CN103391552A - Uplink interference coordination method and device of layered heterogeneous wireless network - Google Patents

Abstract

An embodiment of the invention provides an uplink interference coordination method and device of a layered heterogeneous wireless network. The uplink interference coordination method includes: obtaining information of macro base station users causing interference on hot spot small base stations by utilizing cooperation between the hot spot small base stations and the macro base stations, and detecting an uplink interference channel between the macro base station users causing the interference and the hot spot small base stations; constructing a null space of the uplink interference channel of the macro base station users causing the interference according to the information of the macro base station users causing interference on the hot spot small base stations and the uplink interference channel between the macro information channel users causing the interference and the hot spot small base stations to obtain reception shaped beam vectors of service users of the hot spot small base stations; performing coordination on the service users of the hot spot small base stations according to the received shaped beam vectors. The uplink interference coordination method and device can well restrain uplink interference of the macro base station users on the hot spot small base stations, accordingly reduces interference noise ratio of the hot spot small base stations, and improves uplink SINR and handling capacity of the users.

Description

Heterogeneous hierarchical Radio Network System uplink interference coordination approach and device

Technical field

The present invention relates to the heterogeneous wireless network technical field, relate in particular to heterogeneous hierarchical Radio Network System uplink interference coordination approach and device.

Background technology

Development along with mobile communication technology, the spectrum efficiency of the macrocellular network of point-to-point has reached theoretical limit, be difficult to meet ever-increasing user's request, lay the heterogeneous nodes of multilayer low-power, little covering in macrocell coverage area, such as picocell (Pico), relaying, Home eNodeB, spaced antenna etc., elevator system spectrum efficiency and improve residential quarter and cover effectively, and meet the high speed business demand of user under the focus scene.3GPP, the standardization bodies such as 802.16 all for the application start of heterogeneous network in the 4th third-generation mobile communication corresponding research.In order to improve system spectral efficiency, macrocell and hot spot networks can adopt identical networking, but the multilayer coverage property due to heterogeneous network, this networking mode can bring the interference between macrocell and Hot Spot, for up, interference source mainly comes from the grand user in the edge nearer apart from hot spot networks (Macrocell User Equipment, MUE).As shown in Figure 1, for the uplink interference schematic diagram of macro base station user to the little base station of focus: have edge customer MUE1, MUE3 and central user MUE2 in macrocell coverage area, wherein MUE1 and MUE2 are nearer apart from the little base station of focus, and MUE3 is far away apart from the little base station of focus; If require the target Signal to Interference plus Noise Ratio of MUE arrival macro base station identical, the MUE1 uplink transmission power is far above MUE2, although MUE3 also is in the macrocell edge, but its distance to Hot Spot is greater than MUE1, therefore, its uplink interference that little base station of focus service-user PUE is caused is also much smaller than MUE1.Therefore, MUE1 is to the little base station of focus service-user---user PUE(Pico User Equipment, PUE in picocell) and the uplink interference that causes is far above MUE2 and MUE3.This shows how to suppress the uplink interference of macro base station user to the little base station of focus, this is a technical problem that needs to be resolved hurrily, and prior art is perfect solution without comparison also.

Summary of the invention

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

On the one hand, the embodiment of the present invention provides a kind of heterogeneous hierarchical Radio Network System uplink interference coordination approach, described method comprises: utilize cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference, and survey the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause; According to described, the macro base station user profile of interference and the described macro base station user who the causes interference uplink interference channel to the little base station of described focus is caused in the little base station of described focus, construct the kernel of the described macro base station user uplink interference channel that causes interference to obtain the received beam figuration vector of the little base station of described focus service-user; Carry out the scheduling of the little base station of described focus service-user according to described received beam figuration vector.

Preferably, in an embodiment of the present invention, describedly utilize cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference, and survey the described macro base station user who causes interference to before the uplink interference channel of the little base station of described focus, described method can also comprise: detect the up interference triggered isomery interference coordination that is 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 that is 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, greater than subscribing threshold value, triggers the isomery dynamic interference coordination.

preferably, in an embodiment of the present invention, describedly utilize cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference, can comprise: all macro base station information that travel through the adjacent cell place of the little base station of described focus, from inter-base station interface receive the little base station of described focus interference coordination Physical Resource Block corresponding the macro base station user ID of interference is caused in the little base station of described focus, 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, the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause of 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, survey the up channel state information of all macro base station users in interference source macro base station user set on the interference coordination Physical Resource Block of the little base station of described focus, macro base station user ID being subject to the macro base station scheduling in each dispatching cycle from the described interference coordination Physical Resource Block of inter-base station interface acquisition and being in corresponding described interference source macro base station user set, described macro base station user ID is put into the 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 according to described macro base station user profile and the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause that the little base station of described focus is caused interference, construct the kernel of the described macro base station user uplink interference channel that causes interference to obtain the received beam figuration vector of the little base station of described focus service-user, can comprise: on the interference coordination Physical Resource Block of the little base station of described focus, the traversal little base station of focus service-user, for the collaboration user set on this interference coordination Physical Resource Block, inquire about from front to back the element in described collaboration user set, macro base station user corresponding to 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, the macro base station user corresponding according to this element to the interference channel of the little base station of described focus with and all elements is corresponding before orthogonal basis vector, calculate orthogonal basis vector corresponding to described macro base station user, make it to be in the kernel of all orthogonal basis vectors of front, inquiry continues until travel through all elements in described collaboration user set, the element number of perhaps inquiring about equals the little antenna for base station number of described focus and subtracts 1, base station little of described focus service-user is to service channel and the orthogonal basis vector corresponding to all elements of inquiring about of this little base station of focus, calculate the received beam figuration vector of the little base station of described focus service-user, make it to be in the kernel of orthogonal basis vector Special composition corresponding to described all elements of inquiring about.

Preferably, in an embodiment of the present invention, describedly according to described received beam figuration vector, carry out the scheduling of the little base station of described focus service-user, can comprise:, in conjunction with the described wave beam forming vector that calculates on the interference coordination Physical Resource Block of the little base station of described focus, estimate that the up channel of the little base station of described focus service-user gains to carry out the frequency selectivity uplink scheduling.

On the other hand, the embodiment of the present invention provides a kind of heterogeneous hierarchical Radio Network System uplink interference conditioning unit, described device comprises: acquiring unit, be used for utilizing cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference, and survey the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause; Computing unit, be used for the macro base station user profile and the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause that the little base station of described focus are caused interference according to described, construct the kernel of the described macro base station user uplink interference channel that causes interference to obtain the received beam figuration vector of the little base station of described focus service-user; Scheduling unit, be used for carrying out the scheduling of the little base station of described focus service-user according to described received beam figuration vector.

Preferably, in an embodiment of the present invention, described device can also comprise: trigger element, being used for described acquiring unit utilizes cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference, and survey the described macro base station user who causes interference to before the uplink interference channel of the little base station of described focus, detect the up interference triggered isomery interference coordination that is 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, greater than subscribing threshold value, triggers the isomery dynamic interference coordination.

Preferably, in an embodiment of the present invention, described acquiring unit, be further used for traveling through all macro base station information at the adjacent cell place of the little base station of described focus, from inter-base station interface receive the little base station of described focus interference coordination Physical Resource Block corresponding the macro base station user ID of interference is caused in the little base station of described focus, 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, survey the up channel state information of all macro base station users in interference source macro base station user set on the interference coordination Physical Resource Block of the little base station of described focus, macro base station user ID being subject to the macro base station scheduling in each dispatching cycle from the described interference coordination Physical Resource Block of inter-base station interface acquisition and being in corresponding described interference source macro base station user set, described macro base station user ID is put into the 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 the little base station of described focus, the traversal little base station of focus service-user, for the collaboration user set on this interference coordination Physical Resource Block, inquire about from front to back the element in described collaboration user set, macro base station user corresponding to 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, the macro base station user corresponding according to this element to the interference channel of the little base station of described focus with and all elements is corresponding before orthogonal basis vector, calculate orthogonal basis vector corresponding to described macro base station user, make it to be in the kernel of all orthogonal basis vectors of front, inquiry continues until travel through all elements in described collaboration user set, the element number of perhaps inquiring about equals the little antenna for base station number of described focus and subtracts 1, base station little of described focus service-user is to service channel and the orthogonal basis vector corresponding to all elements of inquiring about of this little base station of focus, calculate the received beam figuration vector of the little base station of described focus service-user, make it to be in the kernel of orthogonal basis vector Special composition corresponding to described all elements of inquiring about.

Preferably, in an embodiment of the present invention, described scheduling unit, be further used for the described wave beam forming vector that calculates in conjunction with on the interference coordination Physical Resource Block of the little base station of described focus, estimates that the up channel of the little base station of described focus service-user gains to carry out the frequency selectivity uplink scheduling.

Technique scheme has following beneficial effect: utilize cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference because adopt, and to survey the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause; According to described, the macro base station user profile of interference and the described macro base station user who the causes interference uplink interference channel to the little base station of described focus is caused in the little base station of described focus, construct the kernel of the described macro base station user uplink interference channel that causes interference to obtain the received beam figuration vector of the little base station of described focus service-user; Carry out the technological means of the scheduling of the little base station of described focus service-user according to described received beam figuration vector, so can suppress preferably the uplink interference of macro base station user to the little base station of focus, thereby reduced interference-to-noise ratio (the Interference over Thermal of the little base station of focus, IoT), improve upstream sinr and the throughput of the little base station of each focus service-user, and improved the residential quarter average throughput; In addition, owing to not needing the interactive user data message between macro base station and the little base station of focus, so between receiving node, the expense of interface is also lower.

Description of drawings

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

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 uplink interference coordination approach flow chart;

Fig. 3 is a kind of heterogeneous hierarchical Radio Network System of embodiment of the present invention uplink interference conditioning unit structural representation;

Fig. 4 is the another kind of heterogeneous hierarchical Radio Network System of embodiment of the present invention uplink interference conditioning unit structural representation;

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 uplink interference coordination approach flow chart of the present invention;

Fig. 7 is the refinement flow chart of application example Fig. 6 heterogeneous hierarchical Radio Network System uplink interference coordination approach of the present invention;

Fig. 8 is the organigram of application example orthogonal basis vector of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment that obtains, belong to the scope of protection of the invention.

, in order to suppress the uplink interference of MUE to the little base station of focus, can adopt Inter-Cell Interference Coordination (Inter-Cell Interference Coordination, the ICIC) technology such as time domain, frequency domain and multipoint cooperative.Multipoint cooperative (Coordinated Multi-Point, CoMP) technology is a kind of technology of utilizing base station end multi-antenna technology to avoid presence of intercell interference, interference coordination technique than time domain and frequency domain, the CoMP technology utilizes spatial character to eliminate presence of intercell interference, make different districts can use identical running time-frequency resource the transmission of data, improved the efficiency that resource is used, had a good application prospect in the heterogeneous wireless system.The CoMP technology comprises Combined Treatment (Joint Processing, JP) and cooperative scheduling/wave beam forming (Coordinated Scheduling/Beamforming, CS/CB).The JP technology is by sharing users data in a plurality of sending/receiving nodes in same cooperative cluster, can make adjacent a plurality of base stations send or receive same user's data, presence of intercell interference is become useful signal, thereby improve the reception Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio, SINR) of edge customer.Due to sharing users data between JP Technology Need cooperative base station, increased the expense of inter-base station interface and be used for the Signalling exchange that cooperates, therefore high requirement has been proposed interface capacity between base station.Comparatively speaking, the CS/CB technology does not need sharing users data between base station, and this community user is only served in each base station, by wave beam zero, falls into the interference that reduces adjacent cell in same cooperative cluster.For uplink, showing as cooperative base station passes to user's schedule information to be disturbed base station, be disturbed base station and receive vector by channel and the calculating of surveying the interference source user, interference channel is in the kernel that receives vector, thereby eliminates uplink interference.This scheme does not need interactive user data between base station, but still need base station to survey interference source user's up channel, and by information such as the transmission reference signal configuration of the interface between base station and user's scheduling, interface for Home eNodeB between receiving node is presented as gateway, is presented as X2 interface for picocell, spaced antenna.If all carrying out wave beam zero to all MUE that take same asset in place macrocell and adjacent macro cell, the little base station of the focus that is disturbed falls into, not only need these macro base stations that MUE ID and uplink reference signals configuration information are passed to the little base station of the focus that is disturbed, and for fear of the interference between MUE and Hot Spot UE uplink reference signals, these users' uplink detection reference signal need to adopt mutually orthogonal code sequence, therefore to the configuration of reference signal, also can exert an influence; Consider that in addition the little base station of focus can eliminate the adjacent cell number of users of interference, or be called wave beam zero and fall into the degree of freedom, be subject to the little base station of focus reception antenna number, and the MUE interference strength is different, therefore do not need all MUE are carried out to disturb to eliminate, only need to fall into disturbing stronger user to carry out wave beam zero.

The embodiment of the present invention provides heterogeneous hierarchical Radio Network System uplink interference coordination approach and device, to suppress the uplink interference of macro base station user to 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 uplink interference coordination approach flow chart, described method comprises:

201, utilize cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference, and survey the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause;

202, according to described, the macro base station user profile of interference and the described macro base station user who the causes interference uplink interference channel to the little base station of described focus is caused in the little base station of described focus, construct the kernel of the described macro base station user uplink interference channel that causes interference to obtain the received beam figuration vector of the little base station of described focus service-user;

203, carry out the scheduling of the little base station of described focus service-user according to described received beam figuration vector.

Preferably, in an embodiment of the present invention, describedly utilize cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference, and survey the described macro base station user who causes interference to before the uplink interference channel of the little base station of described focus, described method can also comprise: detect the up interference triggered isomery interference coordination that is subject in the little base station of described focus.Need to prove, the present invention can trigger the isomery interference coordination by detection,, to improve the throughput of the little base station of each focus 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 that is 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, greater than subscribing threshold value, triggers the isomery dynamic interference coordination.Need to prove, the present invention can be by periodically detecting, (if the interference on same Resource Block is greater than reservation threshold value) triggers isomery interference coordination when being necessary, further to improve the throughput of the little base station of each focus service-user, further improve the performance of the little base station of focus, and further improve resource utilization.

preferably, in an embodiment of the present invention, describedly utilize cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference, can comprise: all macro base station information that travel through the adjacent cell place of the little base station of described focus, from inter-base station interface receive the little base station of described focus interference coordination Physical Resource Block corresponding the macro base station user ID of interference is caused in the little base station of described focus, 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, the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause of 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, survey the up channel state information of all macro base station users in interference source macro base station user set on the interference coordination Physical Resource Block of the little base station of described focus, macro base station user ID being subject to the macro base station scheduling in each dispatching cycle from the described interference coordination Physical Resource Block of inter-base station interface acquisition and being in corresponding described interference source macro base station user set, described macro base station user ID is put into the 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 according to described macro base station user profile and the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause that the little base station of described focus is caused interference, construct the kernel of the described macro base station user uplink interference channel that causes interference to obtain the received beam figuration vector of the little base station of described focus service-user, can comprise: on the interference coordination Physical Resource Block of the little base station of described focus, the traversal little base station of focus service-user, for the collaboration user set on this interference coordination Physical Resource Block, inquire about from front to back the element in described collaboration user set, macro base station user corresponding to 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, the macro base station user corresponding according to this element to the interference channel of the little base station of described focus with and all elements is corresponding before orthogonal basis vector, calculate orthogonal basis vector corresponding to described macro base station user, make it to be in the kernel of all orthogonal basis vectors of front, inquiry continues until travel through all elements in described collaboration user set, the element number of perhaps inquiring about equals the little antenna for base station number of described focus and subtracts 1, base station little of described focus service-user is to service channel and the orthogonal basis vector corresponding to all elements of inquiring about of this little base station of focus, calculate the received beam figuration vector of the little base station of described focus service-user, make it to be in the kernel of orthogonal basis vector Special composition corresponding to described all elements of inquiring about.

Preferably, in an embodiment of the present invention, describedly according to described received beam figuration vector, carry out the scheduling of the little base station of described focus service-user, can comprise:, in conjunction with the described wave beam forming vector that calculates on the interference coordination Physical Resource Block of the little base station of described focus, estimate that the up channel of the little base station of described focus service-user gains to carry out the 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 conditioning unit structural representation, described device comprises:

Acquiring unit 1, be used for utilizing cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference, and survey the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause;

Computing unit 2, be used for the macro base station user profile and the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause that the little base station of described focus are caused interference according to described, construct the kernel of the described macro base station user uplink interference channel that causes interference to obtain the received beam figuration vector of the little base station of described focus service-user;

Scheduling unit 3, be used for carrying out the scheduling of the little base station of described focus service-user according to described received beam figuration vector.

preferably, as shown in Figure 4, for the another kind of heterogeneous hierarchical Radio Network System of embodiment of the present invention uplink interference conditioning unit structural representation, described device not only comprises above-mentioned acquiring unit 1, computing unit 2, scheduling unit 3, described device can also comprise: trigger element 4, being used for described acquiring unit 1 utilizes cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference, and survey the described macro base station user who causes interference to before the uplink interference channel of the little base station of described focus, detect the up interference triggered isomery interference coordination that is subject in the little base station of described focus.Need to prove, the present invention can trigger the isomery interference coordination by detection,, to improve the throughput of the little base station of each focus service-user, improves the performance of the little base station of focus, and improves resource utilization.

Further, described trigger element 4, 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 triggers the isomery dynamic interference coordination greater than subscribing threshold value.Need to prove, the present invention can be by periodically detecting, (if the interference on same Resource Block is greater than reservation threshold value) triggers isomery interference coordination when being necessary, further to improve the throughput of the little base station of each focus service-user, further improve the performance of the little base station of focus, and further improve resource utilization.

Preferably, described acquiring unit 1, be further used for traveling through all macro base station information at the adjacent cell place of the little base station of described focus, from inter-base station interface receive the little base station of described focus interference coordination Physical Resource Block corresponding the macro base station user ID of interference is caused in the little base station of described focus, 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, survey the up channel state information of all macro base station users in interference source macro base station user set on the interference coordination Physical Resource Block of the little base station of described focus, macro base station user ID being subject to the macro base station scheduling in each dispatching cycle from the described interference coordination Physical Resource Block of inter-base station interface acquisition and being in corresponding described interference source macro base station user set, described macro base station user ID is put into the 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 the little base station of described focus, the traversal little base station of focus service-user, for the collaboration user set on this interference coordination Physical Resource Block, inquire about from front to back the element in described collaboration user set, macro base station user corresponding to 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, the macro base station user corresponding according to this element to the interference channel of the little base station of described focus with and all elements is corresponding before orthogonal basis vector, calculate orthogonal basis vector corresponding to described macro base station user, make it to be in the kernel of all orthogonal basis vectors of front, inquiry continues until travel through all elements in described collaboration user set, the element number of perhaps inquiring about equals the little antenna for base station number of described focus and subtracts 1, base station little of described focus service-user is to service channel and the orthogonal basis vector corresponding to all elements of inquiring about of this little base station of focus, calculate the received beam figuration vector of the little base station of described focus service-user, make it to be in the kernel of orthogonal basis vector Special composition corresponding to described all elements of inquiring about.

Preferably, described scheduling unit 3, be further used for the described wave beam forming vector that calculates in conjunction with on the interference coordination Physical Resource Block of the little base station of described focus, estimates that the up channel of the little base station of described focus service-user gains to carry out the frequency selectivity uplink scheduling.

Embodiment of the present invention said method or device technique scheme have following beneficial effect: utilize cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference because adopt, and to survey the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause; According to described, the macro base station user profile of interference and the described macro base station user who the causes interference uplink interference channel to the little base station of described focus is caused in the little base station of described focus, construct the kernel of the described macro base station user uplink interference channel that causes interference to obtain the received beam figuration vector of the little base station of described focus service-user; Carry out the technological means of the scheduling of the little base station of described focus service-user according to described received beam figuration vector, so can suppress preferably the uplink interference of macro base station user to the little base station of focus, thereby reduced interference-to-noise ratio (the Interference over Thermal of the little base station of focus, IoT), improve upstream sinr and the throughput of the little base station of each focus service-user, and improved the residential quarter average throughput; In addition, owing to not needing the interactive user data message between macro base station and the little base station of focus, so between receiving node, the expense of interface is also lower.

Need to prove, the present invention can provide a kind of heterogeneous hierarchical Radio Network System uplink interference to coordinate the little base station of focus, and the little base station of described focus comprises above-mentioned heterogeneous hierarchical Radio Network System uplink interference conditioning unit, below lifts application example and describes:

Suppose that one is the abbreviation of Long Term Evolution-Advanced based on LTE-A(LTE-A, the follow-up evolution of Long Term Evolution LTE technology) heterogeneous network of system, form topological network by the Hot Spot in a plurality of macrocells and its coverage, macrocell is expressed as m=1, ..., M; A random distribution N Hot Spot in each macrocell coverage area, use isomery picocell (Pico) for example describes here for ease of describing, so total total MN isomery picocell in topological network, be expressed as n=1, ..., MN, the subscriber's meter of access macrocell is shown

User PUE in access isomery picocell is expressed as

The isomery picocell can with the 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 be with isomery picocell user frequently; , because the geographic isolation degree is higher, from other interference with isomery picocell user frequently, can ignore.

Describe below in conjunction with Fig. 6 and Fig. 7: as shown in Figure 6, be application example heterogeneous hierarchical Radio Network System uplink interference coordination approach flow chart of the present invention; As shown in Figure 7, the refinement flow chart for application example Fig. 6 heterogeneous hierarchical Radio Network System uplink interference coordination approach 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 triggers the isomery dynamic interference coordination greater than subscribing threshold value.

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 the LTE-A system, the cycle that Transmission Time Interval (TTI) is namely once dispatched, generally take 1ms as a dispatching cycle.

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

13, the isomery femto base station travels through on all available ascending resource pieces, detects uplink interference.

14, for Physical Resource Block l, whether judgement detects on this resource interference value surpasses the thresholding I that subscribes _thr, if so, perform step 141, otherwise perform step 142:

141, trigger the isomery interference coordination on current Resource Block, then turn step 15.

142, do not trigger the isomery interference coordination on current Resource Block, then turn 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 traversal little base station of described focus, from inter-base station interface receive the little base station of described focus interference coordination Physical Resource Block corresponding the macro base station user ID of interference is caused in the little base station of described focus, 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 set

Travel through all available resources, initialization cooperation set

S set _IntfCan cause to the isomery femto base station MUE of larger uplink interference while (n) being used for depositing transmitted signal; S set _CoMP(n, l) is used for depositing current dispatching cycle and is subject to the macro base station scheduling and is in S set _Intf(n) MUE in, the i.e. upper MUE that the isomery femto base station is produced actual interference of Resource Block l.The relation of two set is $\underset{l\∈L\left(n\right)}{\∪}{S}_{\mathrm{CoMP}}(n,l)\⊆S_{\mathrm{Intf}}\left(n\right).$

22, traversal triggers the Resource Block of isomery interference coordination,, for Resource Block l, from X2 interface, obtains the interference source macro base station user S set that macro base station transmits _Intf(n), in the set interference strength of each MUE with and the uplink reference signals configuration adopted.Consider in the LTE-A system, user's uplink transmission power compensates according to the path loss that down-run survey obtains, for be in the macrocell edge and with the nearer MUE in isomery picocell geographical position, has on the one hand larger transmitting power, lower to the power attenuation that is disturbed the isomery femto base station on the other hand, thus the isomery femto base station is caused larger uplink interference; Therefore in the present embodiment, utilize MUE to macro base station with to the path-loss difference value representation interference strength between the isomery femto base station, the larger interference strength of difference is larger.In this step, macro base station can be with path-loss difference value in this residential quarter greater than predetermined path-loss difference value thresholding PL _thr(n) MUE puts into S set _Intf(n) in, and by X2 interface with S set _Intf(n) pass to the isomery femto base station.For any macro base station m, obtaining of path-loss difference value can be implemented as:

The MUE of traversal access, for any MUE

Calculate isomery femto base station n and to the path loss (dB value) of serving BS m, computational methods are expressed as respectively at first respectively

${\mathrm{PL}}_n^{k_m^M}=P_t\left(n\right)-{\mathrm{RSRP}}_{k_m^M}^n$

${\mathrm{PL}}_m^{k_m^M}=P_t\left(m\right)-{\mathrm{RSRP}}_{k_m^M}^m---\left(1\right)$

P wherein _t(m) the reference signal transmitting power of expression serving BS m, P _t(n) the downlink reference signal transmitting power of expression isomery femto base station n, both indicate to the MUE that accesses this residential quarter, P by the downlink broadcast of macro base station _t(n) can pass to macro base station by X2 interface by isomery femto base station n.

MUE

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

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

MUE

Judgement

Whether greater than thresholding PL _thr(n),, if greater than this thresholding, to serving BS m, report the interference of isomery femto base station n indication, and report simultaneously corresponding

PL _thr(n) be a specific threshold value of isomery picocell, can pass to macro base station by X2 interface by isomery femto base station n.Do not consider the impact of multipath fading, when

To the path-loss difference value of service macro base station m and isomery femto base station n during greater than 0dB, Interference signal at the received power at the isomery femto base station n place target received power greater than isomery picocell n service-user, thereby cause larger interference, therefore can be with path-loss difference value thresholding PL _thr(n) default value is set to 0dB, the uplink interference that makes the isomery femto base station avoid the multilayer coverage property due to heterogeneous network to bring.

30, uplink reference signals configuration information according to macro base station user in described interference source macro base station user set, survey the up channel state information of all macro base station users in interference source macro base station user set on the interference coordination Physical Resource Block of the little base station of described focus, macro base station user ID being subject to the macro base station scheduling in each dispatching cycle from the described interference coordination Physical Resource Block of inter-base station interface acquisition and being in corresponding described interference source macro base station user set, described macro base station user ID is put into the 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 surveys S set according to reference signal configuration on the Resource Block l that triggers the isomery interference coordination _Intf(n) up channel of MUE in. in the LTE-A system, the isomery femto base station can obtain by the uplink reference signals SRS that surveys MUE these users' uplink interference channel, because SRS is periodic transmission, the isomery picocell needs the regular hour to do channel detection, therefore macro base station is informed the isomery femto base station with potential interference source in advance, is convenient to isomery femto base station n at S _Intf(n) utilizing detected interference channel to do wave beam zero after the MUE in is dispatched falls into.

32, isomery femto base station n receives by X2 interface the MUEID that the upper macro base station m of interference coordination Physical Resource Block l transmits, and puts it into the collaboration user S set _CoMPIn (n, l), and according to

Sequence from big to small.In this step, the isomery femto base station need to receive the cooperative information that the cooperation macro base station transmits, and the content that the cooperation macro base station is carried out comprises:

A. macro base station is independently dispatched MUE.Because uplink interference in heterogeneous system is mainly that MUE brings the isomery femto base station, and PUE is lower to the interference of macro base station, so user's scheduling process of macro base station can independently carry out, and does not need the cooperation of isomery femto base station.

B. macro base station will be dispatched on interference coordination Physical Resource Block l in this residential quarter and is in S set _Intf(n) the MUE ID in passes to isomery femto base station n by X2 interface; Macro base station, by with in current dispatching cycle, the isomery femto base station being produced more strongly disturbing MUE, passing to the isomery femto base station, makes the isomery picocell carry out wave beam zero for these strong interferers user and falls into, and reaches and suppresses the purpose of disturbing.

The isomery picocell of considering the different antennae configuration has the sunken ability of different wave beam zero, if S set _CoMPIn (n, l), the interference source number is too much, and can carry out to the strongest a part of interference source wave beam zero and fall into, so pair set S _CoMP(n, l) sorts from big to small according to interference strength.

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

With S set _CoMPIn (n, l), MUE(corresponding to first element i=1 is expressed as k (1)) the uplink interference channel (is expressed as

) be set to the first orthogonal dimension base vector, namely

With element sequence number i+1, namely from S set _CoMPSecond element in (n, l) inquired about backward, execution step (42).

42,, for i element, utilize MUE interference channel corresponding to this element And element j=1 ..., the orthogonal basis vector that i-1 is corresponding

Calculate orthogonal basis vector corresponding to element i, make it to be in

Kernel in.Concrete formula table is shown

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

Wherein || || the mould of expression vector.By this formula as can be known, i orthogonal dimension base vector and j=1 ..., i-1 orthogonal dimension base vector quadrature, therefore be in S set _CoMP(n, l) j=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 basis vector 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 that inquires about reaches S set _CoMPThe element number of (n, l) (be expressed as | S _CoMP(n, l) |), perhaps reach N _t(n)-1.If meet both one of, the execution step (44), otherwise with i+1 and the execution step (42).Number of antennas is N _t(n) isomery femto base station can with the space resources dimension be N _t(n), therefore can eliminate from N at most _t(n)-1 user's presence of intercell interference.If N _t(n)-1 〉=| S _CoMP(n, l) |, the 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 be served the PUE of this residential quarter; If N _t(n)-1＜| S _CoMP(n, l) |, isomery femto base station pair set | S _CoMP(n, l) | front N _t(n)-1, namely disturb the strongest N _t(n)-1 MUE carries out wave beam zero to fall into, and the space resources dimension that is used for this residential quarter useful signal is 1.

44, for access user The isomery femto base station is according to its service channel

With all elements j=1 that inquired about in set ..., the orthogonal basis vector of i

Calculate

Corresponding orthogonal basis vector

Make it to be in

Kernel in.Concrete formula table is shown

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

Right

Normalization obtains isomery picocell user

The 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

J=1 ..., in the kernel in the space that i forms, namely

In the wave beam zero that application example of the present invention proposes falls into scheme, by construction set S _CoMPIn (n, l), the kernel of MUE interference channel, as isomery picocell service user's received beam figuration vector, can be eliminated from S under the desirable condition of uplink channel information _CoMPIn (n, l), the uplink interference of MUE, also can play inhibitory action to uplink interference under the non-ideal communication channel information condition.

Suppose that isomery femto base station n carries out the sunken MUE set of wave beam zero and is S _IC(n, l), this is gathered by S set _CoMPThe front max of (n, l) (| S _CoMP(n, l) |, N _t(n)-1) individual element forms, isomery picocell user k _nUp input---output expression formula be:

$y_{k_n^P,l}={\left(w_{k_n^P,l}\right)}^H{h}_{n,l}^{k_n^P}{x}_{k_n^P,l}+\underset{p\∈S_{\mathrm{IC}}(n,l)}{\mathrm{\Σ}}{\left(w_{k_n^P,l}\right)}^H{h}_{n,l}^p{x}_{p,l}+\underset{q\∉S_{\mathrm{IC}}(n,l)}{\mathrm{\Σ}}{\left(w_{k_n,l}\right)}^H{h}_{n,l}^q{x}_{q,l}+{\left(w_{k_n^P,l}\right)}^{H}n$

$={\left(w_{k_n^P,l}\right)}^H{h}_{n,l}^{k_n^P}{x}_{k_n^P,l}+\underset{q\∉S_{\mathrm{IC}}(n,l)}{\mathrm{\Σ}}{\left(w_{k_n^P,l}\right)}^H{h}_{n,l}^q{x}_{q,l}+{\left(w_{k_n^P,l}\right)}^{H}n---\left(6\right)$

Presence of intercell interference wherein

Come from isomery femto base station n and be not the MUE that wave beam zero falls into, or the user of the isomery picocell of other identical networkings.

50,, in conjunction with the described wave beam forming vector that calculates on the interference coordination Physical Resource Block of the little base station of described focus, estimate that the up channel of the little base station of described focus service-user gains to carry out the frequency selectivity uplink scheduling.

Specifically comprise the steps:

51, isomery femto base station n user upper according to interference coordination Physical Resource Block l

Received beam figuration vector, in conjunction with the uplink scheduling of received beam figuration vector completing user.For any user

The isomery femto base station utilizes uplink reference signals to survey and obtains channel

With the received beam figuration vector that obtains in step 4

Calculate this user's received signal power

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

Interference power (linear value) is expressed as

$I_n=\mathrm{IoT}\left(n\right)\·{\mathrm{\σ}}_n^2---\left(8\right)$

Wherein the interference-to-noise ratio of IoT (n) expression isomery picocell n, also namely disturb the lifting coefficient,

The expression noise power.Isomery picocell user

The SINR estimated value be expressed as

${\mathrm{SINR}}_{k_n^P,l}=\frac{P_r(k_n^P,l)}{I_n+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="n"\; filenames="HDA00001630748500031.png,HDA00001630748500041.png"\; state="\{\{state\}\}">n</figure-callout>}}^2}=\frac{{\left|{\left(w_{k_n^P,l}\right)}^H{h}_{n,l}^{k_n^P}\right|}^2}{(1+\mathrm{IoT}\left(n\right)){\mathrm{\&sigma;}}_n^2}---\left(9\right)$

Obtain up modulation coding mode (MCS) according to the SINR of estimation, and calculate up momentary rate Isomery femto base station n carries out 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

Take proportional fair scheduling as example,

Wherein

The expression user

Average throughput in a time window.

After this step is carried out end,, with TTI+1, again turn step 12 and enter the next judgement of carrying out the uplink interference coordination dispatching cycle.

The above-mentioned application example of the present invention provides a kind of heterogeneous hierarchical Radio Network System uplink interference coordination approach that is applied to, can suppress preferably the uplink interference of MUE to the little base station of focus, thereby reduced the interference-to-noise ratio IoT of the little base station of focus, improve each focus user's upstream sinr and throughput, and improved the residential quarter average throughput; In addition, owing to not needing the interactive user data message between macro base station and the little base station of focus, so between receiving node, the expense of interface is also lower.

Those skilled in the art can also recognize the various illustrative components, blocks (illustrative logical block) 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 clear replaceability (interchangeability) of showing hardware and software, above-mentioned various illustrative components (illustrative components), unit and step have been described their function generally.Such function is to realize depending on the designing requirement of specific application and whole system by hardware or software.Those skilled in the art can be for every kind of specific application, and can make ins all sorts of ways realizes described function, but this realization should not be understood to exceed the scope of 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 realize by the combination of calculation element, for example digital signal processor and microprocessor, multi-microprocessor, Digital Signal Processor Core of one or more microprocessors associating, or any other similarly configuration realize.

Method described in the embodiment of the present invention or the step of algorithm can directly embed hardware, the software module of processor execution or the two combination.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 so that processor can be from storage medium reading information, and can deposit write information 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 different parts in user terminal.

In one or more exemplary designs, the described above-mentioned functions of the embodiment of the present invention can realize in hardware, software, firmware or this three's combination in any.If realize in software, these functions can be stored on medium with computer-readable, or with one or more instructions or code form, are transmitted on the medium of computer-readable.The computer-readable medium comprises the computer storage medium and is convenient to make allows computer program transfer to other local communication medium from a place.Storage medium can be the useable medium that any general or special computer can access.For example, 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 can be used for carrying or storage and can be read by general or special computer or general or special processor the medium of the program code of form with instruction or data structure and other.In addition, any connection can suitably be defined as the computer-readable medium, for example, if software is by a coaxial cable, optical fiber computer, twisted-pair feeder, Digital Subscriber Line (DSL) or also being comprised in defined computer-readable medium with wireless way for transmittings such as infrared, wireless and microwave 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 the magnetic duplication data, and video disc carries out the optical reproduction data with laser usually.Above-mentioned combination also can be included in the computer-readable medium.

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

Claims (8)

1. a heterogeneous hierarchical Radio Network System uplink interference coordination approach, is characterized in that, described method comprises:

Utilize cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference, and survey the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause;

According to described, the macro base station user profile of interference and the described macro base station user who the causes interference uplink interference channel to the little base station of described focus is caused in the little base station of described focus, construct the kernel of the described macro base station user uplink interference channel that causes interference to obtain the received beam figuration vector of the little base station of described focus service-user;

Carry out the scheduling of the little base station of described focus service-user according to described received beam figuration vector.

2. method as claimed in claim 1, it is characterized in that, describedly utilize cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference, and survey the described macro base station user who causes interference to before the uplink interference channel of the little base station of described focus, described method also comprises:

Detect the up interference triggered isomery interference coordination that is subject in the little base station of described focus; The up interference triggered isomery interference coordination that is 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, greater than subscribing threshold value, triggers the isomery dynamic interference coordination.

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

Describedly utilize cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference, comprise: all macro base station information that travel through the adjacent cell place of the little base station of described focus, from inter-base station interface receive the little base station of described focus interference coordination Physical Resource Block corresponding the macro base station user ID of interference is caused in the little base station of described focus, 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;

the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause of 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, survey the up channel state information of all macro base station users in interference source macro base station user set on the interference coordination Physical Resource Block of the little base station of described focus, macro base station user ID being subject to the macro base station scheduling in each dispatching cycle from the described interference coordination Physical Resource Block of inter-base station interface acquisition and being in corresponding described interference source macro base station user set, described macro base station user ID is put into the 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, described according to described macro base station user profile and the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause that the little base station of described focus is caused interference, construct the kernel of the described macro base station user uplink interference channel that causes interference to obtain the received beam figuration vector of the little base station of described focus service-user, comprising:

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

Base station little of described focus service-user is to service channel and the orthogonal basis vector corresponding to all elements of inquiring about of this little base station of focus, calculate the received beam figuration vector of the little base station of described focus service-user, make it to be in the kernel of orthogonal basis vector Special composition corresponding to described all elements of inquiring about;

Describedly according to described received beam figuration vector, carry out the scheduling of the little base station of described focus service-user, comprising:

, in conjunction with the described wave beam forming vector that calculates on the interference coordination Physical Resource Block of the little base station of described focus, estimate that the up channel of the little base station of described focus service-user gains to carry out the frequency selectivity uplink scheduling.

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

Acquiring unit, be used for utilizing cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference, and survey the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause;

Computing unit, be used for the macro base station user profile and the described uplink interference channel of the macro base station user of interference to the little base station of described focus that cause that the little base station of described focus are caused interference according to described, construct the kernel of the described macro base station user uplink interference channel that causes interference to obtain the received beam figuration vector of the little base station of described focus service-user;

Scheduling unit, be used for carrying out the scheduling of the little base station of described focus service-user according to described received beam figuration vector.

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

Trigger element, being used for described acquiring unit utilizes cooperating between the little base station of focus and macro base station to obtain the macro base station user profile that the little base station of described focus is caused interference, and survey the described macro base station user who causes interference to before the uplink interference channel of the little base station of described focus, detect the up interference triggered isomery interference coordination that is subject in the little base station of described focus; 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 triggers the isomery dynamic interference coordination greater than subscribing threshold value.

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

Described acquiring unit, be further used for traveling through all macro base station information at the adjacent cell place of the little base station of described focus, from inter-base station interface receive the little base station of described focus interference coordination Physical Resource Block corresponding the macro base station user ID of interference is caused in the little base station of described focus, 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, survey the up channel state information of all macro base station users in interference source macro base station user set on the interference coordination Physical Resource Block of the little base station of described focus, macro base station user ID being subject to the macro base station scheduling in each dispatching cycle from the described interference coordination Physical Resource Block of inter-base station interface acquisition and being in corresponding described interference source macro base station user set, described macro base station user ID is put into the collaboration user set, and element is wherein sorted from big to small according to described uplink interference intensity.

8. install as claimed in claim 7, it is characterized in that,

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

Described scheduling unit, be further used for the described wave beam forming vector that calculates in conjunction with on the interference coordination Physical Resource Block of the little base station of described focus, estimates that the up channel of the little base station of described focus service-user gains to carry out the frequency selectivity uplink scheduling.

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