load state and the target level surplus is not zero, on
One step-length of pilot reference signal transmission power of the Target cell is adjusted, the step-length is less than or equal to more than the target level
Amount.
Optionally, the processor 302 is specifically used for performing the following operations:
Respectively using it is described be each target with frequency MR with frequency MR, in target with the RSRP of Target cell described in frequency MR and one
The RSRP of a neighbor cell, when meeting SerRSRP-NeighRSRP < xdB, determine the target with frequency MR be cell edge MR,
Wherein, SerRSRP is RSRP of the target with Target cell described in frequency MR, and NeighRSRP is the target in frequency MR
The RSRP of neighbor cell, x are preset value and are positive integer；
After determining all cell edge MR, calculating cell edge MR accounts for all same frequency MR's that the base station receives
Ratio.
Optionally, the processor 302 is specifically used for performing the following operations:
Target cell resource block RB average utilization is counted, when Target cell RB utilization rate is more than or equal to 60%, is determined
Target cell load condition is high load condition, when Target cell RB utilization rate is less than 60%, determines that Target cell loads shape
State is low-load state.
Optionally, the processor 302 is also used to perform the following operations:
It is high load condition in the Target cell load condition, the ratio of the cell edge MR is more than preset threshold
When, and all neighbor cell load conditions are not all low-load state or in the case that the target level surplus is zero,
The base station sends power adjustment request to target BS, and the target BS is that load condition is in all neighbor cells
The corresponding base station in the neighbor cell of low-load state.
Optionally, the receiver 301 is also used to:
In the case where the Target cell load condition is low-load state, the function that base station is sent in neighbor cell is received
Rate adjustment request；
The processor 302 is also used to perform the following operations:
In the case where the target level surplus is not zero, the pilot reference signal transmission power one of Target cell is lowered
A step-length, the step-length are less than or equal to the target level surplus.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
The embodiment of the present invention also provides a kind of computer storage medium, wherein the computer storage medium can be stored with journey
Sequence, the program include at least described adjustment pilot reference signal transmission power method recorded in above method embodiment when executing
Some or all of step.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention
Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of method for adjusting pilot reference signal transmission power, which is characterized in that
Base station obtains the common frequency measurement report of all user equipment (UE) periodic reports in the Target cell under the base station range
Accuse MR, wherein each with the RSRP of the Reference Signal Received Power RSRP and neighbor cell that in frequency MR include the Target cell；
The base station is according to each the same as the RSRP of Target cell described in the frequency MR and RSRP of neighbor cell, calculating cell edge MR
Ratio；
The base station counts the Target cell resource block RB average utilization, and according to RB average utilization determination
Target cell load condition, and obtain the load condition of all neighbor cells, wherein cell load status includes high load condition
With two kinds of load conditions of low-load state；
The base station obtains all neighbor cell UE and the target level surplus that cell is switched to the Target cell does not occur,
The target level surplus is that the level that cell is switched to the Target cell does not occur for all UE in all neighbor cells
Minimum value in surplus；
It is more than preset threshold in the ratio of the cell edge MR, the Target cell load condition is high load condition, described
In the case that all neighbor cell load conditions are low-load state and the target level surplus is not zero, the base
It stands and raises one step-length of pilot reference signal transmission power of the Target cell, the step-length is less than or equal to the target level
Surplus.
2. the method according to claim 1, wherein
The base station is according to each the same as the RSRP of Target cell described in the frequency MR and RSRP of neighbor cell, calculating cell edge MR
Ratio, comprising:
The base station respectively using it is described be each target with frequency MR with frequency MR, in target with the RSRP of Target cell described in frequency MR
With the RSRP of a neighbor cell, when meeting SerRSRP-NeighRSRP < xdB, determine the target with frequency MR be cell edge
MR, wherein SerRSRP is RSRP of the target with Target cell described in frequency MR, and NeighRSRP is the target with frequency MR
In a neighbor cell RSRP, x is preset value and is positive integer；
The base station calculates cell edge MR and accounts for all same frequencies that the base station receives after determining all cell edge MR
The ratio of MR.
3. the method according to claim 1, wherein
The base station counts the Target cell resource block RB average utilization, and according to RB average utilization determination
Target cell load condition, comprising:
The base station counts the Target cell resource block RB average utilization, is more than or equal in the Target cell RB utilization rate
When 60%, determine that the Target cell load condition is high load condition, when the Target cell RB utilization rate is less than 60%,
Determine that the Target cell load condition is low-load state.
4. method according to any one of claims 1 to 3, which is characterized in that
The method also includes:
When the Target cell load condition is high load condition, and the ratio of the cell edge MR is more than preset threshold, and
All neighbor cell load conditions are not all low-load state or in the case that the target level surplus are zero, the base
It stands and sends power adjustment request to target BS, the target BS is that load condition is low-load in all neighbor cells
The corresponding base station in the neighbor cell of state.
5. method according to any one of claims 1 to 3, which is characterized in that
The method also includes:
In the case where the Target cell load condition is low-load state, the base station receives the corresponding base station in neighbor cell
The power adjustment of transmission is requested；
In the case that the target level surplus is not zero, the pilot reference signal transmitting of the Target cell is lowered in the base station
One step-length of power, the step-length are less than or equal to the target level surplus.
6. a kind of base station characterized by comprising
MR acquiring unit, the same frequency for user equipment (UE) periodic reports all in the Target cell under the base station range
Measurement report MR, wherein each with Reference Signal Received Power RSRP and the neighbor cell in frequency MR including the Target cell
RSRP；
Computing unit, for according to each with the RSRP of Target cell described in the frequency MR and RSRP of neighbor cell, calculating cell
The ratio of edge MR；
Load condition acquiring unit, for counting the Target cell resource block RB average utilization, and it is average according to the RB
Utilization rate determines the Target cell load condition, and obtains the load condition of all neighbor cells, wherein cell load status
Including two kinds of load conditions of high load condition and low-load state；
Cell does not occur for obtaining all neighbor cell UE and is switched to the Target cell for level surplus acquiring unit
Cell does not occur for all UE in all neighbor cells and is switched to the mesh for target level surplus, the target level surplus
Mark the minimum value in the level surplus of cell；
Adjustment unit, is more than preset threshold for the ratio in the cell edge MR, and the Target cell load condition is height
Load condition, all neighbor cell load conditions are that low-load state and the target level surplus are not zero
In the case of, one step-length of pilot reference signal transmission power of the Target cell is raised, the step-length is less than or equal to the mesh
Mark level surplus.
7. base station according to claim 6, which is characterized in that
The computing unit be specifically used for respectively using it is described be each target with frequency MR with frequency MR, in target with mesh described in frequency MR
The RSRP for marking RSRP and neighbor cell of cell when meeting SerRSRP-NeighRSRP < xdB, determines the target with frequency
MR is cell edge MR, wherein SerRSRP is the target with the RSRP of Target cell described in frequency MR, and NeighRSRP is institute
Target is stated to be preset value with the RSRP of a neighbor cell in frequency MR, x and be positive integer；Determining all cell edge MR
Afterwards, the ratio that cell edge MR accounts for all same frequency MR that the base station receives is calculated.
8. base station according to claim 6, which is characterized in that
The load condition acquiring unit is specifically used for counting the Target cell resource block RB average utilization, in the target
When cell RB utilization rate is more than or equal to 60%, determine that the Target cell load condition is high load condition, it is small in the target
When area's RB utilization rate is less than 60%, determine that the Target cell load condition is low-load state.
9. according to the base station any in claim 6 to 8, which is characterized in that
The adjustment unit is also used in the Target cell load condition be high load condition, the ratio of the cell edge MR
When more than preset threshold, and all neighbor cell load conditions are not all low-load state or the target level surplus not
In the case where being zero, power adjustment request is sent to target BS, the target BS is to load in all neighbor cells
State is the corresponding base station in neighbor cell of low-load state.
10. according to the base station any in claim 6 to 8, which is characterized in that
The base station further includes receiving unit, and the receiving unit is used in the Target cell load condition be low-load state
In the case where, receive the power adjustment request that the corresponding base station in neighbor cell is sent；
The adjustment unit is also used to lower the pilot tone of the Target cell in the case where the target level surplus is not zero
One step-length of reference signal transmission power, the step-length are less than or equal to the target level surplus.
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| CN201510611387.9A CN105307258B (en) | 2015-09-23 | 2015-09-23 | It is a kind of adjust pilot reference signal transmission power method and base station |
| PCT/CN2016/087480 WO2017049980A1 (en) | 2015-09-23 | 2016-06-28 | Method for adjusting pilot reference signal transmission power, and base station |
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| CN105307258B (en) * | 2015-09-23 | 2019-01-25 | 上海华为技术有限公司 | It is a kind of adjust pilot reference signal transmission power method and base station |
| CN107517469A (en) * | 2016-06-17 | 2017-12-26 | 华为技术有限公司 | The method and apparatus of cell adjustment |
| CN105933916B (en) * | 2016-06-27 | 2019-08-23 | 广东海格怡创科技有限公司 | Detection ratio method and apparatus in co-frequency cell are obtained based on MR in LTE network |
| CN106792730A (en) * | 2016-12-20 | 2017-05-31 | 京信通信技术(广州)有限公司 | A kind of end side interference detecting method, base station and terminal |
| WO2019010713A1 (en) * | 2017-07-14 | 2019-01-17 | 深圳前海达闼云端智能科技有限公司 | Method, device, and base station for terminal switching, and storage medium |
| CN111726181B (en) * | 2019-03-18 | 2022-10-21 | 中兴通讯股份有限公司 | Method and device for acquiring channel state information |
| CN113301612B (en) * | 2020-02-21 | 2023-03-31 | 上海诺基亚贝尔股份有限公司 | Method and apparatus for determining information for mobile device positioning |
| CN113709765B (en) * | 2020-05-22 | 2024-03-12 | 中国移动通信集团吉林有限公司 | Method and device for determining minimum access level and computer equipment |
| CN114173385B (en) * | 2020-09-10 | 2023-06-02 | 华为技术有限公司 | Cell measurement method, device and system |
| CN112770381B (en) * | 2021-01-12 | 2022-02-08 | 中国科学院数学与系统科学研究院 | Method and device for adjusting total pilot signal transmission power of each sub-area in area |
| CN115442820B (en) * | 2021-06-03 | 2024-05-28 | 中国移动通信集团四川有限公司 | Cell service optimization method and device and electronic equipment |
| CN117528725A (en) * | 2022-07-30 | 2024-02-06 | 上海华为技术有限公司 | Energy saving method and related device |
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