CN103582097B - A kind of control method of inter-cell uplink interference - Google Patents
A kind of control method of inter-cell uplink interference Download PDFInfo
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- CN103582097B CN103582097B CN201210248595.3A CN201210248595A CN103582097B CN 103582097 B CN103582097 B CN 103582097B CN 201210248595 A CN201210248595 A CN 201210248595A CN 103582097 B CN103582097 B CN 103582097B
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Abstract
This application discloses in the application and periodic descending measurement time window is set for each common sub-band of network；After eNB detects interference source in a common sub-band, in the descending measurement time window of this subband, increase the transmit power of downstream grants signal to more than default first threshold；When adjacent area UE detects, in the descending measurement time window of self work at present subband, the interference source that power is more than default Second Threshold, control the power control instruction of " improve and launch power " that the transmitting power of self, no longer response eNB issue.By the application, when lacking X2 interface, it is possible to achieve the interference of minizone controls.
Description
Technical field
The application relates to the interference control technology in communication system, particularly to the controlling party of a kind of inter-cell uplink interference
Method.
Background technology
Current coordinating district interference algorithm mainly realizes disturbing control by the static programming of frequency band.Specifically,
UE determines the center of being in or boundary position by the RSRP difference detecting each cell broadcast signals, and ENB is thus
Determine that UE uses central user frequency band or edge customer frequency band.Generally, the edge customer of neighbor cell takies
Different frequency bands, thus avoid interfering between the edge customer of neighbor cell.And for adjacent area edge customer and basis
Interference between the central user of community controls, it is common that utilize the X2 interface of minizone to pass between the eNB of neighbor cell
Defeated mutual actual loading information, issues disturbed condition in real time, thus controls adjacent area edge customer to this in minizone
The interference that the central user of community causes.
But in above-mentioned interference control method, when there is not X2 interface in minizone, the actual negative information carrying of each minizone
Breath, disturbed condition can not cause up to the central user of this community of adjacent area edge customer in real time in minizone issue
Interference cannot reduce in time.
Summary of the invention
The application provides the control method of a kind of inter-cell uplink interference, it is possible to when minizone does not exists X2 interface,
Effectively control the adjacent area edge customer uplink interference to this Cell Center User.
A kind of control method of inter-cell uplink interference, including:
In advance periodic descending measurement time window is set for each common sub-band in network；
After eNB detects interference source in a common sub-band, increase descending in the descending measurement time window of this subband
The transmit power of authorization signal to preset first threshold more than；
Arbitrary UE detects that power is more than default Second Threshold in the descending measurement time window of self work at present subband
Interference source time, control the transmitting power of self, the power control of " improve and launch power " that no longer response eNB issues refers to
Order.
It is preferred that after described UE is not responding to the power control instruction of " improve and launch power " that eNB issues, the method
Farther include: when described UE is not detected by described in the descending measurement time window of N continuous of work at present subband
After the power interference source more than default Second Threshold, respond most " improve and launch power " of described UE record
Power control instruction, and the power control instruction starting to issue according to eNB adjusts and launches power.
It is preferred that the method farther includes: eNB in the descending measurement time window of user's work at present subband not to
This user sends downgoing control signal (DCI).
As seen from the above technical solution, in the application for each common sub-band of network arrange periodic descending measure time
Between window；After eNB detects interference source in a common sub-band, under increasing in the descending measurement time window of this subband
The transmit power of row authorization signal to preset first threshold more than；When adjacent area UE is under self work at present subband
When row detects, in measuring time window, the interference source that power is more than default Second Threshold, control the transmitting power of self, no
Respond the power control instruction of " improve and launch power " that eNB issues again.By the way, can be existed by eNB
Increase the mode of downstream grants signal transmitting power in descending measurement time window, notice adjacent area UE to same frequency band other
UE interferes, and this adjacent area UE no longer responds the power control instruction of " improve and launch power " that eNB issues, thus
Reach to control to launch power, reduce the purpose that other UE are disturbed.As can be seen here, it is not necessary to adjacent eNB is passed through
The mutual loading condition of X2 interface, the interference equally realizing minizone controls.
Accompanying drawing explanation
Fig. 1 is the particular flow sheet of the medium and small interval interference control method of the application.
Detailed description of the invention
In order to make the purpose of the application, technological means and advantage clearer, below in conjunction with accompanying drawing to this Shen
Please be described in further details.
The basic thought of the application is: by arranging descending measurement time window, makes eNB detect that adjacent area is relatively
After big interference, actively by improving in descending measurement time window by the way of signal transmitting power, notice adjacent area UE control
System launches power.
Fig. 1 is the particular flow sheet of the medium and small interval interference control method of the application.As it is shown in figure 1, the method bag
Include:
Step 101, arranges periodic descending measurement time window for each common sub-band in network in advance.
The setting of descending measurement time window is periodic, and window length and particular location can be carried out according to actual needs
Set.For avoiding the signal of this community to be disturbed by the big signal in adjacent area, demodulation performance is caused to decline, it is preferable that
ENB does not sends downgoing control signal (DCI) to this UE in the descending measurement time window of UE work at present subband.
Wherein, window length can not be the shortest, it is ensured that collects enough energy and judges to carry out adjacent area interference, it is to avoid will burst
The interference such as noise as the signal of neighbor cell, cause erroneous judgement；Window length can not be oversize, to prevent from reducing UE
The resource utilization of work at present subband.
The most identical, below with common sub-band A for the presence of intercell interference control mode in common sub-band each in network
On interference control as a example by illustrate.
Step 102, after certain eNB detects interference source in common sub-band A, descending at this subband of eNB
Measure the transmit power increasing downstream grants signal in time window to more than default first threshold.
ENB can be to use existing mode to the detection of interference source, after the jamming power detected is more than certain threshold value
Determine and there is interference source.
ENB detects interference source in certain common sub-band A, it is meant that UE in same sub-band A of adjacent area
Transmit power causes interference to this eNB, and therefore, this eNB needs to notify that this adjacent area UE controls self
Transmitting power.Concrete advice method is: eNB increases descending in the descending measurement time window of respective sub-bands A
The transmit power (typically should be less than broadcast signal power) of authorization signal, is increased to the first threshold preset
Value, the value of concrete first threshold can set as required, as long as ensureing that adjacent area UE receives this downstream grants
Signal can recognize that it is strong jamming.
Step 103, as the UE being operated on subband A, to detect that power is more than in descending measurement time window default
During the interference source of Second Threshold, controlling the transmit power of self, no longer respond that its place eNB issues " improves
Launch power " power control instruction.
In step 102, eNB has improve sending out of downstream signal mandate in the descending measurement time window of subband A
Sending power, so, the UE that neighbor cell is operated on subband A just can detect in descending measurement time window
The interference source of the Second Threshold preset it is more than such that it is able to determine and currently just have to high-power interference source, i.e. power
The central user of certain community with oneself be operated in same subband, in order to reduce the up channel to this central user
Interference, needs the transmit power drawn oneself up, and what the most no longer response eNB sent to oneself " improves and launch merit
Rate " (" UP ") power control command, to reduce the interference to adjacent area central user.Wherein, the preset
Two threshold values can be arranged according to actual needs, does not limits.It is not responding to " UP " order, it is meant that this UE
Actively reduce the data transmission rate of oneself, to reduce the uplink interference to adjacent area central user.
After UE in step 103 controls the transmit power of self, for improving resource utilization further, preferably
Also include processing as follows:
Step 104, " UP " power control instruction that UE record eNB issues and self does not responds in step 103,
After being not detected by the power interference source more than default Second Threshold in the descending measurement time window of N continuous, response
Most " UP " power control instructions of record, and start to adjust according to the power control instruction that eNB issues to launch power.
UE can record eNB and self not respond " UP " command word, generally, such command word UE
Only record one.After UE N continuous measurement time window is not detected by aforementioned interference source, can send in data
Time active response record most " UP " command words, attempt increase ascending power, reach improve data speed
The effect of rate.Further, from that point on, UE re-enters in the correct response of the power control commands word to eNB,
If next service eNB has new power control instruction to arrive, UE can be adjusted according to instruction.
Here, need illustratively, when UE does not responds " UP " command word that eNB issues, next eNB
May continue to send this command word, and if each eNB is issued by UE but " UP " command word of not responding
All carry out record, then after recovering the response to eNB power control instruction, it should the command word of all records will be responded,
I.e. respond repeatedly " UP " command word, it is more likely that cause UE to launch power and improve too much problem.Therefore,
For avoiding this problem, UE at most responds " UP " command word that eNB issues and self does not responds.
So far, the interference control method flow process in the application terminates.From implementing of above-mentioned the application,
The application need not utilize the load information of X2 interface transmission community, but by regulating the descending control of central user
The transmit power of channel processed, the interference UE transmission to adjacent area controls the instruction of uplink transmission power, reaches minizone
The quickly purpose of interference coordination.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all in the present invention
Spirit and principle within, any modification, equivalent substitution and improvement etc. done, should be included in the present invention protect
Within the scope of protecting.
Claims (3)
1. the control method of an inter-cell uplink interference, it is characterised in that the method includes:
In advance periodic descending measurement time window is set for each common sub-band in network；
After eNB detects interference source in a common sub-band, increase descending in the descending measurement time window of this subband
The transmit power of authorization signal to preset first threshold more than；
Arbitrary UE detects that power is more than default Second Threshold in the descending measurement time window of self work at present subband
Interference source time, control the transmitting power of self, the power control of " improve and launch power " that no longer response eNB issues refers to
Order.
Method the most according to claim 1, it is characterised in that " carry what described UE was not responding to that eNB issues
High emission power " power control instruction after, the method farther includes: when continuous at work at present subband of described UE
After being not detected by the described power interference source more than default Second Threshold in N number of descending measurement time window, respond described UE
The power control instruction of one " improve and launch power " of record, and start to adjust according to the power control instruction that eNB issues to launch
Power.
Method the most according to claim 1 and 2, it is characterised in that the method farther includes: eNB with
Downgoing control signal DCI is not sent to this user in the descending measurement time window of family work at present subband.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210248595.3A CN103582097B (en) | 2012-07-18 | 2012-07-18 | A kind of control method of inter-cell uplink interference |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210248595.3A CN103582097B (en) | 2012-07-18 | 2012-07-18 | A kind of control method of inter-cell uplink interference |
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| Publication Number | Publication Date |
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| CN103582097A CN103582097A (en) | 2014-02-12 |
| CN103582097B true CN103582097B (en) | 2016-09-21 |
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| CN108366413B (en) * | 2017-01-26 | 2022-01-14 | 华为技术有限公司 | Terminal, network device and communication method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6587696B1 (en) * | 1998-07-31 | 2003-07-01 | Nokia Mobile Phones Limited | Power control technique utilizing forward pilot channel |
| CN101228708A (en) * | 2005-06-08 | 2008-07-23 | 意大利电信股份公司 | System and method for sending contents to multi mobile communication network users |
| CN101536589A (en) * | 2006-10-03 | 2009-09-16 | 株式会社Ntt都科摩 | Transmission power control method, user terminal, and base station |
| CN102036249A (en) * | 2009-09-24 | 2011-04-27 | 株式会社Ntt都科摩 | Inter-cell interference coordination method and base station |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4835465B2 (en) * | 2007-02-26 | 2011-12-14 | 株式会社日立製作所 | Wireless communication system and terminal |
| US8126403B2 (en) * | 2008-04-23 | 2012-02-28 | Telefonaktiebolaget Lm Ericsson (Publ) | Estimating and limiting inter-cell interference |
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2012
- 2012-07-18 CN CN201210248595.3A patent/CN103582097B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6587696B1 (en) * | 1998-07-31 | 2003-07-01 | Nokia Mobile Phones Limited | Power control technique utilizing forward pilot channel |
| CN101228708A (en) * | 2005-06-08 | 2008-07-23 | 意大利电信股份公司 | System and method for sending contents to multi mobile communication network users |
| CN101536589A (en) * | 2006-10-03 | 2009-09-16 | 株式会社Ntt都科摩 | Transmission power control method, user terminal, and base station |
| CN102036249A (en) * | 2009-09-24 | 2011-04-27 | 株式会社Ntt都科摩 | Inter-cell interference coordination method and base station |
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