CN103856982B - A kind of method for reducing down control channel interference - Google Patents
A kind of method for reducing down control channel interference Download PDFInfo
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- CN103856982B CN103856982B CN201210510841.8A CN201210510841A CN103856982B CN 103856982 B CN103856982 B CN 103856982B CN 201210510841 A CN201210510841 A CN 201210510841A CN 103856982 B CN103856982 B CN 103856982B
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 89
- 238000013475 authorization Methods 0.000 claims abstract description 7
- 239000000969 carrier Substances 0.000 claims description 3
- 230000001186 cumulative effect Effects 0.000 claims description 2
- 238000005315 distribution function Methods 0.000 claims description 2
- 238000004088 simulation Methods 0.000 claims description 2
- 230000002776 aggregation Effects 0.000 description 4
- 238000004220 aggregation Methods 0.000 description 4
- 230000006855 networking Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
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- 230000009467 reduction Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
This application discloses a kind of method for reducing down control channel interference, including：In advance for each sector is respectively configured all standing carrier wave for being exclusively used in providing the network coverage, all standing carrier wave of adjacent sectors is different；The PDCCH configured on all standing carrier wave of each sector is sent using normal power, is configured PDCCH of each sector in addition to all standing carrier wave on other carrier waves and is sent using drop power；After edge UE access networks, network side is its configuration main carrier using all standing carrier wave of sector where it, and configures its scheduling authorization mode for cross-carrier scheduling mode；After the UE access networks of center, it is its configuration main carrier using the non-all standing carrier wave of sector where it, if including all standing carrier wave in the polymerization carrier wave of center UE, the load state of PDCCH on be polymerized according to it channel quality and all standing carrier wave of carrier wave, it is determined that using cross-carrier scheduling.The present invention can reduce minizone PDCCH channel disturbances in the case where Traffic Channel coverage is not influenceed, and realize PDCCH load balances.
Description
Technical field
The present invention relates to mobile communication technology, more particularly to a kind of method for reducing down control channel interference.
Background technology
In LTE system, downlink physical control channel（PDCCH, Physical Down Control Channel）For entering
The mandate of row Traffic Channel.In the LTE system of identical networking, with the downlink physical control channel of each cell on frequency
（PDCCH, Physical Down Control Channel）Taking identical running time-frequency resource carries out data is activation.Cell edge
User equipment（UE）PDCCH be disturbed it is bigger.In order to take into account the demodulation performance and spectrum efficiency under disturbance level,
Standard defines 4 kinds of control channel units（Control Channel Element, CCE）Polymerization grade transmits descending control
Information（Downlink Control Information, DCI）, correspond to transmit 1 DCI using 1,2,4 and 8 CCE respectively.It is poly-
Conjunction bigger grade, and antijamming capability is stronger, but the resource for taking is also more.
Under the typical scene that 3GPP is given, the demodulation threshold of PDCCH channels is much higher relative to PBCH, identical networking
When minizone PDCCH channels interference than more serious, even if using maximum polymerization grade being likely to that demodulation performance cannot be met
Requirement.Therefore, PDCCH channels are likely to become the bottleneck of network performance, network KPI indexs can be caused to be affected, especially
In the signalling interactive process that edge occurs, the probability raising that switching etc. fails is accessed.
With the evolution of LTE, in lte-a system while backward compatibility LTE is kept, carrier aggregation technology is introduced.
Using carrier aggregation, a UE can configure multiple carrier waves.In the lte-a system for supporting carrier aggregation, scheduling authorization is supported
Two kinds of sending methods, i.e. this carrier wave dispatch (Same CC) and cross-carrier scheduling (Cross CC).Wherein, this carrier wave is dispatched and refers to
The descending distribution of one carrier wave and uplink authorization are dispatched by the PDCCH of this carrier wave；Cross-carrier scheduling refers to the descending of carrier wave
Distribution and uplink authorization can be dispatched by the PDCCH of other carrier waves.Cross-carrier scheduling be introduced as solve minizone PDCCH channels
Interference provide new approach.
It is currently suggested one kind and dispatches dry to reduce minizone PDCCH channels using cross-carrier in the case of identical networking
The scheme disturbed.The program is directed to heterogeneous network scene, and carrier aggregation is all configured with macro base station and Pico base stations.For matching somebody with somebody for UE
Put two polymerization carrier waves, macro base station will be sent on a carrier wave using normal power wherein, be used on another carrier wave
The mode for dropping power sends so as to the interference reduction of Pico base stations on the carrier wave that macro base station sends after power is dropped；In small
The UE of area's range expansion area, using cross-carrier scheduling, the center UE to Pico base stations or macro base station does not use cross-carrier scheduling.
Such scheme can effectively evade macro base station and Pico base station down controls to a certain extent using cross-carrier scheduling
The interference of interchannel processed, but due to the program in, not only to the PDCCH on carrier wave carry out drop power send, on carrier wave
Traffic Channel is that PDSCH also uses drop power transmission, and so, the coverage of Traffic Channel will be reduced, while also reducing
The received signal to noise ratio of Traffic Channel in coverage（SNR）, it is not suitable for isomorphism macro base station networking scene.In addition, above-mentioned side
The mode dispatched only with this carrier wave to the PDCCH resource distribution of central user in case, which is unfavorable for that PDCCH loads are equal
Weighing apparatus, is likely to result in the PDCCH overloads on the carrier wave sent using normal power.
As can be seen here, the scheme of minizone PDCCH channel disturbances is reduced using cross-carrier scheduling, there is diminution business letter
The coverage in road, the problem for reducing Traffic Channel reception SNR and part PDCCH overloads in coverage.
The content of the invention
In view of this, it is a primary object of the present invention to provide a kind of method for reducing down control channel interference, the party
Method can effectively reduce minizone PDCCH channel disturbances, and can realize in the case where Traffic Channel coverage is not influenceed
PDCCH load balances.
In order to achieve the above object, technical scheme proposed by the present invention is：
A kind of method for reducing down control channel interference, including：
Network side is respectively configured all standing carrier wave for being exclusively used in providing the network coverage for each sector in advance, wherein, it is adjacent
The all standing carrier wave of sector is differed；The down control channel PDCCH configured on all standing carrier wave of each sector is adopted
Sent with normal power, configure PDCCH of each sector on other member carriers in addition to all standing carrier wave using default
Drop power send；The drop power is less than the normal power；
After the edge customer equipment UE access network of cell, network side utilizes all standing of sector where the edge UE
Carrier wave is that the edge UE configures main carrier, and it is cross-carrier scheduling mode to configure the scheduling authorization mode of the edge UE；
After the center UE access networks of cell, network side is using the non-all standing carrier wave of sector where the center UE
The center UE configures main carrier, if including all standing carrier wave in the polymerization carrier wave of the center UE, according to the center
PDCCH load states in the channel quality and the polymerization carrier wave of each polymerization carrier wave of UE on all standing carrier wave, it is determined that being
It is no that cross-carrier scheduling mode is used to the center UE.
In sum, method proposed by the present invention, introduces non-all standing carrier wave, and only on non-all standing carrier wave
PDCCH is sent using drop power, and the main carrier of center UE is configured on non-all standing carrier wave, can effectively ensure reducing small
The coverage of Traffic Channel is not influenceed while interval PDCCH channel disturbances；Meanwhile, it is each sector configuration all standing carrier wave,
The all standing carrier wave of adjacent sectors is differed, the main carrier of edge UE is configured on all standing carrier wave, and make the edge UE can
To use cross-carrier scheduling mode, i.e. edge UE to use on the non-all standing carrier wave of PDCCH channel dispatch on main carrier
PDSCH and PUSCH channels, it is ensured that edge UE has enough traffic channel resources, while neighbor cell can effectively be reduced
Between PDCCH channel disturbances；In addition, for center UE, it is complete in the channel quality and its polymerization carrier wave according to its each polymerization carrier wave
The PDCCH load states on carrier wave are covered to determine whether to the center UE using cross-carrier scheduling mode, so can be with profit
The problem that this carrier wave dispatches occurred PDCCH overloads is prevented effectively from cross-carrier scheduling.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the embodiment of the present invention one.
Specific embodiment
It is right below in conjunction with the accompanying drawings and the specific embodiments to make the object, technical solutions and advantages of the present invention clearer
The present invention is described in further detail.
Core concept of the invention is：For each sector, setting is exclusively used in providing all standing carrier wave of the network coverage, and
Differ all standing carrier wave of adjacent sectors；Sent using normal power for the PDCCH channels on all standing carrier wave, for
The PDCCH channels of non-all standing carrier wave are sent using drop power；The all standing carrier wave of each sector is mainly responsible for the sector side
The scheduling of edge UE provides PDCCH resource, with reach reduce sector-edge PDCCH between disturb, improve PDCCH channels and receive SNR's
Purpose, simultaneously because only carrying out drop power to the PDCCH on non-all standing carrier wave, i.e., does not reduce the business letter of non-all standing carrier wave
The power in road, so can ensure that the coverage of Traffic Channel is not reduced, and will not reduce Traffic Channel in coverage
Reception SNR；In addition, when being dispatched to sector centers UE, according to the PDCCH channel loadings on each polymerization carrier wave of center UE
Situation and channel quality determined whether to the center UE using cross-carrier scheduling mode, can so avoid this carrier wave from adjusting
The problem of the occurred PDCCH overloads of degree, realizes the load balance of PDCCH.
Fig. 1 is the schematic flow sheet of the embodiment of the present invention one, as shown in figure 1, the embodiment mainly includes：
Step 101, network side are respectively configured all standing carrier wave for being exclusively used in providing the network coverage for each sector in advance, its
In, all standing carrier wave of adjacent sectors is differed；The PDCCH on all standing carrier wave of each sector is configured using normal
Power sends, and configures PDCCH of each sector on other member carriers in addition to all standing carrier wave and uses default drop work(
Rate sends.
Here, the drop power is needed less than the normal power.It is preferred that the default drop power needs to meet：
Resulting actual snr of received signal SINR is transmitted using the drop power0The demodulation modes used more than transmission
Corresponding highest demodulation threshold SINRuWith default margin value a's and.
In this step, non-all standing carrier wave is introduced, and only to the PDCCH on non-all standing carrier wave using drop power hair
Send, so, can effectively ensure not influenceing the coverage of Traffic Channel while minizone PDCCH channel disturbances are reduced.
Here, it is necessary to differ all standing carrier wave of adjacent sectors, PDCCH channels between neighbor cell can effectively be reduced
Interference.
Step 102, after the edge UE access networks of cell, network side using sector where the edge UE all standing
Carrier wave is that the edge UE configures main carrier, and it is cross-carrier scheduling mode to configure the scheduling authorization mode of the edge UE；
After the center UE access networks of cell, network side is using the non-all standing carrier wave of sector where the center UE
The center UE configures main carrier, if including all standing carrier wave in the polymerization carrier wave of the center UE, according to the center
PDCCH load states in the channel quality and the polymerization carrier wave of each polymerization carrier wave of UE on all standing carrier wave, it is determined that being
It is no that cross-carrier scheduling mode is used to the center UE.
Explanation is needed exist for, this step is after UE access networks, by according to the location of UE, to be again
UE configures main carrier.
In this step, the main carrier of edge UE is configured on all standing carrier wave, and allow edge UE using cross-carrier
Scheduling mode, it is ensured that edge UE has enough traffic channel resources, further, since all standing carrier wave not phase between adjacent cell
Together, therefore PDCCH channel disturbances between neighbor cell can be effectively reduced.
Here, it is contemplated that the characteristics of relative demodulation threshold surplus of the reception SNR of center UE is larger in practical application, such as
This, can be sent in the range of the PDCCH demodulation performances for ensureing this center of housing estate UE using this cell PDCCH channels are reduced
The method of power reduces the interference to the adjacent cell PDCCH channels on identical frequency, so as to improve the reception at adjacent cell edge
SNR.Therefore, in this step, the main carrier of center UE is configured on non-all standing carrier wave.Also, in order to avoid there is PDCCH
The problem of overload, when including all standing carrier wave in the polymerization carrier wave of center UE here, it is considered in the conceived case, to the greatest extent
Cross-carrier scheduling is carried out possibly by cross-carrier scheduling, the i.e. Traffic Channel to the main covering carrier wave in UE polymerization carrier waves, is come
Avoid the problem of PDCCH overloads.
It is preferred that can determine whether to use cross-carrier scheduling mode bag to the center UE using following two methods
Include：
The channel quality indicator (CQI) of each polymerization carrier wave reported according to the center UE, determines the center UE in each institute
State the CCE polymerization grades of required use when being sent on the PDCCH of polymerization carrier wave；
If the CCE occupancies in the polymerization carrier wave on all standing carrier wave are less than default occupancy thresholding, and described
The CCE of non-all standing carrier wave gathers in the CCE polymerization grades and the polymerization carrier wave of all standing carrier wave in polymerization carrier wave
Close grade all same, it is determined that do not use cross-carrier scheduling mode；
If the CCE occupancies in the polymerization carrier wave on all standing carrier wave are less than the occupancy thresholding, and described poly-
The CCE polymerization grades for closing all standing carrier wave in carrier wave gather less than the CCE of non-all standing carrier wave in the polymerization carrier wave
Close grade, it is determined that do not use cross-carrier scheduling mode, but indicate all standing of the scheduler priority in the polymerization carrier wave to carry
UE is dispatched on ripple；
If the CCE polymerization grades of all standing carrier wave are non-more than in the polymerization carrier wave in the polymerization carrier wave covered entirely
The CCE polymerization grades of lid carrier wave, it is determined that use cross-carrier scheduling mode.
Explanation is needed exist for, in such scheme, if the CCE occupancies in the polymerization carrier wave on all standing carrier wave
Less than the occupancy thresholding, then illustrate more idle on all standing carrier wave.
If non-all standing in the CCE polymerization grades and the polymerization carrier wave of all standing carrier wave in the polymerization carrier wave
The CCE polymerization grades all same of carrier wave, then explanation is using all standing carrier wave and non-all standing carrier wave in the polymerization carrier wave
, it is necessary to the resource for using is identical when being scheduled.
If the CCE polymerization grades of all standing carrier wave are non-less than in the polymerization carrier wave in the polymerization carrier wave covered entirely
The CCE polymerization grades of lid carrier wave, then illustrate to be scheduled, it is necessary to use using all standing carrier wave in the polymerization carrier wave
Resource is less.
If the CCE polymerization grades of all standing carrier wave are non-more than in the polymerization carrier wave in the polymerization carrier wave covered entirely
The CCE polymerization grades of lid carrier wave, then illustrate to be scheduled, it is necessary to use using non-all standing carrier wave in the polymerization carrier wave
Resource it is less, at this point it is possible to by being economized on resources using cross-carrier scheduling mode, the load of reduction PDCCH.
It is preferred that for the non-all standing carrier wave in the polymerization carrier wave, determining PDCCHs of the center UE in the carrier wave
The CCE polymerization grades of required use during upper transmission, can specifically be realized using following step：
First, the CQI of the carrier wave for the center UE being reported is converted into the letter under simulation white Gaussian noise awgn channel
Make an uproar and compare SNRd。
The those skilled in the art that are implemented as of this step are grasped, and be will not be repeated here.
Then, by the SNRdR is subtracted, the SNR is obtaineddEquivalent SNR under awgn channel；Wherein, the r is institute
Drop power and the normal power difference are stated, unit is dB values.
Finally, according to the equivalent SNR, needs when determining that the center UE is sent using the drop power on PDCCH
The CCE polymerization grades of use.
The those skilled in the art that are implemented as of this step are grasped, and be will not be repeated here.
For all standing carrier wave in the polymerization carrier wave, when determining that the center UE sends on the PDCCH of the carrier wave
The method of the CCE polymerization grades of required use is similar to the above-mentioned method used to non-all standing carrier wave, and difference is, right
For all standing carrier wave, due to not dropping power, therefore need not perform equivalent SNR the step of converting, specific method is ability
Field technique personnel grasped, and be will not be repeated here.
It is preferred that the occupancy thresholding is less than for the CCE occupancies on all standing carrier wave in the polymerization carrier wave, and
In the polymerization carrier wave CCE polymerization grades of all standing carrier wave less than it is described polymerization carrier wave in non-all standing carrier wave it is described
The situation of CCE polymerization grades, while it is determined that not using cross-carrier scheduling mode, can also further indicate scheduler priority
The center UE is dispatched on all standing carrier wave in the polymerization carrier wave.
In actual applications, after UE access networks, network side will be according to default Reference Signal Received Power（RSRP）
Thresholding, determines that the UE is edge UE or center UE.
Here, determine the specific method that the UE is edge UE or center UE, can be realized using prior art.Preferably
Ground, wherein the specific method to set up of the RSRP thresholdings of institute's foundation can be realized using following two methods：
Method one：
It is determined that when sending PDCCH with the maximum CCE polymerization grades of system on the access main carrier of the UE, it is resulting
RSRP statistics of the PDCCH false dismissal probabilities less than or equal to 1%；The access main carrier is one of sector where the UE non-
All standing carrier wave；
By the corresponding RSRP of point that probability on the cumulative distribution function CDF curves corresponding to the RSRP statisticses is 5%
Value is defined as the RSRP thresholdings.
Method two：It is determined that when sending PDCCH with the maximum CCE polymerization grades of system on the access main carrier of the UE,
RSRP statistics of the resulting PDCCH false dismissal probabilities less than or equal to 1%；The access main carrier is sector where the UE
A non-all standing carrier wave；
Minimum RSRP values in the RSRP statisticses are defined as the RSRP thresholdings.
Further, the RSRP thresholdings can also be adjusted according to edge UE numbers with the ratio of total UE numbers in sector
Whole, the ratio is lower, and it is higher that RSRP threshold values can be set.
In sum, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., should be included in of the invention
Within protection domain.
Claims (7)
1. it is a kind of to reduce the method that down control channel is disturbed, it is characterised in that including：
Network side is respectively configured all standing carrier wave for being exclusively used in providing the network coverage for each sector in advance, wherein, adjacent sectors
The all standing carrier wave differ；The down control channel PDCCH on all standing carrier wave of each sector is configured using just
Normal power sends, and configures PDCCH of each sector on other member carriers in addition to all standing carrier wave and uses default drop
Power sends；The drop power is less than the normal power；
After the edge customer equipment UE access network of cell, network side utilizes all standing carrier wave of sector where the edge UE
For the edge UE configures main carrier, and it is cross-carrier scheduling mode to configure the scheduling authorization mode of the edge UE；
After the center UE access networks of cell, network side is described using the non-all standing carrier wave of sector where the center UE
Center UE configures main carrier, if including all standing carrier wave in the polymerization carrier wave of the center UE, according to the center UE's
PDCCH load states in the channel quality and the polymerization carrier wave of each polymerization carrier wave on all standing carrier wave, it is determined whether right
The center UE uses cross-carrier scheduling mode；
It is described to determine whether to include the center UE using cross-carrier scheduling mode：
The channel quality indicator (CQI) of each polymerization carrier wave reported according to the center UE, determines the center UE each described poly-
Close the control channel unit CCE polymerization grades of required use when being sent on the PDCCH of carrier wave；
If the CCE occupancies in the polymerization carrier wave on all standing carrier wave are less than default occupancy thresholding, and the polymerization
CCE polymerizations of non-all standing carrier wave etc. in the CCE polymerization grades and the polymerization carrier wave of all standing carrier wave in carrier wave
Level all same, it is determined that do not use cross-carrier scheduling mode；
If the CCE occupancies in the polymerization carrier wave on all standing carrier wave are less than the occupancy thresholding, and the polymerization is carried
The CCE polymerization grades of all standing carrier wave are less than CCE polymerizations of non-all standing carrier wave in the polymerization carrier wave etc. in ripple
Level, it is determined that do not use cross-carrier scheduling mode；
If the CCE polymerization grades of all standing carrier wave are carried more than non-all standing in the polymerization carrier wave in the polymerization carrier wave
The CCE polymerization grades of ripple, it is determined that use cross-carrier scheduling mode.
2. method according to claim 1, it is characterised in that the default drop power meets：Using the drop power
It is transmitted resulting actual snr of received signal SNR0Demodulated more than the corresponding highest of used demodulation modes is sent
Thresholding SNRuWith default margin value a's and.
3. method according to claim 1, it is characterised in that methods described is further included：After UE access networks, net
Network lateral root determines that the UE is edge UE or center UE according to default Reference Signal Received Power RSRP thresholdings.
4. method according to claim 3, it is characterised in that the method to set up of the RSRP thresholdings is：
It is determined that when sending PDCCH with the maximum CCE polymerization grades of system on the access main carrier of the UE, it is resulting
RSRP statistics of the PDCCH false dismissal probabilities less than or equal to 1%；The access main carrier is one of sector where the UE non-
All standing carrier wave；
By the corresponding RSRP values of point that probability on the cumulative distribution function CDF curves corresponding to the RSRP statisticses is 5%
It is defined as the RSRP thresholdings.
5. method according to claim 3, it is characterised in that the method to set up of the RSRP thresholdings is：It is determined that described
When sending PDCCH with the maximum CCE polymerization grades of system on the access main carrier of UE, resulting PDCCH false dismissal probabilities are less than
RSRP statisticses equal to 1%；It is described to access the non-all standing carrier wave that main carrier is sector where the UE；
Minimum RSRP values in the RSRP statisticses are defined as the RSRP thresholdings.
6. method according to claim 5, it is characterised in that if the CCE in the polymerization carrier wave on all standing carrier wave
Occupancy is less than the CCE polymerization grades of all standing carrier wave in the occupancy thresholding, and the polymerization carrier wave less than described
The CCE polymerization grades of non-all standing carrier wave, then while it is determined that not using cross-carrier scheduling mode, refer in polymerization carrier wave
Show that scheduler priority dispatches the center UE on all standing carrier wave in the polymerization carrier wave.
7. method according to claim 1, it is characterised in that for the non-all standing carrier wave in the polymerization carrier wave, really
The CCE polymerization grades of required use include when the fixed center UE sends on the PDCCH of the carrier wave：
The CQI of the carrier wave that the center UE is reported is converted into the signal to noise ratio snr under simulation white Gaussian noise awgn channeld；
By the SNRdR is subtracted, the SNR is obtaineddEquivalent SNR under awgn channel；Wherein, the r for it is described drop power with
The normal power difference, unit is dB values；
According to the equivalent SNR, the CCE for using is needed when determining that the center UE is sent using the drop power on PDCCH
Polymerization grade.
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| CN106454885A (en) * | 2015-08-10 | 2017-02-22 | 北京大学 | Method and apparatus for determining aggregation grade of physical downlink control channel |
| CN106559793B (en) * | 2015-09-25 | 2019-12-06 | 中国电信股份有限公司 | Method and system for avoiding interference in cross-carrier scheduling in isomorphic network |
| CN110752886B (en) * | 2018-07-23 | 2022-02-15 | 成都鼎桥通信技术有限公司 | Method and device for determining CCE aggregation level |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101730240A (en) * | 2008-10-14 | 2010-06-09 | 鼎桥通信技术有限公司 | Method for selecting access carrier of N-frequency point cell |
| WO2012045584A1 (en) * | 2010-10-05 | 2012-04-12 | Alcatel Lucent | Interference mitigation on a physical downlink control channel |
| CN102625336A (en) * | 2012-03-02 | 2012-08-01 | 中兴通讯股份有限公司 | Interference management method and device in heterogenous network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101730240A (en) * | 2008-10-14 | 2010-06-09 | 鼎桥通信技术有限公司 | Method for selecting access carrier of N-frequency point cell |
| WO2012045584A1 (en) * | 2010-10-05 | 2012-04-12 | Alcatel Lucent | Interference mitigation on a physical downlink control channel |
| CN102625336A (en) * | 2012-03-02 | 2012-08-01 | 中兴通讯股份有限公司 | Interference management method and device in heterogenous network |
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