CN104038455B - A kind of disturbance restraining method and device of ascending control channel - Google Patents
A kind of disturbance restraining method and device of ascending control channel Download PDFInfo
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- CN104038455B CN104038455B CN201310075563.2A CN201310075563A CN104038455B CN 104038455 B CN104038455 B CN 104038455B CN 201310075563 A CN201310075563 A CN 201310075563A CN 104038455 B CN104038455 B CN 104038455B
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Abstract
The present invention relates to wireless communication technology field, more particularly to a kind of disturbance restraining method and device of ascending control channel, there is the interference of ascending control channel co-frequency neighbor cell to solve LTE network in prior art, easily cause the higher problem of user's access failure rate or cutting off rate.Interference signal of the present invention according to the ascending control channel parameter determination adjacent cell of the user equipment for producing interference in adjacent cell to this cell, and the interference signal of eat dishes without rice or wine signal and the adjacent cell according to this cell, determine that this cell eliminates the signal of alternatively eating dishes without rice or wine of the adjacent cell interference；From all signals of alternatively eating dishes without rice or wine, select a signal of alternatively eating dishes without rice or wine that the signal of eating dishes without rice or wine after interference is eliminated as this cell, reduce the interference of ascending control channel co-frequency neighbor cell in LTE network, the interference source of adjacent cell is determined accurately, improve the success rate of user access network, it is ensured that the speech quality of user.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of disturbance restraining method and dress of ascending control channel
Put.
Background technology
TD-LTE（Long Term Evolution, timesharing Long Term Evolution）Networking include identical networking and inter-frequency networking
Two ways, for identical networking, all cells in whole system coverage can be this cell using identical frequency band
Interior user provides service, therefore spectrum efficiency is high.
But identical networking technology has to the orthogonality between each subchannel in strict requirements, i.e. TD-LTE system and owns
Cell between must be Time and Frequency Synchronization, must also be Time and Frequency Synchronization between base station and user in cell, can otherwise cause
Interference.But actually user and base station existence time and frequency do not have the problem of stringent synchronization, this can the bottom of lifting this cell make an uproar；
When this cell is subject to the larger interference of ratio of the user of co-frequency neighbor cell, the bottom level of making an uproar of this cell can obvious lifting, to
Cell causes to substantially interfere with, especially to PUCCH（Physical Uplink Control Channel, the control of physical uplink link
Channel）Produce considerable influence.
In current correlation technique, when needing to carry out the multi-subscriber dispatching of PUCCH, according to predetermined for sending
The RB of PUCCH（Resource Block, Resource Block）Number, needs the number of users of scheduling with reference to the time slot, according to code after first frequency division
The principle divided carries out resource allocation.If number of users is more, when needs send the PUCCH of multiple UE on a RB, and for
Multiple UE of PUCCH message are sent on same RB（User Equipment, user equipment）, due to the difference of frequency deviation, will
Cause the ICI of multiple users（Inter-carrier interference, inter-carrier interference）And MAI（Multiple Access
Interference, multi-access inference）；For multiple UE that PUCCH is sent in adjacent R B, due to the difference of frequency deviation, also cause
MAI。
Therefore, there is the interference of ascending control channel co-frequency neighbor cell in prior art in LTE network, easily cause network signal
User's access failure rate or cutting off rate higher problem when good.
The content of the invention
The embodiment of the present invention provides a kind of disturbance restraining method and device of ascending control channel, to solve in prior art
There is the interference of ascending control channel co-frequency neighbor cell in LTE network, easily cause user's access failure rate or cutting off rate is higher asks
Topic.
A kind of disturbance restraining method of ascending control channel is embodiments provided, the method includes：
For each adjacent cell, the respectively up control according to the user equipment for producing interference in the adjacent cell to this cell
Channel parameter processed determines the interference signal of the adjacent cell, and the interference letter of eat dishes without rice or wine signal and the adjacent cell according to this cell
Number, it is determined that alternatively eat dishes without rice or wine signal of the adjacent cell to this cell uplink control channel interference is eliminated for this cell, and based on this
Interference of the signal to the adjacent cell to this cell uplink control channel of alternatively eating dishes without rice or wine suppresses；
Alternatively eat dishes without rice or wine in signal from what is determined for each adjacent cell, a signal of alternatively eating dishes without rice or wine is selected as this cell
Eliminate the signal of eating dishes without rice or wine after interference.
A kind of interference rejection unit of ascending control channel is embodiments provided, the device includes：
Alternatively eat dishes without rice or wine signal determining module, for for each adjacent cell, respectively according in the adjacent cell to this cell
Produce the interference signal of the ascending control channel parameter determination adjacent cell of the user equipment of interference, and eating dishes without rice or wine according to this cell
The interference signal of signal and the adjacent cell, it is determined that it is dry to this cell uplink control channel to eliminate the adjacent cell for this cell
The signal of alternatively eating dishes without rice or wine disturbed, and carried out based on the interference of the signal to the adjacent cell to this cell uplink control channel of alternatively eating dishes without rice or wine
Suppress；
Eat dishes without rice or wine signal determining module, for from determine for each adjacent cell it is all alternatively eating dishes without rice or wine in signal, select
One signal of alternatively eating dishes without rice or wine eliminates the signal of eating dishes without rice or wine after interference as this cell.
The embodiment of the present invention produces interference to this cell according in the adjacent cell respectively using for each adjacent cell
The interference signal of the ascending control channel parameter determination adjacent cell of user equipment, and according to eat dishes without rice or wine signal and the neighbour of this cell
The interference signal of cell, it is determined that eliminating alternatively eat dishes without rice or wine letter of the adjacent cell to this cell uplink control channel interference for this cell
Number, and suppressed based on the interference of the signal to the adjacent cell to this cell uplink control channel of alternatively eating dishes without rice or wine；From for every
Alternatively eating dishes without rice or wine in signal for one adjacent cell determination, selects a signal of alternatively eating dishes without rice or wine to eliminate eating dishes without rice or wine after interference as this cell
The method of signal, reduces the interference of ascending control channel co-frequency neighbor cell in LTE network, accurately determined adjacent cell
Interference source, improve the success rate of user access network, reduce cutting off rate, it is ensured that the speech quality of user.
Description of the drawings
Fig. 1 is a kind of schematic flow sheet of the disturbance restraining method of ascending control channel in the embodiment of the present invention；
Fig. 2 is the schematic diagram that the frequency-region signal of this cell in the embodiment of the present invention is converted to time domain；
Fig. 3 is a kind of schematic flow sheet of the concrete grammar of the AF panel of ascending control channel in the embodiment of the present invention；
Fig. 4 is the schematic diagram in the embodiment of the present invention according to the corresponding frequency domain resource of configuration extraction of each user of this cell；
Fig. 5 is Resource Block RB, the code cyclic shifts n of this cell occupancy in the embodiment of the present inventioncs, orthogonal code nocShow
It is intended to；
Fig. 6 is a kind of schematic diagram of the interference rejection unit of ascending control channel in the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention produces interference to this cell according in the adjacent cell respectively using for each adjacent cell
The interference signal of the ascending control channel parameter determination adjacent cell of user equipment, and according to eat dishes without rice or wine signal and the neighbour of this cell
The interference signal of cell, it is determined that eliminating alternatively eat dishes without rice or wine letter of the adjacent cell to this cell uplink control channel interference for this cell
Number, and suppressed based on the interference of the signal to the adjacent cell to this cell uplink control channel of alternatively eating dishes without rice or wine；From for every
Alternatively eating dishes without rice or wine in signal for one adjacent cell determination, selects a signal of alternatively eating dishes without rice or wine to eliminate eating dishes without rice or wine after interference as this cell
The method of signal, reduces the interference of ascending control channel co-frequency neighbor cell in LTE network, accurately determined adjacent cell
Interference source, improve the success rate of user access network, it is ensured that the speech quality of user.
The embodiment of the present invention is described in further detail with reference to Figure of description.
As shown in figure 1, for a kind of disturbance restraining method of ascending control channel in the embodiment of the present invention, the method includes：
Step 101：For each adjacent cell, respectively according to the user equipment for producing interference in the adjacent cell to this cell
The ascending control channel parameter determination adjacent cell interference signal, and according to eat dishes without rice or wine signal and the described adjacent cell of this cell
Interference signal, it is determined that for eliminating alternatively eat dishes without rice or wine signal of the adjacent cell to this cell uplink control channel interference, and be based on
The interference of the signal to the adjacent cell to this cell uplink control channel of alternatively eating dishes without rice or wine suppresses；
Step 102：Alternatively eat dishes without rice or wine in signal from what is determined for each adjacent cell, select a signal work of alternatively eating dishes without rice or wine
The signal of eating dishes without rice or wine after interference is eliminated for this cell.
Wherein, the user equipment that this cell produces interference is included during the adjacent cell is determined in step 101：According to this cell
The signal of eating dishes without rice or wine for receiving, determines the orthogonal code and Resource Block of this cell occupancy, and same orthogonal code and money will be taken in the adjacent cell
The user equipment of source block produces the user equipment of interference as the adjacent cell to this cell.
Before it is determined that producing the user equipment for disturbing to this cell in the adjacent cell, need first to take not this cell
Same orthogonal code carries out noise analysis, to determine that this cell needs the ascending control channel for carrying out adjacent cell interference elimination corresponding
Orthogonal code and Resource Block, concrete grammar are as follows：
According to the signal of eating dishes without rice or wine that this cell is received, determine that this cell user equipment is taken in identical running time-frequency resource orthogonal
The quantity of code；If quantity N of the orthogonal code that this cell user equipment is taken in identical running time-frequency resourceoc＞ 1, then carry out this cell
Ascending control channel interference is eliminated, otherwise process ends.
When quantity N of the orthogonal code that this cell user equipment is taken in identical running time-frequency resourceocDuring ＞ 1, this cell is estimated
Make an uproar level at the bottom of the different orthogonal code that user equipment takes：As shown in Fig. 2 according to the cell-level parameter of this cellIt is determined that
The different orthogonal code n that this cell takesocUser frequency-region signal, will obtain frequency-region signal carries out inverse Fourier transform, conversion
For time-domain signalWherein NIFFTIt is the length for carrying out inverse Fourier transform；To changing
To the time domain of this community user carry out over-sampling process, the code cyclic shifts n that then this community user is not takencsPosition
The noise put is counted, and the bottom for obtaining the orthogonal code that this cell currently takes is made an uproar level
Wherein,For the n that user does not takecsLocation sets；For the different orthogonal that this cell takes
Code nocUser the corresponding time domain data of frequency-region signal；NFFTIt is fourier transformed what is obtained for this cell time frequency signal of eating dishes without rice or wine
Frequency domain data；For this cell orthogonal code nocUnder user equipment quantity；K is over-sampling ratio,
Wherein k is positive number, if calculated k is not integer, determines k values using the method for rounding downwards；For in this cell
The cell-level parameter of row control channel.
Wherein,For the n that user does not takecsLocation sets are as follows：
Wherein,For the corresponding circulation position parameter of user；K be over-sampling ratio, over-sampling ratio
Wherein k is positive number, if calculated k is not integer, determines k values using the method for rounding downwards；NIFFTIt is to carry out inverse Fu
In leaf transformation points；For the sub-carrier number in a RB.
Made an uproar level according to the corresponding bottom of different orthogonal codeDetermine that the bottom of the Physical Resource Block that this cell currently takes is made an uproar
Level
Wherein,The bottom eliminated before interference for this cell is made an uproar judgment value,It is current for this cell null message number
The bottom of the orthogonal code for taking is made an uproar level,For one orthogonal code n of this cellocUnder user equipment quantity,The bottom of the Physical Resource Block currently taken for this cell is made an uproar level.
The bottom of the orthogonal code currently taken according to this cell is made an uproar levelThe Physical Resource Block currently taken with this cell
Bottom make an uproar levelDetermine that the corresponding bottom eliminated before interference of each orthogonal code that this cell takes is made an uproar judgment value
Wherein,The bottom of the orthogonal code currently taken for this cell is made an uproar level,For this cell orthogonal code
nocUnder user equipment quantity,The bottom of the Physical Resource Block currently taken for this cell is made an uproar level.
Eliminate the bottom before interference and make an uproar judgment value when orthogonal code is correspondingWhen, then recognize
Interference conditions to release is met for the orthogonal code, whereinBottom for setting is made an uproar the lower limit of judgment value,For emulation
Obtain the upper limit of judgment value of making an uproar on earth.
Determine that this cell all meets the orthogonal code of interference conditions to release, bottom is made an uproar levelHighest orthogonal code conduct
This cell needs to carry out the corresponding orthogonal code of ascending control channel that adjacent cell interference is eliminated, and the corresponding Resource Block of the orthogonal code is
This cell needs to carry out the corresponding Resource Block of ascending control channel that adjacent cell interference is eliminated.
The judgment value if the corresponding bottom eliminated before disturbing of the orthogonal code that this cell takes is made an uproarIt is unsatisfactory for interference to disappear
Except condition, then process ends.
In step 101, determine that adjacent cell is as follows to the method for the user equipment of this cell generation interference：
By S1 interfaces, or X2 interface, or network management platform system, the ascending control channel parameter for obtaining adjacent cell is matched somebody with somebody
Occupancy list is put, list is taken according to the ascending control channel parameter configuration of adjacent cell and is calculated the resource that each adjacent cell takes
Block RB and orthogonal code noc。
To need to carry out ascending control channel occupancy same orthogonal code and the Resource Block that adjacent cell interference is eliminated with this cell
User equipment, as adjacent cell to this cell produce interference user equipment.
Wherein it is determined that adjacent cell to this cell produce interference user equipment may belong to same adjacent cell, it is also possible to
Belong to different adjacent cells.
In step 101, according to the ascending control channel parameter of the user equipment for producing interference in the adjacent cell to this cell
Determine the interference signal of the adjacent cell, including：
The ascending control channel of the user equipment of interference is produced according to the cell number and adjacent cell of adjacent cell to this cell
Parameter, generates reference symbol and data symbol；Combined reference symbol and data symbol generate the interference signal of adjacent cell.
The ascending control channel of the user equipment of interference is produced according to the cell number and adjacent cell of adjacent cell to this cell
Parameter, the method for generating reference symbol are as follows：According to home control network communication protocol, control channel reference signal sequence is
Wherein n is sequential element number；nsFor timeslot number；M is numbered for frequency pilot sign；For the up reference of adjacent cell
Signal, by timeslot number nsAnd cell numberGenerate；For orthogonal sequence, by timeslot number nsAndIt is calculated.
The ascending control channel of the user equipment of interference is produced according to the cell number and adjacent cell of adjacent cell to this cell
Parameter, the method for generating data symbol are as follows：According to home control network communication protocol, the data division of format1 series is
Wherein nsFor timeslot number；M is numbered for data symbol；N is sequential element number；For the up reference of adjacent cell
Symbol, S (ns) for phase rotation coefficient；For orthogonal sequence；The response that d (i) is sent for user uplink, the present invention are implemented
D (i) is set as 1 in example.
In step 101, determine that this cell eliminates the signal of alternatively eating dishes without rice or wine of the adjacent cell interference by following formula：
Wherein,Alternatively eat dishes without rice or wine letter of the adjacent cell to this cell uplink control channel interference is eliminated for this cell
Number, signalvictimFor this cell null message number,Bottom before eliminating for this area interference is made an uproar judgment value,To adjust
Integral divisor, is obtained by Computer Simulation, and preferred value is 1,It is the adjacent cell to this cell uplink control channel
Interference signal.
In step 102, from all signals of alternatively eating dishes without rice or wine, select a signal of alternatively eating dishes without rice or wine to eliminate as this cell disturb
Signal of eating dishes without rice or wine afterwards, including：
If the signal of alternatively eating dishes without rice or wine of this cell only one of which adjacent cell interferenceThen this is alternatively eated dishes without rice or wine signalThe signal of eating dishes without rice or wine after interference is eliminated as this cell.
If this cell has the signal of alternatively eating dishes without rice or wine of two or more adjacent cell interferenceDetermine respectively
Each is used to eliminating adjacent cell makes an uproar to the corresponding bottom of signal of alternatively eating dishes without rice or wine of this cell uplink control channel interference judgment value；To this
Cell eliminates the bottom before interference and makes an uproar judgment value, and bottom corresponding with signal of alternatively eating dishes without rice or wine judgment value of making an uproar is poor respectively, by difference maximum
Alternatively eat dishes without rice or wine signal as this cell eliminate interference after signal of eating dishes without rice or wine.
Signal correspondence of alternatively eating dishes without rice or wine for eliminating adjacent cell to this cell uplink control channel interference is determined based on following formula
Bottom make an uproar judgment value：
Wherein,It is the signal pair of alternatively eating dishes without rice or wine for eliminating adjacent cell to this cell uplink control channel interference
The bottom answered is made an uproar judgment value,The bottom of the orthogonal code currently taken for signal of alternatively eating dishes without rice or wine is made an uproar level,For this cell
One orthogonal code nocUnder user equipment quantity,The bottom of the Physical Resource Block currently taken for this cell is made an uproar water
It is flat.
As shown in figure 3, for a kind of concrete grammar of the AF panel of ascending control channel, the method in the embodiment of the present invention
Step is as follows：
Step 301：According to the signal of eating dishes without rice or wine that this cell is received, judge that this cell user equipment is accounted in identical running time-frequency resource
Whether the quantity of orthogonal code is more than 1, if being more than, execution step 302, otherwise, process ends；
Step 302：The noise level of the different orthogonal code that this cell user equipment takes is estimated, and different orthogonal code is right
Make an uproar judgment value at bottom before the elimination interference answered；
Step 303：Judge this cell different orthogonal code elimination interference before bottom make an uproar judgment value whether meet interference eliminate
Condition, if meeting interference conditions to release, execution step 304, if all not meeting interference conditions to release, process ends；
Step 304：Determine that this cell is all met in the orthogonal code of interference conditions to release, bottom is made an uproar levelHighest is just
The corresponding ascending control channel of code is handed over to be that this cell needs to carry out the ascending control channel that adjacent cell interference is eliminated；
Step 305：It is determined that needing the ascending control channel occupancy for carrying out adjacent cell interference elimination identical orthogonal with this cell
The user equipment of code and Resource Block, is that adjacent cell produces the user equipment for disturbing to this cell；
Step 306：The ascending control channel parameter determination for producing the user equipment of interference according to adjacent cell to this cell is adjacent
The interference signal of cell；
Step 307：According to each adjacent cell interference signal and this cell null message number, determine that this cell eliminates adjacent cell interference
Whole alternatively eat dishes without rice or wine signal, and entered based on the interference of the signal to the adjacent cell to this cell uplink control channel of alternatively eating dishes without rice or wine
Row suppresses；
Step 308：The bottom that this cell is eliminated before interference is made an uproar judgment value, respectively corresponding with signal of alternatively eating dishes without rice or wine cell
Bottom judgment value of making an uproar it is poor, difference maximum signal of alternatively eating dishes without rice or wine is eliminated into the signal of eating dishes without rice or wine after interference as this cell, and is tied
Beam this flow process.
Below with a width of 20MHz of this cell system band, about the cell-level parameter of PUCCHFor 3, subframe nsFor 2,
There is the user that PUCCH sends to be 4, their control channelRespectively 0, Isosorbide-5-Nitrae, 12；Adjacent cell has what PUCCH sent
User is 3,As a example by respectively 2,3,5, the embodiment of the present invention is further described.
As shown in figure 4, according to the corresponding frequency domain resource of configuration extraction of each user of this cell, wherein time slot 0 has 3 users
The Physical Resource Block PRB of equipment distributes on No. 99 RB, and the Physical Resource Block PRB of another user equipment distributes the 98th
On number RB；The PRB that time slot 1 has 3 users distributes on No. 0 RB, and another user distributes on No. 1 RB.
According to cell-level parameterUser'sNumbering determines corresponding RB, code cyclic shifts ncs, it is orthogonal
Code noc.As shown in figure 5, this cellRespectively 0,1,4,12, then corresponding ncsFor 0,3,1,0, nocFor 0,0,1,0,
RB is No. 99 RB and No. 98 RB.By the n of each user equipmentocLearn the n that present this cell takesocIndex as 0,1.By
Quantity N of the orthogonal code taken in identical running time-frequency resource in this cell user equipmentoc＞ 1, therefore, to this cell user equipment
The different orthogonal code of occupancy carry out bottom make an uproar level estimation, to determine the need for carrying out interference suppression to this cell uplink control channel
System.
The n of this cell occupancy is calculated respectivelyocIndex and make an uproar level for 0,1 bottomWherein orthogonal code index is made an uproar for 0 bottom
LevelOrthogonal code index is made an uproar level for 1 bottom
Make an uproar level, and orthogonal code n taken according to this cell at the bottom for calculating the current corresponding PRB of orthogonal code for takingoc's
The make an uproar bottom of level and the current corresponding PRB of orthogonal code for taking of bottom is made an uproar level, determines orthogonal code n that this cell takesocIt is corresponding
Bottom is made an uproar judgment value；Judge whether the bottom judgment value of making an uproar of the current orthogonal code for taking meets interference conditions to release.
According to the n for calculating this cell occupancyocIndex for 0 and index for 1 bottom make an uproar judgment value be satisfied by disturb conditions to release,
Make an uproar level for 0 bottom as orthogonal code is indexedOrthogonal code index is made an uproar level for 1 bottomTherefore this cell needs to carry out
The corresponding orthogonal code index of ascending control channel that adjacent cell interference is eliminated is No. 99 for 0, RB.
By S1 interfaces, or X2 interface, or network management platform system, the ascending control channel parameter for obtaining adjacent cell is matched somebody with somebody
Occupancy list is put, adjacent cell is obtainedDistribution list is 2,3,5, that is, the RB for taking is No. 99, nocIndex is 0,1；
It is No. 99 by RB is taken, nocIndex is the user equipment that 0 user equipment is defined as that adjacent cell produces interference to this cell.From
Obtain adjacent cellDistribution list can be seen that adjacent cell produces what the user equipment of interference took to this cell
Distribution list is 2,3.
Numbering according to adjacent cell, and adjacent cell respectively produces the ascending control channel of the user equipment of interference to this cell
The interference signal of parameter determination adjacent cell.
This cell null message number is poor with the product of the interference signal of adjacent cell and Dynamic gene respectively, and gained difference is exactly
This cell eliminates the signal of alternatively eating dishes without rice or wine of adjacent cell interference.
Two corresponding cell bottoms of signal of alternatively eating dishes without rice or wine are calculated respectively to make an uproar judgment value, and this cell is eliminated before interference
Bottom judgment value corresponding cell bottom of signal judgment value of making an uproar of alternatively eating dishes without rice or wine with two respectively of making an uproar is poor, by the alternative sky that difference is maximum
Message number eliminates the signal of eating dishes without rice or wine after interference as this cell.
Based on same inventive concept, a kind of AF panel dress of ascending control channel in the embodiment of the present invention, is additionally provided
Put, due to a kind of disturbance restraining method of ascending control channel of principle and the embodiment of the present invention of the device solve problem it is similar,
Therefore the enforcement of the device may refer to the enforcement of method, repeats part and repeats no more.
As shown in fig. 6, for a kind of interference rejection unit of ascending control channel in the embodiment of the present invention, the device includes：
Alternatively eat dishes without rice or wine signal determining module 601, signal determining module 602 of eating dishes without rice or wine.
Alternatively eat dishes without rice or wine signal determining module 601, for for each adjacent cell, respectively according to little to this in the adjacent cell
Area produces the interference signal of the ascending control channel parameter determination adjacent cell of the user equipment of interference, and according to the sky of this cell
The interference signal of message number and the adjacent cell, it is determined that eliminating the adjacent cell to this cell uplink control channel for this cell
The signal of alternatively eating dishes without rice or wine of interference, and entered based on the interference of the signal to the adjacent cell to this cell uplink control channel of alternatively eating dishes without rice or wine
Row suppresses；
Eat dishes without rice or wine signal determining module 602, for alternatively eating dishes without rice or wine in signal from what is determined for each adjacent cell, select one
Individual signal of alternatively eating dishes without rice or wine eliminates the signal of eating dishes without rice or wine after interference as this cell.
Signal determining module 601 of alternatively eating dishes without rice or wine specifically for：According to the signal of eating dishes without rice or wine that this cell is received, determine that this cell is accounted for
Orthogonal code and Resource Block, will take the user equipment of same orthogonal code and Resource Block as the adjacent cell pair in the adjacent cell
This cell produces the user equipment of interference.
Signal determining module 601 of alternatively eating dishes without rice or wine is additionally operable to, and determines that this cell needs to carry out the up of adjacent cell interference elimination
The corresponding orthogonal code of control channel and Resource Block：
According to the signal of eating dishes without rice or wine that this cell is received, determine that this cell user equipment is taken in identical running time-frequency resource orthogonal
The quantity of code；If quantity N of the orthogonal code that this cell user equipment is taken in identical running time-frequency resourceoc＞ 1, then carry out this cell
Ascending control channel interference is eliminated, and ascending control channel interference is not otherwise carried out to this cell and is eliminated.
When quantity N of the orthogonal code that this cell user equipment is taken in identical running time-frequency resourceocDuring ＞ 1, this cell is estimated
The bottom of the different orthogonal code that user equipment takes is made an uproar level, is made an uproar level according to the corresponding bottom of different orthogonal codeIt is determined that this is little
The bottom of the Physical Resource Block that area currently takes is made an uproar levelThe bottom of the orthogonal code currently taken according to this cell is made an uproar level
The bottom of the Physical Resource Block currently taken with this cell is made an uproar levelDetermine that each orthogonal code of this cell occupancy is corresponding to disappear
Except the bottom before interference is made an uproar judgment value
Eliminate the bottom before interference and make an uproar judgment value when orthogonal code is correspondingWhen, then recognize
Interference conditions to release is met for the orthogonal code, whereinBottom for setting is made an uproar the lower limit of judgment value,For emulation
Obtain the upper limit of judgment value of making an uproar on earth.
Determine that this cell all meets the orthogonal code of interference conditions to release, bottom is made an uproar levelHighest orthogonal code conduct
This cell needs to carry out the corresponding orthogonal code of ascending control channel that adjacent cell interference is eliminated, and the corresponding Resource Block of the orthogonal code is
This cell needs to carry out the corresponding Resource Block of ascending control channel that adjacent cell interference is eliminated.
The judgment value if the corresponding bottom eliminated before disturbing of the orthogonal code that this cell takes is made an uproarIt is unsatisfactory for interference to disappear
Except condition, then ascending control channel interference is not carried out to this cell and is eliminated.
Signal determining module 601 of alternatively eating dishes without rice or wine is specifically for by S1 interfaces, or X2 interface, or network management platform system
System, the ascending control channel parameter configuration for obtaining adjacent cell take list, according to the ascending control channel parameter configuration of adjacent cell
Take list and calculate Resource Block RB and orthogonal code n that each adjacent cell takesoc。
To need to carry out ascending control channel occupancy same orthogonal code and the Resource Block that adjacent cell interference is eliminated with this cell
User equipment, as adjacent cell to this cell produce interference user equipment.
Wherein it is determined that adjacent cell to this cell produce interference user equipment may belong to same adjacent cell, it is also possible to
Belong to different adjacent cells.
The ascending control channel of the user equipment of interference is produced according to the cell number and adjacent cell of adjacent cell to this cell
The interference signal of parameter determination adjacent cell.
Adjacent cell is eliminated according to the eat dishes without rice or wine signal and the adjacent cell interference signal for determining of this cell to control this cell uplink
The signal of alternatively eating dishes without rice or wine of channel disturbance；Determine that this cell eliminates the signal of alternatively eating dishes without rice or wine of the adjacent cell interference according to the following formula：
Wherein,Alternatively eat dishes without rice or wine letter of the adjacent cell to this cell uplink control channel interference is eliminated for this cell
Number, signalvictimFor this cell null message number,Bottom before eliminating for this area interference is made an uproar judgment value,To adjust
Integral divisor, is obtained by Computer Simulation, and preferred value is 1.
Signal determining module 602 of eating dishes without rice or wine is specifically for if the signal of alternatively eating dishes without rice or wine of this cell only one of which adjacent cell interferenceThen this is alternatively eated dishes without rice or wine signalThe signal of eating dishes without rice or wine after interference is eliminated as this cell.
If this cell has the signal of alternatively eating dishes without rice or wine of two or more adjacent cell interferenceThen count respectively
Calculate each corresponding cell bottom of signal of alternatively eating dishes without rice or wine to make an uproar judgment value；The bottom that this cell is eliminated before interference is made an uproar judgment value, respectively
The bottom of corresponding with signal of alternatively eating dishes without rice or wine cell judgment value of making an uproar is poor；Using the maximum signal of alternatively eating dishes without rice or wine of difference as this cell
Eliminate the signal of eating dishes without rice or wine after interference.
The present invention is with reference to method according to embodiments of the present invention, equipment（System）, and computer program flow process
Figure and/or block diagram are describing.It should be understood that can be by computer program instructions flowchart and/or each stream in block diagram
The combination of journey and/or square frame and flow chart and/or flow process and/or square frame in block diagram.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices
The device of the function of specifying in present one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in and can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory is produced to be included referring to
Make the manufacture of device, the command device realize in one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or
The function of specifying in multiple square frames.
These computer program instructions can be also loaded in computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented process, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow process of flow chart or multiple flow processs and/or block diagram one
The step of function of specifying in individual square frame or multiple square frames.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to include excellent
Select embodiment and fall into the had altered of the scope of the invention and change.
Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (8)
1. a kind of disturbance restraining method of ascending control channel, it is characterised in that the method includes：
For each adjacent cell, believed according to the upload control of the user equipment for producing interference in the adjacent cell to this cell respectively
The interference signal of the road parameter determination adjacent cell, and the interference signal of eat dishes without rice or wine signal and the adjacent cell according to this cell,
It is determined that for eliminating alternatively eat dishes without rice or wine signal of the adjacent cell to this cell uplink control channel interference, and based on the letter of alternatively eating dishes without rice or wine
Interference number to the adjacent cell to this cell uplink control channel suppresses；
Alternatively eat dishes without rice or wine in signal from what is determined for each adjacent cell, select a signal of alternatively eating dishes without rice or wine to eliminate as this cell
Signal of eating dishes without rice or wine after interference；
The interference signal of eat dishes without rice or wine signal and the adjacent cell according to this cell, it is determined that for eliminating the adjacent cell to this
The signal of alternatively eating dishes without rice or wine of cell uplink control channel interference, specifically includes：
Determined based on following formula and eliminate alternatively eat dishes without rice or wine signal of the adjacent cell to this cell uplink control channel interference：
Wherein,To eliminate alternatively eat dishes without rice or wine signal of the adjacent cell to this cell uplink control channel interference,
signalvictimFor this cell null message number,Bottom before eliminating for this area interference is made an uproar judgment value,For adjustment because
Son,For interference signal of the adjacent cell to this cell uplink control channel.
2. the method for claim 1, it is characterised in that determined according to the following steps this cell is produced in adjacent cell it is dry
The user equipment disturbed：
Determine that needs that this cell currently takes carry out the orthogonal code and Resource Block of interference elimination, will take in adjacent cell it is identical just
Code and the user equipment of Resource Block is handed over to produce the user equipment that disturb to this cell as adjacent cell.
3. method as claimed in claim 1 or 2, it is characterised in that from the letter of alternatively eating dishes without rice or wine determined for each adjacent cell
In number, a signal of alternatively eating dishes without rice or wine is selected to eliminate the signal of eating dishes without rice or wine after interference as this cell, including：
Each is determined respectively for eliminating alternatively eat dishes without rice or wine signal corresponding bottom of the adjacent cell to this cell uplink control channel interference
Make an uproar judgment value；
The bottom that this cell is eliminated before interference is made an uproar judgment value, bottom corresponding with signal of alternatively eating dishes without rice or wine judgment value of making an uproar is poor respectively, general
What difference was maximum alternatively eats dishes without rice or wine signal as the signal of eating dishes without rice or wine after the elimination interference of this cell.
4. method as claimed in claim 3, it is characterised in that determined for eliminating adjacent cell to this cell uplink based on following formula
The corresponding bottom of signal of alternatively eating dishes without rice or wine of control channel interference is made an uproar judgment value：
Wherein,It is corresponding to the signal of alternatively eating dishes without rice or wine of this cell uplink control channel interference for eliminating adjacent cell
Bottom is made an uproar judgment value,The bottom of the orthogonal code currently taken for signal of alternatively eating dishes without rice or wine is made an uproar level,For described in this cell
One orthogonal code nocUnder user equipment quantity,The bottom of the Physical Resource Block currently taken for this cell is made an uproar level；
Determine that this cell eliminates the bottom before interference and makes an uproar judgment value based on following formula：
Wherein,The bottom eliminated before interference for this cell is made an uproar judgment value,Currently take for this cell null message number
The bottom of an orthogonal code make an uproar level,For one orthogonal code n of this cellocUnder user equipment quantity,For
The bottom of the Physical Resource Block that this cell currently takes is made an uproar level.
5. a kind of interference rejection unit of ascending control channel, it is characterised in that the device includes：
Alternatively eat dishes without rice or wine signal determining module, for for each adjacent cell, producing to this cell according in the adjacent cell respectively
The interference signal of the ascending control channel parameter determination adjacent cell of the user equipment of interference, and according to the signal of eating dishes without rice or wine of this cell
With the interference signal of the adjacent cell, it is determined that for eliminating alternative sky of the adjacent cell to this cell uplink control channel interference
Message number, and suppressed based on the interference of the signal to the adjacent cell to this cell uplink control channel of alternatively eating dishes without rice or wine；
Eat dishes without rice or wine signal determining module, for from determine for each adjacent cell it is all alternatively eating dishes without rice or wine in signal, select one
Signal is eated dishes without rice or wine alternatively as the signal of eating dishes without rice or wine after the elimination interference of this cell；
It is described alternatively eat dishes without rice or wine signal determining module specifically for：
Determined based on following formula and eliminate alternatively eat dishes without rice or wine signal of the adjacent cell to this cell uplink control channel interference：
Wherein,To eliminate alternatively eat dishes without rice or wine signal of the adjacent cell to this cell uplink control channel interference,
signalvictimFor this cell null message number,Bottom before eliminating for this area interference is made an uproar judgment value,For adjustment because
Son,For interference signal of the adjacent cell to this cell uplink control channel.
6. device as claimed in claim 5, it is characterised in that it is described alternatively eat dishes without rice or wine signal determining module specifically for：
Will be the orthogonal code currently taken with this cell in adjacent cell and Resource Block identical user equipment little to this as adjacent cell
Area produces the user equipment of interference.
7. the device as described in claim 5 or 6, it is characterised in that it is described eat dishes without rice or wine signal determining module specifically for：
Each is determined respectively for eliminating alternatively eat dishes without rice or wine signal corresponding bottom of the adjacent cell to this cell uplink control channel interference
Make an uproar judgment value；The bottom that this cell is eliminated before interference is made an uproar judgment value, bottom corresponding with signal of alternatively eating dishes without rice or wine is made an uproar judgment value work respectively
Difference maximum signal of alternatively eating dishes without rice or wine is eliminated the signal of eating dishes without rice or wine after interference by difference as this cell.
8. device as claimed in claim 7, it is characterised in that the signal determining module of alternatively eating dishes without rice or wine is determined based on following formula to be used
The corresponding bottom of signal of alternatively eating dishes without rice or wine of this cell uplink control channel interference is made an uproar judgment value in adjacent cell is eliminated：
Wherein,It is corresponding to the signal of alternatively eating dishes without rice or wine of this cell uplink control channel interference for eliminating adjacent cell
Bottom is made an uproar judgment value,The bottom of the orthogonal code currently taken for signal of alternatively eating dishes without rice or wine is made an uproar level,For described in this cell
One orthogonal code nocUnder user equipment quantity,The bottom of the Physical Resource Block currently taken for this cell is made an uproar level；
Determine that this cell eliminates the bottom before interference and makes an uproar judgment value based on following formula：
Wherein,The bottom eliminated before interference for this cell is made an uproar judgment value,Currently take for this cell null message number
The bottom of one orthogonal code is made an uproar level,For one orthogonal code n of this cellocUnder user equipment quantity,For this
The bottom of the Physical Resource Block that cell currently takes is made an uproar level.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873602A (en) * | 2010-05-31 | 2010-10-27 | 新邮通信设备有限公司 | Interference suppression method of physical upstream control channel (PUCCH) in LTE (Long Term Evolution) system |
| CN102523186A (en) * | 2011-12-19 | 2012-06-27 | 展讯通信（上海）有限公司 | Communication terminal, interference cancellation method for same, interference cancellation device for same and data demodulation method for same |
| WO2012129903A1 (en) * | 2011-03-28 | 2012-10-04 | 华为技术有限公司 | Method and device for preventing inter-cell interference |
| WO2012165067A1 (en) * | 2011-05-30 | 2012-12-06 | ソニー株式会社 | Wireless resource allocation method, wireless resource allocation device, and communication system |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873602A (en) * | 2010-05-31 | 2010-10-27 | 新邮通信设备有限公司 | Interference suppression method of physical upstream control channel (PUCCH) in LTE (Long Term Evolution) system |
| WO2012129903A1 (en) * | 2011-03-28 | 2012-10-04 | 华为技术有限公司 | Method and device for preventing inter-cell interference |
| WO2012165067A1 (en) * | 2011-05-30 | 2012-12-06 | ソニー株式会社 | Wireless resource allocation method, wireless resource allocation device, and communication system |
| CN102523186A (en) * | 2011-12-19 | 2012-06-27 | 展讯通信（上海）有限公司 | Communication terminal, interference cancellation method for same, interference cancellation device for same and data demodulation method for same |
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