CN103391552B - Heterogeneous hierarchical Radio Network System up-link interference coordination method and device - Google Patents

Abstract

The embodiment of the present invention provides heterogeneous hierarchical Radio Network System up-link interference coordination method and device, described method comprises: utilize the little base station of focus to obtain with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference, and causes the macro base station user of interference to the uplink interference channel of the little base station of described focus described in detection; The macro base station user profile of interference is caused to the little base station of described focus according to described and describedly cause the macro base station user of interference to the uplink interference channel of the little base station of described focus, described in structure, cause the kernel of the macro base station user uplink interference channel of interference to obtain the received beam forming vectors of described focus little base station service-user; The scheduling of described focus little base station service-user is carried out according to described received beam forming vectors.The present invention can suppress macro base station user to the uplink interference of the little base station of focus preferably, thus reduces the interference-to-noise ratio of the little base station of focus, improves upstream sinr and the throughput of user.

Description

Heterogeneous hierarchical Radio Network System up-link interference coordination method and device

Technical field

The present invention relates to heterogeneous wireless network technical field, particularly relate to heterogeneous hierarchical Radio Network System up-link interference coordination method and device.

Background technology

Along with the development of mobile communication technology, the spectrum efficiency of the macrocellular network of point-to-point reaches theoretical limit, be difficult to meet ever-increasing user's request, the heterogeneous nodes of multilayer low-power, little covering is laid in macrocell coverage area, such as picocell (Pico), relaying, Home eNodeB, spaced antenna etc., can elevator system spectrum efficiency and improve MPS process effectively, and the high speed business demand of user under meeting focus scene.3GPP, the standardization bodies such as 802.16 all corresponding research for the application start of heterogeneous network in forth generation mobile communication.In order to improve system spectral efficiency, macrocell and hot spot networks can adopt identical networking, but due to the multilayer coverage property of heterogeneous network, this networking mode can bring the interference between macrocell and Hot Spot, for up, interference source mainly comes from the nearer grand user (MacrocellUserEquipment, MUE) in edge of distance hot spot networks.As shown in Figure 1, for macro base station user is to the uplink interference schematic diagram of the little base station of focus: there is edge customer MUE1, MUE3 and central user MUE2 in macrocell coverage area, wherein MUE1 and the MUE2 distance little base station of focus is comparatively near, and the MUE3 distance little base station of focus is far away; If require that the target Signal to Interference plus Noise Ratio of MUE arrival macro base station is identical, MUE1 uplink transmission power is far above MUE2, although MUE3 is also in macrocell edge, but its distance to Hot Spot is greater than MUE1, therefore, its uplink interference caused focus little base station service-user PUE is also much smaller than MUE1.Therefore, MUE1 is to focus little base station service-user---the uplink interference that the user PUE (PicoUserEquipment, PUE) in picocell causes is far above MUE2 and MUE3.As can be seen here, how to suppress macro base station user to the uplink interference of the little base station of focus, this is a technical problem urgently to be resolved hurrily, and prior art does not also have fairly perfect solution.

Summary of the invention

The embodiment of the present invention provides heterogeneous hierarchical Radio Network System up-link interference coordination method and device, to suppress macro base station user to the uplink interference of the little base station of focus.

On the one hand, embodiments provide a kind of heterogeneous hierarchical Radio Network System up-link interference coordination method, described method comprises: utilize the little base station of focus to obtain with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference, and causes the macro base station user of interference to the uplink interference channel of the little base station of described focus described in detection; The macro base station user profile of interference is caused to the little base station of described focus according to described and describedly cause the macro base station user of interference to the uplink interference channel of the little base station of described focus, described in structure, cause the kernel of the macro base station user uplink interference channel of interference to obtain the received beam forming vectors of described focus little base station service-user; The scheduling of described focus little base station service-user is carried out according to described received beam forming vectors.

Preferably, in an embodiment of the present invention, the described little base station of focus that utilizes obtains with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference, and detection described in cause the macro base station user of interference to the little base station of described focus uplink interference channel before, described method can also comprise: detect the up interference triggered isomery interference coordination be subject in the little base station of described focus.

Further, preferably, in an embodiment of the present invention, the up interference triggered isomery interference coordination be subject in the little base station of the described focus of described detection, can comprise: periodically detect the little base station cell load of described focus and the interference of adjacent cell on different Physical Resource Block, if the interference on same Resource Block is greater than predetermined threshold, trigger isomery dynamic interference coordination.

Preferably, in an embodiment of the present invention, the described little base station of focus that utilizes obtains with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference, can comprise: all macro base station information traveling through the adjacent cell place of the little base station of described focus, the macro base station user ID little base station of described focus being caused to interference corresponding to described focus little base station interference coordination Physical Resource Block is received from inter-base station interface, obtain interference source macro base station user set, and obtain uplink interference intensity and the uplink reference signals configuration information of each macro base station user in described interference source macro base station user set.

Preferably, in an embodiment of the present invention, cause the macro base station user of interference to the uplink interference channel of the little base station of described focus described in described detection, can comprise: according to the uplink reference signals configuration information of macro base station user in described interference source macro base station user set, described focus little base station interference coordination Physical Resource Block detects the uplink channel status information of all macro base station users in interference source macro base station user set, obtain described interference coordination Physical Resource Block in each dispatching cycle from inter-base station interface be subject to macro base station scheduling and be in the macro base station user ID in corresponding described interference source macro base station user set, described macro base station user ID is put into collaboration user set, and element is wherein sorted from big to small according to described uplink interference intensity.

Preferably, in an embodiment of the present invention, describedly the macro base station user profile of interference is caused to the little base station of described focus according to described and describedly cause the macro base station user of interference to the uplink interference channel of the little base station of described focus, cause the kernel of the macro base station user uplink interference channel of interference to obtain the received beam forming vectors of described focus little base station service-user described in structure, can comprise: on the interference coordination Physical Resource Block of described focus little base station, traversal focus little base station service-user, for the collaboration user set on this interference coordination Physical Resource Block, inquire about the element in described collaboration user set from front to back, macro base station user corresponding for first element is set to the first orthogonal dimension base vector to the interference channel of the little base station of described focus, for each element afterwards, according to macro base station user corresponding to this element to the interference channel of the little base station of described focus and orthogonal base vectors that before it, all elements is corresponding, calculate the orthogonal base vectors that described macro base station user is corresponding, make it to be in the kernel of all orthogonal base vectors above, inquiry continues until travel through all elements in described collaboration user set, or the element number of inquiring about equals the little antenna for base station number of described focus and subtracts 1, according to described focus little base station service-user to the service channel of the little base station of this focus and orthogonal base vectors corresponding to the element of all inquiries, calculate the received beam forming vectors of described focus little base station service-user, make it to be in the kernel of orthogonal base vectors Special composition corresponding to described all elements inquired about.

Preferably, in an embodiment of the present invention, the described scheduling carrying out described focus little base station service-user according to described received beam forming vectors, can comprise: in conjunction with the described beamforming vector that described focus little base station interference coordination Physical Resource Block calculates, estimate that the up channel gain of described focus little base station service-user is to perform frequency selectivity uplink scheduling.

On the other hand, embodiments provide a kind of heterogeneous hierarchical Radio Network System uplink interference coordination device, described device comprises: acquiring unit, for utilizing the little base station of focus to obtain with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference, and cause the macro base station user of interference to the uplink interference channel of the little base station of described focus described in detection; Computing unit, for causing the macro base station user profile of interference to the little base station of described focus according to described and describedly cause the macro base station user of interference to the uplink interference channel of the little base station of described focus, described in structure, cause the kernel of the macro base station user uplink interference channel of interference to obtain the received beam forming vectors of described focus little base station service-user; Scheduling unit, for carrying out the scheduling of described focus little base station service-user according to described received beam forming vectors.

Preferably, in an embodiment of the present invention, described device can also comprise: trigger element, the little base station of focus is utilized to obtain with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference for described acquiring unit, and detection described in cause the macro base station user of interference to the little base station of described focus uplink interference channel before, detect the up interference triggered isomery interference coordination be subject in the little base station of described focus.

Further, preferably, in an embodiment of the present invention, described trigger element, be further used for periodically detecting the little base station cell load of described focus and the interference of adjacent cell on different Physical Resource Block, if the interference on same Resource Block is greater than predetermined threshold, trigger isomery dynamic interference coordination.

Preferably, in an embodiment of the present invention, described acquiring unit, be further used for all macro base station information at the adjacent cell place traveling through the little base station of described focus, the macro base station user ID little base station of described focus being caused to interference corresponding to described focus little base station interference coordination Physical Resource Block is received from inter-base station interface, obtain interference source macro base station user set, and obtain uplink interference intensity and the uplink reference signals configuration information of each macro base station user in described interference source macro base station user set.

Preferably, in an embodiment of the present invention, described acquiring unit, be further used for the uplink reference signals configuration information according to macro base station user in described interference source macro base station user set, described focus little base station interference coordination Physical Resource Block detects the uplink channel status information of all macro base station users in interference source macro base station user set, obtain described interference coordination Physical Resource Block in each dispatching cycle from inter-base station interface be subject to macro base station scheduling and be in the macro base station user ID in corresponding described interference source macro base station user set, described macro base station user ID is put into collaboration user set, and element is wherein sorted from big to small according to described uplink interference intensity.

Preferably, in an embodiment of the present invention, described computing unit, be further used on the interference coordination Physical Resource Block of described focus little base station, traversal focus little base station service-user, for the collaboration user set on this interference coordination Physical Resource Block, inquire about the element in described collaboration user set from front to back, macro base station user corresponding for first element is set to the first orthogonal dimension base vector to the interference channel of the little base station of described focus, for each element afterwards, according to macro base station user corresponding to this element to the interference channel of the little base station of described focus and orthogonal base vectors that before it, all elements is corresponding, calculate the orthogonal base vectors that described macro base station user is corresponding, make it to be in the kernel of all orthogonal base vectors above, inquiry continues until travel through all elements in described collaboration user set, or the element number of inquiring about equals the little antenna for base station number of described focus and subtracts 1, according to described focus little base station service-user to the service channel of the little base station of this focus and orthogonal base vectors corresponding to the element of all inquiries, calculate the received beam forming vectors of described focus little base station service-user, make it to be in the kernel of orthogonal base vectors Special composition corresponding to described all elements inquired about.

Preferably, in an embodiment of the present invention, described scheduling unit, is further used for the described beamforming vector in conjunction with described focus little base station interference coordination Physical Resource Block calculates, and estimates that the up channel gain of described focus little base station service-user is to perform frequency selectivity uplink scheduling.

Technique scheme has following beneficial effect: utilize the little base station of focus to obtain with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference because adopt, and causes the macro base station user of interference to the uplink interference channel of the little base station of described focus described in detection; The macro base station user profile of interference is caused to the little base station of described focus according to described and describedly cause the macro base station user of interference to the uplink interference channel of the little base station of described focus, described in structure, cause the kernel of the macro base station user uplink interference channel of interference to obtain the received beam forming vectors of described focus little base station service-user; The technological means of the scheduling of described focus little base station service-user is carried out according to described received beam forming vectors, so macro base station user can be suppressed preferably to the uplink interference of the little base station of focus, thus reduce the interference-to-noise ratio (InterferenceoverThermal of the little base station of focus, IoT), improve upstream sinr and the throughput of each focus little base station service-user, and improve community average throughput; In addition, owing to not needing interaction of user data information between macro base station and the little base station of focus, therefore the expense of the interface of receiving node is also lower.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the uplink interference schematic diagram of macro base station user to the little base station of focus;

Fig. 2 is a kind of heterogeneous hierarchical Radio Network System of embodiment of the present invention up-link interference coordination method flow chart;

Fig. 3 is a kind of heterogeneous hierarchical Radio Network System of embodiment of the present invention uplink interference coordination apparatus structure schematic diagram;

Fig. 4 is the embodiment of the present invention another kind of heterogeneous hierarchical Radio Network System uplink interference coordination apparatus structure schematic diagram;

Fig. 5 is the topological scene schematic diagram of application example of the present invention;

Fig. 6 is application example heterogeneous hierarchical Radio Network System up-link interference coordination method flow chart of the present invention;

Fig. 7 is the refinement flow chart of application example Fig. 6 heterogeneous hierarchical Radio Network System up-link interference coordination method of the present invention;

Fig. 8 is the organigram of application example orthogonal base vectors of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

In order to suppress MUE to the uplink interference of the little base station of focus, Inter-Cell Interference Coordination (Inter-CellInterferenceCoordination, the ICIC) technology such as time domain, frequency domain and multipoint cooperative can be adopted.Multipoint cooperative (CoordinatedMulti-Point, CoMP) technology is a kind of technology utilizing base station end multi-antenna technology to avoid presence of intercell interference, compared to the interference coordination technique of time domain and frequency domain, CoMP technology utilizes spatial character to eliminate presence of intercell interference, make different districts can use identical running time-frequency resource transmission data, improve the efficiency that resource uses, have a good application prospect in heterogeneous wireless system.CoMP technology comprises Combined Treatment (JointProcessing, JP) and cooperative scheduling/wave beam forming (CoordinatedScheduling/Beamforming, CS/CB).JP technology is by sharing users data in multiple sending/receiving node in same cooperative cluster, adjacent multiple base stations can be made to send or receive the data of same user, presence of intercell interference is become useful signal, thus improve the reception Signal to Interference plus Noise Ratio (SignaltoInterferenceplusNoiseRatio, SINR) of edge customer.Because JP technology needs sharing users data between cooperative base station, adding the expense of inter-base station interface and the Signalling exchange for cooperating, therefore high requirement being proposed to interface capacity between base station.Comparatively speaking, CS/CB technology does not need sharing users data between base station, and this community user is only served in each base station, falls into by wave beam zero interference reduced adjacent cell in same cooperative cluster.For uplink, show as cooperative base station user scheduling information is passed to be disturbed base station, be disturbed base station and also calculate reception vector by the channel of detection interference source user, interference channel is in the kernel receiving vector, thus eliminates uplink interference.This scheme does not need interaction of user data between base station, but still need the up channel of base station sounds interference source user, and transmit the information such as reference signal configuration and user scheduling by the interface between base station, interface for Home eNodeB between receiving node is presented as gateway, for picocell, spaced antenna, be presented as X2 interface.Fall into if wave beam zero is all carried out to MUE taking same asset all in place macrocell and adjacent macro cell in the little base station of the focus be disturbed, not only need these macro base stations that MUEID and uplink reference signals configuration information are passed to the little base station of the focus be disturbed, and in order to avoid the interference between MUE and Hot Spot UE uplink reference signals, the uplink detection reference signal of these users needs to adopt mutually orthogonal code sequence, therefore also can have an impact to the configuration of reference signal; Consider that the adjacent cell number of users of interference can be eliminated in the little base station of focus in addition, or be called that wave beam zero falls into the degree of freedom, be limited to the little base station receive antenna number of focus, and MUE interference strength is different, therefore do not need to perform interference to all MUE to eliminate, only need that wave beam zero is carried out to the stronger user of interference and fall into.

The embodiment of the present invention provides heterogeneous hierarchical Radio Network System up-link interference coordination method and device, to suppress macro base station user to the uplink interference of the little base station of focus.

As shown in Figure 2, a kind of heterogeneous hierarchical Radio Network System of embodiment of the present invention up-link interference coordination method flow chart, described method comprises:

201, utilize the little base station of focus to obtain with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference, and cause the macro base station user of interference to the uplink interference channel of the little base station of described focus described in detection;

202, the macro base station user profile of interference is caused to the little base station of described focus according to described and describedly cause the macro base station user of interference to the uplink interference channel of the little base station of described focus, described in structure, cause the kernel of the macro base station user uplink interference channel of interference to obtain the received beam forming vectors of described focus little base station service-user;

203, the scheduling of described focus little base station service-user is carried out according to described received beam forming vectors.

Preferably, in an embodiment of the present invention, the described little base station of focus that utilizes obtains with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference, and detection described in cause the macro base station user of interference to the little base station of described focus uplink interference channel before, described method can also comprise: detect the up interference triggered isomery interference coordination be subject in the little base station of described focus.It should be noted that, the present invention can trigger isomery interference coordination by detecting, and to improve the throughput of each focus little base station service-user, improves the performance of the little base station of focus, and improves resource utilization.

Further, preferably, in an embodiment of the present invention, the up interference triggered isomery interference coordination be subject in the little base station of the described focus of described detection, can comprise: periodically detect the little base station cell load of described focus and the interference of adjacent cell on different Physical Resource Block, if the interference on same Resource Block is greater than predetermined threshold, trigger isomery dynamic interference coordination.It should be noted that, the present invention can by periodically detecting, when being necessary (if the interference on same Resource Block is greater than predetermined threshold) trigger isomery interference coordination, to improve the throughput of each focus little base station service-user further, the performance of the further little base station of raising focus, and improve resource utilization further.

Preferably, in an embodiment of the present invention, the described little base station of focus that utilizes obtains with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference, can comprise: all macro base station information traveling through the adjacent cell place of the little base station of described focus, the macro base station user ID little base station of described focus being caused to interference corresponding to described focus little base station interference coordination Physical Resource Block is received from inter-base station interface, obtain interference source macro base station user set, and obtain uplink interference intensity and the uplink reference signals configuration information of each macro base station user in described interference source macro base station user set.

Preferably, in an embodiment of the present invention, cause the macro base station user of interference to the uplink interference channel of the little base station of described focus described in described detection, can comprise: according to the uplink reference signals configuration information of macro base station user in described interference source macro base station user set, described focus little base station interference coordination Physical Resource Block detects the uplink channel status information of all macro base station users in interference source macro base station user set, obtain described interference coordination Physical Resource Block in each dispatching cycle from inter-base station interface be subject to macro base station scheduling and be in the macro base station user ID in corresponding described interference source macro base station user set, described macro base station user ID is put into collaboration user set, and element is wherein sorted from big to small according to described uplink interference intensity.

Preferably, in an embodiment of the present invention, describedly the macro base station user profile of interference is caused to the little base station of described focus according to described and describedly cause the macro base station user of interference to the uplink interference channel of the little base station of described focus, cause the kernel of the macro base station user uplink interference channel of interference to obtain the received beam forming vectors of described focus little base station service-user described in structure, can comprise: on the interference coordination Physical Resource Block of described focus little base station, traversal focus little base station service-user, for the collaboration user set on this interference coordination Physical Resource Block, inquire about the element in described collaboration user set from front to back, macro base station user corresponding for first element is set to the first orthogonal dimension base vector to the interference channel of the little base station of described focus, for each element afterwards, according to macro base station user corresponding to this element to the interference channel of the little base station of described focus and orthogonal base vectors that before it, all elements is corresponding, calculate the orthogonal base vectors that described macro base station user is corresponding, make it to be in the kernel of all orthogonal base vectors above, inquiry continues until travel through all elements in described collaboration user set, or the element number of inquiring about equals the little antenna for base station number of described focus and subtracts 1, according to described focus little base station service-user to the service channel of the little base station of this focus and orthogonal base vectors corresponding to the element of all inquiries, calculate the received beam forming vectors of described focus little base station service-user, make it to be in the kernel of orthogonal base vectors Special composition corresponding to described all elements inquired about.

Preferably, in an embodiment of the present invention, the described scheduling carrying out described focus little base station service-user according to described received beam forming vectors, can comprise: in conjunction with the described beamforming vector that described focus little base station interference coordination Physical Resource Block calculates, estimate that the up channel gain of described focus little base station service-user is to perform frequency selectivity uplink scheduling.

Corresponding to said method embodiment, as shown in Figure 3, be a kind of heterogeneous hierarchical Radio Network System of embodiment of the present invention uplink interference coordination apparatus structure schematic diagram, described device comprises:

Acquiring unit 1, for utilizing the little base station of focus to obtain with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference, and causes the macro base station user of interference to the uplink interference channel of the little base station of described focus described in detection;

Computing unit 2, for causing the macro base station user profile of interference to the little base station of described focus according to described and describedly cause the macro base station user of interference to the uplink interference channel of the little base station of described focus, described in structure, cause the kernel of the macro base station user uplink interference channel of interference to obtain the received beam forming vectors of described focus little base station service-user;

Scheduling unit 3, for carrying out the scheduling of described focus little base station service-user according to described received beam forming vectors.

Preferably, as shown in Figure 4, for the embodiment of the present invention another kind of heterogeneous hierarchical Radio Network System uplink interference coordination apparatus structure schematic diagram, described device not only comprises above-mentioned acquiring unit 1, computing unit 2, scheduling unit 3, described device can also comprise: trigger element 4, the little base station of focus is utilized to obtain with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference for described acquiring unit 1, and detection described in cause the macro base station user of interference to the little base station of described focus uplink interference channel before, detect the up interference triggered isomery interference coordination be subject in the little base station of described focus.It should be noted that, the present invention can trigger isomery interference coordination by detecting, and to improve the throughput of each focus little base station service-user, improves the performance of the little base station of focus, and improves resource utilization.

Further, described trigger element 4, is further used for periodically detecting the little base station cell load of described focus and the interference of adjacent cell on different Physical Resource Block, if the interference on same Resource Block is greater than predetermined threshold, triggers isomery dynamic interference coordination.It should be noted that, the present invention can by periodically detecting, when being necessary (if the interference on same Resource Block is greater than predetermined threshold) trigger isomery interference coordination, to improve the throughput of each focus little base station service-user further, the performance of the further little base station of raising focus, and improve resource utilization further.

Preferably, described acquiring unit 1, be further used for all macro base station information at the adjacent cell place traveling through the little base station of described focus, the macro base station user ID little base station of described focus being caused to interference corresponding to described focus little base station interference coordination Physical Resource Block is received from inter-base station interface, obtain interference source macro base station user set, and obtain uplink interference intensity and the uplink reference signals configuration information of each macro base station user in described interference source macro base station user set.

Preferably, described acquiring unit 1, be further used for the uplink reference signals configuration information according to macro base station user in described interference source macro base station user set, described focus little base station interference coordination Physical Resource Block detects the uplink channel status information of all macro base station users in interference source macro base station user set, obtain described interference coordination Physical Resource Block in each dispatching cycle from inter-base station interface be subject to macro base station scheduling and be in the macro base station user ID in corresponding described interference source macro base station user set, described macro base station user ID is put into collaboration user set, and element is wherein sorted from big to small according to described uplink interference intensity.

Preferably, described computing unit 2, be further used on the interference coordination Physical Resource Block of described focus little base station, traversal focus little base station service-user, for the collaboration user set on this interference coordination Physical Resource Block, inquire about the element in described collaboration user set from front to back, macro base station user corresponding for first element is set to the first orthogonal dimension base vector to the interference channel of the little base station of described focus, for each element afterwards, according to macro base station user corresponding to this element to the interference channel of the little base station of described focus and orthogonal base vectors that before it, all elements is corresponding, calculate the orthogonal base vectors that described macro base station user is corresponding, make it to be in the kernel of all orthogonal base vectors above, inquiry continues until travel through all elements in described collaboration user set, or the element number of inquiring about equals the little antenna for base station number of described focus and subtracts 1, according to described focus little base station service-user to the service channel of the little base station of this focus and orthogonal base vectors corresponding to the element of all inquiries, calculate the received beam forming vectors of described focus little base station service-user, make it to be in the kernel of orthogonal base vectors Special composition corresponding to described all elements inquired about.

Preferably, described scheduling unit 3, is further used for the described beamforming vector in conjunction with described focus little base station interference coordination Physical Resource Block calculates, and estimates that the up channel gain of described focus little base station service-user is to perform frequency selectivity uplink scheduling.

Embodiment of the present invention said method or device technique scheme have following beneficial effect: utilize the little base station of focus to obtain with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference because adopt, and cause the macro base station user of interference to the uplink interference channel of the little base station of described focus described in detection; The macro base station user profile of interference is caused to the little base station of described focus according to described and describedly cause the macro base station user of interference to the uplink interference channel of the little base station of described focus, described in structure, cause the kernel of the macro base station user uplink interference channel of interference to obtain the received beam forming vectors of described focus little base station service-user; The technological means of the scheduling of described focus little base station service-user is carried out according to described received beam forming vectors, so macro base station user can be suppressed preferably to the uplink interference of the little base station of focus, thus reduce the interference-to-noise ratio (InterferenceoverThermal of the little base station of focus, IoT), improve upstream sinr and the throughput of each focus little base station service-user, and improve community average throughput; In addition, owing to not needing interaction of user data information between macro base station and the little base station of focus, therefore the expense of the interface of receiving node is also lower.

It should be noted that, the present invention can provide a kind of heterogeneous hierarchical Radio Network System uplink interference coordination focus little base station, and the little base station of described focus comprises above-mentioned heterogeneous hierarchical Radio Network System uplink interference coordination device, below lifts application example and is described:

(LTE-A is the abbreviation of LongTermEvolution-Advanced based on LTE-A to suppose one, the follow-up evolution of Long Term Evolution LTE technology) heterogeneous network of system, topological network is formed by the Hot Spot in multiple macrocell and its coverage, macrocell is expressed as m=1, ..., M; The N number of Hot Spot of random distribution in each macrocell coverage area, using isomery picocell (Pico) to be described for example here for ease of describing, therefore always having MN isomery picocell in topological network, be expressed as n=1, ..., MN, the user of access macrocell is expressed as user PUE in access isomery picocell is expressed as isomery picocell can running time-frequency resource set expression be L (n).As shown in Figure 5, be the topological scene schematic diagram of application example of the present invention: the interference source in up going route of isomery femto base station may from the user of the user of place macrocell, adjacent macro cell and other isomery picocell users with frequency; Because geographic isolation degree is higher, the interference from other same isomery picocell users frequently can be ignored.

Being described below in conjunction with Fig. 6 and Fig. 7: as shown in Figure 6, is application example heterogeneous hierarchical Radio Network System up-link interference coordination method flow chart of the present invention; As shown in Figure 7, be the refinement flow chart of application example Fig. 6 heterogeneous hierarchical Radio Network System up-link interference coordination method of the present invention, specifically comprise the steps:

10, periodically detect the little base station cell load of described focus and the interference of adjacent cell on different Physical Resource Block, if the interference on same Resource Block is greater than predetermined threshold, trigger isomery dynamic interference coordination.

Specifically comprise the steps:

11, for any isomery femto base station n, initialization TTI_index=0.Here TTI_index represents the sequence number of dispatching cycle.In lte-a system, the cycle that Transmission Time Interval (TTI) is namely once dispatched is generally a dispatching cycle with 1ms.

12, judge whether current time reaches uplink interference sense cycle, if it is perform step 13, otherwise perform step 21.

13, on all available ascending resource blocks of isomery femto base station traversal, uplink interference is detected.

14, for Physical Resource Block l, judge whether the interference value detected on the resource exceedes predetermined thresholding I _thr, if so, then perform step 141, otherwise perform step 142:

141, on current resource block, trigger isomery interference coordination, then go to step 15.

142, on current resource block, do not trigger isomery interference coordination, then go to step 15.

15, judge whether to travel through all Resource Block, if it is perform step 21, otherwise perform step 13, continue to detect remaining Resource Block.

20, all macro base station information at the adjacent cell place of the little base station of described focus are traveled through, the macro base station user ID little base station of described focus being caused to interference corresponding to described focus little base station interference coordination Physical Resource Block is received from inter-base station interface, obtain interference source macro base station user set, and obtain uplink interference intensity and the uplink reference signals configuration information of each macro base station user in described interference source macro base station user set.

Specifically comprise the steps:

21, for any isomery femto base station n, initialization interference source macro base station user gathers travel through all available resources, initialization cooperation set s set _intfthe MUE of larger uplink interference can be caused to isomery femto base station when () is for depositing and sending signal n; S set _coMP(n, l) is subject to macro base station scheduling for depositing in current dispatching cycle and is in S set _intfn the MUE in (), namely Resource Block l produces the MUE of actual interference to isomery femto base station.The relation of two set is $\underset{l\∈L\left(n\right)}{\∪}{S}_{CoMP}(n,l)\⊆S_{Intf}\left(n\right).$

22, traversal triggers the Resource Block of isomery interference coordination, for Resource Block l, obtains the interference source macro base station user S set of macro base station transmission from X2 interface _intfthe interference strength of each MUE and its uplink reference signals configuration adopted in (n), set.Consider in lte-a system, the path loss that the uplink transmission power of user obtains according to down-run survey compensates, for being in macrocell edge and the MUE nearer with geographical position, isomery picocell, on the one hand there is larger transmitting power, lower to the power attenuation being disturbed isomery femto base station on the other hand, thus larger uplink interference is caused to isomery femto base station; Therefore, in the present embodiment, utilize MUE to represent interference strength to macro base station and the path-loss difference value between isomery femto base station, the larger then interference strength of difference is larger.In this step, this community path loss difference can be greater than predetermined path-loss difference value thresholding PL by macro base station _thrn the MUE of () puts into S set _intfin (n), and by X2 interface by S set _intfn () passes to isomery femto base station.For any macro base station m, the acquisition of path-loss difference value can be implemented as:

The MUE of traversal access, for any MUE first calculate respectively isomery femto base station n and the path loss (dB value) to serving BS m, computational methods are expressed as

$\begin{array}{c}{\mathrm{PL}}_n^{k_m^M}=P_t\left(n\right)-{\mathrm{RSRP}}_{k_m^M}^n\\ {\mathrm{PL}}_m^{k_m^M}=P_t\left(m\right)-{\mathrm{RSRP}}_{k_m^M}^m\end{array}---\left(1\right)$

Wherein P _tm () represents the reference signal transmitting power of serving BS m, P _tn () represents the downlink reference signal transmitting power of isomery femto base station n, be both indicated to the MUE of this community of access by the downlink broadcast of macro base station, P _tn () can pass to macro base station by isomery femto base station n by X2 interface.

MUE be expressed as to isomery femto base station n with to the path-loss difference value (dB value) of serving BS m

${\mathrm{\ΔPL}}_n^m\left(k_m^M\right)={\mathrm{PL}}_m^{k_m^M}-{\mathrm{PL}}_n^{k_m^M}---\left(2\right)$

MUE judge whether be greater than thresholding PL _thrn (), if be greater than this thresholding, then report to serving BS m and indicates the interference of isomery femto base station n, and report corresponding simultaneously pL _thrn () is a specific threshold value in isomery picocell, can pass to macro base station by isomery femto base station n by X2 interface.Do not consider the impact of multipath fading, when when path-loss difference value to serving macro base station m and isomery femto base station n is greater than 0dB, interference signal be greater than the target received power of isomery picocell n service-user in the received power at isomery femto base station n place, thus cause larger interference, therefore can by path-loss difference value thresholding PL _thrn the default value of () is set to 0dB, the uplink interference making isomery femto base station avoid the multilayer coverage property due to heterogeneous network to bring.

30, according to the uplink reference signals configuration information of macro base station user in described interference source macro base station user set, described focus little base station interference coordination Physical Resource Block detects the uplink channel status information of all macro base station users in interference source macro base station user set, obtain described interference coordination Physical Resource Block in each dispatching cycle from inter-base station interface be subject to macro base station scheduling and be in the macro base station user ID in corresponding described interference source macro base station user set, described macro base station user ID is put into collaboration user set, and element is wherein sorted from big to small according to described uplink interference intensity.

Specifically comprise the steps:

31, isomery femto base station n detects S set according to reference signal configuration on the Resource Block l triggering isomery interference coordination _intfthe up channel of MUE in (n). in lte-a system, isomery femto base station can obtain the uplink interference channel of these users by the uplink reference signals SRS detecting MUE, because SRS is periodic transmission, isomery picocell needs the regular hour to do channel detection, therefore potential interference source is informed isomery femto base station by macro base station in advance, is convenient to isomery femto base station n at S _intfutilize detected interference channel to do wave beam zero after MUE scheduled in (n) to fall into.

32, isomery femto base station n receives by X2 interface the MUEID that on interference coordination Physical Resource Block l, macro base station m transmits, and puts it into collaboration user S set _coMPin (n, l), and according to sort from big to small.In this step, isomery femto base station needs the cooperative information receiving the transmission of cooperation macro base station, and the content that cooperation macro base station performs comprises:

A. macro base station independently dispatches MUE.Due to uplink interference in heterogeneous system mainly MUE bring isomery femto base station, and the interference of PUE to macro base station is lower, and therefore the user scheduling process of macro base station can independently perform, and does not need the cooperation of isomery femto base station.

B. macro base station will this intra-cell interference coordinate Resource Block l be dispatched and be in S set _intfn the MUEID in () passes to isomery femto base station n by X2 interface; Macro base station, by passing to isomery femto base station by producing more strongly disturbing MUE to isomery femto base station in current dispatching cycle, making isomery picocell can perform wave beam zero for these strong interferers user and falling into, reaching the object suppressing interference.

Consider that isomery picocell that different antennae configures has different wave beams zero and falls into ability, if S set _coMPin (n, l), interference source number is too much, can carry out wave beam zero fall into, therefore to S set the strongest a part of interference source _coMP(n, l) sorts from big to small according to interference strength.

40, on the interference coordination Physical Resource Block of described focus little base station, traversal focus little base station service-user, for the collaboration user set on this interference coordination Physical Resource Block, inquire about the element in described collaboration user set from front to back, macro base station user corresponding for first element is set to the first orthogonal dimension base vector to the interference channel of the little base station of described focus, for each element afterwards, according to macro base station user corresponding to this element to the interference channel of the little base station of described focus and orthogonal base vectors that before it, all elements is corresponding, calculate the orthogonal base vectors that described macro base station user is corresponding, make it to be in the kernel of all orthogonal base vectors above, inquiry continues until travel through all elements in described collaboration user set, or the element number of inquiring about equals the little antenna for base station number of described focus and subtracts 1, according to described focus little base station service-user to the service channel of the little base station of this focus and orthogonal base vectors corresponding to the element of all inquiries, calculate the received beam forming vectors of described focus little base station service-user, make it to be in the kernel of orthogonal base vectors Special composition corresponding to described all elements inquired about.

Specifically comprise the steps:

41, isomery femto base station n travels through this community user, on interference coordination Physical Resource Block l, for any access user by S set _coMPmUE (being expressed as k (1)) the uplink interference channel that in (n, l), first element i=1 is corresponding (is expressed as ) be set to the first orthogonal dimension base vector, namely by element numbers i+1, namely from S set _coMPsecond element in (n, l) is inquired about backward, performs step (42).

42, for i-th element, the MUE interference channel that this element is corresponding is utilized and element j=1 ..., the orthogonal base vectors that i-1 is corresponding calculate the orthogonal base vectors that element i is corresponding, make it to be in kernel in.Concrete formula is expressed as

$g_{n,l}^{k\left(i\right)}=h_{n,l}^{k\left(i\right)}-\underset{j=1}{\overset{i-1}{\Σ}}\frac{{\left(g_{n,l}^{k\left(j\right)}\right)}^H{h}_{n,l}^{k\left(i\right)}}{\left|\right|g_{n,l}^{k\left(j\right)}|{|}^2}{g}_{n,l}^{k\left(j\right)},i\≥2---\left(3\right)$

Wherein || || represent vector field homoemorphism.From this formula, the i-th orthogonal dimension base vector and jth=1 ..., i-1 orthogonal dimension base vector is orthogonal, is therefore in S set _coMP(n, l) jth=1 ..., in the kernel of the channel Special composition that i-1 element is corresponding, namely as shown in Figure 8, be the organigram of application example orthogonal base vectors of the present invention, wherein, the 3rd orthogonal dimension base vector is arranged in the kernel of the 1st orthogonal dimension base vector and the 2nd orthogonal dimension base vector Special composition.

43, isomery femto base station n judges whether that the element number i inquired about reaches S set _coMPthe element number of (n, l) (be expressed as | S _coMP(n, l) |), or reach N _t(n)-1.If meet both one of, then perform step (44), otherwise i+1 performed step (42).Number of antennas is N _tthe isomery femto base station of (n) can space resources dimension be N _tn (), therefore can eliminate from N at most _tthe presence of intercell interference of (n)-1 user.If N _t(n)-1>=| S _coMP(n, l) |, isomery femto base station can be eliminated all | S _coMP(n, l) | interference, remaining N _t(n)-| S _coMP(n, l) | individual space resources dimension can serve the PUE of this community; If N _t(n)-1 < | S _coMP(n, l) |, then isomery femto base station is to set | S _coMP(n, l) | front N _tn ()-1, namely disturbs the strongest N _tn ()-1 MUE carries out wave beam zero falls into, and the space resources dimension for this community useful signal is 1.

44, for access user isomery femto base station is according to its service channel with all elements j=1 inquired about in set ..., the orthogonal base vectors of i calculate corresponding orthogonal base vectors make it to be in kernel in.Concrete formula is expressed as

$g_{n,l}^{k_n^P}=h_{n,l}^{k_n^P}-\underset{j=1}{\overset{i}{\&Sigma;}}\frac{{\left(g_{n,l}^{k\left(j\right)}\right)}^H{h}_{n,l}^{k_n^P}}{\left|\right|g_{n,l}^{k\left(j\right)}|{|}^2}{g}_{n,l}^{k\left(j\right)},i=\max \left(\right|S_{CoMP}\left(n,l\right)|,N_t(n)-1)---\left(4\right)$

Right normalization obtains isomery picocell user reception vector, be expressed as

${\left(w_{k_n^P,l}\right)}^H={\left(g_{n,l}^{k_n^P}\right)}^H/\left|\right|g_{n,l}^{k_n^P}\left|\right|---\left(5\right)$

Like this be in interference channel in the kernel in the space formed, namely ${\left(w_{k_n^P,l}\right)}^H{h}_{n,l}^{k\left(j\right)}=0,\&ForAll;j=1,\mathrm{...},\max \left(\right|S_{CoMP}(n,l)|,N_t(n)-1).$ The wave beam zero proposed at application example of the present invention falls in scheme, by construction set S _coMPin (n, l), the kernel of MUE interference channel is as the received beam forming vectors of isomery picocell service user, can eliminate from S under the condition that uplink channel information is desirable _coMPin (n, l), the uplink interference of MUE, also can play inhibitory action to uplink interference under non-ideal communication channel information condition.

Suppose that the MUE set that isomery femto base station n carries out wave beam zero sunken is S _iC(n, l), this set is by S set _coMPthe front max of (n, l) (| S _coMP(n, l) |, N _t(n)-1) individual element formation, then isomery picocell user k _nup input---export expression formula be:

$\begin{array}{c}{y}_{k_n^P,l}={\left(w_{k_n^P,l}\right)}^H{h}_{n,l}^{k_n^P}{x}_{k_n^P,l}+\underset{p\&Element;S_{IC}(n,l)}{\&Sigma;}{\left(w_{k_n^P,l}\right)}^H{h}_{n,l}^p{x}_{p,l}+\underset{q\&NotElement;S_{IC}(n,l)}{\&Sigma;}{\left(w_{k_n,l}\right)}^H{h}_{n,l}^q{x}_{q,l}+{\left(w_{k_n^P,l}\right)}^{H}n\\ ={\left(w_{k_n^P,l}\right)}^H{h}_{n,l}^{k_n^P}{x}_{k_n^P,l}+\underset{q\&NotElement;S_{IC}(n,l)}{\&Sigma;}{\left(w_{k_n^P,l}\right)}^H{h}_{n,l}^q{x}_{q,l}+{\left(w_{k_n^P,l}\right)}^{H}n\end{array}---\left(6\right)$

Wherein presence of intercell interference come from isomery femto base station n and be not the sunken MUE of wave beam zero, or the user of the isomery picocell of other identical networkings.

50, in conjunction with the described beamforming vector that described focus little base station interference coordination Physical Resource Block calculates, estimate that the up channel gain of described focus little base station service-user is to perform frequency selectivity uplink scheduling.

Specifically comprise the steps:

51, isomery femto base station n is according to user on interference coordination Physical Resource Block l received beam forming vectors, in conjunction with the uplink scheduling of received beam forming vectors completing user.For any user isomery femto base station utilizes uplink reference signals to detect and obtains channel with the received beam forming vectors obtained in step 4 calculate the received signal power of this user

$P_r(k_n^P,l)={\left|{\left(w_{k_n^P,l}\right)}^H{h}_{n,l}^{k_n^P}\right|}^2---\left(7\right)$

Interference power (linear value) is expressed as

$I_n=IoT\left(n\right)\&CenterDot;{\mathrm{\&sigma;}}_n^2---\left(8\right)$

Wherein IoT (n) represents the interference-to-noise ratio of isomery picocell n, also namely disturbs lifting coefficient, represent noise power.Isomery picocell user sINR estimated value be expressed as

${\mathrm{SINR}}_{k_n^P,l}=\frac{P_r(k_n^P,l)}{I_n+{\mathrm{\&sigma;}}_n^2}=\frac{{\left|{\left(w_{k_n^P,l}\right)}^H{h}_{n,l}^{k_n^P}\right|}^2}{(1+IoT(n\left)\right){\mathrm{\&sigma;}}_n^2}---\left(9\right)$

SINR according to estimation obtains up modulation coding mode (MCS), and calculates up momentary rate isomery femto base station n performs uplink scheduling according to the momentary rate on each running time-frequency resource l, the priority factors of scheduling be expressed as and relevant function for proportional fair scheduling, wherein represent user average throughput in a time window.

After the execution of this step terminates, by TTI+1, again go to step 12 and enter the next judgement carrying out uplink interference coordination dispatching cycle.

The above-mentioned application example of the present invention provides one and is applied to heterogeneous hierarchical Radio Network System up-link interference coordination method, MUE can be suppressed preferably to the uplink interference of the little base station of focus, thus reduce the interference-to-noise ratio IoT of the little base station of focus, improve upstream sinr and the throughput of each hotspot users, and improve community average throughput; In addition, owing to not needing interaction of user data information between macro base station and the little base station of focus, therefore the expense of the interface of receiving node is also lower.

Those skilled in the art can also recognize the various illustrative components, blocks (illustrativelogicalblock) that the embodiment of the present invention is listed, unit, and step can pass through electronic hardware, computer software, or both combinations realize.For the replaceability (interchangeability) of clear displaying hardware and software, above-mentioned various illustrative components (illustrativecomponents), unit and step have universally described their function.Such function is the designing requirement realizing depending on specific application and whole system by hardware or software.Those skilled in the art for often kind of specifically application, can use the function described in the realization of various method, but this realization can should not be understood to the scope exceeding embodiment of the present invention protection.

Various illustrative logical block described in the embodiment of the present invention, or unit can pass through general processor, digital signal processor, application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the design of above-mentioned any combination realizes or operates described function.General processor can be microprocessor, and alternatively, this general processor also can be any traditional processor, controller, microcontroller or state machine.Processor also can be realized by the combination of calculation element, such as digital signal processor and microprocessor, multi-microprocessor, and a Digital Signal Processor Core combined by one or more microprocessor, or other similar configuration any realizes.

The software module that method described in the embodiment of the present invention or the step of algorithm directly can embed hardware, processor performs or the combination of both.Software module can be stored in the storage medium of other arbitrary form in RAM memory, flash memory, ROM memory, eprom memory, eeprom memory, register, hard disk, moveable magnetic disc, CD-ROM or this area.Exemplarily, storage medium can be connected with processor, with make processor can from storage medium reading information, and write information can be deposited to storage medium.Alternatively, storage medium can also be integrated in processor.Processor and storage medium can be arranged in ASIC, and ASIC can be arranged in user terminal.Alternatively, processor and storage medium also can be arranged in the different parts in user terminal.

In one or more exemplary design, the above-mentioned functions described by the embodiment of the present invention can realize in the combination in any of hardware, software, firmware or this three.If realized in software, these functions can store on the medium with computer-readable, or are transmitted on the medium of computer-readable with one or more instruction or code form.Computer readable medium comprises computer storage medium and is convenient to make to allow computer program transfer to the communication medium in other place from a place.Storage medium can be that any general or special computer can the useable medium of access.Such as, such computer readable media can include but not limited to RAM, ROM, EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage device, or other anyly may be used for carrying or store the medium that can be read the program code of form with instruction or data structure and other by general or special computer or general or special processor.In addition, any connection can be properly termed computer readable medium, such as, if software is by a coaxial cable, optical fiber computer, twisted-pair feeder, Digital Subscriber Line (DSL) or being also comprised in defined computer readable medium with wireless way for transmittings such as such as infrared, wireless and microwaves from a web-site, server or other remote resource.Described video disc (disk) and disk (disc) comprise Zip disk, radium-shine dish, CD, DVD, floppy disk and Blu-ray Disc, and disk is usually with magnetic duplication data, and video disc carries out optical reproduction data with laser usually.Above-mentioned combination also can be included in computer readable medium.

Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection range be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (8)

1. a heterogeneous hierarchical Radio Network System up-link interference coordination method, is characterized in that, described method comprises:

Utilize the little base station of focus to obtain with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference, and cause the macro base station user of interference to the uplink interference channel of the little base station of described focus described in detection;

The macro base station user profile of interference is caused to the little base station of described focus according to described and describedly cause the macro base station user of interference to the uplink interference channel of the little base station of described focus, described in structure, cause the kernel of the macro base station user uplink interference channel of interference to obtain the received beam forming vectors of described focus little base station service-user;

The scheduling of described focus little base station service-user is carried out according to described received beam forming vectors.

2. method as claimed in claim 1, it is characterized in that, the described little base station of focus that utilizes obtains with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference, and detection described in cause the macro base station user of interference to the little base station of described focus uplink interference channel before, described method also comprises:

Detect the up interference triggered isomery interference coordination be subject in the little base station of described focus; The up interference triggered isomery interference coordination be subject in the little base station of the described focus of described detection, comprise: periodically detect the little base station cell load of described focus and the interference of adjacent cell on different Physical Resource Block, if the interference on same Resource Block is greater than predetermined threshold, trigger isomery dynamic interference coordination.

3. method as claimed in claim 1 or 2, is characterized in that,

The described little base station of focus that utilizes obtains with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference, comprise: all macro base station information traveling through the adjacent cell place of the little base station of described focus, the macro base station user ID little base station of described focus being caused to interference corresponding to described focus little base station interference coordination Physical Resource Block is received from inter-base station interface, obtain interference source macro base station user set, and obtain uplink interference intensity and the uplink reference signals configuration information of each macro base station user in described interference source macro base station user set;

Cause the macro base station user of interference to the uplink interference channel of the little base station of described focus described in described detection, comprise: according to the uplink reference signals configuration information of macro base station user in described interference source macro base station user set, described focus little base station interference coordination Physical Resource Block detects the uplink channel status information of all macro base station users in interference source macro base station user set, obtain described interference coordination Physical Resource Block in each dispatching cycle from inter-base station interface be subject to macro base station scheduling and be in the macro base station user ID in corresponding described interference source macro base station user set, described macro base station user ID is put into collaboration user set, and element is wherein sorted from big to small according to described uplink interference intensity.

4. method as claimed in claim 3, it is characterized in that, describedly the macro base station user profile of interference is caused to the little base station of described focus according to described and describedly cause the macro base station user of interference to the uplink interference channel of the little base station of described focus, cause the kernel of the macro base station user uplink interference channel of interference to obtain the received beam forming vectors of described focus little base station service-user described in structure, comprising:

On the interference coordination Physical Resource Block of described focus little base station, traversal focus little base station service-user, for the collaboration user set on this interference coordination Physical Resource Block, inquire about the element in described collaboration user set from front to back, macro base station user corresponding for first element is set to the first orthogonal dimension base vector to the interference channel of the little base station of described focus, for each element afterwards, according to macro base station user corresponding to this element to the interference channel of the little base station of described focus and orthogonal base vectors that before it, all elements is corresponding, calculate the orthogonal base vectors that described macro base station user is corresponding, make it to be in the kernel of all orthogonal base vectors above, inquiry continues until travel through all elements in described collaboration user set, or the element number of inquiring about equals the little antenna for base station number of described focus and subtracts 1,

According to described focus little base station service-user to the service channel of the little base station of this focus and orthogonal base vectors corresponding to the element of all inquiries, calculate the received beam forming vectors of described focus little base station service-user, make it to be in the kernel of orthogonal base vectors Special composition corresponding to described all elements inquired about;

The described scheduling carrying out described focus little base station service-user according to described received beam forming vectors, comprising:

In conjunction with the described beamforming vector that described focus little base station interference coordination Physical Resource Block calculates, estimate that the up channel gain of described focus little base station service-user is to perform frequency selectivity uplink scheduling.

5. a heterogeneous hierarchical Radio Network System uplink interference coordination device, is characterized in that, described device comprises:

Acquiring unit, for utilizing the little base station of focus to obtain with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference, and causes the macro base station user of interference to the uplink interference channel of the little base station of described focus described in detection;

Computing unit, for causing the macro base station user profile of interference to the little base station of described focus according to described and describedly cause the macro base station user of interference to the uplink interference channel of the little base station of described focus, described in structure, cause the kernel of the macro base station user uplink interference channel of interference to obtain the received beam forming vectors of described focus little base station service-user;

Scheduling unit, for carrying out the scheduling of described focus little base station service-user according to described received beam forming vectors.

6. device as claimed in claim 5, it is characterized in that, described device also comprises:

Trigger element, the little base station of focus is utilized to obtain with cooperating between macro base station the macro base station user profile little base station of described focus being caused to interference for described acquiring unit, and detection described in cause the macro base station user of interference to the little base station of described focus uplink interference channel before, detect the up interference triggered isomery interference coordination be subject in the little base station of described focus; Described trigger element, is further used for periodically detecting the little base station cell load of described focus and the interference of adjacent cell on different Physical Resource Block, if the interference on same Resource Block is greater than predetermined threshold, triggers isomery dynamic interference coordination.

7. device as described in claim 5 or 6, is characterized in that,

Described acquiring unit, be further used for all macro base station information at the adjacent cell place traveling through the little base station of described focus, the macro base station user ID little base station of described focus being caused to interference corresponding to described focus little base station interference coordination Physical Resource Block is received from inter-base station interface, obtain interference source macro base station user set, and obtain uplink interference intensity and the uplink reference signals configuration information of each macro base station user in described interference source macro base station user set;

Described acquiring unit, be further used for the uplink reference signals configuration information according to macro base station user in described interference source macro base station user set, described focus little base station interference coordination Physical Resource Block detects the uplink channel status information of all macro base station users in interference source macro base station user set, obtain described interference coordination Physical Resource Block in each dispatching cycle from inter-base station interface be subject to macro base station scheduling and be in the macro base station user ID in corresponding described interference source macro base station user set, described macro base station user ID is put into collaboration user set, and element is wherein sorted from big to small according to described uplink interference intensity.

8. device as claimed in claim 7, is characterized in that,

Described computing unit, be further used on the interference coordination Physical Resource Block of described focus little base station, traversal focus little base station service-user, for the collaboration user set on this interference coordination Physical Resource Block, inquire about the element in described collaboration user set from front to back, macro base station user corresponding for first element is set to the first orthogonal dimension base vector to the interference channel of the little base station of described focus, for each element afterwards, according to macro base station user corresponding to this element to the interference channel of the little base station of described focus and orthogonal base vectors that before it, all elements is corresponding, calculate the orthogonal base vectors that described macro base station user is corresponding, make it to be in the kernel of all orthogonal base vectors above, inquiry continues until travel through all elements in described collaboration user set, or the element number of inquiring about equals the little antenna for base station number of described focus and subtracts 1, according to described focus little base station service-user to the service channel of the little base station of this focus and orthogonal base vectors corresponding to the element of all inquiries, calculate the received beam forming vectors of described focus little base station service-user, make it to be in the kernel of orthogonal base vectors Special composition corresponding to described all elements inquired about,

Described scheduling unit, is further used for the described beamforming vector in conjunction with described focus little base station interference coordination Physical Resource Block calculates, and estimates that the up channel gain of described focus little base station service-user is to perform frequency selectivity uplink scheduling.