CN103313408A - Multi-sector coordinated scheduling method and device - Google Patents

Abstract

The invention provides a multi-sector coordinated scheduling method which comprises fetching sequentially terminals to be scheduled in a base band pool according to a scheduling priority. Each of the fetched terminals to be scheduled is undergoing the following operations: idle resource blocks are sorted according to a signal quality value obtained by a current terminal to be scheduled on each of the idle resource blocks; the idle resource blocks are sequentially fetched from good to bad; each of the idle resource blocks is judged whether the idle resource block meets a preset distribution requirement; if the idle resource block meets the preset distribution requirement, the idle resource block is distributed to the current terminal to be scheduled; if the idle resource block does not meet the preset distribution requirement, another idle resource block is fetched and judged utile one idle resource block is distributed to the current terminal to be scheduled or all the idle resource blocks cannot be distributed to the current terminal to be scheduled. The invention also provides a multi-sector coordinated scheduling device.

Description

A kind of many sectors coordinated scheduling method and device

Technical field

The present invention relates to the communications field, relate in particular to many sectors coordinated scheduling method and device in the distributing antenna system of a kind of OFDM (Orthogonal Frequency Division Multiplexing is referred to as OFDM).

Background technology

Coordinate multipoint (Coordinative Multiple Point, COMP) technology refers to that namely the transfer point of the separate dispersion in a plurality of geographical position is a plurality of Terminal Service by different cooperation mode (such as joint transmission, Combined Treatment, cooperative scheduling etc.).Wherein, a plurality of transfer points can be the base stations with complete resource management module, baseband processing module and radio frequency unit, or a plurality of radio frequency units of geographical position inequality and antenna (such as spaced antenna), or via node.

In OFDM (Orthogonal Frequency Division Multiplexing is referred to as OFDM) system, in the same sector, when base station and different terminals carry out downlink data transmission, because these down links are orthogonal, so, can avoid disturbing in the sector.Yet the down link between the different sectors may not be quadrature, and therefore, each terminal may be subject to the descending interference from the base station of other adjacent sectors, that is, and and inter-sector interference.If inter-sector interference is serious, then can reduces the transmittability of power system capacity, particularly sector-edge terminal, and then affect the covering power of system and the performance of terminal.In order to overcome inter-sector interference and to guarantee certain bandwidth availability ratio, can adopt the interference coordination technique of time-frequency domain, different sub band resources is distributed to edge termination, to reduce inter-sector interference intensity.

The interference coordination dispatching method is that different sub band resources is distributed the each other terminal of interference source, to reduce as much as possible presence of intercell interference intensity, but in traditional interference coordination dispatching method for each sector, simply edge termination is considered as the each other terminal of interference source, and the sub band resources piece of distributing to edge termination is fixed, the gain of when the edge termination that guarantees adjacent sectors distributes the different sub-band Resource Block, also having lost frequency selectivity like this, and in the situation of load imbalance, have the wasting of resources.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of many sectors coordinated scheduling method and device, is not increasing extra signaling consumption and is guaranteeing as far as possible to realize under the flow prerequisite of sector interference coordination between the sector, the purpose that the enhancing system covers to reach.

In order to address the above problem, the invention provides a kind of many sectors coordinated scheduling method, comprising:

Take out successively the dispatch terminal for the treatment of in the baseband pool according to dispatching priority, each of taking out treated dispatch terminal, carry out following operation:

Treat that by current signal quality value that dispatch terminal obtains at each idling-resource piece is to the idling-resource block sequencing, from getting well to differing from, take out the idling-resource piece by signal quality in turn, judge whether to satisfy default distributive condition, if satisfy, then this idling-resource piece is distributed to the described current dispatch terminal for the treatment of, otherwise, continue to take out next idling-resource piece and judge, until distributed the idling-resource piece or judged that all idling-resource pieces all can't distribute to the described current dispatch terminal for the treatment of for the described current dispatch terminal for the treatment of.

Further, said method also can have following characteristics, describedly judges whether to satisfy default distributive condition and comprises:

Judge other sectors dispatch terminal on the idling-resource piece of current taking-up whether under the same baseband pool, if do not have, then satisfy default distributive condition;

If other sectors of at least one under the same baseband pool are dispatch terminal on the idling-resource piece of current taking-up, then:

Judgement the idling-resource piece of described current taking-up is distributed to current when treating dispatch terminal, whether whether the interference that this is current treats each terminal that dispatch terminal is dispatched at the idling-resource piece of current taking-up each sector under the described baseband pool descend less than or equal to the signal quality thresholding less than or equal to the signal quality that interference threshold or interference cause, if, then satisfy described default distributive condition, otherwise, do not satisfy described default distributive condition.

Further, said method also can have following characteristics, describedly judges whether to satisfy default distributive condition and comprises:

If the current dispatch terminal for the treatment of is without the cooperation sector, perhaps, the current dispatch terminal for the treatment of has the cooperation sector, and current cooperation sector for the treatment of dispatch terminal dispatch terminal on the idling-resource piece of current taking-up not, then satisfies default distributive condition;

If there is dispatch terminal on the idling-resource piece of current taking-up the current cooperation sector of dispatch terminal for the treatment of, then judge the idling-resource piece of described current taking-up is distributed to described current when treating dispatch terminal, whether whether the interference that this is current treats each terminal that dispatch terminal is dispatched at the idling-resource piece of current taking-up its sector that respectively cooperates descend less than or equal to the signal quality thresholding less than or equal to the signal quality that interference threshold or interference cause, if, then satisfy described default distributive condition, otherwise, do not satisfy described default distributive condition.

Further, said method also can have following characteristics, and described method also comprises:

If the serving sector of terminal less than described MCS threshold value, then is the far point edge termination with the channel quality indicator (CQI) of terminal feedback corresponding modulating-coding collection MCS and given MCS threshold ratio;

Otherwise, the serving sector of this terminal is added up the Reference Signal Received Power RSRQ metrical information that arrives adjacent sectors of this terminal to report and the RSRQ metrical information that this terminal arrives described serving sector, difference more between the two and given measurement difference threshold, if less than described measurement difference threshold, then this adjacent sectors is the cooperation sector of this terminal; The sector if this terminal does not cooperate, then this terminal is interior ring terminal, otherwise is the near point edge termination;

When terminal is far point edge termination or interior ring terminal, without the cooperation sector, when terminal is the near point edge termination, the cooperation sector is arranged.

Further, said method also can have following characteristics, judges that as follows the current signal quality for the treatment of that dispatch terminal causes the interference of the terminal of dispatching at the idling-resource piece of current taking-up descends whether less than or equal to the signal quality thresholding:

Calculating is distributing the idling-resource piece of described current taking-up and is not distributing to described when treating dispatch terminal, the new signal mass value of the terminal of dispatching on the idling-resource piece of described current taking-up and original signal mass value, obtain the overall spectrum variable quantity according to this new signal mass value and original signal mass value, with this overall spectrum variable quantity and default overall spectrum variable quantity threshold ratio, if less than or equal to described overall spectrum variable quantity threshold value, then disturb the signal quality that causes to descend less than or equal to the signal quality thresholding, otherwise, disturb the signal quality that causes to descend greater than the signal quality thresholding.

Further, said method also can have following characteristics, and described signal quality value is Signal to Interference plus Noise Ratio SINR value;

Describedly obtain the overall spectrum variable quantity according to this new signal mass value and original signal mass value and comprise:

${\mathrm{\ΔSE}}_{\mathrm{UE}}=\frac{\log (1+{\mathrm{SINR}}_{\mathrm{UE}})-\log (1+\mathrm{New}{\mathrm{SINR}}_{\mathrm{UE}})}{\log (1+{\mathrm{SINR}}_{\mathrm{UE}})}$

Wherein, SINR _UEBe original signal mass value, NewSINR _UEBe the new signal mass value, Δ SE _UEBe the overall spectral efficiency variable quantity.

The present invention also provides a kind of many sectors coordinated scheduling device, comprising:

The dispatching priority determining unit is used for the dispatching priority that definite baseband pool is treated dispatch terminal, takes out successively according to described dispatching priority and treats dispatch terminal;

The Resource Block sequencing unit is used for treating that according to the current taking-up of dispatching priority determining unit signal quality value that dispatch terminal obtains at each idling-resource piece is to the idling-resource block sequencing;

Scheduling unit, be used for from getting well to differing from, taking out the idling-resource piece according to signal quality in turn by the ordering of Resource Block sequencing unit, judge whether to satisfy default distributive condition, if satisfy, then this idling-resource piece is distributed to the dispatch terminal for the treatment of of the current taking-up of described dispatching priority determining unit, otherwise, continue to take out next idling-resource piece and judge, until distributed the idling-resource piece or judged that all idling-resource pieces all can't distribute to the dispatch terminal for the treatment of of the current taking-up of described dispatching priority determining unit for the dispatch terminal for the treatment of of the current taking-up of described dispatching priority determining unit.

Further, said apparatus also can have following characteristics, and described scheduling unit judges whether to satisfy default distributive condition according to following mode:

Judge other sectors dispatch terminal on the idling-resource piece of current taking-up whether under the same baseband pool, if do not have, then satisfy default distributive condition;

If other sectors of at least one under the same baseband pool are dispatch terminal on the idling-resource piece of current taking-up, then:

Judgement the idling-resource piece of described current taking-up is distributed to current when treating dispatch terminal, whether whether the interference that this is current treats each terminal that dispatch terminal is dispatched at the idling-resource piece of current taking-up each sector under the described baseband pool descend less than or equal to the signal quality thresholding less than or equal to the signal quality that interference threshold or interference cause, if, then satisfy described default distributive condition, otherwise, do not satisfy described default distributive condition.

Further, said apparatus also can have following characteristics, and described scheduling unit judges whether to satisfy default distributive condition according to following mode:

If the current dispatch terminal for the treatment of is without the cooperation sector, perhaps, the current dispatch terminal for the treatment of has the cooperation sector, and current cooperation sector for the treatment of dispatch terminal dispatch terminal on the idling-resource piece of current taking-up not, then satisfies default distributive condition;

If there is dispatch terminal on the idling-resource piece of current taking-up the current cooperation sector of dispatch terminal for the treatment of, then judge the idling-resource piece of described current taking-up is distributed to described current when treating dispatch terminal, whether whether the interference that this is current treats each terminal that dispatch terminal is dispatched at the idling-resource piece of current taking-up its sector that respectively cooperates descend less than or equal to the signal quality thresholding less than or equal to the signal quality that interference threshold or interference cause, if, then satisfy described default distributive condition, otherwise, do not satisfy described default distributive condition.

Further, said apparatus also can have following characteristics, and described device also comprises the terminal type determining unit, is used for terminal feedback channel quality indicator (CQI) corresponding modulating-coding collection MCS and given MCS threshold ratio, if less than described MCS threshold value, it then is the far point edge termination; Otherwise, add up the Reference Signal Received Power RSRQ metrical information that arrives adjacent sectors of this terminal to report and the RSRQ metrical information that this terminal arrives described serving sector, difference more between the two and given measurement difference threshold, if less than described measurement difference threshold, then this adjacent sectors is the cooperation sector of this terminal; The sector if this terminal does not cooperate, then this terminal is interior ring terminal, otherwise is the near point edge termination;

Current when treating that dispatch terminal is far point edge termination or interior ring terminal, without the cooperation sector; Current when treating that dispatch terminal is the near point edge termination, the cooperation sector is arranged.

Further, said apparatus also can have following characteristics, and described scheduling unit judges that as follows the current signal quality for the treatment of that dispatch terminal causes the interference of the terminal of dispatching at the idling-resource piece of current taking-up descends whether less than or equal to the signal quality thresholding:

Calculating is distributing the idling-resource piece of described current taking-up and is not distributing to described when treating dispatch terminal, the new signal mass value of the terminal of dispatching on the idling-resource piece of described current taking-up and original signal mass value, obtain the overall spectrum variable quantity according to this new signal mass value and original signal mass value, with this overall spectrum variable quantity and default overall spectrum variable quantity threshold ratio, if less than or equal to described overall spectrum variable quantity threshold value, then disturb the signal quality that causes to descend less than or equal to the signal quality thresholding, otherwise, disturb the signal quality that causes to descend greater than the signal quality thresholding.

Further, said apparatus also can have following characteristics, and described signal quality value is Signal to Interference plus Noise Ratio SINR value;

Described scheduling unit obtains the overall spectrum variable quantity according to this new signal mass value and original signal mass value and comprises:

${\mathrm{\ΔSE}}_{\mathrm{UE}}=\frac{\log (1+{\mathrm{SINR}}_{\mathrm{UE}})-\log (1+\mathrm{New}{\mathrm{SINR}}_{\mathrm{UE}})}{\log (1+{\mathrm{SINR}}_{\mathrm{UE}})}$

Wherein, SINR _UEBe original signal mass value, NewSINR _UEBe the new signal mass value, Δ SE _UEBe the overall spectral efficiency variable quantity.

The present invention utilizes the advantage that sector in the baseband pool can the shared terminal feedback information, the terminal of sectors all in the whole baseband pool is carried out unified prioritization, the terminal that priority is high is dispatched first, dispatch after the lower terminal of priority, when Resource Block is selected in scheduling, need to consider the optimum of self and the higher terminal of priority is disturbed enough little two factors.And the prioritization of existing technology terminal only only limits among this sector, in scheduling, do not estimate the interference that the terminal to other sectors may cause yet, and just it selects to reach the effect that suppresses of disturbing in given part Resource Block according to the dissimilar pressure of terminal, lacks flexibility.Can estimate interference by the present invention, guaranteeing that the high terminal distribution of priority is under the prerequisite of best resource blocks, as much as possible so that disturb each other stronger terminal distribution to not identical frequency subband resource between the cooperation sector, to reach interference coordination, improve the purpose of the spectrum efficiency of overall spectral efficiency and edge termination.

Description of drawings

Fig. 1 is the entire flow figure according to the embodiment of the invention 1 system assignment resource method;

Fig. 2 is according to the sector of the embodiment of the invention 1 particular flow sheet to terminal distribution RB (Resource Block, Resource Block) Resource Block;

Fig. 3 is the distribution scene of not dispatching RB according to the embodiment of the invention 1;

Fig. 4 is according to the particular flow sheet of the embodiment of the invention 3 sectors to terminal distribution RB;

Fig. 5 is many sectors of embodiment of the invention coordinated scheduling device block diagram.

Embodiment

Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove, in the situation that do not conflict, embodiment and the feature among the embodiment among the application can make up mutually.

Because the total transmitting power of terminal has the upper limit, therefore the number of transmit antennas of terminal is more, average transmitting power to every transmit antennas is just less, therefore when terminal adopts single-antenna transmission during than the antenna transmission of manying operable power large, in order to strengthen as much as possible the up-link coverage, the complexity of simultaneously also reduction system realization, the terminal among the present invention adopt single antenna to send data.

By the present invention, system is divided into several baseband pool with all base stations, the feedback information of schedule information and terminal measurement can be shared in sector in the same baseband pool, arranging of baseband pool is changeable, such as, three sectors under a base station or the different base station can be considered as a baseband pool, again such as, totally two ten one sectors under seven base stations that can the geographical position is adjacent are considered as a baseband pool.The maximum sector number that baseband pool comprises does not limit, and decides on the baseband pool disposal ability, can share because the sector schedule information in the baseband pool and terminal are measured feedack, therefore the terminal in the baseband pool can be carried out United Dispatching.

At first calculate the weights that each treats dispatch terminal, each sector can be according to CQI (the Channel Quality Information of terminal feedback, channel quality indication (CQI) information) calculating priority level weights, then the weights information of all terminals is shared in the sector under the same baseband pool, carry out the integral body ordering, according to this ordering, be followed successively by the terminal distribution scheduling resource, simultaneously, when giving the terminal distribution resource, need to estimate the interference that meeting causes the terminal of having dispatched after this scheduling of resource of this terminal, if disturb excessive, so that the signal quality of the terminal of having dispatched (available Signal to Interference plus Noise Ratio description) decline ratio surpasses certain threshold value, then can not give this resource of this terminal distribution, need to change other Resource Block and distribute; Otherwise, this resource can be distributed to this terminal.

Wherein, terminal is before certain Resource Block of scheduling, need to estimate the interference of the every other sector under the same baseband pool having been dispatched the terminal of same resource block, if on this Resource Block, adjacent sectors does not also have dispatching distribution to terminal, then need not to consider disturbed condition, that is to say, because the higher terminal of priority is dispatched more first, need to consider that the situation that other-end is disturbed is just fewer, constraint is just fewer, just more might choose optimum Resource Block, and dispatching distribution after the low terminal of priority since before the terminal of dispatching distribution, terminal need to be considered the interference of other-end just manyly so, and optional Resource Block is just fewer.

Another kind of mode is the interference of not considering one by one the terminal on the every other sector same resource block under the same baseband pool, can selectively consider the interference to the part sector, and is concrete:

The cooperation sets of sectors of terminal can be determined according to the measurement result of terminal to report in each sector under the baseband pool, supposes that terminal is U, and its serving sector is S, metrical information satisfies sector certain condition and that be positioned under the same baseband pool and is { N1, N2, N3}, then the cooperation sets of sectors of U is { N1, N2, if N3} is according to certain rule, the element of judging in the terminal U cooperation sets of sectors only has one, namely only have serving sector, then this terminal is interior ring terminal, otherwise then is edge termination.If the terminal of scheduling is interior ring terminal, then need not to consider this terminal to the interference of other-end, if terminal is edge termination, before this terminal of scheduling, need to estimate this terminal has been determined the terminal of scheduling to its cooperation sector interference so.Wherein, edge termination further comprises near point edge termination and far point edge termination.When the sector number in baseband pool is more, three layers of totally 57 sector are for example arranged, the method can reduce amount of calculation.

The embodiment of the invention provides a kind of many sectors coordinated scheduling method, comprising:

Take out successively the dispatch terminal for the treatment of in the baseband pool according to dispatching priority, each of taking out treated dispatch terminal, carry out following operation:

Treat that by current signal quality value that dispatch terminal obtains at each idling-resource piece is to the idling-resource block sequencing, from getting well to differing from, take out the idling-resource piece by signal quality in turn, judge whether to satisfy default distributive condition, if satisfy, then this idling-resource piece is distributed to the described current dispatch terminal for the treatment of, otherwise, continue to take out next idling-resource piece and judge, until distributed the idling-resource piece or judged that all idling-resource pieces all can't distribute to the described current dispatch terminal for the treatment of for the described current dispatch terminal for the treatment of.

Wherein, judge whether to satisfy default distributive condition according to following mode:

Judge other sectors dispatch terminal on the idling-resource piece of current taking-up whether under the same baseband pool, if do not have, then satisfy default distributive condition;

If other sectors of at least one under the same baseband pool are dispatch terminal on the idling-resource piece of current taking-up, then:

Judgement the idling-resource piece of described current taking-up is distributed to current when treating dispatch terminal, whether whether the interference that this is current treats each terminal that dispatch terminal is dispatched at the idling-resource piece of current taking-up each sector under the described baseband pool descend less than or equal to the signal quality thresholding less than or equal to the signal quality that interference threshold or interference cause, if, then satisfy described default distributive condition, otherwise, do not satisfy described default distributive condition.

Wherein, judge whether to satisfy default distributive condition according to following mode:

If the current dispatch terminal for the treatment of is without the cooperation sector, perhaps, the current dispatch terminal for the treatment of has the cooperation sector, and current cooperation sector for the treatment of dispatch terminal dispatch terminal on the idling-resource piece of current taking-up not, then satisfies default distributive condition;

If there is dispatch terminal on the idling-resource piece of current taking-up the current cooperation sector of dispatch terminal for the treatment of, then judge the idling-resource piece of described current taking-up is distributed to described current when treating dispatch terminal, whether whether the interference that this is current treats each terminal that dispatch terminal is dispatched at the idling-resource piece of current taking-up its sector that respectively cooperates descend less than or equal to the signal quality thresholding less than or equal to the signal quality that interference threshold or interference cause, if, then satisfy described default distributive condition, otherwise, do not satisfy described default distributive condition.

Wherein, the cooperation sector of terminal can adopt various ways to determine, a kind of mode is as follows:

If the serving sector of terminal less than described MCS threshold value, then is the far point edge termination with the modulating-coding collection MCS of terminal feedback and given MCS threshold ratio;

Otherwise, the serving sector of this terminal is added up the Reference Signal Received Power RSRQ metrical information that arrives adjacent sectors of this terminal to report and the RSRQ metrical information that this terminal arrives described serving sector, difference more between the two and given measurement difference threshold, if less than described measurement difference threshold, then this adjacent sectors is the cooperation sector of this terminal; The sector if this terminal does not cooperate, then this terminal is interior ring terminal, otherwise is the near point edge termination;

When terminal is far point edge termination and interior ring terminal, without the cooperation sector, when terminal is the near point edge termination, the cooperation sector is arranged.

Wherein, judge as follows current treat dispatch terminal to the interference of the terminal of dispatching at the idling-resource piece of current taking-up whether less than or equal to interference threshold:

Calculating is distributing the idling-resource piece of described current taking-up and is not distributing to described when treating dispatch terminal, the new signal mass value of the terminal of dispatching on the idling-resource piece of described current taking-up and original signal mass value, obtain a relevant variable quantity according to this new signal mass value and original signal mass value, such as, the overall spectrum variable quantity, with this overall spectrum variable quantity and default overall spectrum variable quantity threshold ratio, if less than or equal to described overall spectrum variable quantity threshold value, then disturb the signal quality that causes to descend less than or equal to the signal quality thresholding, otherwise, disturb the signal quality that causes to descend greater than the signal quality thresholding.The overall spectrum variable quantity only is example, also can judge according to other values of new signal mass value and the generation of original signal mass value.

Wherein, described signal quality value is Signal to Interference plus Noise Ratio SINR value;

Describedly obtain the overall spectrum variable quantity according to this new signal mass value and original signal mass value and comprise:

${\mathrm{\ΔSE}}_{\mathrm{UE}}=\frac{\log (1+{\mathrm{SINR}}_{\mathrm{UE}})-\log (1+\mathrm{New}{\mathrm{SINR}}_{\mathrm{UE}})}{\log (1+{\mathrm{SINR}}_{\mathrm{UE}})}$

Wherein, SINR _UEBe original signal mass value, NewSINR _UEBe the new signal mass value, Δ SE _UEBe the overall spectral efficiency variable quantity.Signal quality value also can use the value of other energy gauge signal quality except SINR, and the present invention is not construed as limiting this.

Embodiment 1

According to the embodiment of the invention, provide in a kind of distributing antenna system, method and the flow process of the scheduling of sector interference coordination in the baseband pool, referring to accompanying drawing 1, the specific implementation step comprises:

Step S101, sector coordinated scheduling update cycle T1 in the system configuration baseband pool.T1 does not upgrade sector schedule information in the baseband pool in the cycle;

Step S102, MCS (the Modulating and Coding Set of the feedback of each serving sector statistics terminal, the modulating-coding collection) information and RSRQ (Reference Signal Received Power, Reference Signal Received Power) metrical information is determined the type of terminal and the sets of sectors that cooperates.Concrete grammar is as follows:

The MCS information of the feedback of serving sector statistics terminal, if the size of the MCS that relatively feeds back and given MCS threshold value less than given MCS threshold value, then is the far point edge termination, otherwise needs further to judge, and is specific as follows:

The RSRQ metrical information that RSRQ metrical information and the terminal to adjacent sectors of serving sector statistics terminal to report arrives serving sector, the size of difference more between the two and given measurement difference threshold joins in the cooperation list of sectors satisfying the sector index of difference less than given measurement difference threshold; If the element in the cooperation list of sectors is empty, then terminal is interior ring terminal, otherwise is the near point edge termination, and the sector in the cooperation list of sectors is the COMP set sector of described near point edge termination;

Wherein, also can be come by the base station geographical position of locating terminal, determine terminal type and cooperation sector according to the geographical position.

Step S103, each serving sector Sector (j) adds up the disturbed condition Rnn (j that is subject on each frequency subband in the dispatching cycle from the UE outside the sets of sectors in this baseband pool, k), because the instantaneous disturbance channel in this baseband pool outside the sets of sectors can't obtain, so Rnn (j, k) can only adopt the mean value of long-time statistical

Come approximate:

${{\mathrm{\δ}}^2}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}\left(j\right)}=\mathrm{trace}({\mathrm{Rnn}}_{\mathrm{RB}\left(k\right)}^{\mathrm{Sector}\left(j\right)}-\underset{i=1}{\overset{I}{\mathrm{\Σ}}}{H}_{i,\mathrm{RB}\left(k\right)}{H}_{i,\mathrm{RB}\left(k\right)}^H)/\mathrm{RxNum}$

Wherein:

Trace is Matrix Calculating mark operator;

The total interference that is subject at RB (k) for Sector (j) and the autocorrelation matrix of noise;

For Sector (j) RB (k) be subject to from the interference of other sectors UE in the CoMP set and the autocorrelation matrix of noise; Wherein I equals CoMP set number and deducts 1;

RxNum represents the reception antenna number;

Owing to being subject to the outer interference channel coefficient of CoMP set, receiving terminal in the actual environment can't know, so

Information can't directly obtain.But can obtain by above method is approximate,

Be Rnn (j, k) value;

Step S104 carries out prioritization to all terminals to be scheduled of all sectors in the baseband pool, determines the at first terminal of scheduling, for example is the UEi of Sector2;

Concrete, proportionally fair scheduling algorithm carries out prioritization;

Step S105, transmitting power in conjunction with UE (i), estimate the signal quality of UE (i) on each idling-resource piece RB (k), concrete, can use SINR (Signal to Interference plus Noise Ratio, Signal to Interference plus Noise Ratio value, be called for short Signal to Interference plus Noise Ratio) the gauge signal quality, certainly, also can use other parameter gauge signal quality, the present invention is not construed as limiting this.Be assumed to be SINR _{UE (i), RB (k)}, a kind of computational methods are:

${\mathrm{SINR}}_{\mathrm{UE}\left(i\right),\mathrm{RB}\left(k\right)}=H_{\mathrm{RB}\left(k\right)}^H{\mathrm{Rnn}}^{-1}{H}_{\mathrm{RB}\left(k\right)}=H_{\mathrm{RB}\left(k\right)}^H{({{\mathrm{\δ}}^2}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}2}I+\mathrm{\Σ}{H}_{j,\mathrm{RB}\left(k\right)}{H}_{j,\mathrm{RB}\left(k\right)}^H)}^{-1}{H}_{\mathrm{RB}\left(k\right)}$

Step S106 is with the SINR of UE (i) on each RB _{UE (i), RB (k)}Descending ordering, and corresponding RB call number is stored in TmpSchd _UE11In;

Step S107 is from TmpSchd _{UE (i)}First index of middle taking-up is assumed to be RB (k), referring to accompanying drawing 2, determines whether Resource Block RB (k) is distributed to UE (i) according to step S108 and S109;

Step S108 judges at first whether UE (i) is interior ring terminal or far point edge termination, is then RB (k) resource to be distributed to UE (i), enters step S110, otherwise enters step S109;

Step S109, UE (i) is the near point edge termination, judges whether the sector in its CoMP set goes up dispatch terminal at RB (k), does not have dispatch terminal then Resource Block RB (k) to be distributed to UE (i); If the sector in its CoMP set has at least a sector to dispatch terminal at RB (k) at RB (k), then need to consider that the introducing of UE (i) is for the impact of the spectrum efficiency of the terminal of having dispatched according to following step:

Because the co-channel interference that UE (i) produces, the SINR of the terminal of having dispatched on RB (k) can reduce, and supposes that the terminal of having dispatched on RB (k) is the UE1 of Sector1, and the SINR that then UE1 is new is NewSINR _{UE1, RB (k)}

${\mathrm{NewSINR}}_{\mathrm{UE}1,\mathrm{RB}\left(k\right)}=H_{\mathrm{RB}}^H{\mathrm{Rnn}}^{-1}{H}_{\mathrm{RB}\left(k\right)}$

$=H_{\mathrm{RB}\left(k\right)}^H{({\stackrel{\‾}{\mathrm{Rnn}}}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}1}+H_{\mathrm{UE}\left(i\right),\mathrm{RB}\left(k\right)}{H}_{\mathrm{UE}\left(i\right),\mathrm{RB}\left(k\right)}^H)}^{-1}{H}_{\mathrm{RB}\left(k\right)}$

Wherein,

Be the Rnn value that UE1 calculates when not being subject to the co-channel interference of UE (i) generation, wherein may comprise other with the co-channel interference of the UE of distribution.H _{RB (k)}Expression equivalent channel coefficient value;

The original SINR of UE1 is SINR on RB (k) _{UE1, RB (k)}

UE1 is upper because the existence of UE (i) causes the variation delta SE of overall spectral efficiency at RB (k) _UE1

${\mathrm{\ΔSE}}_{\mathrm{UE}1}=\frac{\log (1+{\mathrm{SINR}}_{\mathrm{UE}1,\mathrm{RB}\left(k\right)})-\log (1+\mathrm{New}{\mathrm{SINR}}_{\mathrm{UE}1,\mathrm{RB}\left(k\right)})}{\log (1+{\mathrm{SINR}}_{\mathrm{UE}1,\mathrm{RB}\left(k\right)})}$

As Δ SE _UE1During less than or equal to a given threshold value, then RB (k) resource is distributed to UE (i), then execution in step S110;

As Δ SE _UE1During greater than a given threshold value, then with RB (k) from TmpSchd _{UE (i)}Delete in the set, and return execution in step S107; If the Δ SE on all RB (k) _UE1All greater than a given threshold value, then this terminal can't be dispatched, and changes step S111 over to;

Step S110 behind the successful scheduling resource block RB of UE (i) (k), upgrades the Rnn value of other sectors on RB (k), namely

${\stackrel{\‾}{\mathrm{Rnn}}}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}1}={\stackrel{\‾}{\mathrm{Rnn}}}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}1}+H_{\mathrm{UE}\left(i\right),\mathrm{RB}\left(k\right)}{H}_{\mathrm{UE}\left(i\right),\mathrm{RB}\left(k\right)}^H;$

Step S111 deletes UE (i) in treating the dispatch terminal set, if treat dispatch terminal set non-NULL, then return execution in step S104; If treat the dispatch terminal set for empty, then need to judge whether fully scheduling of all RB, if dispatch fully then execution in step S113, otherwise execution in step S112;

Step S112 finds the UE of the upper scheduling of RB of the RB index front and back that does not have scheduling, judges whether this UE is fit to use this RB resource.Do not dispatch the distribution scene of RB as shown in Figure 3.Wherein, UEa and UEb are the dispatch terminal of not dispatching both sides, RB zone, RB1 ..., RBn is not for dispatching RB.

The concrete steps of not dispatching the RB processing scheme are as follows:

Obtain and do not dispatch the RB set;

Do not dispatch RB set dividing subset, a plurality of RB that do not dispatch continuously are a subset;

Do not process dispatching the RB subset, suppose the current RB of scheduling subset for (RB1, RB2 ..., RBn-1, RBn);

From top to bottom, arrange attempt scheduling RB set (RB1, RB2 ..., RBn-1, RBn): UEa attempts scheduling RB1, judges whether and can dispatch, if can dispatch, then attempt scheduling RB1 and RB2, the like, if certain RB can't dispatch, then thereafter RB does not reattempt scheduling; Preserve the Δ SE result of calculation of attempting in the scheduling process;

From the bottom up, arrange attempt scheduling RB set (RBn, RBn-1 ..., RB2, RB1): UEb attempts scheduling RBn, judges whether and can dispatch, if can dispatch, then attempt scheduling RBn and RBn-1, the like, if certain RB can't dispatch, then thereafter RB does not reattempt scheduling; Preserve the Δ SE result of calculation of attempting in the scheduling process;

If UEa and UEb all can dispatch certain RB, then this RB is distributed to less terminal corresponding to Δ SE;

If UEa and UEb all can't dispatch certain RB, then never dispatch this RB of deletion in the RB subset.

Whether judge not dispatch in the RB set has residue not dispatch the RB subset, if having, then to return execution in step S112, otherwise finish.

Wherein, judge that the idiographic flow whether RBk can dispatch is as follows:

A) because UEa (UEb) behind data dispatching on the RBk, has produced interference to the dispatch terminal of Sector1 on RBk.Suppose that the dispatch terminal of Sector1 on RBk is UE1, then UE1 considers that the SINR after UEa (UEb) disturbs is:

${\mathrm{NewSINR}}_{\mathrm{UE}1,\mathrm{RBk}}=H_{\mathrm{RBk}}^H{\mathrm{Rnn}}^{-1}{H}_{\mathrm{RBk}}$

$=H_{\mathrm{RBk}}^H{({\stackrel{\‾}{\mathrm{Rnn}}}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}1}+H_{\mathrm{UEa}/\mathrm{UEb},\mathrm{RBk}}{H}_{\mathrm{UEa}/\mathrm{UEb},\mathrm{RBk}}^H)}^{-1}{H}_{\mathrm{RBk}}$

B) calculating Sector1 changes in the spectrum efficiency of RBk scheduling terminal UE 1:

${\mathrm{\ΔSE}}_{\mathrm{UE}1}=\frac{\log (1+{\mathrm{SINR}}_{\mathrm{UE}1,\mathrm{RBk}})-\log (1+\mathrm{New}{\mathrm{SINR}}_{\mathrm{UE}1,\mathrm{RBk}})}{\log (1+{\mathrm{SINR}}_{\mathrm{UE}1,\mathrm{RBk}})}$

C) if Δ SE _UE1Less than or equal to given threshold value, then can distribute to UEa (UEb) to RBk, otherwise, cannot distribute;

Step S113 finishes scheduling and withdraws from the scheduling circulation.

Can estimate interference by this method, guaranteeing that the high terminal distribution of priority is under the prerequisite of best resource blocks, as much as possible so that disturb each other stronger terminal distribution to not identical frequency subband resource between the cooperation sector, to reach interference coordination, improve the purpose of the spectrum efficiency of overall spectral efficiency and edge termination, simultaneously terminal is classified, only consider the impact of near point edge termination, to reach the purpose of the speed that improves algorithm.

Embodiment 2

According to the embodiment of the invention, provide in a kind of ofdm system, be positioned at method and flow process that the interference coordination scheduling is carried out in three sectors under the same base station, the specific implementation step comprises:

Step S201, sector coordinated scheduling update cycle T1 in the system configuration baseband pool.T1 does not upgrade the schedule information of three sectors under the same base station in the cycle;

Step S202, each serving sector is added up MCS information and the RSRQ metrical information of the feedback of terminal, determines the type of terminal.Concrete grammar is as follows:

The MCS information of the feedback of serving sector statistics terminal, relatively if the MCS of feedback and the size of given threshold value less than given threshold value, then are the far point edge termination, otherwise need further to judge, and be specific as follows:

The RSRQ metrical information that RSRQ metrical information and the terminal to adjacent two sectors of serving sector statistics terminal to report arrives serving sector, difference more between the two and the size of given threshold value join in the cooperation list of sectors satisfying the sector index of measured value difference less than given threshold value; If the element in the collaborative list of sectors is empty, then terminal is interior ring terminal, otherwise be the near point edge termination, and the sector in the cooperation list of sectors is the COMP set sector of described near point edge termination, generally speaking, for three sector systems, the cooperation sector of near point edge termination is 1, mostly is 2 most;

Step S203, each serving sector Sector (j) adds up the disturbed condition Rnn (j that is subject on each frequency subband in the dispatching cycle from the UE outside three sectors under this base station, k), because the instantaneous disturbance channel outside these base station three sets of sectors can't obtain, so Rnn (j, k) can only adopt the mean value of long-time statistical

Come approximate, and because the instantaneous disturbance channel outside three sectors can't obtain in this base station, and the instantaneous disturbance channel of three sectors can obtain in this base station, so can deduct the approximate Rnn that obtains outside the baseband pool sets of sectors of instantaneous disturbance Rnn_inner within this base station section set with measuring total Rnn_Total;

${{\mathrm{\δ}}^2}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}\left(j\right)}=\mathrm{trace}({\mathrm{Rnn}}_{\mathrm{RB}\left(k\right)}^{\mathrm{Sector}\left(j\right)}-\underset{i=1}{\overset{I}{\mathrm{\Σ}}}{H}_{i,\mathrm{RB}\left(k\right)}{H}_{i,\mathrm{RB}\left(k\right)}^H)/\mathrm{RxNum}$

Wherein,

Trace is Matrix Calculating mark operator;

The total interference that is subject at RB (k) for Sector (j) and the autocorrelation matrix of noise;

For Sector (j) RB (k) be subject to from this base station under the interference of other two the sector UE except the service sector and the autocorrelation matrix of noise in three sectors; I=2;

RxNum represents the reception antenna number;

Step S204, to three all terminals to be scheduled of sector in the base station proportionally fair scheduling algorithm carry out prioritization, determine the at first terminal of scheduling, for example be the UE (i) of Sector2;

Step S205 in conjunction with the transmitting power of UE (i), estimates the SINR value that UE (i) can obtain on each idling-resource piece RB (k), be assumed to be SINR _{UE (i), RB (k)}

${\mathrm{SINR}}_{\mathrm{UE}\left(i\right),\mathrm{RB}\left(k\right)}=H_{\mathrm{RB}\left(k\right)}^H{\mathrm{Rnn}}^{-1}{H}_{\mathrm{RB}\left(k\right)}=H_{\mathrm{RB}\left(k\right)}^H{({{\mathrm{\δ}}^2}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}2}I+\mathrm{\Σ}{H}_{j,\mathrm{RB}\left(k\right)}{H}_{j,\mathrm{RB}\left(k\right)}^H)}^{-1}{H}_{\mathrm{RB}\left(k\right)}$

Step S206 is with the SINR of UE (i) on each RB _{UE (i), RB (k)}Descending ordering, and corresponding RB call number is stored in TmpSchd _UE11In;

Step S207 is from TmpSchd _{UE (i)}First index of middle taking-up is assumed to be RB (k), determines whether RB (k) resource is distributed to UE (i) according to step S108 and S109;

Step S208 judges at first whether UE (i) is interior ring terminal or far point edge termination, is then RB (k) resource to be distributed to UE (i), enters step S110, otherwise enters step S109;

Step S209, UE (i) is the near point edge termination, judging with other two sectors under the base station has not at the upper dispatch terminal of RB (k), does not have dispatch terminal then RB (k) resource to be distributed to UE (i); If have at least a sector to dispatch terminal at RB (k) with the sector under the base station, then need to consider that the introducing of UE (i) is for the impact of the spectrum efficiency of the terminal of having dispatched according to following step;

Because the co-channel interference that UE (i) produces, the SINR of the terminal of having dispatched on RB (k) can reduce, and supposes that terminal is the UE1 of Sector1, and the SINR that then UE1 is new is NewSINR _{UE1, RB (k)}

${\mathrm{NewSINR}}_{\mathrm{UE}1,\mathrm{RB}\left(k\right)}=H_{\mathrm{RB}\left(k\right)}^H{\mathrm{Rnn}}^{-1}{H}_{\mathrm{RB}\left(k\right)}$

$=H_{\mathrm{RB}\left(k\right)}^H{({\stackrel{\‾}{\mathrm{Rnn}}}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}1}+H_{\mathrm{UE}\left(i\right),\mathrm{RB}\left(k\right)}{H}_{\mathrm{UE}\left(i\right),\mathrm{RB}\left(k\right)}^H)}^{-1}{H}_{\mathrm{RB}\left(k\right)}$

Wherein,

Be the Rnn value that UE1 calculates when not being subject to the co-channel interference of UE (i) generation, wherein may comprise other with the co-channel interference of the UE of distribution.H _{RB (k)}Expression equivalent channel coefficient value;

The original SINR of UE1 is SINR on RB (k) _{UE1, RB (k)}

UE1 is upper because the existence of UE (i) causes the variation delta SE of overall spectral efficiency at RB (k) _UE1

${\mathrm{\ΔSE}}_{\mathrm{UE}1}=\frac{\log (1+{\mathrm{SINR}}_{\mathrm{UE}1,\mathrm{RB}\left(k\right)})-\log (1+\mathrm{New}{\mathrm{SINR}}_{\mathrm{UE}1,\mathrm{RB}\left(k\right)})}{\log (1+{\mathrm{SINR}}_{\mathrm{UE}1,\mathrm{RB}\left(k\right)})}$

As Δ SE _UE1During less than or equal to a given threshold value, then RB (k) resource is distributed to UE (i), then execution in step S210;

As Δ SE _UE1During greater than a given threshold value, then with RB (k) from TmpSchd _{UE (i)}Delete in the set, and return execution in step S207; If the Δ SE on all RB (k) _UE1All greater than a given threshold value, then this terminal can't be dispatched, and changes step S211 over to;

Step S210 behind the successful scheduling resource block RB of UE (i) (k), upgrades the Rnn value of other sectors on RB (k), that is:

${\stackrel{\‾}{\mathrm{Rnn}}}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}1}={\stackrel{\‾}{\mathrm{Rnn}}}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}1}+H_{\mathrm{UE}\left(i\right),\mathrm{RB}\left(k\right)}{H}_{\mathrm{UE}\left(i\right),\mathrm{RB}\left(k\right)}^H;$

Step S211 deletes UE (i) in the scheduling set, if treat dispatch terminal set non-NULL, then return execution in step S104; If treat the dispatch terminal set for empty, then need to judge whether fully scheduling of all RB, if dispatch fully then execution in step S213, otherwise execution in step S212;

Step S212 finds the UE of the upper scheduling of RB of the RB index front and back that does not have scheduling, judges whether this UE is fit to use this RB resource.The suitable UE that then distributes to the front of the UE of front, the suitable UE that then distributes to the back of the UE of back, if all suitable, then according to both priority of proportional fair scheduling comparison, which which priority higher position gives; Judge RB whether the method for suitable UE have a variety ofly, the simplest method then is to judge whether UE needs more scheduling resource.

Step S213 finishes scheduling and withdraws from the scheduling circulation.

The present embodiment is only considered the situation that coordinate three sectors in the base station, and algorithm is succinct, is easy to realize.

Embodiment 3

According to the embodiment of the invention, provide in a kind of ofdm system, be positioned at method and flow process that the interference coordination scheduling is carried out in three sectors under the same base station, in conjunction with Fig. 4, the specific implementation step comprises:

Step S401, sector coordinated scheduling update cycle T1 in the system configuration baseband pool.T1 does not upgrade the schedule information of three sectors under the same base station in the cycle; After the scheduling update cycle arrives, execution in step S402;

Step S402, each serving sector Sector (j), (j=1,2,3) (j represents the sector to add up the disturbed condition Rnn (j, k) that is subject on each frequency subband in the dispatching cycle from the UE outside three sectors under this base station, k represents frequency subband), because the instantaneous disturbance channel outside these base station three sets of sectors can't obtain, so Rnn (j, k) can only adopt the mean value of long-time statistical

Come approximate, and because the instantaneous disturbance channel outside three sectors can't obtain in this base station, and the instantaneous disturbance channel of three sectors can obtain in this base station, so can deduct the approximate Rnn that obtains outside the baseband pool sets of sectors of instantaneous disturbance Rnn_inner within this base station section set with measuring total Rnn_Total;

${{\mathrm{\δ}}^2}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}\left(j\right)}=\mathrm{trace}({\mathrm{Rnn}}_{\mathrm{RB}\left(k\right)}^{\mathrm{Sector}\left(j\right)}-\underset{i=1}{\overset{I}{\mathrm{\Σ}}}{H}_{i,\mathrm{RB}\left(k\right)}{H}_{i,\mathrm{RB}\left(k\right)}^H)/\mathrm{RxNum}$

Wherein,

Trace is Matrix Calculating mark operator;

The total interference that is subject at RB (k) for Sector (j) and the autocorrelation matrix of noise;

For Sector (j) RB (k) be subject to from this base station under the interference of other two the sector UE except the service sector and the autocorrelation matrix of noise in three sectors; I=2;

RxNum represents the reception antenna number;

Step S404, to three all terminals to be scheduled of sector in the base station proportionally fair scheduling algorithm carry out prioritization, determine the at first terminal of scheduling, for example be the UE (i) of Sector2;

Step S405 in conjunction with the transmitting power of UE (i), estimates the SINR value that UE (i) can obtain on each idling-resource piece RB (k), be assumed to be SINR _{UE (i), RB (k)}

${\mathrm{SINR}}_{\mathrm{UE}\left(i\right),\mathrm{RB}\left(k\right)}=H_{\mathrm{RB}\left(k\right)}^H{\mathrm{Rnn}}^{-1}{H}_{\mathrm{RB}\left(k\right)}=H_{\mathrm{RB}\left(k\right)}^H{({{\mathrm{\δ}}^2}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}2}I+\mathrm{\Σ}{H}_{j,\mathrm{RB}\left(k\right)}{H}_{j,\mathrm{RB}\left(k\right)}^H)}^{-1}{H}_{\mathrm{RB}\left(k\right)}$

Step S406 is with the SINR of UE (i) on each RB _{UE (i), RB (k)}Descending ordering, and corresponding RB call number is stored in TmpSchd _UE11In;

Step S407 is from TmpSchd _{UE (i)}First index of middle taking-up is assumed to be RB (k), and judging with other two sectors under the base station has not at the upper dispatch terminal of RB (k), does not have dispatch terminal then RB (k) resource to be distributed to UE (i); If have at least a sector to dispatch terminal at RB (k) with the sector under the base station, then need to consider that the introducing of UE (i) is for the impact of the spectrum efficiency of the terminal of having dispatched according to following step;

Because the co-channel interference that UE (i) produces, the SINR of the terminal of having dispatched on RB (k) can reduce, and supposes that terminal is the UE1 of Sector1, and the SINR that then UE1 is new is NewSINR _{UE1, RB (k)}:

${\mathrm{NewSINR}}_{\mathrm{UE}1,\mathrm{RB}\left(k\right)}=H_{\mathrm{RB}\left(k\right)}^H{\mathrm{Rnn}}^{-1}{H}_{\mathrm{RB}\left(k\right)}$

$=H_{\mathrm{RB}\left(k\right)}^H{({\stackrel{\‾}{\mathrm{Rnn}}}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}1}+H_{\mathrm{UE}\left(i\right),\mathrm{RB}\left(k\right)}{H}_{\mathrm{UE}\left(i\right),\mathrm{RB}\left(k\right)}^H)}^{-1}{H}_{\mathrm{RB}\left(k\right)}$

Wherein,

Be the Rnn value that UE1 calculates when not being subject to the co-channel interference of UE (i) generation, wherein may comprise other with the co-channel interference of the UE of distribution.H _{RB (k)}Expression equivalent channel coefficient value;

The original SINR of UE1 is SINR on RB (k) _{UE1, RB (k)}

UE1 is upper because the existence of UE (i) causes the variation delta SE of overall spectral efficiency at RB (k) _UE1

${\mathrm{\ΔSE}}_{\mathrm{UE}1}=\frac{\log (1+{\mathrm{SINR}}_{\mathrm{UE}1,\mathrm{RB}\left(k\right)})-\log (1+\mathrm{New}{\mathrm{SINR}}_{\mathrm{UE}1,\mathrm{RB}\left(k\right)})}{\log (1+{\mathrm{SINR}}_{\mathrm{UE}1,\mathrm{RB}\left(k\right)})}$

As Δ SE _UE1During less than or equal to a given threshold value, then RB (k) resource is distributed to UE (i), then execution in step S408;

As Δ SE _UE1During greater than a given threshold value, then with RB (k) from TmpSchd _{UE (i)}Delete in the set, and return execution in step S407; If the Δ SE on all RB (k) _UE1All greater than a given threshold value, then this terminal can't be dispatched, and changes step S409 over to;

Step S408 behind the successful scheduling resource block RB of UE (i) (k), upgrades the Rnn value of other sectors on RB (k), namely

${\stackrel{\‾}{\mathrm{Rnn}}}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}1}={\stackrel{\‾}{\mathrm{Rnn}}}_{I_{\mathrm{RB}\left(k\right)}}^{\mathrm{Sector}1}+H_{\mathrm{UE}\left(i\right),\mathrm{RB}\left(k\right)}{H}_{\mathrm{UE}\left(i\right),\mathrm{RB}\left(k\right)}^H;$

Step S409 delete UE (i) in the dispatch terminal set after, judges when treating dispatch terminal set non-NULL, then returns execution in step S404; If treat the dispatch terminal set for empty, then need to judge whether fully scheduling of all RB, if dispatch fully then execution in step S411, otherwise execution in step S410;

Step S410 finds the UE of the upper scheduling of RB of the RB index front and back that does not have scheduling, judges whether this UE is fit to use this RB resource.The suitable UE that then distributes to the front of the UE of front, the suitable UE that then distributes to the back of the UE of back, if all suitable, then according to both priority of proportional fair scheduling comparison, which which priority higher position gives; Judge RB whether the method for suitable UE have a variety ofly, the simplest method then is to judge whether UE needs more scheduling resource.

Step S411 finishes scheduling and withdraws from the scheduling circulation.

The present embodiment is only considered the situation that coordinate three sectors in the base station, also terminal is not classified, and algorithm is succinct, is easy to realize.Can estimate interference by this method, guaranteeing that the high terminal distribution of priority is under the prerequisite of best resource blocks, as much as possible so that disturb each other stronger terminal distribution to not identical frequency subband resource between the cooperation sector, to reach interference coordination, improve the purpose of the spectrum efficiency of overall spectral efficiency and edge termination.

Need to prove, as a kind of possibility, each configuration information in the above-mentioned example can carry out default configuration by the agreement regulation, perhaps is configured rear informing base station by upper layer network element.Described upper layer network element can be trunking, base station controller, access service network, connection service network, core net gateway etc.

The scheduling of resource of up (transmitting terminal is terminal, and receiving terminal is the base station) communication system that in addition, above-mentioned Multi-instance all is applicable to and descending (transmitting terminal is the base station, and receiving terminal is terminal) communication system.

The embodiment of the invention also provides a kind of many sectors coordinated scheduling device, as shown in Figure 5, comprising:

The dispatching priority determining unit, the dispatching priority for determining baseband pool terminal to be scheduled takes out terminal to be scheduled successively according to described dispatching priority;

The Resource Block sequencing unit, the signal quality value that is used for obtaining at each idling-resource piece according to the terminal of the current taking-up of dispatching priority determining unit is to the idling-resource block sequencing;

Scheduling unit, be used for from getting well to differing from, taking out the idling-resource piece according to signal quality in turn by the ordering of Resource Block sequencing unit, judge whether to satisfy default distributive condition, if satisfy, then this idling-resource piece is distributed to the terminal of the current taking-up of described dispatching priority determining unit, otherwise, continue to take out next idling-resource piece and judge, until for the terminal distribution of the current taking-up of described dispatching priority determining unit idling-resource piece or judge that all idling-resource pieces all can't distribute to the terminal of the current taking-up of described dispatching priority determining unit.

Wherein, described scheduling unit judges whether to satisfy default distributive condition according to following mode:

Judge other sectors dispatch terminal on the idling-resource piece of current taking-up whether under the same baseband pool, if do not have, then satisfy default distributive condition;

If other sectors of at least one under the same baseband pool are dispatch terminal on the idling-resource piece of current taking-up, then:

Judgement the idling-resource piece of described current taking-up is distributed to current when treating dispatch terminal, whether whether the interference that this is current treats each terminal that dispatch terminal is dispatched at the idling-resource piece of current taking-up each sector under the described baseband pool descend less than or equal to the signal quality thresholding less than or equal to the signal quality that interference threshold or interference cause, if, then satisfy described default distributive condition, otherwise, do not satisfy described default distributive condition.

Wherein, described scheduling unit judges whether to satisfy default distributive condition according to following mode:

If the current dispatch terminal for the treatment of is without the cooperation sector, perhaps, the current dispatch terminal for the treatment of has the cooperation sector, and current cooperation sector for the treatment of dispatch terminal dispatch terminal on the idling-resource piece of current taking-up not, then satisfies default distributive condition;

If there is dispatch terminal on the idling-resource piece of current taking-up the current cooperation sector of dispatch terminal for the treatment of, then judge the idling-resource piece of described current taking-up is distributed to described current when treating dispatch terminal, whether whether the interference that this is current treats each terminal that dispatch terminal is dispatched at the idling-resource piece of current taking-up its sector that respectively cooperates descend less than or equal to the signal quality thresholding less than or equal to the signal quality that interference threshold or interference cause, if, then satisfy described default distributive condition, otherwise, do not satisfy described default distributive condition.

Wherein, described device also comprises the terminal type determining unit, be used for terminal feedback channel quality indicator (CQI) corresponding modulating-coding collection MCS and given MCS threshold ratio, if less than described MCS threshold value, then be the far point edge termination; Otherwise, add up the Reference Signal Received Power RSRQ metrical information that arrives adjacent sectors of this terminal to report and the RSRQ metrical information that this terminal arrives described serving sector, difference more between the two and given measurement difference threshold, if less than described measurement difference threshold, then this adjacent sectors is the cooperation sector of this terminal; The sector if this terminal does not cooperate, then this terminal is interior ring terminal, otherwise is the near point edge termination;

Current when treating that dispatch terminal is far point edge termination or interior ring terminal, without the cooperation sector; Current when treating that dispatch terminal is the near point edge termination, the cooperation sector is arranged.

Wherein, described scheduling unit judges that as follows the current signal quality for the treatment of that dispatch terminal causes the interference of the terminal of dispatching at the idling-resource piece of current taking-up descends whether less than or equal to the signal quality thresholding:

Calculating is distributing the idling-resource piece of described current taking-up and is not distributing to described when treating dispatch terminal, the new signal mass value of the terminal of dispatching on the idling-resource piece of described current taking-up and original signal mass value, obtain the overall spectrum variable quantity according to this new signal mass value and original signal mass value, with this overall spectrum variable quantity and default overall spectrum variable quantity threshold ratio, if less than or equal to described overall spectrum variable quantity threshold value, then disturb the signal quality that causes to descend less than or equal to the signal quality thresholding, otherwise, disturb the signal quality that causes to descend greater than the signal quality thresholding.

In sum, provide in a kind of distributing antenna system by the embodiment of the invention, the scheme of coordinated scheduling is carried out in many sectors, realizes interference coordination between the sector under the prerequisite of sector flow and fairness not increasing extra signaling consumption and guarantee as far as possible, improves the flow of edge termination.And the technical scheme of the embodiment of the invention, is easy to realize and promote to have stronger industrial usability all less than revising for the existing network architecture and existing flow process etc.

Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (12)

1. sector coordinated scheduling method more than a kind is characterized in that, comprising:

Take out successively the dispatch terminal for the treatment of in the baseband pool according to dispatching priority, each of taking out treated dispatch terminal, carry out following operation:

Treat that by current signal quality value that dispatch terminal obtains at each idling-resource piece is to the idling-resource block sequencing, from getting well to differing from, take out the idling-resource piece by signal quality in turn, judge whether to satisfy default distributive condition, if satisfy, then this idling-resource piece is distributed to the described current dispatch terminal for the treatment of, otherwise, continue to take out next idling-resource piece and judge, until distributed the idling-resource piece or judged that all idling-resource pieces all can't distribute to the described current dispatch terminal for the treatment of for the described current dispatch terminal for the treatment of.

2. the method for claim 1 is characterized in that, describedly judges whether to satisfy default distributive condition and comprises:

Judge other sectors dispatch terminal on the idling-resource piece of current taking-up whether under the same baseband pool, if do not have, then satisfy default distributive condition;

If other sectors of at least one under the same baseband pool are dispatch terminal on the idling-resource piece of current taking-up, then:

Judgement the idling-resource piece of described current taking-up is distributed to current when treating dispatch terminal, whether whether the interference that this is current treats each terminal that dispatch terminal is dispatched at the idling-resource piece of current taking-up each sector under the described baseband pool descend less than or equal to the signal quality thresholding less than or equal to the signal quality that interference threshold or interference cause, if, then satisfy described default distributive condition, otherwise, do not satisfy described default distributive condition.

3. the method for claim 1 is characterized in that, describedly judges whether to satisfy default distributive condition and comprises:

If the current dispatch terminal for the treatment of is without the cooperation sector, perhaps, the current dispatch terminal for the treatment of has the cooperation sector, and current cooperation sector for the treatment of dispatch terminal dispatch terminal on the idling-resource piece of current taking-up not, then satisfies default distributive condition;

If there is dispatch terminal on the idling-resource piece of current taking-up the current cooperation sector of dispatch terminal for the treatment of, then judge the idling-resource piece of described current taking-up is distributed to described current when treating dispatch terminal, whether whether the interference that this is current treats each terminal that dispatch terminal is dispatched at the idling-resource piece of current taking-up its sector that respectively cooperates descend less than or equal to the signal quality thresholding less than or equal to the signal quality that interference threshold or interference cause, if, then satisfy described default distributive condition, otherwise, do not satisfy described default distributive condition.

4. method as claimed in claim 3 is characterized in that, described method also comprises:

If the serving sector of terminal less than described MCS threshold value, then is the far point edge termination with the channel quality indicator (CQI) of terminal feedback corresponding modulating-coding collection MCS and given MCS threshold ratio;

Otherwise, the serving sector of this terminal is added up the Reference Signal Received Power RSRQ metrical information that arrives adjacent sectors of this terminal to report and the RSRQ metrical information that this terminal arrives described serving sector, difference more between the two and given measurement difference threshold, if less than described measurement difference threshold, then this adjacent sectors is the cooperation sector of this terminal; The sector if this terminal does not cooperate, then this terminal is interior ring terminal, otherwise is the near point edge termination;

When terminal is far point edge termination or interior ring terminal, without the cooperation sector, when terminal is the near point edge termination, the cooperation sector is arranged.

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

Judge that as follows the current signal quality for the treatment of that dispatch terminal causes the interference of the terminal of dispatching at the idling-resource piece of current taking-up descends whether less than or equal to the signal quality thresholding:

Calculating is distributing the idling-resource piece of described current taking-up and is not distributing to described when treating dispatch terminal, the new signal mass value of the terminal of dispatching on the idling-resource piece of described current taking-up and original signal mass value, obtain the overall spectrum variable quantity according to this new signal mass value and original signal mass value, with this overall spectrum variable quantity and default overall spectrum variable quantity threshold ratio, if less than or equal to described overall spectrum variable quantity threshold value, then disturb the signal quality that causes to descend less than or equal to the signal quality thresholding, otherwise, disturb the signal quality that causes to descend greater than the signal quality thresholding.

6. method as claimed in claim 5 is characterized in that, described signal quality value is Signal to Interference plus Noise Ratio SINR value;

Describedly obtain the overall spectrum variable quantity according to this new signal mass value and original signal mass value and comprise:

${\mathrm{\ΔSE}}_{\mathrm{UE}}=\frac{\log (1+{\mathrm{SINR}}_{\mathrm{UE}})-\log (1+\mathrm{New}{\mathrm{SINR}}_{\mathrm{UE}})}{\log (1+{\mathrm{SINR}}_{\mathrm{UE}})}$

Wherein, SINR _UEBe original signal mass value, NewSINR _UEBe the new signal mass value, Δ SE _UEBe the overall spectral efficiency variable quantity.

7. the device of sector coordinated scheduling more than a kind is characterized in that, comprising:

The dispatching priority determining unit is used for the dispatching priority that definite baseband pool is treated dispatch terminal, takes out successively according to described dispatching priority and treats dispatch terminal;

The Resource Block sequencing unit is used for treating that according to the current taking-up of dispatching priority determining unit signal quality value that dispatch terminal obtains at each idling-resource piece is to the idling-resource block sequencing;

Scheduling unit, be used for from getting well to differing from, taking out the idling-resource piece according to signal quality in turn by the ordering of Resource Block sequencing unit, judge whether to satisfy default distributive condition, if satisfy, then this idling-resource piece is distributed to the dispatch terminal for the treatment of of the current taking-up of described dispatching priority determining unit, otherwise, continue to take out next idling-resource piece and judge, until distributed the idling-resource piece or judged that all idling-resource pieces all can't distribute to the dispatch terminal for the treatment of of the current taking-up of described dispatching priority determining unit for the dispatch terminal for the treatment of of the current taking-up of described dispatching priority determining unit.

8. device as claimed in claim 7 is characterized in that, described scheduling unit judges whether to satisfy default distributive condition according to following mode:

Judge other sectors dispatch terminal on the idling-resource piece of current taking-up whether under the same baseband pool, if do not have, then satisfy default distributive condition;

If other sectors of at least one under the same baseband pool are dispatch terminal on the idling-resource piece of current taking-up, then:

Judgement the idling-resource piece of described current taking-up is distributed to current when treating dispatch terminal, whether whether the interference that this is current treats each terminal that dispatch terminal is dispatched at the idling-resource piece of current taking-up each sector under the described baseband pool descend less than or equal to the signal quality thresholding less than or equal to the signal quality that interference threshold or interference cause, if, then satisfy described default distributive condition, otherwise, do not satisfy described default distributive condition.

9. device as claimed in claim 7 is characterized in that, described scheduling unit judges whether to satisfy default distributive condition according to following mode:

If the current dispatch terminal for the treatment of is without the cooperation sector, perhaps, the current dispatch terminal for the treatment of has the cooperation sector, and current cooperation sector for the treatment of dispatch terminal dispatch terminal on the idling-resource piece of current taking-up not, then satisfies default distributive condition;

If there is dispatch terminal on the idling-resource piece of current taking-up the current cooperation sector of dispatch terminal for the treatment of, then judge the idling-resource piece of described current taking-up is distributed to described current when treating dispatch terminal, whether whether the interference that this is current treats each terminal that dispatch terminal is dispatched at the idling-resource piece of current taking-up its sector that respectively cooperates descend less than or equal to the signal quality thresholding less than or equal to the signal quality that interference threshold or interference cause, if, then satisfy described default distributive condition, otherwise, do not satisfy described default distributive condition.

10. device as claimed in claim 9, it is characterized in that, described device also comprises the terminal type determining unit, is used for terminal feedback channel quality indicator (CQI) corresponding modulating-coding collection MCS and given MCS threshold ratio, if less than described MCS threshold value, it then is the far point edge termination; Otherwise, add up the Reference Signal Received Power RSRQ metrical information that arrives adjacent sectors of this terminal to report and the RSRQ metrical information that this terminal arrives described serving sector, difference more between the two and given measurement difference threshold, if less than described measurement difference threshold, then this adjacent sectors is the cooperation sector of this terminal; The sector if this terminal does not cooperate, then this terminal is interior ring terminal, otherwise is the near point edge termination;

Current when treating that dispatch terminal is far point edge termination or interior ring terminal, without the cooperation sector; Current when treating that dispatch terminal is the near point edge termination, the cooperation sector is arranged.

11. device is characterized in that as claimed in claim 8 or 9,

Described scheduling unit judges that as follows the current signal quality for the treatment of that dispatch terminal causes the interference of the terminal of dispatching at the idling-resource piece of current taking-up descends whether less than or equal to the signal quality thresholding:

Calculating is distributing the idling-resource piece of described current taking-up and is not distributing to described when treating dispatch terminal, the new signal mass value of the terminal of dispatching on the idling-resource piece of described current taking-up and original signal mass value, obtain the overall spectrum variable quantity according to this new signal mass value and original signal mass value, with this overall spectrum variable quantity and default overall spectrum variable quantity threshold ratio, if less than or equal to described overall spectrum variable quantity threshold value, then disturb the signal quality that causes to descend less than or equal to the signal quality thresholding, otherwise, disturb the signal quality that causes to descend greater than the signal quality thresholding.

12. device as claimed in claim 11 is characterized in that, described signal quality value is Signal to Interference plus Noise Ratio SINR value;

Described scheduling unit obtains the overall spectrum variable quantity according to this new signal mass value and original signal mass value and comprises:

${\mathrm{\ΔSE}}_{\mathrm{UE}}=\frac{\log (1+{\mathrm{SINR}}_{\mathrm{UE}})-\log (1+\mathrm{New}{\mathrm{SINR}}_{\mathrm{UE}})}{\log (1+{\mathrm{SINR}}_{\mathrm{UE}})}$

Wherein, SINR _UEBe original signal mass value, NewSINR _UEBe the new signal mass value, Δ SE _UEBe the overall spectral efficiency variable quantity.

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