CN102638805A - Method and equipment for promoting interference coordination of heterogeneous network - Google Patents
Method and equipment for promoting interference coordination of heterogeneous network Download PDFInfo
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- CN102638805A CN102638805A CN2011100370077A CN201110037007A CN102638805A CN 102638805 A CN102638805 A CN 102638805A CN 2011100370077 A CN2011100370077 A CN 2011100370077A CN 201110037007 A CN201110037007 A CN 201110037007A CN 102638805 A CN102638805 A CN 102638805A
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- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
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Abstract
The invention provides a method for promoting interference coordination of a heterogeneous network. The method comprises the following steps that: an LPN (Low Power Node) acquires the information of spatial position of the LPN is in coverage area of at least one macro cell; and the LPN informs the information of the spatial position of the LPN is in coverage area of at least one macro cell to the at least one macro cell according to identifier of the at least one macro cell. The invention further discloses other methods for promoting the interference coordination of the heterogeneous network, as well as a device for promoting the interference coordination of the heterogeneous network. According to the scheme, a macro base station and the LPN can be forced to use different spatial position information to reduce strong interference between the macro base station and the LPN.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of promotion heterogeneous network disturbance coordination method and equipment.
Background technology
Introduced the heterogeneous network technology among the LTE-A.Heterogeneous network is meant that low power nodes (LPN, Low Power Node) is placed in the macro base station coverage area by cloth, forms the heterogeneous system with the different node types that cover.Because the geographic distance between access point and the quilt subscriber equipment (UE) of serving has been dwindled, effectively elevator system throughput and network whole efficiency.The macro base station coverage is by original single subdistrict; Split into some Microcells owing to laying some LPN; The same frequency range several times that are re-used, system can obtain huge cell splitting gain, but since the coverage of LPN be in fully in the coverage of macro base station; A large amount of edge customers can occur thus, how solve macrocell becomes the main consideration of present LTE-A heterogeneous network technology to the interference of LPN sub-district problem.
The solution macrocell mainly is divided into time domain and frequency domain two big classes to the method for LPN area interference in the prior art.
The method of time domain is that macrocell becomes approximate blank subframe (ABS, Almost Blank Subframe) with some locational sub-frame configuration, and on these approximate blank subframe, macrocell will not send data.Like this, the interference that the subframe of Microcell on correspondence position receives will be very little, and the subframe on the said correspondence position is as the interference coordination subframe.Microcell can provide service for its UE that is in cell edge on the subframe of these interference coordinations.
The method of frequency domain and the method for time domain are very similar.Do not launch data on macrocell some frequency range in its system bandwidth, like this, the interference that Microcell receives on the frequency range of correspondence is very little, and said frequency range is as the interference coordination frequency range.Microcell can provide service for its UE that is in cell edge on the frequency range of these interference coordinations.
This shows that in the prior art, macrocell is for fear of the strong jamming to Microcell; Need on some time domains or frequency domain resource, not launch data, in other words, it is disabled that macrocell has the part resource; This can influence the performance of macrocell, especially in the performance of data channel.
A kind of in addition macrocell that prevents of the prior art is to let the corresponding LPN of the Microcell macro base station corresponding with macrocell use different spatial positions information (like PMI) to carry out scheduled transmission to the strongly disturbing method of Microcell.But how to guarantee that macro base station and LPN use different PMI just to become a problem to reduce to disturb.
Summary of the invention
The embodiment of the invention provides a kind of promotion heterogeneous network disturbance coordination method and equipment, uses different spatial positions information to reduce strong jamming each other to impel macro base station and LPN.Said technical scheme is following:
On the one hand, a kind of promotion heterogeneous network disturbance coordination method is provided, comprises:
Low power nodes LPN obtains the spatial positional information of this LPN at least one macrocell coverage area;
LPN notifies said at least one macrocell according to the sign of said at least one macrocell with the spatial positional information of this LPN in said at least one macrocell coverage area.
On the other hand, the another kind of heterogeneous network disturbance coordination method that promotes is provided, comprises:
Macrocell receives the spatial positional information of this LPN in said macrocell coverage area from low power nodes LPN;
Said macrocell obtains adjusted channel condition information CSI, and the spatial positional information of said adjusted CSI is different with the spatial positional information of said LPN in said macrocell coverage area;
Said macrocell is done scheduled transmission according to said adjusted CSI.
On the other hand, a kind of low power nodes LPN is provided, said LPN comprises:
The spatial positional information acquisition module is used to obtain the spatial positional information of this LPN at least one macrocell coverage area;
Notification module is used for the sign according to said at least one macrocell, notifies said at least one macrocell with the spatial positional information that said spatial positional information acquisition module is obtained.
On the other hand, a kind of macro cell base station is provided, said macro cell base station comprises:
The spatial positional information receiver module is used for receiving the spatial positional information of this LPN in said macrocell coverage area from low power nodes LPN;
The channel condition information acquisition module is used to obtain adjusted channel condition information CSI, and the spatial positional information of said adjusted CSI is different with the spatial positional information of said LPN in said macrocell coverage area;
The scheduled transmission module is used for doing scheduled transmission according to the adjusted CSI that said channel condition information acquisition module is obtained.
Can find out that from above technical scheme a kind of LPN that the embodiment of the invention proposes has the spatial positional information of obtaining ability, and can the spatial positional information that obtains that obtained be transferred to neighbours' macrocell; A kind of macro cell base station that the embodiment of the invention proposes then can receive the spatial positional information from LPN; And carry out interference coordination according to said spatial positional information; Impel macro base station and LPN to use different spatial positions information to reduce strong jamming each other; Therefore therefore the running time-frequency resource that need not to leave some space can effectively reduce that macrocell can not influence the macrocell utilization rate of time-frequency resources again simultaneously to the strong jamming of the Microcell in its coverage in the heterogeneous network.
The embodiment of the invention also provides a kind of promotion heterogeneous network disturbance coordination method, comprising:
Low power nodes LPN in the macrocell coverage area receives the spatial positional information that this macrocell that said macrocell sends will be dispatched in following a period of time;
When the spatial positional information of this LPN in macrocell coverage area that records as said LPN was identical with the said spatial positional information that receives, then priority scheduling was positioned at the UE at said LPN coverage center.
The embodiment of the invention also provides a kind of low power nodes LPN, and said LPN comprises:
The spatial positional information receiver module is used to receive the spatial positional information that this macrocell that macrocell sends will be dispatched in following a period of time;
The spatial positional information measurement module is used to measure the spatial positional information of said LPN in macrocell coverage area;
The dispatching user facility module; When the said spatial positional information that the spatial positional information of this LPN in macrocell coverage area that is used for recording when said spatial positional information measurement module and said spatial positional information receiver module receive was identical, then priority scheduling was positioned at the UE at said LPN coverage center.
Can find out through above technical scheme; The LPN of the embodiment of the invention is at the spatial positional information of macro base station scheduling during with the repetition of self spatial positional information; The UE at the said LPN coverage of priority scheduling center; Because it is littler that the UE at LPN coverage center receives the macro base station interference, it is done priority scheduling help reducing the influence that interference brings.
Description of drawings
Fig. 1 is the schematic flow sheet that the embodiment of the invention one proposes a kind of heterogeneous network disturbance coordination method that divides based on sky;
Fig. 2 is the schematic flow sheet that the embodiment of the invention two proposes a kind of heterogeneous network disturbance coordination method that divides based on sky;
Fig. 3 is the schematic flow sheet that the embodiment of the invention three proposes a kind of heterogeneous network disturbance coordination method that divides based on sky;
A kind of logical construction block diagram that promotes the LPN of heterogeneous network interference coordination that Fig. 4 proposes for the embodiment of the invention four;
Fig. 5 proposes a kind of logical construction block diagram that promotes the macro cell base station of heterogeneous network interference coordination for the embodiment of the invention five;
Fig. 6 proposes a kind of logical construction block diagram that promotes the UE of heterogeneous network interference coordination for the embodiment of the invention six;
Fig. 7 is that the embodiment of the invention seven proposes the another kind of logical construction block diagram that promotes the LPN of heterogeneous network interference coordination.
Embodiment
For ease of understanding to the summary of the invention part; Below in conjunction with accompanying drawing several kinds of possible embodiments of the present invention are done detailed introduction, need to prove, below cited be several kinds of possible specific embodiments; Rather than whole embodiment; Those skilled in the art can obtain other embodiment according to said embodiment, and some similarly change or are equal to replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by said protection range with claim.
It is as shown in Figure 1 that the embodiment of the invention one proposes a kind of flow process of the heterogeneous network disturbance coordination method that divides based on sky, comprises the steps:
Step 101:LPN judges whether current time is in spatial positional information and measures constantly, if not, then carry out the prior art operation, and execution in step 101 once more; If, execution in step 102.
Said judgement can be according to triggering the measuring period of systemic presupposition.Can be longer the measuring period that it is emphasized that the spatial positional information here, for example with minute, hour or day be unit.
Said spatial positional information can be pre-coding matrix indication (PMI, Precoding Matrix Indicator) or comprise PMI simultaneously and order indication (RI, Rank Indicator).
Step 102:LPN obtains the interior spatial positional information of N macrocell coverage area at its place.
The concrete grammar that obtains spatial positional information has a lot, below lifts several examples:
When if spatial positional information is PMI, the method that obtains the spatial positional information of LPN in macrocell coverage area is following:
Method one:
LPN selects that maximum UE of Reference Signal Received Power (RSRP, Reference Signal Received Power) from all UE that self serves, through the PMI of its measuring N of high-level signaling configuration neighbours' macrocell that interference is the strongest; Said N is the natural number that is provided with in advance;
This UE will measure N PMI and corresponding macrocell sign (Cell_ID) reports LPN;
N PMI that LPN reports this UE and corresponding neighbours' macrocell thereof are as its spatial positional information in this N macrocell.
Method two:
LPN is through the PMI of all UE measuring N neighbours' macrocell that interference is the strongest of its service of high-level signaling configuration; Said N is pre-configured natural number;
UE reports this LPN with the N that a measures PMI and corresponding Cell_ID thereof;
LPN finds the maximum N of an occurrence number Cell_ID at first among all results that report, and the macrocell that said N Cell_ID is corresponding is as disturbing N the strongest neighbours' macrocell; Report quantity to sort each pairing PMI in strong jamming sub-district in the reported result then, select to report that maximum PMI of quantity as the spatial positional information of this LPN in this strong jamming sub-district.
When if spatial positional information comprises RI and PMI simultaneously, the method that obtains the spatial positional information of LPN in macrocell coverage area is following:
Method one:
LPN selects that maximum UE of Reference Signal Received Power (RSRP) from all UE that self serves, through its measuring N of the high-level signaling configuration the strongest best PMI of neighbours' macrocell under each possible RI value of interference; Said N is the natural number that is provided with in advance;
This UE will measure N and disturb respectively the organize RI and PMI and corresponding macrocell sign (Cell_ID) thereof of macrocell to report LPN;
LPN identifies respectively the organize RI and PMI and corresponding macrocell thereof that these report as its spatial positional information in this N macrocell.
Method two:
LPN is through all the UE measuring N the strongest best PMI of neighbours' macrocell under each possible RI value of interference of its service of high-level signaling configuration;
UE disturbs respectively the organize RI and PMI and corresponding macrocell sign Cell_ID thereof of macrocell to report service LPN with the N that measures;
LPN at first finds the maximum N of occurrence number macrocell sign from the result that all report, said N macrocell identified corresponding macrocell as disturbing N the strongest neighbours' macrocell; Then with each strong jamming sub-district in the reported result corresponding every kind of RI PMI down report quantity to sort, select to report that maximum PMI of quantity to make up as the spatial positional information of this LPN in this strong jamming sub-district with corresponding RI.
Step 103:LPN is with the Cell_ID notice corresponding neighbours macrocell of N the spatial positional information of confirming according to correspondence.Advice method can be to carry out through back haul link (backhaul) link, also can adopt other possible modes.Said back haul link can be wired or wireless.
Step 104: neighbours' macrocell receives the spatial positional information of the LPN in its coverage, and (PMI (perhaps PMI and RI)) broadcasts in the sub-district with all or part spatial positional information.
Step 105: the UE of neighbours' macrocell service receives the spatial positional information (PMI perhaps also comprises RI) in the broadcast; When carrying out the channel status estimation; PMI in the spatial positional information that receives (perhaps PMI and RI) is removed from alternative PMI (perhaps PMI and RI); With estimating that the channel condition information (CSI, Channel State Information) that obtains feeds back to said neighbours' macrocell.
Step 106: said neighbours' macrocell receives the CSI of UE feedback, and does scheduled transmission according to this CSI.
The embodiment of the invention and to propose a kind of flow process of the heterogeneous network disturbance coordination method that divides based on sky as shown in Figure 2 comprises the steps:
Step 201:LPN judges at first whether current time is in spatial positional information and measures constantly.If not, then carry out prior art operation, and execution in step 201 once more; If, execution in step 202.
Step 202:LPN obtains the interior spatial positional information of N macrocell coverage area at its place.
Step 203:LPN notifies according to the Cell_ID of correspondence N the spatial positional information of confirming neighbours' macrocell of correspondence through the backhaul link;
Step 204: neighbours' macrocell receives the spatial positional information of the LPN in its coverage;
Step 205: the UE that neighbours' macrocell is served measures and feeds back the CSI of the best according to prior art;
Step 206: after neighbours' macrocell receives the CSI of UE feedback; Said channel condition information is adjusted as follows: if comprise the spatial positional information identical in the said channel condition information with the spatial positional information of the LPN that is received; Then select another spatial positional information for UE again; And recomputate corresponding channel quality and indicate (CQI, Channel Quality Indicator); If do not comprise the spatial positional information identical in the said channel condition information, then do not process with the spatial positional information of the LPN that is received.
The said method of reselecting another spatial information can have a lot; Below lift an example the simplest: if spatial positional information comprises RI and PMI; Then RI is constant; To select another PMI, the PMI of this PMI and UE feedback is the most approaching, and is so-called here the most near being meant that the pairing radiation direction of PMI angle is the most approaching.
The CQI that UE feeds back to macrocell is based on the spatial positional information (PMI) of its selection and estimates to obtain SINR; At this moment owing to adopting another PMI, macrocell does emission, so, need rerun to CQI; And, select the suitable modulating code rate according to the result after reruning.
Step 207: said neighbours' macrocell adopts adjusted CSI to carry out scheduled transmission.
The scheme of above embodiment one and embodiment two all is LPN measurement space positional informations, and this spatial positional information is delivered to neighbours' macrocell, carries out interference coordination by neighbours' macrocell.In fact also can be conversely, by neighbours' macrocell measurement space positional information, and this spatial positional information passed to neighbours LPN, carry out interference coordination by LPN, the scheme that the embodiment of the invention that Here it is three proposes.
It is as shown in Figure 3 that the embodiment of the invention three proposes a kind of flow process of the heterogeneous network disturbance coordination method that divides based on sky, comprises the steps:
Step 301: macrocell is confirmed in its following a period of time according to the channel condition information of its UE that serves feedback, the spatial positional information of being dispatched on each subframe (PMI (perhaps PMI and RI)).
For example: suppose that this sub-district has 10 UE, feed back the 4 kinds of PMI (spatial information) that come up, at this moment just in following a period of time, these 4 PMI of employing of circulation launch macrocell in order.Said following a period of time can be a few tens of milliseconds.
Step 302: macrocell is notified the neighbours in the corresponding coverage LPN with this spatial positional information through the backhaul link;
Step 303: neighbours LPN receives this spatial positional information.
Step 304: when the spatial positional information of being dispatched when said neighbours LPN spatial positional information that records and the macrocell current time that receives is identical; The expression macrocell can produce strong jamming to this LPN, then priority scheduling those be positioned at the UE at LPN coverage center.And, can not do scheduling for the UE at LPN edge.Said LPN coverage center can be set by those skilled in the art according to the actual requirements, and its quality that can be LPN serves UE is higher than the zone of certain thresholding, also can be distance L PN zone within the specific limits on the space.The UE at LPN coverage center and the UE of LPN coverage edge can the time relative notion, if a UE1 is nearer than UE2 distance L PN, perhaps the signal quality of said UE1 (like RSRP) is better than UE2, then UE1 can be by priority scheduling, and UE2 is not done scheduling.
A kind of LPN that promotes the heterogeneous network interference coordination that the embodiment of the invention four proposes, as shown in Figure 4, said LPN400 comprises:
Spatial positional information acquisition module 401 is used to obtain the spatial positional information of this LPN at least one macrocell coverage area;
Notification module 402 is used for the sign according to said at least one macrocell, notifies said at least one macrocell with the spatial positional information that said spatial positional information acquisition module is obtained.
Preferably, said LPN further comprises:
Judge module 403 is used to judge whether current time is in spatial positional information and measures constantly, if then enable said spatial positional information acquisition module 401.
Said spatial positional information specifically is divided into two types, the first kind, and spatial positional information is pre-coding matrix indication PMI; Second type, spatial positional information is PMI and RI.
The inside of said spatial positional information acquisition module 401 can be divided into dispensing unit, receiving element and spatial positional information the unit is set.According to the difference of spatial positional information type, the concrete function of said three unit is also different.
For first kind spatial positional information, said spatial positional information acquisition module can comprise:
First dispensing unit, all UE that are used for serving from said LPN select that maximum UE of Reference Signal Received Power RSRP, through the PMI of its measuring N of high-level signaling configuration neighbours' macrocell that interference is the strongest;
First receiving element is used to receive N PMI and the corresponding neighbours' macrocell sign thereof that the maximum UE of said RSRP reports;
First spatial positional information is provided with the unit, and N the PMI and the corresponding neighbours' macrocell thereof that are used for said first receiving element is received identify as the spatial positional information of LPN in this N macrocell.
Perhaps, said spatial positional information acquisition module comprises:
Second dispensing unit is used for disposing through high-level signaling the PMI of all UE measuring N neighbours' macrocell that interference is the strongest of said LPN service;
Second receiving element is used to receive PMI that UE reports and corresponding macrocell sign thereof;
Second spatial positional information is provided with the unit, is used for finding the maximum N of occurrence number macrocell sign in all results that report that said second receiving element receives, and said N macrocell identified corresponding macrocell as N strong jamming neighbours macrocell; And report quantity to sort the pairing PMI of each strong jamming neighbours macrocell in the reported result, select to report that maximum PMI of quantity as the spatial positional information of this LPN in this strong jamming sub-district.
For the second space-like positional information, said spatial positional information acquisition module comprises:
The 3rd dispensing unit, all UE that are used for serving from said LPN select that maximum UE of RSRP, through its measuring N of the high-level signaling configuration the strongest best PMI of neighbours' macrocell under each possible RI value of interference;
The 3rd receiving element is used to receive N the macrocell sign of respectively organizing RI and PMI and correspondence thereof of disturbing macrocell that said UE reports;
The 3rd spatial positional information is provided with the unit, is used for respectively organize RI and PMI and corresponding macrocell thereof that the 3rd receiving element receives are identified as its spatial positional information in this N macrocell.
Perhaps, said spatial positional information acquisition module comprises:
The 4th dispensing unit is used for disposing all the UE measuring N the strongest best PMI of neighbours' macrocell under each possible RI value of interference that said LPN serves through high-level signaling;
The 4th receiving element, what be used to receive interference macrocell that UE reports respectively organizes RI and PMI and corresponding macrocell sign thereof;
The 4th spatial positional information is provided with the unit; Be used for all results that report that the 4th receiving element receives are found the maximum N of occurrence number macrocell sign; Said N macrocell identified corresponding macrocell as disturbing N the strongest neighbours' macrocell; With each strong jamming sub-district in the reported result corresponding every kind of RI PMI down report quantity to sort, select to report that maximum PMI of quantity to make up as the spatial positional information of this LPN in this strong jamming sub-district with corresponding RI.
Preferably, said notification module through back haul link just the spatial positional information of this LPN in said at least one macrocell coverage area notify said at least one macrocell.
The embodiment of the invention five proposes a kind of macro cell base station that promotes the heterogeneous network interference coordination, and as shown in Figure 5, said macro cell base station 500 comprises:
Spatial positional information receiver module 501 is used for receiving the spatial positional information of this LPN in said macrocell coverage area from low power nodes LPN;
Channel condition information acquisition module 502 is used to obtain adjusted channel condition information CSI, and the spatial positional information of said adjusted CSI is different with the spatial positional information of said LPN in said macrocell coverage area;
Scheduled transmission module 503 is used for doing scheduled transmission according to the adjusted CSI that said channel condition information acquisition module 502 is obtained.
Preferably, said channel condition information acquisition module 502 comprises:
Receiving element 504 is used to receive the channel condition information that UE feeds back;
The embodiment of the invention six proposes a kind of UE that promotes the heterogeneous network interference coordination, and as shown in Figure 6, said UE600 comprises:
Channel condition information sending module 603 is used for the resulting channel condition information of said channel estimation module is fed back to said macrocell.
The embodiment of the invention seven proposes the another kind of LPN that promotes the heterogeneous network interference coordination, and as shown in Figure 7, said LPN700 comprises:
Spatial positional information receiver module 701 is used to receive the spatial positional information that macrocell will be dispatched in following a period of time through this macrocell of back haul link transmission;
Spatial positional information measurement module 702 is used to measure the spatial positional information of said LPN in macrocell coverage area;
Dispatching user facility module 703; When the said spatial positional information that the spatial positional information of this LPN in macrocell coverage area that is used for recording when said spatial positional information measurement module 702 and said spatial positional information receiver module 701 receive was identical, then priority scheduling was positioned at the UE at said LPN coverage center.
Through the description of above execution mode, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential common hardware, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of software product, and this computer software product is stored in the storage medium that can read, like the floppy disk of computer; Hard disk or CD etc.; Comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.
Claims (18)
1. one kind promotes the heterogeneous network disturbance coordination method, it is characterized in that, comprising:
Low power nodes LPN obtains the spatial positional information of this LPN at least one macrocell coverage area;
LPN notifies said at least one macrocell according to the sign of said at least one macrocell with the spatial positional information of this LPN in said at least one macrocell coverage area.
2. method according to claim 1 is characterized in that, said LPN obtains before the spatial positional information of this LPN at least one macrocell coverage area, further comprises:
LPN judges whether current time is in spatial positional information and measures constantly, if then carry out the step that said LPN obtains the spatial positional information of this LPN at least one macrocell coverage area.
3. method according to claim 1 is characterized in that, said spatial positional information is pre-coding matrix indication PMI.
4. method according to claim 3 is characterized in that, said LPN obtains the spatial positional information of this LPN at least one macrocell coverage area and comprises:
LPN selects that maximum UE of Reference Signal Received Power RSRP from a plurality of UE that self serves, dispose the PMI of selected UE measuring N neighbours' macrocell through high-level signaling, and N is a natural number;
LPN receives N PMI and the corresponding macrocell sign thereof that said selected UE reports;
LPN identifies N PMI and the corresponding neighbours' macrocell thereof that said selected UE reports as the spatial positional information of said LPN in this N macrocell;
Perhaps
LPN is through the PMI of a plurality of UE measuring N neighbours' macrocell of its service of high-level signaling configuration;
LPN receives PMI that said a plurality of UE reports and corresponding macrocell sign thereof;
LPN finds the maximum N of occurrence number macrocell sign in the result who reports, said N macrocell identified corresponding macrocell as N strong jamming neighbours macrocell;
LPN reports quantity to sort the pairing PMI of each strong jamming neighbours macrocell in the reported result, selects to report that maximum PMI of quantity as the spatial positional information of this LPN in this strong jamming sub-district.
5. method according to claim 1 is characterized in that, said spatial positional information is PMI and order indication RI.
6. method according to claim 5 is characterized in that, said LPN obtains the spatial positional information of this LPN at least one macrocell coverage area and comprises:
LPN selects that maximum UE of RSRP from a plurality of UE that self serves, dispose the best PMI of selected UE measuring N neighbours' macrocell under each possible RI value through high-level signaling, and N is a natural number;
LPN receives N the macrocell sign of respectively organizing RI and PMI and correspondence thereof of disturbing macrocell that said selected UE reports;
LPN identifies respectively the organize RI and PMI and corresponding macrocell thereof that these report as its spatial positional information in this N macrocell;
Perhaps
LPN is through the best PMI of a plurality of UE measuring N neighbours' macrocell under each possible RI value of its service of high-level signaling configuration;
What LPN received interference macrocell that said a plurality of UE reports respectively organizes RI and PMI and corresponding macrocell sign thereof;
LPN finds the maximum N of occurrence number macrocell sign in the result who reports, said N macrocell identified corresponding macrocell as said N neighbours' macrocell;
LPN with each strong jamming sub-district in the reported result corresponding every kind of RI PMI down report quantity to sort, select to report that maximum PMI of quantity to make up as the spatial positional information of this LPN in this strong jamming sub-district with corresponding RI.
7. according to each described method of claim 1 to 6; It is characterized in that, saidly notify said at least one macrocell to be the spatial positional information of this LPN in said at least one macrocell coverage area: notify said at least one macrocell with the spatial positional information of this LPN in said at least one macrocell coverage area through back haul link.
8. one kind promotes the heterogeneous network disturbance coordination method, it is characterized in that, comprising:
Macrocell receives the spatial positional information of this LPN in said macrocell coverage area from low power nodes LPN;
Said macrocell obtains adjusted channel condition information CSI, and the spatial positional information of said adjusted CSI is different with the spatial positional information of said LPN in said macrocell coverage area;
Said macrocell is done scheduled transmission according to said adjusted CSI.
9. method according to claim 8 is characterized in that, said macrocell obtains adjusted CSI and comprises:
Macrocell receives the channel condition information of UE feedback;
Said channel condition information is adjusted as follows: if comprise and the identical spatial positional information of the spatial positional information of the LPN that is received in said macrocell coverage area in the said channel condition information; Then be another spatial positional information of UE selection again, and recomputate corresponding channel quality indication.
10. method according to claim 8 is characterized in that, said macrocell obtains adjusted CSI and comprises:
Macrocell obtains said adjusted CSI from UE.
11. one kind promotes the heterogeneous network disturbance coordination method, it is characterized in that, comprising:
Low power nodes LPN in the macrocell coverage area receives the spatial positional information that this macrocell that said macrocell sends will be dispatched in following a period of time;
When the spatial positional information of this LPN in macrocell coverage area that records as said LPN was identical with the said spatial positional information that receives, then priority scheduling was positioned at the UE at said LPN coverage center.
12. method according to claim 11; It is characterized in that said LPN receives the spatial positional information that this macrocell that said macrocell sends dispatched and comprises in following a period of time: said LPN receives the spatial positional information that this macrocell that said macrocell sends will be dispatched in following a period of time through back haul link.
13. a low power nodes LPN is characterized in that, said LPN comprises:
The spatial positional information acquisition module is used to obtain the spatial positional information of this LPN at least one macrocell coverage area;
Notification module is used for the sign according to said at least one macrocell, notifies said at least one macrocell with the spatial positional information that said spatial positional information acquisition module is obtained.
14. LPN according to claim 13 is characterized in that, said LPN further comprises:
Judge module is used to judge whether current time is in spatial positional information and measures constantly, if then enable said spatial positional information acquisition module.
15. according to claim 13 or 14 described LPN, it is characterized in that, said notification module through back haul link just the spatial positional information of this LPN in said at least one macrocell coverage area notify said at least one macrocell.
16. a macro cell base station is characterized in that, said macro cell base station comprises:
The spatial positional information receiver module is used for receiving the spatial positional information of this LPN in said macrocell coverage area from low power nodes LPN;
The channel condition information acquisition module is used to obtain adjusted channel condition information CSI, and the spatial positional information of said adjusted CSI is different with the spatial positional information of said LPN in said macrocell coverage area;
The scheduled transmission module is used for doing scheduled transmission according to the adjusted CSI that said channel condition information acquisition module is obtained.
17. macro cell base station according to claim 16 is characterized in that, said channel condition information acquisition module comprises:
Receiving element is used to receive the channel condition information that UE feeds back;
Adjustment unit; The channel condition information that is used for said receiving element is received is adjusted as follows: if said channel condition information comprises and the identical spatial positional information of the spatial positional information of the LPN that is received in said macrocell coverage area; Then be another spatial positional information of UE selection again, and recomputate corresponding channel quality indication.
18. a low power nodes LPN is characterized in that, said LPN comprises:
The spatial positional information receiver module is used to receive the spatial positional information that this macrocell that macrocell sends will be dispatched in following a period of time;
The spatial positional information measurement module is used to measure the spatial positional information of said LPN in macrocell coverage area;
The dispatching user facility module; When the said spatial positional information that the spatial positional information of this LPN in macrocell coverage area that is used for recording when said spatial positional information measurement module and said spatial positional information receiver module receive was identical, then priority scheduling was positioned at the UE at said LPN coverage center.
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| CN201110037007.7A CN102638805B (en) | 2011-02-12 | 2011-02-12 | A kind of promotion heterogeneous network disturbance coordination method and equipment |
| PCT/CN2012/070868 WO2012106987A1 (en) | 2011-02-12 | 2012-02-03 | Method and device for enhancing interference coordination in heterogeneous network |
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| CN201110037007.7A CN102638805B (en) | 2011-02-12 | 2011-02-12 | A kind of promotion heterogeneous network disturbance coordination method and equipment |
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| WO2015018269A1 (en) * | 2013-08-08 | 2015-02-12 | 华为技术有限公司 | Cooperative scheduling method, device and system based on interference cancellation |
| CN105391511A (en) * | 2015-11-26 | 2016-03-09 | 北京邮电大学 | Method and apparatus for eliminating interlayer interference of heterogeneous networks |
| WO2018082497A1 (en) * | 2016-11-04 | 2018-05-11 | 中兴通讯股份有限公司 | Space information processing method and device, and transmission node and storage medium |
| CN112020092A (en) * | 2019-05-31 | 2020-12-01 | 华为技术有限公司 | Channel information acquisition method and device |
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| CN104053158B (en) | 2013-03-11 | 2018-04-06 | 株式会社日立制作所 | Isomery cellular network and the resource selection method of micro-base station therein and micro-base station |
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| WO2014114121A1 (en) * | 2013-01-25 | 2014-07-31 | 中兴通讯股份有限公司 | Method, apparatus and system for realizing security detection in heterogeneous network |
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| WO2018082497A1 (en) * | 2016-11-04 | 2018-05-11 | 中兴通讯股份有限公司 | Space information processing method and device, and transmission node and storage medium |
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| CN112020092B (en) * | 2019-05-31 | 2022-05-24 | 华为技术有限公司 | Channel information acquisition method and device |
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| Publication number | Publication date |
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| CN102638805B (en) | 2016-10-05 |
| WO2012106987A1 (en) | 2012-08-16 |
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