CN103118424A - Long term evolution (LTE) uplink power control method and control system based on interference consciousness - Google Patents

Long term evolution (LTE) uplink power control method and control system based on interference consciousness Download PDF

Info

Publication number
CN103118424A
CN103118424A CN2013100271954A CN201310027195A CN103118424A CN 103118424 A CN103118424 A CN 103118424A CN 2013100271954 A CN2013100271954 A CN 2013100271954A CN 201310027195 A CN201310027195 A CN 201310027195A CN 103118424 A CN103118424 A CN 103118424A
Authority
CN
China
Prior art keywords
user terminal
base station
path loss
value
interference
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2013100271954A
Other languages
Chinese (zh)
Other versions
CN103118424B (en
Inventor
冯慧斌
翁鲲鹏
余根坚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuchun Polytron Technologies Inc
Original Assignee
FUCHUN COMMUNICATION Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FUCHUN COMMUNICATION Co Ltd filed Critical FUCHUN COMMUNICATION Co Ltd
Priority to CN201310027195.4A priority Critical patent/CN103118424B/en
Publication of CN103118424A publication Critical patent/CN103118424A/en
Application granted granted Critical
Publication of CN103118424B publication Critical patent/CN103118424B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y02B60/50—

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a long term evolution (LTE) uplink power control method and a control system based on interference consciousness. Through measurement of the difference between path loss from a user terminal I to a serving cell K of the user terminal I and path loss from the user terminal I to an adjacent cell base station J, and through information exchange of high-layer interference indicators, if signal interference occurs when interference indication information is exchanged among cell base stations is judged. The user terminals I in cells are divided into a type G1 and a type G2, different cell path loss compensating factors alpha are distributed according to user categories, interference identifiers and user path loss among the cells are combined to control and adjust emission power of the users, and interferences on uplinks in the cells around an LTE system are lowered. The method and the system are achieved on the basis of a power control method established by the third generation partnership project (3GPP) standard, an existing signalling protocol and a power control process of the LTE system do not need to be changed, and good compatibility is achieved.

Description

A kind of LTE uplink power control method and system based on disturbing consciousness
Technical field
The invention belongs to communication technical field, relate in particular to a kind of LTE uplink power control method based on disturbing consciousness.
Background technology
The main target of Poewr control method and system is exactly on the signal to noise ratio basis of satisfying Personal Communications Services required service quality requirement in the wireless communication system, reduce as far as possible the interference to user in the residential quarter and neighbor cell, improve travelling carriage energy service efficiency, prolong the service time of travelling carriage battery.
Application number is that the Chinese patent of CN200910049850.X discloses a kind of TD-LTE system power control method, its core technology is that the method utilizes the channel reciprocity of TD-LTE system uplink downlink, the user predicts that by the down channel of estimating neighbor base station its up link is to the uplink interference of respective cell, on the basis of interference prediction, the transmitting power that the user can active adjustment oneself is to reduce the interference to adjacent cell.This invention need not to change existing power control flow and signaling, has good compatibility, can effectively reduce the presence of intercell interference level, improves Cell Edge User throughput and throughput of system.This technical scheme is on cell uplink disturbs the basis, and the user regulates transmitting power and reduces interference to adjacent cell.It will be to affect the most key factor of Algorithm Performance index that the size of interference threshold value is set.Excessive threshold settings will cause neighbor cell to suffer strong area interference, too small threshold value will cause the required signal to noise ratio of telex network to can not get ensureing, different threshold settings under the different network environments also will cause the performance of scheme fully different, therefore threshold value is selected very difficult, and algorithm utilizes the channel response of down link and path loss to substitute value corresponding to up link, in fact predict the computation complexity that can strengthen algorithm because the actual value of the inconsistent uplink downlink of environment exists difference, and to neighbor cell interference.
Application number is that the Chinese patent of CN201110178285.4 discloses the power distribution method of simplifying in a kind of TD-LTE system, its core technology is to use ascending pilot frequency information estimator up channel, and the uplink channel information of estimating is used for calculating to the descending power distribution coefficient; To each symbol of OFDM symbol, carry out descending by the mould value of sub-carrier channels coefficient, the channel after arranging is h '; Power P C is blocked in setting, selects front M subcarrier of h ' mould value maximum to carry out the linear power distribution, and all the other subcarriers do not distribute power.This invention has reduced the number of carrying out the subcarrier of power division, and the iterative computation of traditional waterflood algorithm has been modified into linear operation, has reduced design cost and complexity.This technical scheme, utilize ascending pilot frequency information estimator up channel, the uplink channel information of estimating is used for the power of down link is carried out optimum allocation, what this algorithm was considered is LTE system down link power distribution method, and algorithm is owing to distribute according to channel coefficients, will cause the power division between the user to lack fairness, therefore also not exclusively be adapted to the power control of up link.
Can draw from present existing LTE up-link power control program and 3GPP standard, the transmission power of mobile station control in the residential quarter is just considered in the up link control that the 3GPP standard proposes, the power control scheme of uncommon consideration minizone and power control are on the impact of presence of intercell interference, and existing LTE up-link power control program exists threshold value and selects many weak points such as difficulty and fairness distribution.
Summary of the invention
Problem to be solved by this invention is to utilize the HII(High Interference Indicator between neighbor cell in the LTE system up-link) associate features such as path loss of user terminal to base station in message and the residential quarter, uplink users in the residential quarter is divided into strong jamming and weak jamming two large user's classifications, distribute different residential quarter path loss compensating factor α according to class of subscriber, the transmitting power that the presence of intercell interference identifier that obtains by the X2 interface clearing house and user's path loss jointly control and regulate the user reduces the interference of up link between LTE system small area.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme, and a kind of LTE uplink power control method based on disturbing consciousness is provided, and comprises the steps:
S100: according to the path loss of user terminal down link, the base station in service sector k of measuring and calculating user terminal is to a plurality of neighbor cell base station j uplink pathloss and usefulness
Figure BDA00002772966600021
Expression, the measuring and calculating user terminal is to path loss and the usefulness of its base station in service sector k
Figure BDA00002772966600022
Expression;
S200: the measuring and calculating user terminal is to the path loss of its base station in service sector k
Figure BDA00002772966600023
With neighbor cell base station j path loss
Figure BDA00002772966600024
Between poor, choose wherein minimum value, and described minimum value be labeled as Namely MDPL ki j = min | PL ki k - PL ki j | ( j ≠ k ) ;
S300: base station in service sector k and neighbor cell base station j exchange interference indication message, comprise the high-rise designator H(j that disturbs in the described interference indication message, i), whether its value causes interference to determine to neighbor cell base station j by user terminal i, if then representing it is easily to disturb its value to be labeled as H(j to adjacent cell base station j, otherwise H (j, i)=0 i)=1;
S400: according to minimum value
Figure BDA00002772966600027
The value of middle i and j, and the i of correspondence and j value searched high-rise designator H(j, the i of disturbing) whether value equals 1, if then corresponding user terminal is divided into type G2, otherwise the user terminal of correspondence is divided into type G1;
S500: the district's path loss compensating factor α assignment to the user terminal of type G1 is α 1, the residential quarter path loss compensating factor assignment of the user terminal of type G2 is α 2, α wherein 1Be the value of stipulating in the 3GPP standard, α 2Value less than α 1
S600: use the α that sets 1And α 2Value is carried out power control according to LTE open-loop uplink power control method in the 3GPP standard, and wherein, described LTE open-loop uplink power control method is: p=min{P Max, P 0+ 10*log 10 M+ α * PL+ Δ mcs+ δ }.
Wherein, described residential quarter its value of path loss compensating factor is 0 or [0.4:0.1:1].
Wherein, the user terminal of required measuring and calculating only comprises six cellular cells with the Serving cell direct neighbor of user terminal to neighbor cell base station j uplink pathloss, i.e. described j=1,2,3 ... 6.
Wherein, described high-rise designator H(j, the i of disturbing) by the exchange interference indication message carrying that regularly sends between the cell base station, it is transmitted by X2 interface.
In order to solve the problems of the technologies described above, the present invention also provides a kind of LTE up-link power control system based on disturbing consciousness, comprises a base station in service sector k, a plurality of neighbor cell base station j adjacent with base station in service sector k and user terminal i;
Described user terminal comprises predicting unit, computing unit and Transmit-Receive Unit, and described base station in service sector k comprises interference indication message crosspoint, user terminal taxon, memory cell and power compensating unit;
Described predicting unit is used for the path loss according to down link, and the measuring and calculating user terminal is to path loss and the usefulness of its base station in service sector K
Figure BDA00002772966600031
Expression, and the measuring and calculating user terminal is to path loss and the usefulness of neighbor cell base station j
Figure BDA00002772966600032
Expression;
Described computing unit is used for calculating described user terminal to the path loss of its base station in service sector k
Figure BDA00002772966600033
Arrive neighbor cell base station j path loss with described user terminal
Figure BDA00002772966600034
Between difference, choose the middle minimum value in institute's calculated difference, and described minimum value be labeled as
Figure BDA00002772966600035
Namely
Described Transmit-Receive Unit is used for the minimum value of computing unit mark
Figure BDA00002772966600037
The time j and i send to base station in service sector k;
Described interference indication message crosspoint is used for sending the area interference indicator message to the interference indication message of adjacent base station and reception of neighboring cell base station j transmission, wherein, comprises high-rise designator H(j, the i of disturbing in the described interference indication message); Whether its value causes interference to determine to neighbor cell base station j by user terminal i; If, mark H(j, i then)=1, otherwise mark H(j, i)=0, described interference indication message crosspoint also is used for disturbing designator H(j, i) value be stored in the described memory cell;
Described user terminal taxon is used for according to the i and the j value that receive, i and the j value of correspondence are searched the described high-rise designator H(j that disturbs, i) whether equal 1, as the described high-rise designator H(j that disturbs, o'clock i)=1, corresponding user terminal is divided into type G2, and is used for as the described high-rise designator H(j that disturbs, i)=0 o'clock, corresponding user terminal is divided into type G1;
The residential quarter path loss compensating factor assignment that described power compensating unit is used for the user terminal of type G2 is α 2, and be α to the residential quarter path loss compensating factor α assignment of the user terminal of type G1 1, described power compensating unit also is used for using the α that sets according to 3GPP standard LTE open-loop uplink power control method 1And α 2Value is carried out power control, wherein, and α 1Be the value of stipulating in the 3GPP standard, α 2Value less than α 1, described LTE open-loop uplink power control method p=min{P Max, P 0+ 10*log 10 M+ α * PL+ Δ mcs+ δ }.
Wherein, base station in service sector k, neighbor cell base station j a plurality of and that base station in service sector is adjacent form the shape of honeycomb type.
Wherein, the interference indication message crosspoint of described base station in service sector k and described a plurality of neighbor cell base station j exchange periodically interference indication message by X2 interface.
The invention has the beneficial effects as follows: the present invention is by the path loss of measuring and calculating user terminal i to its base station in service sector k
Figure BDA00002772966600041
Arrive its neighbor cell base station j path loss with user terminal i
Figure BDA00002772966600042
Between poor, choose minimum value wherein, and disturb designator to unite by high level and judge whether user terminal disturbs each cell base station, user terminal is categorized as two types of G1 and G2, the type of dividing according to user terminal is respectively to the residential quarter path loss compensating factor assignment α of G1 and two types of user terminal i of G2 1And α 2, because uplink users terminal i corresponding to G1 only can cause minimum interference even not produce interference to neighbor cell, so α 1Value come assignment according to prescribed manner in the 3GPP standard, and uplink users terminal i corresponding to G2 can cause strong jamming to neighbor cell, so α 2Value for being slightly less than α 1A suitable value, thereby completing user terminal type classification and path loss parameter setting, assignment is according to expression formula:
α=α 1（user∈G1）
α=α 2（user∈G2）
According to the α that sets 1And α 2Be worth, set again other power contorl parameters of community user terminal i, carry out power control according to the LTE open-loop uplink power control method in the 3GPP standard.
Considering the power control of user-terminal up-link, on the strong and weak basis of presence of intercell interference, user terminal is classified, be type G1 and type G2 according to the class of subscriber class, different residential quarter path loss compensating factor α carries out power control, on the basis of satisfying the subscriber terminal service quality, can effectively reduce the interference of up link between LTE system small area, improve the practical efficient of user terminal energy.Thereby the transmitting power of user terminal i up link all is to carry out the adjusting of power according to Optimal Setting path loss parameter on the basis of user terminal presence of intercell interference power, simultaneity factor can at the basic enterprising one-step optimization power contorl parameters of advancing of existing power control scheme, improve validity and the real-time of power control scheme.
Description of drawings
Figure 1 shows that a kind of LTE uplink power control method flow chart based on disturbing consciousness of the present invention;
Figure 2 shows that a kind of LTE uplink power control method outline flowchart based on disturbing consciousness of the present invention;
Shown in Figure 3 is that user terminal of the present invention is to cell base station uplink pathloss instrumentation plan;
Shown in Figure 4 is LTE uplink presence of intercell interference schematic diagram of the present invention;
Shown in Figure 5 is the high-rise designator HII schematic diagram that disturbs in minizone of the present invention;
The present invention of being shown in Figure 6 proposes between the power control scheme in power control scheme and the 3GPP standard Performance Ratio than sample network topology figure.
Embodiment
By describing technology contents of the present invention, structural feature in detail, realized purpose and effect, below in conjunction with execution mode and cooperate that accompanying drawing is detailed to give explanation.
A kind of LTE uplink power control method based on disturbing consciousness of present embodiment, LTE is the 4th leading third-generation mobile communication technical standard of 3GPP, LTE comprises FDD-LTE and TD-LTE, power control is the key technology of LET system physical layer, the target of LTE system up-link power control is to satisfy on the required signal-to-noise ratio basis of QoS of customer, reduces the interference to neighbor cell as far as possible.
The present invention utilizes the up link HII between neighbor cell base station and user in the LTE system to be foundation to the path loss characteristics of cell base station, uplink users in the cellular cell is divided into strong jamming and weak jamming two large user's classifications, distribute different residential quarter path loss compensating factor α according to class of subscriber, carry out power control according to different path loss compensating factors, on the basis of satisfying the subscriber terminal service quality, effectively reduce uplink channel interference between LTE system small area, consult Fig. 1, the specific implementation step of present embodiment is as follows:
S100: according to the path loss of user terminal down link, measuring and calculating user terminal i is to a plurality of neighbor cell base station j uplink pathloss and usefulness
Figure BDA00002772966600061
Expression, measuring and calculating user terminal i is to path loss and the usefulness of its base station in service sector k
Figure BDA00002772966600062
Expression; Concrete, consult shown in Figure 3ly, CELL0 to CELL6 is cell base station among the figure, and CELL0 is user terminal UE 0i 0Base station in service sector k, CELL1 to CELL6 is its neighbor cell base station j.
S200: the measuring and calculating user terminal is to the path loss of its base station in service sector k
Figure BDA00002772966600063
Arrive its neighbor cell base station j path loss with user terminal
Figure BDA00002772966600064
Between poor, choose wherein minimum value, and described minimum value be labeled as
Figure BDA00002772966600065
Namely
Figure BDA00002772966600066
Path loss
Figure BDA00002772966600067
With Be worth more closely, representative may be larger to the interference power that this neighbor cell base station j produces.
S300: base station in service sector k and neighbor cell base station j exchange interference indication message, comprise the high-rise designator H(j that disturbs in the described interference indication message, i), whether its value causes interference to determine to neighbor cell base station j by user terminal i, if then representing it is that its value of easily disturbing is labeled as H(j to adjacent cell j, otherwise H (j, i)=0 i)=1;
S400: according to minimum value
Figure BDA00002772966600069
The value of middle i and j, and the i of correspondence and j value searched high-rise designator H(j, the i of disturbing) whether value equals 1, if then corresponding user terminal is divided into type G2, otherwise the user terminal of correspondence is divided into type G1; Definite division is corresponding
Figure BDA000027729666000610
Other adjacent cells that residential quarter j is outer
Figure BDA000027729666000611
Value means that its interference to adjacent cells is less or does not produce interference that value is not null's for null
Figure BDA000027729666000612
The user terminal that means Serving cell may cause larger presence of intercell interference to the neighbor cell j of correspondence, and the basis for estimation of this process is:
Figure BDA000027729666000613
Figure BDA000027729666000614
S500: the district's path loss compensating factor α assignment to the user terminal of type G1 is α 1, the residential quarter path loss compensating factor assignment of the user terminal of type G2 is α 2, α wherein 1Be the value of stipulating in the 3GPP standard, its value is 0 or [0.4:0.1:1], α 2Value be slightly less than α 1
S600: use the α that sets 1And α 2Value is carried out power control according to LTE open-loop uplink power control method in the 3GPP standard, and wherein, described LTE open-loop uplink power control method is: p=min{P Max, P 0+ 10*log 10 M+ α * PL+ Δ mcs+ δ }.
Parameter P wherein MaxThe maximum transmission power of expression travelling carriage depends on the type of travelling carriage;
P 0Expression community user power bias, it is comprised of cell-specific parameters and user's special parameter two parts,
Span is [124dbm, P Max], by regulating P 0Can control the signal to noise ratio target of receiving terminal;
M is the Radio Resource number of blocks of distributing to mobile station terminal;
PL is that travelling carriage is according to the path loss of downlink estimation;
Δ mcs is correction factor, and its value depends on user's modulating-coding pattern;
δ is the specific correction parameter of user, and it comes the optimization system performance by regulating user emission power.
α is the path loss compensating factor of residential quarter, and described residential quarter its value of path loss compensating factor is 0 or [0.4:0.1:1].
The improvement of above-mentioned execution mode has, and the user terminal of required measuring and calculating only comprises six cellular cells with the Serving cell direct neighbor of user terminal to neighbor cell base station j path loss, i.e. described j=1,2,36.Ignore the cell uplink path loss of indirect neighbor and measure, and it is to estimate to obtain on the basis of uplink downlink path loss.
One preferred embodiment in, described high-rise designator H(j, the i of disturbing) by the exchange interference indication message carrying that regularly sends between the cell base station, it is transmitted by X2 interface.
In the above-mentioned execution mode, concrete can be divided into four-stage, comprising: user-terminal up-link path loss measurements and calculations stage, the high-rise interference indication message transfer phase in minizone, the user terminal sorting phase of Serving cell, user terminal set path loss parameter alpha are carried out the power adjusting stage.Consult Fig. 2, the process of concrete stages is as follows:
One, the user-terminal up-link path loss measurements and calculations stage
For the cellular network architecture of LTE system, consider the structural representation of base station in service sector and neighbor cell base station, as shown in Figure 3, show among the figure that user terminal measurement and estimating user terminal are used to the path loss of the up link of base station in service sector
Figure BDA00002772966600071
Represent that user terminal is used respectively to the path loss of neighbor cell base station PL 0 i 1 , PL 0 i 2 , PL 0 i 3 , PL 0 i 4 , PL 0 i 5 , PL 0 i 6 ( j = 1,2,3,4,5,6 ) Represent.
Calculate respectively user terminal to the uplink pathloss of base station in service sector
Figure BDA00002772966600073
Arrive neighbor cell base station j(j=1,2 with user terminal ... 6) up link road path loss PL 0 i 1 , PL 0 i 2 , PL 0 i 3 , PL 0 i 4 , PL 0 i 5 , PL 0 i 6 ( j = 1,2,3,4,5,6 ) Between absolute difference, calculation expression is | PL ki k - PL ki j | ( k = 0 , j = 1 . . . 6 ) And use variable
Figure BDA00002772966600082
Represent.
According to required and the absolute value difference of neighbor cell base station
Figure BDA00002772966600083
And try to achieve the minimum absolute value difference of path loss (j is a particular value among the 1-6), definite division is corresponding Other neighbor cell that residential quarter j is outer
Figure BDA00002772966600086
Value is null, and value is not null's
Figure BDA00002772966600087
Mean that the user terminal that is positioned at Serving cell may cause larger presence of intercell interference to the neighbor cell j base station of correspondence.
Second stage: the high-rise interference indication message transfer phase in each minizone
Base station in service sector is by the base station exchange interference indication message of X2 interface and neighbor cell, LTE cellular network uplink inter-cell interference schematic diagram as shown in Figure 3, dotted line represents the transmission of interference indication message among the figure, as can be seen from Figure 4 user terminal UE3, the UE4 of center of housing estate only can cause weak jamming to adjacent six residential quarters, and user terminal UE1, the UE2 of cell edge region, UE5, UE6 can cause strong jamming to adjacent six residential quarters.
The above-mentioned presence of intercell interference available interference identifier H (j that causes, i) represent, the high level that the represented base station in service sector of Fig. 5 receives disturbs designator can use the matrix notation of 6*6, H (j wherein, i) the interference identifier that physical radio resource piece i causes neighbor cell j is used in expression, and user terminal distributes physics wireless resource block i to cause strong jamming then to make the corresponding designator H (j, i) of interference=1 expression to neighbor cell j, otherwise H (j, i)=0.According to above-mentioned interference designator definition, can get the interference message matrix of minizone as shown in Figure 5, as can be seen from Fig. owing to user terminal UE1, UE2, UE5, UE6 may cause strong jamming to adjacent six residential quarters, so corresponding H (j, i)=1(j=1,2 ... 6, i=1,2,5,6), and corresponding H (j, i)=0 (j=1,2 ... 6, i=3,4).Above-mentioned interference message matrix H is by X2 interface and neighbor cell exchange, thus interference indication message between the acquisition neighbor cell base station.
Phase III: the user terminal sorting phase of Serving cell
According to phase I calculating gained
Figure BDA00002772966600088
Get respectively i in its corresponding subscript and the subscript and the value of j, and search the high-rise H (j in the designator matrix that disturbs with the i of correspondence and j value, i) whether value equals 1, if it is corresponding user terminal is divided into type G2, its corresponding uplink users can cause strong jamming to neighbor cell, if otherwise corresponding user terminal were divided into type G1, its corresponding uplink users only could cause weak jamming to neighbor cell.The process of calculating can represent lower:
Figure BDA00002772966600089
Figure BDA000027729666000810
The quadravalence section: user terminal carries out the power adjusting stage according to classification set path loss parameter alpha
The type of dividing according to user terminal is respectively to G1 and two types of users' of G2 residential quarter path loss compensating factor assignment α 1And α 2, because uplink users corresponding to G1 only can cause weak jamming to neighbor cell, so α 1Value come assignment according to prescribed manner in the 3GPP standard, and uplink users corresponding to G2 can cause strong jamming to neighbor cell, so α 2Value for being slightly less than α 1A suitable value, thereby completing user terminal type classification and path loss parameter setting, assignment according to expression formula is:
α=a1(user∈G1)
α=a2(user∈G2)
According to the α that sets 1And α 2Value, again according to existing power contorl parameters, carry out power control according to the LTE open-loop uplink power control method in the 3GPP standard.
Technical scheme of the present invention, in the power control of considering user-terminal up-link presence of intercell interference is classified to user terminal on the strong and weak basis, distribute respectively different residential quarter path loss compensating factor α according to class of subscriber, carry out power control according to different path loss compensating factor α, on the basis of satisfying the subscriber terminal service quality, can effectively reduce the interference of up link between LTE system small area, improve user terminal energy service efficiency.With as shown in Figure 6 network result validity of the present invention is described, according to above-mentioned analytic process, if do not consider the interference of minizone, if according to the 3GPP standard code residential quarter path loss compensating factor of user terminal UE in the Serving cell is made as identical value, terminal UE J is owing to be in center of housing estate, therefore can not cause strong jamming to neighbor cell, and UEI is owing to be in cell edge, then can cause neighbor cell is caused strong jamming, the dotted line shown in the figure represents that namely UEI is to the interference of neighbor cell base station.And the method that adopts the present invention to propose, then can be divided into user terminal UEI and UEJ dissimilar and distribute different path loss compensating factors, path loss compensating factor to UEI is set by the 3GPP standard code, UEI is then distributed a path loss compensating factor that is slightly less than UEJ, on the basis of satisfying the subscriber terminal service quality, can effectively reduce the interference of up link between LTE system small area.
The present invention, up link HI I(High Interference Indicator in the comprehensive utilization LTE system between neighbor cell base station) and user terminal determine to two parameters of path loss of base station in service sector whether the user can really cause presence of intercell interference, and exchange the transmit power parameter that above-mentioned presence of intercell interference identifier information and measuring and calculating user path loss are regulated user terminal by X2 interface, relation by common consideration and calculating path loss and presence of intercell interference identifier is divided into strong jamming and weak jamming two large user's classifications to the uplink users in the service cellular cell, and distribute respectively different residential quarter path loss compensating factor α to carry out power control according to class of subscriber, avoided the improper and presence of intercell interference forecasting inaccuracy of the setting of interference threshold value really to affect the Poewr control method performance.
In addition, the present invention proposes based on the up-link power control program of disturbing consciousness on the basis of 3GPP open-loop uplink power control scheme, the scheme that proposes be adapted to the LTE system up link power control and can effectively reduce the interference of minizone, need not to change existing signaling protocol and the power control flow of LTE system, has good compatibility, be effectively replenishing of LTE system up-link power control scheme, and can effectively avoid power control scheme need to carry out complicated calculating and and cause power division unjustness between the user.
The present invention also discloses a kind of LTE up-link power control system based on disturbing consciousness, comprises a base station in service sector k, a plurality of neighbor cell base station j adjacent with base station in service sector k and user terminal i; Base station in service sector k, neighbor cell base station j a plurality of and that base station in service sector is adjacent form the shape of honeycomb type.
Described user terminal comprises predicting unit, computing unit and Transmit-Receive Unit, and described base station in service sector k comprises interference indication message crosspoint, user terminal taxon, memory cell and power compensating unit;
Described predicting unit is used for the path loss according to down link, and the measuring and calculating user terminal is to path loss and the usefulness of its base station in service sector K
Figure BDA00002772966600101
Expression, and the measuring and calculating user terminal is to path loss and the usefulness of neighbor cell base station j
Figure BDA00002772966600102
Expression;
Described computing unit is used for calculating described user terminal to the path loss of its base station in service sector k
Figure BDA00002772966600103
Arrive neighbor cell base station j path loss with described user terminal
Figure BDA00002772966600104
Between difference, choose the middle minimum value in institute's calculated difference, and described minimum value be labeled as
Figure BDA00002772966600105
Namely
Figure BDA00002772966600106
Described Transmit-Receive Unit is used for the minimum value of computing unit mark
Figure BDA00002772966600107
The time j and i send to base station in service sector k; The interference indication message crosspoint of described base station in service sector k and described a plurality of neighbor cell base station j exchange periodically interference indication message by X2 interface.
Described interference indication message crosspoint is used for generating interference indication message and exchanging interference indication message with neighbor cell base station j according to the j that receives and i, wherein, comprises high-rise designator H(j, the i of disturbing in the described interference indication message); Whether its value causes interference to determine to neighbor cell base station j by user terminal i; If, mark H(j, i then)=1, otherwise mark H(j, i)=0, described interference indication message crosspoint also is used for disturbing designator H(j, i) value be stored in the described memory cell;
Described user terminal taxon is used for according to the i and the j value that receive, i and the j value of correspondence are searched the described high-rise designator H(j that disturbs, i) whether equal 1, as the described high-rise designator H(j that disturbs, o'clock i)=1, corresponding user terminal is divided into type G2, and is used for as the described high-rise designator H(j that disturbs, i)=0 o'clock, corresponding user terminal is divided into type G1;
The residential quarter path loss compensating factor assignment that described power compensating unit is used for the user terminal of type G2 is α 2, and be α to the residential quarter path loss compensating factor α assignment of the user terminal of type G1 1, described power compensating unit also is used for using the α that sets according to 3GPP standard LTE open-loop uplink power control method 1And α 2Value is carried out power control, wherein, and α 1Be the value of stipulating in the 3GPP standard, α 2Value less than α 1, described LTE open-loop uplink power control method p=min{P Max, P 0+ 10*log 10 M+ α * PL+ Δ mcs+ δ }.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.

Claims (6)

1. the LTE uplink power control method based on interference consciousness is characterized in that, comprises the steps:
S100: according to the path loss of user terminal i down link, measuring and calculating user terminal i is to a plurality of neighbor cell base station j uplink pathloss and usefulness
Figure FDA00002772966500011
Expression, measuring and calculating user terminal i is to path loss and the usefulness of its base station in service sector k Expression;
S200: measuring and calculating user terminal i is to the path loss of its base station in service sector k
Figure FDA00002772966500013
With neighbor cell base station j path loss
Figure FDA00002772966500014
Between poor, choose wherein minimum value, and described minimum value be labeled as
Figure FDA00002772966500015
Namely
Figure FDA00002772966500016
User terminal with minimum value is
Figure FDA00002772966500017
The time j and i send to base station in service sector k;
S300: base station in service sector k and neighbor cell base station j exchange interference indication message, comprise the high-rise designator H(j that disturbs in the described interference indication message, i), whether its value causes interference to determine to neighbor cell base station j by user terminal i, if then representing it is that its value of easily disturbing is labeled as H(j to adjacent cell j, otherwise H (j, i)=0 i)=1;
S400: according to minimum value
Figure FDA00002772966500018
The value of middle i and j, and the i of correspondence and j value searched high-rise designator H(j, the i of disturbing) whether value equals 1, if then corresponding user terminal is divided into type G2, otherwise the user terminal of correspondence is divided into type G1;
S500: the district's path loss compensating factor α assignment to the user terminal of type G1 is α 1, the residential quarter path loss compensating factor assignment of the user terminal of type G2 is α 2, α wherein 1Be the value of stipulating in the 3GPP standard, α 2Value less than α 1
S600: use the α that sets 1And α 2Value is carried out power control according to LTE open-loop uplink power control method in the 3GPP standard, and wherein, described LTE open-loop uplink power control method is: p=min{P Max, P 0+ 10*log 10 M+ α * PL+ Δ mcs+ δ }.
2. according to claim 1 based on disturbing the LTE uplink power control method of realizing, it is characterized in that:
The user terminal of required measuring and calculating only comprises six cellular cells with the Serving cell direct neighbor of user terminal to neighbor cell base station j uplink pathloss, i.e. described j=1,2,3 ... 6.
3. according to claim 1 based on disturbing the LTE uplink power control method of realizing, it is characterized in that:
Described high-rise designator H(j, the i of disturbing) by the exchange interference indication message carrying that regularly sends between the cell base station, it is transmitted by X2 interface.
4. the LTE up-link power control system based on interference consciousness is characterized in that: comprise a base station in service sector k, a plurality of neighbor cell base station j adjacent with base station in service sector k and user terminal i;
Described user terminal comprises predicting unit, computing unit and Transmit-Receive Unit, and described base station in service sector k comprises interference indication message crosspoint, signal Interference Detection unit, user terminal taxon, memory cell and power compensating unit;
Described predicting unit is used for the path loss according to down link, and the measuring and calculating user terminal is to path loss and the usefulness of its base station in service sector K
Figure FDA00002772966500021
Expression, and the measuring and calculating user terminal is to path loss and the usefulness of neighbor cell base station j
Figure FDA00002772966500022
Expression;
Described computing unit is used for calculating described user terminal to the path loss of its base station in service sector k Arrive neighbor cell base station j path loss with described user terminal
Figure FDA00002772966500024
Between difference, choose the middle minimum value in institute's calculated difference, and described minimum value be labeled as
Figure FDA00002772966500025
Namely
Figure FDA00002772966500026
Described Transmit-Receive Unit is used for the minimum value of computing unit mark
Figure FDA00002772966500027
The time j and i send to base station in service sector k;
Described interference indication message crosspoint is used for generating interference indication message and exchanging interference indication message with neighbor cell base station j according to the j that receives and i, wherein, comprises high-rise designator H(j, the i of disturbing in the described interference indication message); Whether its value causes interference to determine to neighbor cell base station j by user terminal i; If, mark H(j, i then)=1, otherwise mark H(j, i)=0, described interference indication message crosspoint also is used for disturbing designator H(j, i) value be stored in the described memory cell;
Described user terminal taxon is used for according to the i and the j value that receive, i and the j value of correspondence are searched the described high-rise designator H(j that disturbs, i) whether equal 1, as the described high-rise designator H(j that disturbs, o'clock i)=1, corresponding user terminal is divided into type G2, and is used for as the described high-rise designator H(j that disturbs, i)=0 o'clock, corresponding user terminal is divided into type G1;
The residential quarter path loss compensating factor assignment that described power compensating unit is used for the user terminal of type G2 is α 2, and be α to the residential quarter path loss compensating factor α assignment of the user terminal of type G1 1, described power compensating unit also is used for using the α that sets according to 3GPP standard LTE open-loop uplink power control method 1And α 2Value is carried out power control, wherein, and α 1Be the value of stipulating in the 3GPP standard, α 2Value less than α 1, described LTE open-loop uplink power control method p=min{P Max, P 0+ 10*log 10 M+ α * PL+ Δ mcs+ δ }.
5. according to claim 4 based on disturbing the LTE up-link power control system of realizing, it is characterized in that:
Base station in service sector k, neighbor cell base station j a plurality of and that base station in service sector is adjacent form the shape of honeycomb type.
6. according to claim 5 based on disturbing the LTE up-link power control system of realizing, it is characterized in that: the interference indication message crosspoint of described base station in service sector k and described a plurality of neighbor cell base station j exchange periodically interference indication message by X2 interface.
CN201310027195.4A 2013-01-24 2013-01-24 Long term evolution (LTE) uplink power control method and control system based on interference consciousness Active CN103118424B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310027195.4A CN103118424B (en) 2013-01-24 2013-01-24 Long term evolution (LTE) uplink power control method and control system based on interference consciousness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310027195.4A CN103118424B (en) 2013-01-24 2013-01-24 Long term evolution (LTE) uplink power control method and control system based on interference consciousness

Publications (2)

Publication Number Publication Date
CN103118424A true CN103118424A (en) 2013-05-22
CN103118424B CN103118424B (en) 2015-07-01

Family

ID=48416667

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310027195.4A Active CN103118424B (en) 2013-01-24 2013-01-24 Long term evolution (LTE) uplink power control method and control system based on interference consciousness

Country Status (1)

Country Link
CN (1) CN103118424B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104254121A (en) * 2013-06-28 2014-12-31 电信科学技术研究院 PUSCH (physical uplink shared channel) power control method and PUSCH power control device
CN104661296A (en) * 2013-11-25 2015-05-27 株式会社Ntt都科摩 Device and method for deciding transmission power of user device
CN105517115A (en) * 2014-09-26 2016-04-20 中兴通讯股份有限公司 Service base station determining method, service base station determining device, and base station
CN106899965A (en) * 2017-03-16 2017-06-27 北京佰才邦技术有限公司 The collocation method of transmit power, terminal, base station and baseband chip
CN109802733A (en) * 2017-11-17 2019-05-24 华为技术有限公司 The method and apparatus of signal measurement
CN109891982A (en) * 2016-10-28 2019-06-14 瑞典爱立信有限公司 Realize interference perception configuration and/or the AF panel of at least one transmission in cellular communication system
CN110139351A (en) * 2018-02-08 2019-08-16 中国移动通信有限公司研究院 A kind of Poewr control method and device, equipment, storage medium
CN111163488A (en) * 2018-11-07 2020-05-15 中国移动通信集团四川有限公司 Method, device and equipment for positioning cell interference source and computer storage medium
CN111937449A (en) * 2018-04-05 2020-11-13 瑞典爱立信有限公司 Air state dependent uplink power control related tasks for airborne UE
CN111937449B (en) * 2018-04-05 2024-05-28 瑞典爱立信有限公司 Method and device for controlling uplink power of aviation UE depending on air state

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011018557A2 (en) * 2009-08-14 2011-02-17 Nokia Corporation Method and apparatus for managing interference handling overhead
US20110045856A1 (en) * 2009-08-19 2011-02-24 Minghai Feng Inter-cell interference coordination method and base station
CN101986752A (en) * 2010-11-04 2011-03-16 杭州市电信规划设计院有限公司 Control method of uplink power of long term evolution (LTE) system
CN102056178A (en) * 2011-01-17 2011-05-11 新邮通信设备有限公司 Interference coordination method among cells and evolved NodeB (eNB)

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011018557A2 (en) * 2009-08-14 2011-02-17 Nokia Corporation Method and apparatus for managing interference handling overhead
WO2011018557A3 (en) * 2009-08-14 2011-04-14 Nokia Corporation Method and apparatus for managing interference handling overhead
US20110045856A1 (en) * 2009-08-19 2011-02-24 Minghai Feng Inter-cell interference coordination method and base station
CN101986752A (en) * 2010-11-04 2011-03-16 杭州市电信规划设计院有限公司 Control method of uplink power of long term evolution (LTE) system
CN102056178A (en) * 2011-01-17 2011-05-11 新邮通信设备有限公司 Interference coordination method among cells and evolved NodeB (eNB)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104254121A (en) * 2013-06-28 2014-12-31 电信科学技术研究院 PUSCH (physical uplink shared channel) power control method and PUSCH power control device
US9918281B2 (en) 2013-06-28 2018-03-13 China Academy Of Telecommunications Technology Physical uplink shared channel power control method and apparatus that carry out power control in accordance with adjacent cell interference
CN104254121B (en) * 2013-06-28 2018-05-29 电信科学技术研究院 A kind of PUSCH Poewr control methods and device
CN104661296B (en) * 2013-11-25 2019-06-11 株式会社Ntt都科摩 The device and method for determining the transmission power of user equipment
CN104661296A (en) * 2013-11-25 2015-05-27 株式会社Ntt都科摩 Device and method for deciding transmission power of user device
CN105517115A (en) * 2014-09-26 2016-04-20 中兴通讯股份有限公司 Service base station determining method, service base station determining device, and base station
CN109891982A (en) * 2016-10-28 2019-06-14 瑞典爱立信有限公司 Realize interference perception configuration and/or the AF panel of at least one transmission in cellular communication system
CN106899965A (en) * 2017-03-16 2017-06-27 北京佰才邦技术有限公司 The collocation method of transmit power, terminal, base station and baseband chip
WO2018166439A1 (en) * 2017-03-16 2018-09-20 北京佰才邦技术有限公司 Transmission power configuration method, terminal, base station, and baseband chip
CN109802733A (en) * 2017-11-17 2019-05-24 华为技术有限公司 The method and apparatus of signal measurement
CN109802733B (en) * 2017-11-17 2022-06-10 华为技术有限公司 Method and apparatus for signal measurement
CN110139351A (en) * 2018-02-08 2019-08-16 中国移动通信有限公司研究院 A kind of Poewr control method and device, equipment, storage medium
CN111937449A (en) * 2018-04-05 2020-11-13 瑞典爱立信有限公司 Air state dependent uplink power control related tasks for airborne UE
CN111937449B (en) * 2018-04-05 2024-05-28 瑞典爱立信有限公司 Method and device for controlling uplink power of aviation UE depending on air state
CN111163488A (en) * 2018-11-07 2020-05-15 中国移动通信集团四川有限公司 Method, device and equipment for positioning cell interference source and computer storage medium

Also Published As

Publication number Publication date
CN103118424B (en) 2015-07-01

Similar Documents

Publication Publication Date Title
CN103118424B (en) Long term evolution (LTE) uplink power control method and control system based on interference consciousness
Zhang et al. Energy-efficient resource allocation in NOMA heterogeneous networks
CN103929781B (en) Cross-layer interference coordination optimization method in super dense heterogeneous network
CN102791002B (en) Based on the resource allocation methods of efficiency in LTE network
CN102014393B (en) Frequency allocation method for multi-point coordinated transmission in cellular communication system
CN103650571A (en) Performing measurements in a digital cellular wireless telecommunication network
EP3185435B1 (en) Multi-cell beamforming method and device
CN103281786B (en) The method for optimizing resources of a kind of Home eNodeB double-layer network based on energy efficiency
CN102612149A (en) Wireless resource distribution method for relay cell, base station and system
US10271242B2 (en) Method and apparatus for traffic load balancing in mobile communication system
CN102215492B (en) User-feedback-based multi-cell resource allocation method
CN101888637A (en) Multi-slot cooperative communication method for multiple base stations
Khan et al. Unsupervised clustering for 5G network planning assisted by real data
CN103139800A (en) Node adjustment method, device and system of relay cellular network
CN102104964B (en) Method and system for coordinating and scheduling frequency band resources in cellular network
CN101998605B (en) Method for controlling uplink transmission power
CN103199973A (en) Method and device of multipoint cooperation dispatch
Zhang et al. Congestion-aware user-centric cooperative base station selection in ultra-dense networks
US9924475B2 (en) Method for managing data transmission power in mobile cellular networks
Li et al. An optimal wireless resource allocation of machine-type communications in the 5g network for situation awareness of active distribution network
Fu et al. An energy efficiency evaluation framework for radio access networks
CN102340805B (en) Interference information balancing method and system for coordinating interference among communities
Lv et al. A distributed power allocation algorithm with inter-cell interference coordination for multi-cell OFDMA systems
CN103687026A (en) Control method for uplink resources in LTE network
Xu et al. On energy efficient design for dynamic CoMP transmission in K-tier heterogeneous cellular networks

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CP01 Change in the name or title of a patent holder

Address after: C District No. 89 Copper Road Software Avenue Gulou District of Fuzhou city in Fujian province 350003 Building No. 25

Patentee after: Fuchun Polytron Technologies Inc

Address before: C District No. 89 Copper Road Software Avenue Gulou District of Fuzhou city in Fujian province 350003 Building No. 25

Patentee before: Fuchun Communication Co., Ltd.

CP01 Change in the name or title of a patent holder