CN103856982A - Method for reducing downlink control channel disturbance - Google Patents
Method for reducing downlink control channel disturbance Download PDFInfo
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- CN103856982A CN103856982A CN201210510841.8A CN201210510841A CN103856982A CN 103856982 A CN103856982 A CN 103856982A CN 201210510841 A CN201210510841 A CN 201210510841A CN 103856982 A CN103856982 A CN 103856982A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000013475 authorization Methods 0.000 claims abstract description 7
- 238000006116 polymerization reaction Methods 0.000 claims description 93
- 230000005540 biological transmission Effects 0.000 claims description 11
- 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
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- 238000004220 aggregation Methods 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000006855 networking Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 238000010295 mobile communication 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
The invention discloses a method for reducing downlink control channel disturbance. The method includes the steps that full coverage carrier waves special for providing network coverage are configured for all sectors respectively in advance, and the full coverage carrier waves of every two adjacent sectors are different; PDCCHs on the full coverage carrier waves of all the configured sectors transmit in a normal power mode, and PDCCHs on other carrier waves except the full coverage carrier waves of all the configured sectors transmit in a power reduction mode; after edge UE gets access to a network, a network side uses the full coverage carrier waves of the sector where the edge UE is located for configuring main carrier waves for the edge UE and sets the dispatch authorization mode as a cross-carrier-wave dispatch mode; after center UE gets access to the network, the non-full coverage carrier waves of the sector where the center UE is located are used for configuring main carrier waves for the center UE, and if aggregation carrier waves of the center UE comprise the full coverage carrier waves, the adoption of cross-carrier-wave dispatch is determined according to channel quality of the aggregation carrier waves and load conditions of the PDCCHs on the full coverage carrier waves. The method can reduce PDCCH channel disturbance among cells and achieve PDCCH load balancing under the condition of not affecting a service channel coverage range.
Description
Technical field
The present invention relates to mobile communication technology, particularly relate to a kind of method that down control channel disturbs that reduces.
Background technology
In LTE system, downlink physical control channel (PDCCH, Physical Down Control Channel) is for carrying out the mandate of Traffic Channel.In the LTE of identical networking system, take identical running time-frequency resource with the downlink physical control channel (PDCCH, Physical Down Control Channel) of frequency Shang Ge community and carry out data transmission.The suffered interference ratio of PDCCH of Cell Edge User equipment (UE) is larger.In order to take into account demodulation performance and the spectrum efficiency under disturbance level, standard definition 4 kinds of control channel unit (Control Channel Element, CCE) polymerization grade is transmitted Downlink Control Information (Downlink Control Information, DCI), 1,2,4 and 8 CCE of corresponding use transmits 1 DCI respectively.Larger grade of polymerization, and antijamming capability is stronger, but the resource taking is also more.
Under the typical scene providing at 3GPP, the demodulation threshold of PDCCH channel wants high a lot of with respect to PBCH, and when identical networking, the interference ratio of minizone PDCCH channel is more serious, even if adopt maximum polymerization grade also possibly cannot meet the requirement of demodulation performance.Therefore, PDCCH channel may become the bottleneck of network performance, can cause network KPI index to be affected, the signalling interactive process especially occurring at edge, and access switching waits the probability that generation is failed to improve.
Along with the evolution of LTE, when LTE-A system is keeping backward compatibility LTE, introduce carrier aggregation technology.Adopt carrier aggregation, a UE can configure multiple carrier waves.Supporting that, in the LTE-A system of carrier aggregation, scheduling authorization is supported two kinds of send modes, i.e. this carrier dispatching (Same CC) and across carrier dispatching (Cross CC).Wherein, this carrier dispatching refers to that the descending distribution of a carrier wave and uplink authorization dispatched by the PDCCH of this carrier wave; Refer to that across carrier dispatching the descending distribution of a carrier wave and uplink authorization can be dispatched by the PDCCH of other carrier waves.The interference that solves minizone PDCCH channel across being introduced as of carrier dispatching provides new approach.
A kind of scheme that reduces minizone PDCCH channel disturbance across carrier dispatching of utilizing the in the situation that of identical networking has been proposed at present.This scheme, for heterogeneous network scene, has all configured carrier aggregation at macro base station and Pico base station.For two polymerization carrier waves for UE configuration, macro base station adopts normal power to send on a carrier wave therein, adopts the mode of falling power to send on another carrier wave, makes macro base station fall the interference reduction to Pico base station on the carrier wave sending after power; In the UE of cell range extended area, adopt across carrier dispatching, the center UE of Pico base station or macro base station is not adopted across carrier dispatching.
Such scheme utilization can effectively be evaded the interference between macro base station and Pico base station down control channel to a certain extent across carrier dispatching, but in this scheme, not only power being fallen in the PDCCH on carrier wave sends, to the Traffic Channel on carrier wave be PDSCH also adopted fall power send, like this, the coverage of Traffic Channel, by reduced, has also reduced the received signal to noise ratio (SNR) of Traffic Channel in coverage simultaneously, is not suitable for isomorphism macro base station networking scene.In addition, in such scheme, the PDCCH resource of central user is distributed to the mode that has only adopted this carrier dispatching, which is unfavorable for PDCCH load balancing, may cause the PDCCH load on the carrier wave that adopts normal power transmission overweight.
As can be seen here, utilize the scheme that reduces minizone PDCCH channel disturbance across carrier dispatching, exist coverage, the interior Traffic Channel of reduction coverage of dwindling Traffic Channel to receive SNR and the overweight problem of part PDCCH load.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that down control channel disturbs that reduces, and the method can be in the situation that not affecting Traffic Channel coverage, effectively reduces minizone PDCCH channel disturbance, and can realize PDCCH load balance.
In order to achieve the above object, the technical scheme that the present invention proposes is:
Reduce the method that down control channel disturbs, comprising:
For each sector, configure dedicated is in all standing carrier wave that the network coverage is provided respectively in advance for network side, and wherein, the described all standing carrier wave of adjacent sectors is not identical; The down control channel PDCCH configuring on the described all standing carrier wave of each sector adopts normal power to send, and configures PDCCH on other member carriers except described all standing carrier wave of each sector and adopts the default power transmission of falling; The described power that falls is less than described normal power;
When after the edge customer equipment UE access network of community, it is described edge UE configuration main carrier that network side utilizes all standing carrier wave of sector, UE place, described edge, and the scheduling authorization mode that configures described edge UE is for across carrier scheduling mode;
When after the UE access network of the center of community, it is described center UE configuration main carrier that network side utilizes the non-all standing carrier wave of sector, UE place, described center, if comprise all standing carrier wave in the polymerization carrier wave of described center UE,, according to the PDCCH load state on all standing carrier wave in the channel quality of each polymerization carrier wave of described center UE and described polymerization carrier wave, determine whether described center UE to adopt across carrier scheduling mode.
In sum, the method that the present invention proposes, introduce non-all standing carrier wave, and only the PDCCH on non-all standing carrier wave is adopted and falls power transmission, the main carrier of center UE is configured on non-all standing carrier wave, can effectively guarantees not affect the coverage of Traffic Channel in reducing minizone PDCCH channel disturbance; Simultaneously, for each sector configuration all standing carrier wave, make all standing carrier wave of adjacent sectors not identical, the main carrier of edge UE is configured on all standing carrier wave, and edge UE can be adopted across carrier scheduling mode, be that edge UE can use PDSCH and the PUSCH channel on the non-all standing carrier wave of PDCCH channel dispatch on main carrier, can guarantee that edge UE has enough traffic channel resources, can effectively reduce PDCCH channel disturbance between neighbor cell simultaneously; In addition, for center UE, according to the channel quality of its each polymerization carrier wave with and polymerization carrier wave in PDCCH load state on all standing carrier wave, determine whether described center UE to adopt across carrier scheduling mode, so can utilize the overweight problem of PDCCH load of effectively avoiding this carrier dispatching to occur across carrier dispatching.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the embodiment of the present invention one.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
Core concept of the present invention is: for each sector, arranging to be exclusively used in provides all standing of network coverage carrier wave, and makes all standing carrier wave of adjacent sectors not identical; Adopt normal power to send for the PDCCH channel on all standing carrier wave, adopt and fall power transmission for the PDCCH channel of non-all standing carrier wave; The scheduling that all standing carrier wave of each sector is mainly responsible for this sector-edge UE provides PDCCH resource, disturb to reach to reduce between sector-edge PDCCH, improve the object that PDCCH channel receives SNR, simultaneously owing to only power being fallen in the PDCCH on non-all standing carrier wave, do not reduce the power of the Traffic Channel of non-all standing carrier wave, the coverage that so can guarantee Traffic Channel is not reduced, and can not reduce the reception SNR of Traffic Channel in coverage; In addition, in the time that center, sector UE is dispatched, according to PDCCH channel loading situation and channel quality on each polymerization carrier wave of this center UE, determine whether described center UE to adopt across carrier scheduling mode, the overweight problem of PDCCH load that so can avoid this carrier dispatching to occur, realizes the load balance of PDCCH.
Fig. 1 is the schematic flow sheet of the embodiment of the present invention one, and as shown in Figure 1, this embodiment mainly comprises:
For each sector, configure dedicated is in all standing carrier wave that the network coverage is provided respectively in advance for step 101, network side, and wherein, the described all standing carrier wave of adjacent sectors is not identical; The PDCCH configuring on the described all standing carrier wave of each sector adopts normal power to send, and configures PDCCH on other member carriers except described all standing carrier wave of each sector and adopts the default power transmission of falling.
Here,, fall power and need to be less than described normal power.Preferably, describedly default fall power and need to meet: described in utilization, fall power and send obtained actual snr of received signal SINR
0be greater than the highest demodulation threshold SINR corresponding to demodulation modes that transmission adopts
uwith default margin value a's and.
In this step, introduce non-all standing carrier wave, and only the PDCCH on non-all standing carrier wave has been adopted and falls power transmission, like this, can effectively guarantee not affect the coverage of Traffic Channel in reducing minizone PDCCH channel disturbance.
Here, need to make all standing carrier wave of adjacent sectors not identical, can effectively reduce PDCCH channel disturbance between neighbor cell.
Step 102, when after the edge of community UE access network, it is described edge UE configuration main carrier that network side utilizes all standing carrier wave of sector, UE place, described edge, and the scheduling authorization mode that configures described edge UE is for across carrier scheduling mode;
When after the UE access network of the center of community, it is described center UE configuration main carrier that network side utilizes the non-all standing carrier wave of sector, UE place, described center, if comprise all standing carrier wave in the polymerization carrier wave of described center UE,, according to the PDCCH load state on all standing carrier wave in the channel quality of each polymerization carrier wave of described center UE and described polymerization carrier wave, determine whether described center UE to adopt across carrier scheduling mode.
Here it should be noted that, this step is when after UE access network, and by according to the residing position of UE, coming is UE configuration main carrier again.
In this step, the main carrier of edge UE is configured on all standing carrier wave, and edge UE can be adopted across carrier scheduling mode, can guarantee that edge UE has enough traffic channel resources, in addition, because all standing carrier wave between adjacent cell is not identical, therefore can effectively reduce PDCCH channel disturbance between neighbor cell.
Here, consider the larger feature of relative demodulation threshold surplus of the reception SNR of center UE in practical application, so, can be in the scope of PDCCH demodulation performance that guarantees this center of housing estate UE, adopt the method that reduces this community PDCCH channel transmission power, reduce the interference to the adjacent cell PDCCH channel on identical frequency, thereby improve the reception SNR at adjacent cell edge.Therefore,, in this step, the main carrier of center UE is configured on non-all standing carrier wave.And, for fear of the problem that occurs that PDCCH load is overweight, here while comprising all standing carrier wave in the polymerization carrier wave of center UE, consider possible in the situation that, pass through across carrier dispatching as much as possible, the Traffic Channel of the main covering carrier wave in UE polymerization carrier wave is carried out across carrier dispatching, avoid the overweight problem of PDCCH load.
Preferably, can adopt following two kinds of methods to determine whether described center UE to adopt and comprise across carrier scheduling mode:
The channel quality indicator (CQI) of the each polymerization carrier wave reporting according to described center UE, determines the CCE polymerization grade of required employing when described center UE sends on the PDCCH of each described polymerization carrier wave;
If the CCE occupancy in described polymerization carrier wave on all standing carrier wave is lower than the default thresholding that takies, and the described CCE polymerization grade of non-all standing carrier wave is all identical in the described CCE polymerization grade of all standing carrier wave and described polymerization carrier wave in described polymerization carrier wave, determines and do not adopt across carrier scheduling mode;
If the CCE occupancy in described polymerization carrier wave on all standing carrier wave is lower than the described thresholding that takies, and in described polymerization carrier wave, the described CCE polymerization grade of all standing carrier wave is less than the described CCE polymerization grade of non-all standing carrier wave in described polymerization carrier wave, determine and do not adopt across carrier scheduling mode, but indication scheduler is preferentially dispatched UE on all standing carrier wave in described polymerization carrier wave;
If the described CCE polymerization grade of all standing carrier wave is greater than the described CCE polymerization grade of non-all standing carrier wave in described polymerization carrier wave in described polymerization carrier wave, determines and adopt across carrier scheduling mode.
Here it should be noted that, in such scheme, if the CCE occupancy on all standing carrier wave, lower than the described thresholding that takies, illustrates on all standing carrier wave more idle in described polymerization carrier wave.
If in the described CCE polymerization grade of all standing carrier wave and described polymerization carrier wave, the described CCE polymerization grade of non-all standing carrier wave is all identical in described polymerization carrier wave, explanation utilizes in described polymerization carrier wave when all standing carrier wave and non-all standing carrier wave are dispatched, and needs the resource that uses identical.
If the described CCE polymerization grade of all standing carrier wave is less than the described CCE polymerization grade of non-all standing carrier wave in described polymerization carrier wave in described polymerization carrier wave, explanation utilizes all standing carrier wave in described polymerization carrier wave to dispatch, and needs the resource of use still less.
If the described CCE polymerization grade of all standing carrier wave is greater than the described CCE polymerization grade of non-all standing carrier wave in described polymerization carrier wave in described polymerization carrier wave, explanation utilizes non-all standing carrier wave in described polymerization carrier wave to dispatch, need the resource of use still less, now, can economize on resources across carrier scheduling mode by adopting, reduce the load of PDCCH.
Preferably, for the non-all standing carrier wave in described polymerization carrier wave, determine the CCE polymerization grade of required employing when described center UE sends on the PDCCH of this carrier wave, specifically can adopt following step to realize:
The CQI of this carrier wave first, described center UE being reported is converted into the signal to noise ratio snr under simulation white Gaussian noise awgn channel
d.
The specific implementation of this step, by those skilled in the art are grasped, does not repeat them here.
Then, by described SNR
ddeduct r, obtain described SNR
dequivalent SNR under awgn channel; Wherein, described r falls power and described normal power difference described in being, unit is dB value.
Finally, according to described equivalent SNR, determine that described center UE falls the CCE polymerization grade that need to adopt when power sends on PDCCH described in utilizing.
The specific implementation of this step, by those skilled in the art are grasped, does not repeat them here.
For all standing carrier wave in described polymerization carrier wave, the method of determining the CCE polymerization grade of required employing when described center UE sends on the PDCCH of this carrier wave is similar to the above-mentioned method that non-all standing carrier wave is adopted, difference is, for all standing carrier wave, owing to not falling power, therefore do not need to carry out the step that equivalent SNR transforms, concrete grammar, by those skilled in the art are grasped, does not repeat them here.
Preferably, for the CCE occupancy on all standing carrier wave in described polymerization carrier wave lower than the described thresholding that takies, and in described polymerization carrier wave, the described CCE polymerization grade of all standing carrier wave is less than the situation of the described CCE polymerization grade of non-all standing carrier wave in described polymerization carrier wave, determine do not adopt across carrier scheduling mode in, can also further indicate scheduler preferentially on all standing carrier wave in described polymerization carrier wave, to dispatch described center UE.
In actual applications, when after UE access network, network side, by according to default Reference Signal Received Power (RSRP) thresholding, determines that described UE is UEHuo center, edge UE.
Here determine that described UE is the concrete grammar of UEHuo center, edge UE, can adopt existing techniques in realizing.Preferably, wherein the concrete method to set up of the RSRP thresholding of institute's foundation can adopt following two kinds of methods to realize:
Method one:
Determine that when the maximum CCE polymerization grade with system sends PDCCH on the access main carrier of described UE, the PDCCH false dismissal probability obtaining is less than or equal to 1% RSRP statistics; Described access main carrier is the non-all standing carrier wave of of sector, described UE place;
RSRP value corresponding to point that is 5% by probability on corresponding described RSRP statistics cumulative distribution function CDF curve is defined as described RSRP thresholding.
Method two: determine that when the maximum CCE polymerization grade with system sends PDCCH on the access main carrier of described UE, the PDCCH false dismissal probability obtaining is less than or equal to 1% RSRP statistics; Described access main carrier is the non-all standing carrier wave of of sector, described UE place;
Minimum RSRP value in described RSRP statistics is defined as to described RSRP thresholding.
Further, described RSRP thresholding also can be adjusted according to the ratio of total UE number in edge UE number and sector, and this ratio is lower, and it is higher that RSRP threshold value can arrange.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. reduce the method that down control channel disturbs, it is characterized in that, comprising:
For each sector, configure dedicated is in all standing carrier wave that the network coverage is provided respectively in advance for network side, and wherein, the described all standing carrier wave of adjacent sectors is not identical; The down control channel PDCCH configuring on the described all standing carrier wave of each sector adopts normal power to send, and configures PDCCH on other member carriers except described all standing carrier wave of each sector and adopts the default power transmission of falling; The described power that falls is less than described normal power;
When after the edge customer equipment UE access network of community, it is described edge UE configuration main carrier that network side utilizes all standing carrier wave of sector, UE place, described edge, and the scheduling authorization mode that configures described edge UE is for across carrier scheduling mode;
When after the UE access network of the center of community, it is described center UE configuration main carrier that network side utilizes the non-all standing carrier wave of sector, UE place, described center, if comprise all standing carrier wave in the polymerization carrier wave of described center UE,, according to the PDCCH load state on all standing carrier wave in the channel quality of each polymerization carrier wave of described center UE and described polymerization carrier wave, determine whether described center UE to adopt across carrier scheduling mode.
2. method according to claim 1, is characterized in that, the described default power that falls meets: described in utilization, fall power and send obtained actual snr of received signal SIN R
0be greater than the highest demodulation threshold SINR corresponding to demodulation modes that transmission adopts
uwith default margin value a's and.
3. method according to claim 1, is characterized in that, described method further comprises: when after UE access network, network side, according to default Reference Signal Received Power RSRP thresholding, determines that described UE is UEHuo center, edge UE.
4. method according to claim 3, is characterized in that, the method to set up of described RSRP thresholding is:
Determine that when the maximum CCE polymerization grade with system sends PDCCH on the access main carrier of described UE, the PDCCH false dismissal probability obtaining is less than or equal to 1% RSRP statistics; Described access main carrier is the non-all standing carrier wave of of sector, described UE place;
RSRP value corresponding to point that is 5% by probability on corresponding described RSRP statistics cumulative distribution function CDF curve is defined as described RSRP thresholding.
5. method according to claim 3, it is characterized in that, the method to set up of described RSRP thresholding is: determine that when the maximum CCE polymerization grade with system sends PDCCH on the access main carrier of described UE, the PDCCH false dismissal probability obtaining is less than or equal to 1% RSRP statistics; Described access main carrier is the non-all standing carrier wave of of sector, described UE place;
Minimum RSRP value in described RSRP statistics is defined as to described RSRP thresholding.
6. method according to claim 1, is characterized in that, described in determine whether described center UE to adopt and comprise across carrier scheduling mode:
The channel quality indicator (CQI) of the each polymerization carrier wave reporting according to described center UE, determines the control channel unit CCE polymerization grade of required employing when described center UE sends on the PDCCH of each described polymerization carrier wave;
If the CCE occupancy in described polymerization carrier wave on all standing carrier wave is lower than the default thresholding that takies, and the described CCE polymerization grade of non-all standing carrier wave is all identical in the described CCE polymerization grade of all standing carrier wave and described polymerization carrier wave in described polymerization carrier wave, determines and do not adopt across carrier scheduling mode;
If the CCE occupancy in described polymerization carrier wave on all standing carrier wave is lower than the described thresholding that takies, and the described CCE polymerization grade of all standing carrier wave is less than the described CCE polymerization grade of non-all standing carrier wave in described polymerization carrier wave in described polymerization carrier wave, determines and do not adopt across carrier scheduling mode;
If the described CCE polymerization grade of all standing carrier wave is greater than the described CCE polymerization grade of non-all standing carrier wave in described polymerization carrier wave in described polymerization carrier wave, determines and adopt across carrier scheduling mode.
7. method according to claim 6, it is characterized in that, if the CCE occupancy in described polymerization carrier wave on all standing carrier wave is lower than the described thresholding that takies, and in described polymerization carrier wave, the described CCE polymerization grade of all standing carrier wave is less than the described CCE polymerization grade of non-all standing carrier wave in described polymerization carrier wave, determine do not adopt across carrier scheduling mode in, indication scheduler preferentially on all standing carrier wave in described polymerization carrier wave, dispatch described center UE.
8. method according to claim 6, is characterized in that, for the non-all standing carrier wave in described polymerization carrier wave, determines that the CCE polymerization grade of required employing when described center UE sends on the PDCCH of this carrier wave comprises:
The CQI of this carrier wave that described center UE is reported is converted into the signal to noise ratio snr under simulation white Gaussian noise awgn channel
d;
By described SNR
ddeduct r, obtain described SNR
dequivalent SNR under awgn channel; Wherein, described r falls power and described normal power difference described in being, unit is dB value;
According to described equivalent SNR, determine that described center UE falls the CCE polymerization grade that need to adopt when power sends on PDCCH described in utilizing.
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| CN201210510841.8A CN103856982B (en) | 2012-12-03 | 2012-12-03 | A kind of method for reducing down control channel interference |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN106559793A (en) * | 2015-09-25 | 2017-04-05 | 中国电信股份有限公司 | It is cross-carrier in a kind of homogenous networks to dispatch the method and system for evading interference |
| CN110752886A (en) * | 2018-07-23 | 2020-02-04 | 成都鼎桥通信技术有限公司 | Method and device for determining CCE aggregation level |
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| 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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| 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 |
|---|---|---|---|---|
| CN106454885A (en) * | 2015-08-10 | 2017-02-22 | 北京大学 | Method and apparatus for determining aggregation grade of physical downlink control channel |
| CN106559793A (en) * | 2015-09-25 | 2017-04-05 | 中国电信股份有限公司 | It is cross-carrier in a kind of homogenous networks to dispatch the method and system for evading interference |
| CN110752886A (en) * | 2018-07-23 | 2020-02-04 | 成都鼎桥通信技术有限公司 | Method and device for determining CCE aggregation level |
| 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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| CN103856982B (en) | 2017-05-31 |
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