CN102104945B - Space division determination method and equipment - Google Patents
Space division determination method and equipment Download PDFInfo
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- CN102104945B CN102104945B CN200910243813.2A CN200910243813A CN102104945B CN 102104945 B CN102104945 B CN 102104945B CN 200910243813 A CN200910243813 A CN 200910243813A CN 102104945 B CN102104945 B CN 102104945B
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Abstract
The embodiment of the invention discloses a space division determination method and space division determination equipment. The space division determination method comprises the following steps of: acquiring the measurement results of different terminals; determining whether the related terminals accord with the first space division determination condition according to the measurement results; acquiring the related power difference of the terminals in accordance with the first space division determination condition; determining whether the related terminals accord with the second space division determination condition according to the related power difference; and performing space division scheduling for the terminals in accordance with the second space division determination condition. By the invention, the judgment conditions for space division of the terminals are optimized, so that the strong interference of large signal with small signal between the terminals subjected to space division is avoided and the accuracy of space division is improved.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of empty point determination methods and equipment.
Background technology
Along with the development of Mobile Communication Industry, in order to meet the user's request day by day increasing, need to improve the capacity of system.For TD-SCDMA (Time Division-Synchronous Code DivisionMultiple Access, TD SDMA), in order to make full use of the multi-antenna technology of TD-SCDMA system, utilize spatial character to distinguish the signal of different terminals, introduce SDMA (Space DivisionMultiple Access, space division multiplexing access).A kind of form of SDMA using spatial character as resource division, utilize the directivity of antenna that space is cut apart and formed different channels, make the terminal that is positioned at different directions or distinct coverage region use identical carrier wave, time slot and code channel resource, expand the resource pool of community, thus capacity.
At present, whether can carry out the empty judgement dividing for terminal is the judgement that divides isolation based on sky.Divide for Interior Space, whether base station meets in the difference of the RSCP of the different passages of the spatial channel allocation (ReceivedSignal Code Power, received signal code power) not the passage ownership that default sky divides isolation thresholding to judge terminal according to terminal.Wherein, each terminal may belong to a not only passage, and the passage that its received power is the strongest is called as " the first ownership passage ".Base station judgement ownership passage does not have overlapping terminal can carry out sky point.Or can whether the difference of base station RSCP on same passage according to different terminals meets default sky be divided the judgement of isolation thresholding emptyly to divide, if the difference of two terminals RSCP measuring on passage under terminal 1 is greater than certain default sky and divides isolation thresholding, and the difference of the RSCP recording on passage is also greater than certain default sky and divides isolation thresholding, judge that two terminals can carry out sky and divide under terminal 2.Divide for outdoor sky, choose one or more in comparing etc. of received power before the differential seat angle, channel relevancy, joint inspection of different terminals and divide isolation as sky.For example: for differential seat angle, according to the channel estimation results of the not the spatial channel allocation of different terminals in scheduling queue, calculate respectively the angle information of each terminal, and then calculate the differential seat angle of terminal room between two.Be greater than for differential seat angle the terminal that default sky divides isolation thresholding, judge that it can carry out sky point.
Realizing in process of the present invention, inventor finds prior art, and at least there are the following problems:
Divide Rule of judgment for Interior Space, only considered the difference power of same terminal at different passages, or only consider the difference power of different terminals at same passage; Or to follow DPCH (Dedicated PhysicalChannel, DPCH) to replace and treated the difference power of the spatial channel allocation at same passage at the difference power of same passage, and only have be between the two only under special circumstances of equal value.Like this, treat that the power difference between the spatial channel allocation can affect empty point effect.For example: if by following the power measurement result of DPCH to think that two terminals belong to different passages, and can carry out sky point, and actual carry out empty point be the channel of other type, as E-PUCH (E-DCH Physical Uplink Channel, E-DCH physical uplink channel) channel, actual capabilities occur that the E-PUCH channel emission power of terminal 1 is less, the E-PUCH channel emission power of terminal 2 is larger, if terminal 1 belongs to passage 1, terminal 2 belongs to passage 2, although the power that terminal 2 arrives passage 1 is like this much smaller than the power that arrives passage 2, the power that still likely arrives passage 1 with terminal 1 is in same magnitude, thereby cause larger sky to divide interference to terminal 1.
Dividing Rule of judgment for outdoor sky, is generally that the poor or channel relevancy of use angle judges empty point, if meet differential seat angle requirement or channel relevancy requirement just thinks that can carry out sky divides, and does not consider that terminal is poor at the related power for the treatment of the spatial channel allocation yet.For example: the sky for the down channel that has power control divides, if a terminal is closer from base station, another terminal is distant from base station, and their transmitting power just has larger difference in base station side so.If both are carried out to sky point, because the former transmitting power is compared with large many of the latter, may be to from base station, the terminal close to causes very large sky to divide interference from the distant terminal in base station.Sky for up E-PUCH channel divides, if the normalization code check difference of two terminals is very large, expectation received power is also very large with regard to difference, if both carry out sky point, the terminal that code check is large can cause larger interference to the little terminal of code check.
Summary of the invention
Embodiments of the invention provide the empty point determination methods of one and equipment, for can the Rule of judgment that carry out empty point between terminal be optimized, avoid carrying out large-signal strong jamming small-signal between empty terminal of dividing, and improve the accuracy of empty point of judgement.
Embodiments of the invention provide a kind of empty point determination methods, comprising:
Obtain the measurement result of different terminals; Judge that according to described measurement result between associated terminal, whether meeting the first sky divides Rule of judgment;
The related power that obtains the terminal that meets described first empty point of Rule of judgment is poor; Judge that according to described related power is poor between associated terminal, whether meeting the second sky divides Rule of judgment;
The terminal that meets described second empty point of Rule of judgment is carried out to dispatching space division.
Embodiments of the invention provide a kind of network equipment, comprising:
Acquisition module, for obtaining the measurement result of different terminals; The related power that is used for obtaining the terminal that meets described the first sky point Rule of judgment is poor;
The first judge module, judges that for the described measurement result of obtaining according to described acquisition module between associated terminal, whether meeting the first sky divides Rule of judgment;
The second judge module, for meet the terminal of described first empty point of Rule of judgment for described the first judge module judgement, the described related power that obtains according to described acquisition module is poor judges between associated terminal, whether to meet second empty point of Rule of judgment;
Scheduler module, carries out dispatching space division for the terminal that described the second judge module judgement is met to described second empty point of Rule of judgment.
Embodiments of the invention have the following advantages: the embodiment of the present invention carries out dividing judgement based on the sky of first empty point of Rule of judgment (empty point isolation) in the measurement result of the spatial channel allocation not according to terminal, and to the terminal of dividing Rule of judgment by the first sky, the poor sky that carries out second empty point of Rule of judgment of related power for the treatment of the spatial channel allocation according to it divides judgement (related power is poor), thereby can the Rule of judgment that carry out empty point between terminal be optimized, avoid carrying out large-signal strong jamming small-signal between empty terminal of dividing, improve the accuracy of empty point of judgement.
Accompanying drawing explanation
In order to be illustrated more clearly in the present invention or technical scheme of the prior art, to the accompanying drawing of required use in the present invention or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the flow chart of a kind of sky point determination methods in embodiments of the invention;
Fig. 2 is the flow chart of a kind of sky point determination methods in embodiments of the invention;
Fig. 3 is the path loss schematic diagram of two terminals that adhere to two passages separately in embodiments of the invention;
Fig. 4 is the structural representation of a kind of network equipment in embodiments of the invention;
Fig. 5 is the structural representation of a kind of network equipment in embodiments of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is carried out to clear, complete description, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belongs to the scope of protection of the invention.
As stated in the Background Art, in prior art base station according to terminal the measurement result of the spatial channel allocation (following often DPCH) and default sky do not divide isolation to compare, divide isolation to judge the separation case of different terminals channel by sky: in the time that measurement result meets default sky and divides isolation, to judge between terminal and can carry out sky point; Otherwise, judge between terminal and cannot carry out sky point.Divide the judgement of isolation to guarantee to carry out the isolated instances between empty terminal of dividing by sky, and now, owing to there is no to consider that poor generation of related power for the treatment of vacant channels judges inaccurate situation empty dividing.
For solving the problems of the technologies described above, the embodiment of the present invention has proposed, on the basis of first empty point of Rule of judgment of dividing isolation based on sky, to carry out the judgement of second empty point of Rule of judgment.Wherein, second empty point of Rule of judgment is to judge for the difference power for the treatment of the spatial channel allocation, treating that by different terminals the difference power of the spatial channel allocation and a default sky point power threshold compare, thereby avoid large-signal strong jamming small-signal, to judging that can carry out sky point between terminal be optimized, and improves the accuracy of empty point of judgement.
As shown in Figure 1, be the empty point determination methods of one that embodiments of the invention provide, specifically comprise the following steps:
Below take network equipment as base station as example describes, but be not limited to this, every can be to terminal based on first empty point of Rule of judgment, the network equipment that carries out second empty point of Rule of judgment judgement all belongs to protection scope of the present invention.
As shown in Figure 2, be the empty point determination methods of one that embodiments of the invention provide, specifically comprise the following steps:
Simple in order to narrate, describe for example take two terminals empty point (being that double sky divides), emptyly divide tuple to be greater than 2 situation can naturally to promote and obtain, also belong to protection scope of the present invention.
Wherein, measurement result divides isolation relevant to default sky.Divide isolation according to different skies, obtain different measurement results.
Wherein, whether in the not measurement result of the spatial channel allocation meet default sky divide isolation condition if being different terminals for first empty point of Rule of judgment.
Particularly, base station judges that according to the measurement result of different terminals between associated terminal, whether meeting first empty point of Rule of judgment comprises the following steps:
1, choose empty point isolation.
Preferably, the corresponding different sky of different application scenarioss divides isolation, particularly, because indoor covering is generally that subchannel covers, be that each passage covers one or more floors, outdoor is that multichannel smart antenna covers, preferably, divide for Interior Space, the RSCP that chooses different terminals divides isolation as sky; Divide for outdoor sky, choose one or more in comparing etc. of received power before the differential seat angle, channel relevancy, joint inspection of different terminals and divide isolation as sky.
2, the sky that different empty point isolations is set divides isolation thresholding.
3, in scheduling queue, obtain the isolation information between different terminals according to the measurement result of different terminals.
4, divide isolation thresholding to judge according to the isolation information between different terminals and default sky and between associated terminal, whether meet first empty point of Rule of judgment.
Particularly, divide isolation thresholding to judge whether to meet between associated terminal first empty point of Rule of judgment to comprise any in following two kinds of situations according to the isolation information between different terminals and default sky:
In the time that the isolation between different terminals meets default sky and divides isolation thresholding, judge while meeting first empty point of Rule of judgment between associated terminal, forward step 203 to;
In the time that the isolation between different terminals does not meet default sky and divides isolation thresholding, judge between associated terminal and do not meet first empty point of Rule of judgment, associated terminal is not carried out to sky and divide.
For example: divide for Interior Space, judge the passage ownership of terminal in the difference of the RSCP of the different passages of the spatial channel allocation not according to terminal, wherein, each terminal may belong to a not only passage, and the passage that its received power is the strongest is called as " the first ownership passage ".Ownership passage does not have overlapping terminal to meet first empty point of Rule of judgment, the judgement that enters second empty point of Rule of judgment.Or can the difference of the RSCP according to different terminals on same passage judge and emptyly divide, if the difference of two terminals RSCP measuring on passage under terminal 1 is greater than certain default sky and divides isolation thresholding, and the difference of the RSCP recording on passage is also greater than certain default sky and divides isolation thresholding, judge that two terminals can carry out sky and divide under terminal 2.
Divide for outdoor sky, selected angle is poor as empty point isolation.Then according to the channel estimation results of the not the spatial channel allocation of different terminals in scheduling queue, calculate respectively the angle information of each terminal, and then calculate the differential seat angle of terminal room between two.Be greater than the terminal of certain thresholding for differential seat angle, judge that it meets second empty point of Rule of judgment, the judgement that enters second empty point of Rule of judgment.
Above-mentioned similar principles can be generalized to other parameters the divide isolation situation as sky of choosing.
It is poor that step 203, base station obtain the related power of the terminal that meets first empty point of Rule of judgment.
For the terminal that meets first empty point of Rule of judgment, it is carried out to the judgement of second empty point of Rule of judgment, i.e. judgement is treated that the related power of the spatial channel allocation is poor and whether is met default sky point power threshold.When judging that different terminals, in the time that poor satisfied second sky of related power of the spatial channel allocation divides Rule of judgment, forwards step 205 to; Otherwise, associated terminal is not carried out to sky point.
For up channel and down channel, indoor and outdoors, the power difference that each concrete condition is corresponding, thus be described for up channel and two kinds of situations of down channel respectively below, and every kind of situation is divided into two kinds of scenes of indoor and outdoors.In addition, the performance number using in following all descriptions is all dB value, is not linear value.
For simplicity, below in illustrating all to judge that whether can carry out sky between two terminals is divided into example and describes, and only consider the first ownership passage of each terminal, wherein first of terminal 1,2 the ownership passage is respectively passage 1, passage 2.But point determination methods of the sky in the embodiment of the present invention is applicable to too multiple terminals and considers the situation of all ownership passages of each terminal, also belongs to protection scope of the present invention,
1, divide for the sky of up channel
1.1) sky of indoor up channel divides
Now, related power is poor treats the spatial channel allocation expectation received power for base station side associated terminal on the ownership passage of each terminal.Second empty point of Rule of judgment is: on the ownership passage of each terminal, this terminal and other-end on this passage until the spatial channel allocation expectation received power is poor while being greater than default sky point power threshold, judge that associated terminal can carry out sky and divide.
For example: for terminal 1,2, satisfy condition a) and b) time simultaneously, judge that terminal 1,2 can carry out sky point:
A) the empty point power threshold 1 of prx1_u1-prx1_u2 >;
B) the empty point power threshold 2 of prx2_u2-prx2_u1 >.
Wherein, what prx1_u1 and prx1_u2 were respectively on base station side passage 1 terminal 1,2 treats the spatial channel allocation expectation received power, and prx2_u1 and prx2_u2 are respectively the expectation received power of terminal 1,2 on passage 2.
Preferably, empty point power threshold 1 and an empty point power threshold 2 can be identical, also can be different.If treat that the spatial channel allocation is two kinds of different types of channels, different thresholdings is set so, can guaranteed qos require the sky point quality of high channel.The value of thresholding can obtain by emulation, then revises by actual field testing result.
1.2) sky of outdoor up channel divides
Now, related power is poor is base station side, total expectation useful signal received power for the treatment of the spatial channel allocation of each terminal and other-end treat the poor of the total expectation interference signal received power of the spatial channel allocation to this terminal.Second empty point of Rule of judgment is: when the difference of the total expectation interference signal received power to this terminal until the spatial channel allocation of the total expectation useful signal received power until the spatial channel allocation of each terminal and other-end is greater than default sky point power threshold, judge that associated terminal can carry out sky and divide.
For example: in the time that terminal 1,2 meets above a) and b) two conditions, judge that terminal 1,2 can carry out sky point simultaneously, divide otherwise can not carry out sky.Just the variable implication difference in condition: prx1_u1 is total expectation useful signal received power for the treatment of the spatial channel allocation of the terminal 1 received of base station side, prx1_u2 is the total expectation interference signal received power for the treatment of the spatial channel allocation of the terminal 2 received of base station side to terminal 1, prx2_u2 is total expectation useful signal received power for the treatment of the spatial channel allocation of the terminal 2 received of base station side, and prx2_u1 is the total expectation interference signal received power for the treatment of the spatial channel allocation of the terminal 1 received of base station side to terminal 2.
Preferably, empty point power threshold 1 and an empty point power threshold 2 can be identical, also can be different.If treat that the spatial channel allocation is two kinds of different types of channels, different thresholdings is set so, can guaranteed qos require the sky point quality of high channel.The value of thresholding can obtain by emulation, then revises by actual field testing result.
2, divide for the sky of down channel
Now, related power is poor expects the useful signal for the treatment of the spatial channel allocation and the interference channel that receive for end side.Second empty point of Rule of judgment is: each terminal receive in local terminal expection in the time that the useful signal of the spatial channel allocation and the difference of interference signal are greater than default sky point power threshold, judge that associated terminal can carry out sky and divide.
For example: for terminal 1,2, satisfy condition c) simultaneously, can carry out sky point d) time, divide otherwise can not carry out sky:
C) the empty point power threshold 3 of prxUE1_u1-prxUE1_u2 >;
D) the empty point power threshold 4 of prxUE2_u2-prxUE2_u1 >.
Wherein prxUE1_u1, prxUE2_u2 are respectively and expect in UE1, UE2 side that the useful signal for the treatment of the spatial channel allocation receiving, prxUE1_u2, prxUE2_u1 are respectively in UE1, UE2 side and expect the sky of the treating the spatial channel allocation point interference signal receiving.
Wherein, divide for Interior Space, if the sky of up channel divides, only on the ownership passage of each terminal, carry out the reception of this terminal data; If the sky of down channel divides, only on the ownership passage of each terminal, carry out the transmission of this terminal data.
Power adjustment is carried out in step 206, base station.
Particularly, the related power for the treatment of the spatial channel allocation that base station is adjusted up channel by adjustment to the power mandate of terminal is poor; And/or the related power for the treatment of the spatial channel allocation of the transmitted power of terminal being adjusted to down channel by adjustment is poor.
In foregoing description, for uplink and downlink channel, indoor and outdoors, all set forth empty point of Rule of judgment of second under different situations, wherein whether second empty point of Rule of judgment to be all that related power is poor meet default sky point power threshold.The concrete application scenarios of following ECDC, to the related power in each situation, further detailed elaboration (being poor circular and the process of related power in step 204) is carried out in poor calculating.
3, divide for the sky of up channel
3.1) sky of indoor up channel divides
Wherein, passage 1 receives UE1, and to follow DPCH power be prx1_u1_dpch, and passage 2 receives UE1, and to follow DPCH power be prx2_u1_dpch; Passage 1 receives UE2, and to follow DPCH power be prx1_u2_dpch, and passage 2 receives UE2, and to follow DPCH power be prx2_u2_dpch.These variablees are all known.
3.1.1) if treat that the spatial channel allocation is same channel, and be HSUPA (High Speed UplinkPacket Access, High Speed Uplink Packet access) Traffic Channel (E-PUCH):
prx1_u1-prx1_u2
＝(prx1_u1_dpch+ΔP1)-(prx1_u2_dpch+ΔP2)
＝(ΔP1-ΔP2)+(prx1_u1_dpch-prx1_u2_dpch)。
Wherein, Δ P1 be the E-PUCH power of terminal 1 with respect to the power bias of following DPCH, determined by both code check, modulation systems, the difference of target BLER (Block Error Ratio, bLock error rate); Δ P2 is the E-PUCH power of terminal 2 is followed DPCH power bias with respect to terminal 2.
(ΔP1-ΔP2)
＝(β
0，e，epuch1-(β
0，e，dpch1+Δ
BLER_DPCH))-(β
0，e，epuch2-(β
0，e，dpch2+Δ
BLER_DPCH))
＝(β
0，e，epuch1-β
0，e，epuch2)-(β
0，e，dpch1-β
0，e，dpch2)
＝((β
0，e，epuch1+Δ
harq)-(β
0，e，epuch2+Δ
harq))
≈PRRI1-PRRI2。
Wherein, β
0, e, epuchfor code check and β corresponding to modulation system of EPUCH
0, evalue (can be joined code check and Between Signal To Noise Ratio table ((λ, the β that the HSUPA business of getting off is used by looking into network side
0, e) relation table) obtain); β
0, e, dpchfor following code check and β corresponding to modulation system of DPCH
0, evalue (can be joined code check and Between Signal To Noise Ratio table ((λ, the β that the HSUPA business of getting off is used by looking into network side
0, e) relation table) obtain); Δ
bLER_DPCHfor the correction of following the target BLER of DPCH needs different from the target BLER of E-PUCH to carry out, because (λ, β
0, e) corresponding relation in the relation table corresponding relation while being BLER=10%; Δ
harqthe maximum of corresponding power bias in MAC-d stream for current use HSUPA resource transmission; PRRI (Power Resource Related Information, power resource relevant information) be the power mandate of base station to terminal, on E-AGCH (E-DCH Absolute Grant Channel, E-DCH absolute grant channel), carry to terminal.The up of above formula hypothesis terminal 1,2 follows DPCH configuration identical, so there is β
0, e, dpch1=β
0, e, dpch2; In addition, because β
0, e+ Δ h
arq≤ PRRI, so obtain above formula conclusion.(above-mentioned parameter concrete meaning can be referring to 3gpp 25.224 agreements.)
Thus, can obtain following approximation relation:
a1)prx1_u1-prx1_u2≈prx1_u1_dpch-prx1_u2_dpch+(PRRI1-PRRI2)；
b1)prx2_u2-prx2_u1≈prx2_u2_dpch-prx2_u1_dpch-(PRRI1-PRRI2)。
By equation a1), b1) bring formula into a), b), can carry out the judgement of empty point of Rule of judgment.
3.1.2) if treat that the spatial channel allocation is same channel, and code check is fixed (such as HSPA (High-Speed Packet Access, high-speed packet access) control channel or R4 channel), and because there is power control, ideally have following approximation relation:
a2)prx1_u1-prx1_u2≈prx1_u1_dpch-prx1_u2_dpch；
b2)prx2_u1-prx2_u2≈prx1_u2_dpch-prx2_u2_dpch。
By equation a2), b2) bring formula into a), b), directly utilize follow the difference power relation of DPCH to judge can empty point.
3.1.3), if treat that the spatial channel allocation is different types of channel, its principle is with the computational process in 3.1.1, and by the result obtaining be brought into formula a), carry out the judgement of empty point Rule of judgment in b).
3.2) sky of outdoor up channel divides
3.2.1) if treat that the channel of empty point is identical, and be all E-PUCH channel:
Wherein w
1, w
2be respectively the beam shaping vector of terminal 1,2; w
1 hand w
2 hin subscript " H " represent conjugate transpose; R
xx (1), R
xx (2)be respectively the channel correlation matrix of terminal 1,2, by the not the spatial channel allocation of each terminal, such as the channel estimating of following DPCH channel obtains; PRRI is the power mandate of base station to terminal, on E-AGCH, carries to terminal.
3.2.2) if treat that the channel of empty point is identical, and be all the fixing channel of code check:
Wherein w
1, w
2be respectively the beam shaping vector of terminal 1,2; w
1 hand w
2 hin subscript " H " represent conjugate transpose; R
xx (1), R
xx (2)be respectively the channel correlation matrix of terminal 1,2, by the not the spatial channel allocation of each terminal, such as the channel estimating of following DPCH channel obtains; PRRI is the power mandate of base station to terminal, on E-AGCH, carries to terminal.
Because there is closed-loop power control, in the reasonable situation of power control, the expectation received power of different terminals is roughly the same.
3.2.3) if treat the channel difference of empty point, still can utilize 3.1.1 above), 3.2.1), 3.2.2) thought carry out the approximate calculation of difference power, and be brought into a), carry out sky point condition judgment in b).
4, divide for the sky of down channel
4.1) sky of indoor down channel divides
The first ownership passage of supposing terminal 1,2 is respectively passage 1,2, and path loss relation as shown in Figure 3.And the empty sub-signal of supposing each terminal only sends at the affiliated passage of terminal, the spatial channel allocation for the treatment of of terminal 1,2 is respectively Ptx1 and Ptx2 in the transmitting power of the first ownership passage separately.
Now, have:
c1)prxUE1_u1-prxUE1_u2＝(ptx1+L11)-(ptx2+L21)＝(ptx1-ptx2)-(prx1_u1_dpch-prx2_u1_dpch)；
d1)prxUE2_u2-prxUE2_u1＝(ptx2+L22)-(ptx1+L12)＝(ptx2-ptx1)-(prx2_u2_dpch-prx1_u2_dpch)。
Wherein, prx1_u1_dpch, prx2_u1_dpch are respectively the power of following DPCH of the UE1 that passage 1,2 receives, prx1_u2_dpch, prx2_u2_dpch are respectively the power of following DPCH of the UE2 that passage 1,2 receives, and these variablees are all known.
Bring above result into formula c), d), can judge difference power and whether meet second empty point of Rule of judgment.Now divide for lower line space, base station can be treated the poor calculating of related power of the spatial channel allocation more accurately.
In addition, by formula c1), d1) known, base station side can also and power control combination, adjust transmitting power and make that related power is poor meets second empty point of Rule of judgment, thus realize from simple judgement can empty assign to can control can empty point transformation.
4.2) sky of outdoor down channel divides
Now, second empty point of Rule of judgment is:
Wherein w
1, w
2be respectively the beam shaping vector of terminal 1,2, w
1 hand w
2 hin subscript " H " represent conjugate transpose, R
xx (1), R
xx (2)be respectively the channel correlation matrix of terminal 1,2, by the not the spatial channel allocation of each terminal, such as the channel estimating of following DPCH channel obtains; Ptx_UE1, Ptx_UE2 are respectively the transmitting power of base station side terminal 1,2.
Bring above result into formula c), d), can judge that related power is poor and whether meet second empty point of Rule of judgment.Now divide for lower line space, base station can be treated the poor calculating of related power of the spatial channel allocation more accurately.
In addition, by formula c2), d2) known, base station side can also and power control combination, adjust transmitting power and make that related power is poor meets second empty point of Rule of judgment, thus realize from simple judgement can empty assign to can control can empty point transformation.
Embodiments of the invention provide a kind of network equipment, and as shown in Figure 4, network equipment 400 comprises:
The first judge module 420, judges that for the described measurement result of obtaining according to acquisition module 410 between associated terminal, whether meeting the first sky divides Rule of judgment;
The second judge module 430, for meet the terminal of described first empty point of Rule of judgment for the first judge module 420 judgement, the described related power that obtains according to acquisition module 410 is poor judges between associated terminal, whether to meet second empty point of Rule of judgment;
Wherein, the first judge module 420 specifically for:
The described measurement result of described different terminals meets default sky while dividing isolation thresholding, judges and between described associated terminal, meets first empty point of Rule of judgment;
The described measurement result of described different terminals does not meet default sky while dividing isolation thresholding, judges and between described associated terminal, does not meet first empty point of Rule of judgment.
Wherein, the second judge module 430 specifically for:
Described related power is poor while meeting default sky point power threshold, judges and between described associated terminal, meets second empty point of Rule of judgment;
Described related power is poor while not meeting default sky point power threshold, judges and between described associated terminal, do not meet second empty point of Rule of judgment.
Wherein, the second judge module 430 also for:
Sky for indoor up channel divides, and each terminal and other-end be the expectation received power until the spatial channel allocation of this terminal attaching passage is poor while being greater than corresponding default sky point power threshold, judge and between associated terminal, meets the second empty Rule of judgment that divides;
Sky for outdoor up channel divides, when the difference of the total expectation interference signal received power to this terminal until the spatial channel allocation of the total expectation useful signal received power until the spatial channel allocation of each terminal and other-end is greater than corresponding default sky point power threshold, judge and between associated terminal, meet the second empty Rule of judgment that divides;
Sky for down channel divides, each terminal this terminal in the time that the spatial channel allocation expects that the useful signal that receives and the difference of interference signal are greater than corresponding default sky point power threshold, judge and between associated terminal, meet second empty point of Rule of judgment.
Wherein, described in the time that the spatial channel allocation is different types of channel, for different terminals, the default sky of described correspondence divides power threshold identical or different.
As shown in Figure 5, network equipment 400 also comprises:
Adjusting module 450, for poor by the related power for the treatment of the spatial channel allocation of adjusting the power mandate adjustment up channel to terminal; And/or the related power for the treatment of the spatial channel allocation of the transmitted power of terminal being adjusted to down channel by adjustment is poor.
Embodiments of the invention have the following advantages: the embodiment of the present invention carries out dividing judgement based on the sky of first empty point of Rule of judgment (empty point isolation) in the measurement result of the spatial channel allocation not according to terminal, and to the terminal of dividing Rule of judgment by the first sky, the poor sky that carries out second empty point of Rule of judgment of related power for the treatment of the spatial channel allocation according to it divides judgement (related power is poor), thereby can the Rule of judgment that carry out empty point between terminal be optimized, avoid carrying out large-signal strong jamming small-signal between empty terminal of dividing, improve the accuracy of empty point of judgement.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions (can be mobile phones in order to make a station terminal equipment, personal computer, server, or the network equipment etc.) carry out the method described in each embodiment of the present invention.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
Claims (10)
1. sky divides a determination methods, it is characterized in that, comprising:
Obtain the measurement result of different terminals; Judge that according to described measurement result between associated terminal, whether meeting the first sky divides Rule of judgment;
The related power that obtains the terminal that meets described first empty point of Rule of judgment is poor; Judge that according to described related power is poor between associated terminal, whether meeting the second sky divides Rule of judgment;
The terminal that meets described second empty point of Rule of judgment is carried out to dispatching space division;
Wherein, describedly judge between associated terminal that according to described related power is poor whether meeting second empty point of Rule of judgment comprises any in following multiple situation:
Sky for indoor up channel divides, and each terminal and other-end be the expectation received power until the spatial channel allocation of this terminal attaching passage is poor while being greater than corresponding default sky point power threshold, judge and between associated terminal, meets the second empty Rule of judgment that divides;
Sky for outdoor up channel divides, when the difference of the total expectation interference signal received power to this terminal until the spatial channel allocation of the total expectation useful signal received power until the spatial channel allocation of each terminal and other-end is greater than corresponding default sky point power threshold, judge and between associated terminal, meet the second empty Rule of judgment that divides;
Sky for down channel divides, each terminal this terminal in the time that the spatial channel allocation expects that the useful signal that receives and the difference of interference signal are greater than corresponding default sky point power threshold, judge and between associated terminal, meet second empty point of Rule of judgment.
2. the method for claim 1, is characterized in that, describedly judges between associated terminal that according to described measurement result whether meeting first empty point of Rule of judgment comprises:
The described measurement result of described different terminals meets default sky while dividing isolation thresholding, judges and between described associated terminal, meets first empty point of Rule of judgment;
The described measurement result of described different terminals does not meet default sky while dividing isolation thresholding, judges and between described associated terminal, does not meet first empty point of Rule of judgment.
3. the method for claim 1, is characterized in that, describedly judges between associated terminal that according to described related power is poor whether meeting second empty point of Rule of judgment comprises:
Described related power is poor while meeting default sky point power threshold, judges and between described associated terminal, meets second empty point of Rule of judgment;
Described related power is poor while not meeting default sky point power threshold, judges and between described associated terminal, do not meet second empty point of Rule of judgment.
4. the method for claim 1, is characterized in that, described in the time that the spatial channel allocation is different types of channel, for different terminals, the default sky of described correspondence divides power threshold identical or different.
5. the method as described in claim 1 or 3, is characterized in that, described to meeting after the terminal of described second empty point of Rule of judgment carries out dispatching space division, also comprises:
The related power for the treatment of the spatial channel allocation of the power mandate of terminal being adjusted to up channel by adjustment is poor; And/or
The related power for the treatment of the spatial channel allocation of the transmitted power of terminal being adjusted to down channel by adjustment is poor.
6. a network equipment, is characterized in that, comprising:
Acquisition module, for obtaining the measurement result of different terminals; The related power that is used for obtaining the terminal that meets the first sky point Rule of judgment is poor;
The first judge module, judges that for the described measurement result of obtaining according to described acquisition module between associated terminal, whether meeting the first sky divides Rule of judgment;
The second judge module, for meet the terminal of described first empty point of Rule of judgment for described the first judge module judgement, the described related power that obtains according to described acquisition module is poor judges between associated terminal, whether to meet second empty point of Rule of judgment;
Scheduler module, carries out dispatching space division for the terminal that described the second judge module judgement is met to described second empty point of Rule of judgment;
Described the second judge module also for:
Sky for indoor up channel divides, and each terminal and other-end be the expectation received power until the spatial channel allocation of this terminal attaching passage is poor while being greater than corresponding default sky point power threshold, judge and between associated terminal, meets the second empty Rule of judgment that divides;
Sky for outdoor up channel divides, when the difference of the total expectation interference signal received power to this terminal until the spatial channel allocation of the total expectation useful signal received power until the spatial channel allocation of each terminal and other-end is greater than corresponding default sky point power threshold, judge and between associated terminal, meet the second empty Rule of judgment that divides;
Sky for down channel divides, each terminal this terminal in the time that the spatial channel allocation expects that the useful signal that receives and the difference of interference signal are greater than corresponding default sky point power threshold, judge and between associated terminal, meet second empty point of Rule of judgment.
7. network equipment as claimed in claim 6, is characterized in that, described the first judge module specifically for:
The described measurement result of described different terminals meets default sky while dividing isolation thresholding, judges and between described associated terminal, meets first empty point of Rule of judgment;
The described measurement result of described different terminals does not meet default sky while dividing isolation thresholding, judges and between described associated terminal, does not meet first empty point of Rule of judgment.
8. network equipment as claimed in claim 6, is characterized in that, described the second judge module specifically for:
Described related power is poor while meeting default sky point power threshold, judges and between described associated terminal, meets second empty point of Rule of judgment;
Described related power is poor while not meeting default sky point power threshold, judges and between described associated terminal, do not meet second empty point of Rule of judgment.
9. network equipment as claimed in claim 6, is characterized in that, described in the time that the spatial channel allocation is different types of channel, for different terminals, the default sky of described correspondence divides power threshold identical or different.
10. the network equipment as described in claim 6 or 8, is characterized in that, also comprises:
Adjusting module, for poor by the related power for the treatment of the spatial channel allocation of adjusting the power mandate adjustment up channel to terminal; And/or the related power for the treatment of the spatial channel allocation of the transmitted power of terminal being adjusted to down channel by adjustment is poor.
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| CN110868751B (en) * | 2018-08-27 | 2021-06-11 | 大唐移动通信设备有限公司 | Spatial multiplexing method and device |
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| CN101267235A (en) * | 2007-03-16 | 2008-09-17 | 大唐移动通信设备有限公司 | A method and device for realizing space division multiplexing |
| CN101335970A (en) * | 2007-06-26 | 2008-12-31 | 中兴通讯股份有限公司 | SDMA communication system resource distribution implementing method and apparatus |
| CN101345975A (en) * | 2007-07-13 | 2009-01-14 | 中兴通讯股份有限公司 | Method and apparatus for space division multiple access resource scheduling, and radio communication system |
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| CN101267235A (en) * | 2007-03-16 | 2008-09-17 | 大唐移动通信设备有限公司 | A method and device for realizing space division multiplexing |
| CN101335970A (en) * | 2007-06-26 | 2008-12-31 | 中兴通讯股份有限公司 | SDMA communication system resource distribution implementing method and apparatus |
| CN101345975A (en) * | 2007-07-13 | 2009-01-14 | 中兴通讯股份有限公司 | Method and apparatus for space division multiple access resource scheduling, and radio communication system |
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