CN102307371B - Resource scheduling method and device in long term evolution system - Google Patents

Abstract

The invention discloses a resource scheduling method and device in a long term evolution system, which can improve the transmission efficiency of a PDSCH (physical downlink shared channel), optimize downlink scheduling transmission and promote the throughput of the downlink system and the number of online users. The resource scheduling method in the long term evolution system provided by the embodiment of the invention comprises the following steps: calculating an equivalent PDCCH (physical downlink control channel) data pilot frequency ratio of the current UE (user equipment) according to a CFI (common flash interface) initial value; calculating the CCE (control channel element) number Lk of the PDCCH required by the current UE according to the equivalent PDCCH data pilot frequency ratio and the channel quality information of the UE; if all the PDCCH CCE candidate sets of the current UE do not have available PDCCH CCE resources for distribution of the current UE after traversal, carrying out the following power adaptation operation: updating the Lk of the current UE to Lk', traversing all the PDCCH CCE candidate sets of the current UE, and selecting UEj from other schedulable UEs if no allocable PDCCH CCE resources exist; updating the PDCCH CCE number Lj required by the UEj to Lj', releasing the resources occupied in the current PDCCH CCE candidate set, and updating the PDCCH CCE candidate set of the current UE.

Description

Resource regulating method in long evolving system and equipment

Technical field

The present invention relates to wireless communication technology field, especially relate to resource regulating method and equipment in a kind of long evolving system.

Background technology

Long Term Evolution (Long Term Evolution, LTE) during scheduled transmission, need to pass through the distribution of Physical Downlink Control Channel (Physical Downlink Control CHannel, PDCCH) indication related resource, Modulation and Coding Scheme (MCS) etc.

At present in the PDCCH transmitting procedure of LTE, first by the base station (eNB) of evolution, a plurality of UE are dispatched, then, UE to the good resource of scheduling preassignment, calculate initial control channel unit (the Control Channel Element of PDCCH separately, CCE) position and the CCE number that takies, last, on corresponding CCE, send the PDCCH of each UE.

Yet, also there are many problems in existing this PDCCH transmission method, for example, prior art is only considered according to Physical Downlink Shared Channel (Physical Downlink Shared CHannel, PDSCH) Output rusults of scheduling judgement carries out corresponding PDCCH transmission, according to the sign of UE (ID) and the subframe numbers that uses, adopts Hash (Hash) function to come randomization to shine upon the original position that obtains CCE.The mode of this randomization mapping easily causes that PDCCH's between different UEs is congested, the CCE original position being obtained by different UEs ID and subframe numbers randomization mapping may be identical, and the CCE resource that is positioned at same position can not be distributed to two UE simultaneously, cause the PDCCH of different UEs to bump, cause the waste of PDCCH and PDSCH resource, affected downlink system throughput.

Summary of the invention

The embodiment of the present invention provides resource regulating method and the equipment in a kind of long evolving system, can improve the efficiency of transmission of PDSCH, optimizes descending scheduling transmission, has promoted throughput and online user's quantity of downlink system.

For achieving the above object, the technical scheme of the embodiment of the present invention is achieved in that

The embodiment of the present invention provides the resource regulating method in a kind of long evolving system, and described method comprises:

Obtain the initial value of CFI, and according to the equivalent PDCCH data pilot ratio of described CFI calculation of initial value current user equipment UE;

According to described equivalent PDCCH data pilot ratio, in conjunction with the channel quality information of UE, calculate the required PDCCH control channel unit CCE quantity L of current UE _k;

If the first PDCCH CCE Candidate Set of current UE is occupied, travel through the every other PDCCH CCE Candidate Set of current UE, judge in other PDCCH CCE Candidate Sets whether have L _kindividual idle CCE resource if exist, for current UE is distributed PDCCH CCE resource, and sends the PDCCH of current UE on this PDCCH CCE, if do not exist, carries out following power adaptive operation:

Upgrade the L of described current UE _kfor L _k', all PDCCH CCE Candidate Sets of traversal current UE, judge whether to exist L _k' individual idle CCE resource, if exist, for current UE is distributed PDCCH CCE resource, and recalculates the equivalent PDCCH data pilot ratio of current UE, if do not exist, in schedulable other UE, chooses UEj, by the required PDCCH CCE quantity L of UEj _jbe updated to L _j', the resource in the PDCCHCCE Candidate Set of the current UE that release UEj is shared, upgrades the PDCCH CCE Candidate Set of current UE, and whether has L in the PDCCH CCE Candidate Set of the current UE after judgement renewal _k' individual idle CCE resource, if exist, distributes PDCCH CCE resource for current UE, sends the PDCCH of current UE, and recalculate the equivalent PDCCH data pilot ratio of current UE and UEj on this PDCCHCCE, if do not exist, abandons the scheduling of resource to current UE.

The embodiment of the present invention also provides the equipment of the scheduling of resource in a kind of long evolving system, and described equipment comprises:

Equivalent data pilot tone, than computing unit, is indicated the initial value of CFI for obtaining control format, and according to the Equivalent Physical down control channel PDCCH data pilot ratio of described CFI calculation of initial value current user equipment UE;

CCE quantity computing unit, for according to described equivalent PDCCH data pilot ratio, in conjunction with the channel quality information of UE, calculates the required PDCCH control channel unit CCE quantity L of current UE _k;

Link circuit self-adapting unit, if occupied for the first PDCCH CCE Candidate Set of current UE, travels through the every other PDCCH CCE Candidate Set of current UE, judges in other PDCCH CCE Candidate Sets whether have L _kindividual idle CCE resource if exist, for current UE is distributed PDCCH CCE resource, and sends the PDCCH of current UE on this PDCCH CCE, if do not exist, and starting power adaptive unit;

Described power adaptive unit, for upgrading the L of described current UE _kfor L _k', all PDCCH CCE Candidate Sets of traversal current UE, judge whether to exist L _k' individual idle CCE resource, if exist, for current UE is distributed PDCCH CCE resource, and recalculates the equivalent PDCCH data pilot ratio of current UE, if do not exist, in schedulable other UE, chooses UEj, by the required PDCCH CCE quantity L of UEj _jbe updated to L _j', the resource in the PDCCH CCE Candidate Set of the current UE that release UEj is shared, upgrades the PDCCH CCE Candidate Set of current UE, and whether has L in the PDCCH CCE Candidate Set of the current UE after judgement renewal _k' individual idle CCE resource, if exist, for current UE is distributed PDCCH CCE resource, on this PDCCH CCE, send the PDCCH of current UE, and recalculate the equivalent PDCCH data pilot ratio of current UE and UEj, if do not exist, abandon the scheduling of resource to current UE.

From above-mentioned, the technical scheme of the embodiment of the present invention, when controlling PDCCH transmission, is introduced parameters C FI, according to CFI, calculates equivalent PDCCH data pilot ratio, and utilize equivalent PDCCH data pilot than the required PDCCH CCE quantity that obtains UE, to carry out accurately and effectively the scheduling of PDCCH CCE.

This programme is on the basis of time domain, frequency domain resource scheduling, the mode of combining the link circuit self-adapting and the power adaptive that have adopted PDCCH, a kind of novel PDCCH CCE Conflicts management strategy is provided, solved the PDCCH of different UEs in prior art the problem of bringing when congested has occurred, can improve PDCCH resource utilization, reduce the PDCCH collision of different UEs, thereby improve the efficiency of transmission of PDSCH, optimize descending scheduling transmission, promoted throughput and online user's quantity of downlink system.

Accompanying drawing explanation

Resource regulating method schematic flow sheet in a kind of long evolving system that Fig. 1 provides for the embodiment of the present invention one;

Resource regulating method schematic flow sheet in a kind of long evolving system that Fig. 2 provides for the embodiment of the present invention two;

A kind of method flow schematic diagram of revising CFI numerical value before carrying out power adaptive operation that Fig. 3 provides for the embodiment of the present invention four;

Scheduling of resource device structure schematic diagram in a kind of long evolving system that Fig. 4 provides for the embodiment of the present invention seven.

Embodiment

Below in conjunction with accompanying drawing of the present invention, technical scheme of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based 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.

The present invention, when carrying out scheduling of resource, combines link circuit self-adapting and the power adaptive of considering PDCCH, has introduced the processing that each UE PDCCH power is adjusted, and effectively to utilize CCE and power resource, reduces CCE conflict.

embodiment mono-

The major technique design of this programme is: after link circuit self-adapting is adjusted, when CCE resource still exists conflict, first reduce the required CCE number of current UE (or being referred to as this UE) increasing power simultaneously, judge whether to meet the requirement that resource is distributed; If do not meet, reduce after the required CCE number of other UE, again judge whether to meet the requirement that this UE resource is distributed; If still do not meet and continue to carry out successively CCE number and power adjustment according to the order of " other other UE of this UE-of UE-of this UE-".

This programme adopts the above-mentioned power replacing to adjust mode, and the mode that does not adopt the repeatedly CCE number of " only this UE " and power to adjust, come the main cause of optimized allocation of resources to be: if only adjust the CCE number of this UE, power excursion compensation can be very large, this UE EPRE and average EPRE have big difference, impact on performance is unstable, and easily exceeds the power dynamics scope that system limits.

And adopt the order of " other other UE of this UE-of UE-of this UE-" of this programme to adjust, and can make as much as possible power change steadily, avoid larger peak power.

Resource regulating method in a kind of long evolving system that the present embodiment provides, comprises following processing:

11: carry out TDPS/FDPS/SDPS scheduling.

In this step according to time domain grouping scheduling (Time Domain Packet Scheduling, TDPS), frequency domain packet scheduling (Frequency Domain Packet Scheduling, FDPS) or spatial domain packet scheduling (Spacial Domain Packet Scheduling, SDPS) carry out scheduling of resource.For example, eNB chooses the UE that can dispatch according to available resource, is the Physical Resource Block (Physical Resource Block, PRB) of these UE preassignment PDSCH use; And, according to Hash function, calculate the original position of the PDCCH CCE that can dispatch UE etc.

12: obtain the initial value of control format indication (Control Format Indicator, CFI), and according to Equivalent Physical down control channel (PDCCH) the data pilot ratio of described CFI calculation of initial value current user equipment (UE).

Further, the mode of obtaining CFI initial value at least comprises following four kinds:

1) according to PHICH parameter and downlink system bandwidth, calculate respectively PDCCH CCE number under optional different CFI values

i represents the value of CFI; The number of all CCE that calculating distributes for UE in TDPS/FDPS/SDPS scheduling

and, described in relatively

with

value, confirm the initial value of CFI;

2) under optional different CFI values, calculate respectively the number that can dispatch UE

calculate under t subframe, in TDPS/FDPS/SDPS scheduling, the number of the UE that can simultaneously dispatch

described in relatively

with

value, confirm the initial value of CFI;

3) initial value using predetermined numerical value as CFI, described predetermined numerical value is 2.

4) statistics is under scheduled time window, and under optional different CFI values, each radio frames on average can be dispatched the number of UE obtain the PDCCH CCE resource utilization η in described time window _cce, described η _ccefor the number of PDCCH CCE that can effectively distribute and the ratio of the number of total PDCCH CCE that system can provide; According to community, always activate online user's number calculate effectively conversion dispatched users number

and, according to described η _ccewith

value, and fissipation factor α _cceconfirm the initial value of CFI.

The pilot tone of calculating in above-mentioned steps 12 is than being a kind of PDCCH pilot tone ratio of equivalence, in controlling the process of PDCCH transmission, this pilot tone ratio can be indicated the pilot tone ratio of corresponding UE PDCCH under different orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol.

13: according to described equivalent PDCCH data pilot ratio, in conjunction with the channel quality information of UE, calculate required PDCCH control channel unit (Control Channel Element, CCE) the quantity L of current UE _k, wherein, k represents the label of UE.At this moment the L calculating _kfor the number of the required initial CCE of current UE, also can be expressed as L _k=L _{ini, k}.

14: if the first PDCCH CCE Candidate Set of current UE is occupied, confirm that the PDCCH generation of different UEs is congested, perform step 15, otherwise, be that UE distributes PDCCH CCE resource.

Each UE disposes some PDCCH CCE Candidate Sets, the corresponding Candidate Set of original position of the PDCCH CCE that above-mentioned first PDCCH CCE Candidate Set is UE, for example, when the original position of PDCCH CCE is that logic label is 4 CCE, and in a Candidate Set, the number of CCE is set at 4 o'clock, by label 4, the CCE to label 7 forms first PDCCH CCE Candidate Set, and according to the next Candidate Set of this first PDCCH CCE Candidate Set of the order of Candidate Set, by label 8, the CCE to label 11 forms.Above-mentioned other PDCCH CCE Candidate Sets are in all PDCCH CCE Candidate Sets of configuring of a UE, the Candidate Set except first PDCCH CCE Candidate Set.

15: the every other PDCCH CCE Candidate Set of traversal current UE.

16: judge in other PDCCH CCE Candidate Sets whether have L _kindividual idle CCE resource if exist, for current UE is distributed PDCCH CCE resource, and sends the PDCCH of current UE on this PDCCH CCE, if do not exist, abandons the scheduling of resource to corresponding UE in the UE of resource contention.If do not exist, carry out following power adaptive operation:

17: the L that upgrades described current UE _kfor L _k', all PDCCH CCE Candidate Sets of traversal current UE.

18: judge in all PDCCH CCE Candidate Sets of current UE whether have L _k' individual idle CCE resource, if exist, for current UE is distributed PDCCH CCE resource, and recalculates the equivalent PDCCH data pilot ratio of current UE, if do not exist, and execution step 19;

19: in schedulable other UE, choose other UE, as UEj, j represents the label of UE.By the required PDCCH CCE quantity L of UEj _jbe updated to L _j, the resource in the PDCCH CCE Candidate Set of the current UE that release UEj is shared, the PDCCHCCE Candidate Set of renewal current UE.

20: in the PDCCH CCE Candidate Set of the current UE after judgement is upgraded, whether have L _k' individual idle CCE resource, if exist, for current UE is distributed PDCCH CCE resource, and on this PDCCH CCE, send the PDCCH of current UE, recalculate the equivalent PDCCH data pilot ratio of current UE and UEj, if do not exist, abandon the scheduling of resource to current UE.

Further, step 20 abandon the scheduling of resource of current UE before, can also repeatedly carry out adjustment and the integration of power, at this moment, said method also comprises:

Upgrade the L of described current UE _k' be L _k", all PDCCH CCE Candidate Sets of traversal current UE, judge whether to exist L _k" individual idle CCE resource, if exist, for current UE is distributed PDCCH CCE resource, and recalculates the equivalent PDCCH data pilot ratio of current UE, if do not exist, in schedulable other UE, chooses UEp, by the required PDCCH CCE quantity L of UEp _pbe updated to L _p', the resource in the PDCCH CCE Candidate Set of the current UE that release UEp is shared, upgrades the PDCCH CCE Candidate Set of current UE, and whether has L in the PDCCH CCE Candidate Set of the current UE after judgement renewal _k" individual idle CCE resource, if exist, is that current UE is distributed PDCCH CCE resource; and on this PDCCH CCE, send the PDCCH of current UE; and recalculate the equivalent PDCCH data pilot ratio of current UE and UEp, if do not exist, abandon the scheduling of resource to current UE.Wherein, the label that p is UE.

Further, the mode of the required PDCCH CCE quantity of above-mentioned renewal UE is as follows:

L _k′＝L _k/2，L _j′＝L _j/2，L _k″＝L _k′/2，L _p′＝L _p/2；

According to following at least one order, in the PDCCH of current UE CCE Candidate Set, be assigned with and in other UE under the CCE taking, chosen above-mentioned UEj or UEp:

According to the number of the shared CCE of UE order from big to small, if other UE shared CCE number maximum in the PDCCH of current UE CCE Candidate Set is, from taking the UE of 8 CCE, start to choose described UEj or UEp at 8 o'clock; Or, according to putting in order of each PDCCH CCE Candidate Set of current UE.From taking other UE of the first Candidate Set of current UE, start to choose described UEj or UEp.

From above-mentioned, the technical scheme of the embodiment of the present invention, when controlling PDCCH transmission, is introduced parameters C FI, according to CFI, calculates equivalent PDCCH data pilot ratio, and utilize equivalent PDCCH data pilot than the required PDCCH CCE quantity that obtains UE, to carry out accurately and effectively the scheduling of PDCCH CCE.

This programme is on the basis of time domain, frequency domain resource scheduling, the mode of combining the link circuit self-adapting and the power adaptive that have adopted PDCCH, a kind of novel PDCCH CCE Conflicts management strategy is provided, solved the PDCCH of different UEs in prior art the problem of bringing when congested has occurred, can improve PDCCH resource utilization, reduce the PDCCH collision of different UEs, thereby improve the efficiency of transmission of PDSCH, optimize descending scheduling transmission, promoted throughput and online user's quantity of downlink system.

embodiment bis-

In the present embodiment two, in the power adaptive operation that adopts embodiment mono-after to UE, required PDCCH CCE number upgrades, upgrade the equivalent PDCCH data pilot ratio of corresponding UE, to guarantee that the power sum of each UE under same OFDM symbol port p is not more than the maximum power that system is allowed simultaneously.

In embodiment bis-, first, carry out TDPS/FDPS/SDPS scheduling, secondly, carry out the operation of obtaining of CFI initial value, the operation of these steps is referring to above-mentioned steps 11 and 12.Again, referring to Fig. 2, continue to carry out following operation:

1,, according to the initial value of CFI, calculate equivalent PDCCH data pilot ratio;

2,, according to equivalent PDCCH data pilot ratio, in conjunction with the channel quality information of UE, calculate the required PDCCH control channel unit CCE quantity L of current UE _k.

Above-mentioned channel quality information mainly comprises the effective value SINR of channel quality _{pDCCH, k}.

This step can specifically comprise following processing:

According to link simulation result, can obtain the demodulation threshold (desired value that BLER=1% order) of different Downlink Control Information (DCI) carryings (payload) under different CCE numbers, according to the effective value SINR of the channel quality of UE _{pDCCH, k}, in conjunction with initial equivalent PDCCH data pilot, compare ρ _{pDCCH_ini, k}, calculate the needed CCE number of UE k L _k, L _kfor initial CCE number value, L _k=L _{ini, k}.

The effective value SINR of above-mentioned channel quality _{pDCCH, k}=SINR fiducial value+ρ _{pDCCH, k}

The channel quality indication (Channel Quality Indicator, CQI) that SINR fiducial value can report according to UE calculates.

3, according to Hash function, calculate the initial CCE position of each UE, and distribute successively PDCCH CCE resource according to predefined procedure, described predefined procedure comprises following a kind of order:

Schedulable UE is distributed to PDCCH CCE resource successively according to the TDPS priority orders of UE; Or,

Schedulable UE is distributed to PDCCH CCE resource successively according to the order of the original position of the PDCCH CCE of each UE obtaining; Or,

Schedulable UE is distributed to PDCCH CCE resource successively according to the determined priority orders of quality of service QoS attribute of each UE, as for thering is assurance bit rate (Guaranteed Bit Rate, GBR) the UE priority allocation PDCCH CCE resource or under lower-delay attribute business, and the UE with (Best Effort, the BE) service attribute of doing one's best in the end carries out the distribution of resource.

If the first PDCCH CCE Candidate Set resource of 4 UE k (being current UE) is occupied, confirm resource contention occurs, travel through other PDCCH CCE Candidate Set of UE k; If have unappropriated assignable CCE Candidate Set resource, distributed to UE k;

If 5 have traveled through the CCE Candidate Set of UE k, still do not meet L _kthe available CCE resource of size, execution step 5A.

5A, renewal L _k'=L _k/ 2, again travel through the PDCCH CCE Candidate Set resource that current UE can be used; If meet L _k' demand, distributes it, and according to link simulation result, calculates CCE number demand demodulation threshold after changing and the difference Δ sinr of actual channel quality _k, record the corresponding new equivalent data pilot tone of UE k CCE than being ρ _{pDCCH, k}=ρ _{pDCCH_ini, k}+ Δ sinr _k.

If 5B has traveled through the CCE Candidate Set of UE k, still do not meet L _kthe available CCE resource of ' size; In the CCE of UE k Candidate Set, be assigned with in other UE under the CCE taking, choose a UEj, to this UEj execution step 5C, carry out the adjustment of CCE resource.The order of adjusting can be according to the size of CCE number (as carried out from taking the UE that 8CCE starts), also can be according to the order of CCE Candidate Set.

5C: resource adjustment is as follows: it is L that other UE j has taken CCE number _j, make L _j'=L _j/ 2; Then upgrade the interior effectively available CCE resource of CCE Candidate Set of UE k, judge whether to meet the demand of UE k; If meet L _k' demand, distributes it, and according to link simulation result, calculates CCE number demand demodulation threshold after changing and the difference Δ sinr of actual channel quality _k, record the corresponding new equivalent data pilot tone of CCE of UE k than being ρ _{pDCCH, k}=ρ _{pDCCH_ini, k}+ Δ sinr _k; In addition, record the CCE Resources allocation that UE j is new, calculate equally CCE number demand demodulation threshold after changing and the difference Δ sinr of actual channel quality of UE j _j, record the corresponding new equivalent data pilot tone of CCE of UE j than being ρ _{pDCCH, j}=ρ _{pDCCH_ini, j}+ Δ sinr _j.

Further, when transmitting (Tx) power is always limited to dynamic range index large or small, the power adjustment in step 5A and 5C need be satisfied with

if do not meet this restriction, do not think that adjustment does not satisfy the demands, and does not carry out power adjustment.Wherein,

represent the restriction of transmitting power under port p, P _rSthe power that represents public guide frequency.

Can repeatedly carry out adjustment and the integration of power by constantly changing this UE and the required CCE number of other UE, at this moment, said method also comprises:

Upgrade the L of described current UE _k' be L _k", all PDCCH CCE Candidate Sets of traversal current UE, judge whether to exist L _k" individual idle CCE resource, if exist, distributes PDCCH CCE resource for current UE, if do not exist, in schedulable other UE, chooses UEp, by the required PDCCH CCE quantity L of UEp _pbe updated to L _p', the resource in the PDCCH CCE Candidate Set of the current UE that release UEp is shared, upgrades the PDCCH CCE Candidate Set of current UE, and whether has L in the PDCCH CCE Candidate Set of the current UE after judgement renewal _k" individual idle CCE resource.

5D: if to after other UE implements resource integration in the CCE Candidate Set of UE k, still cannot meet the demand of the CCE number of current UE; Judge L _kthe number of times having changed after the 5th step, if lack and 2 times, continues to proceed to 5A and processes; If changed 2 times, stop UE k resource consolidation, abandon the scheduling of UEk, discharge its preallocated PRB resource, then upgrade available CCE resource.

In step 5D, added L _kchanging the restriction of 2 times, is mainly that the PDCCH power dynamics scope of considering RAN4 is limited in [6,4] dB, L _kvariation be directly presented as 2 times of variations of code rate, in order to guarantee L _kchange the excursion of caused demand SINR in allowed limits, avoid peak power and average power to occur relatively large deviation, guarantee the stability of system, this programme adopts L _kchange the restriction of 2 times.

6, by being pressed as above 2-5D step process by each UE of preassignment PRB resource, until all UE are disposed;

7, judge whether the PRB resource discharging and whether have available CCE resource;

If 8 PRB and CCE resource both have, proceed to the 9th step; If there is 1 not have or both do not have, proceed to the 11st step;

9, according to TDPS-FDPS criterion, carry out UE selection and resource distribution; If there is UE to select, proceed to the 10th step; When all UE are disposed, or can select without suitable UE time, proceed to the 11st step;

10, each UE to the new Resources allocation of the 9th step, carries out as above 2-6 step process equally; Be disposed and proceed to the 7th step;

11, scheduling resource is assigned, CCE number and position be assigned, the same initial value of CFI end value.

12, calculate and record that the PDCCH of each UE is multiplexing, each REG mapping position and number after interweaving: belong to the REG number of same UE, at the different OFDM symbols of CFI indication, be labeled as respectively as 0/1/2 time

each UE in step 12 is in above-mentioned scheduling process, the actual UE that can dispatch of the PDCCH CCE resource being assigned with.

13,, according to the value of CFI indication, each antenna port of each OFDM symbol is carried out respectively to gross power size and process;

14, carry out in the following manner the processing of watt level: calculate the power sum of all UE under same OFDM symbol port p,

$P_{\mathrm{real},\mathrm{SymIndex}}^{\left(p\right)}=\underset{k}{\mathrm{\Σ}}({\mathrm{\ρ}}_{\mathrm{SymIndex},\mathrm{PDCCH}}^{\left(p\right)}\·{\mathrm{\Δ}\sin r}_k\·{4N}_{\mathrm{SymIndex},k}^{\mathrm{REG}}\·P_{\mathrm{RS}})+2\·P_{\mathrm{RS}}^{\left(p\right)}\·N_{\mathrm{RB}}^{\mathrm{DL}}$

In above formula, parameter is all linear value, and k represents the label of UE, and p represents the index of antenna port, and SymIndex represents OFDM symbol,

represent the equivalent PDCCH pilot tone ratio under port p,

represent the REG number of UE k on SymIndex symbol, Δ sinr _kthe effective value that represents the channel quality of UE k,

the power that represents the public guide frequency under port p,

represent downlink bandwidth.

Judgement

with maximum allowable power relation, to be confirmed whether to meet power requirement, the code that the logical relation of judgement can be expressed as:

15, each UE being carried out to power judgement processes.

Whether the REG that judges UE meets the PDCCH Power Dynamic Range that system allows, if meet the current configuration that keeps this UE; If do not meet, carry out following processing:

When if the power of the REG of the UE calculating is less than the lower bound value of PDCCH Power Dynamic Range, increase the current configuration that the Δ sinr of this UE makes it meet the lower bound value of PDCCH Power Dynamic Range or keep this UE;

If when the power of the REG of the UE calculating is greater than the upper bound value of PDCCH Power Dynamic Range, the Δ sinr that reduces this UE makes it meet the upper bound value of PDCCH Power Dynamic Range.

Particularly, judge that whether the EPRE of each UE REG meets PDCCH Power Dynamic Range [6,4] the dB requirement of RAN4, comprises following two kinds of modes:

Mode one: do not consider the unavailable REG of PDCCH, and unallocated complete vacant REG,

Judgement

whether drop in [1/4,5/2] scope;

Mode two: consider the unavailable REG of PDCCH, and unallocated complete vacant REG, both RE add up to N _unused

Judgement

whether drop in [1/4,5/2] scope;

Wherein,

represent the subcarrier number comprising in a PRB, its value is 12.

Within if above formula calculated value drops on [1/4,5/2] scope, meet the PDCCH Power Dynamic Range that system allows, keep the parameter constant of UE k.

If above formula calculated value is less than lower bound value at 1/4 o'clock, increase Δ sinr _kmaking it meet above formula calculated value is 1/4; If above formula calculated value is greater than upper bound value at 5/2 o'clock, reduce Δ sinr _kmaking it meet above formula calculated value is 5/2;

Or, while being less than lower bound value for above formula calculated value, keep the parameter constant of UE k; The UE parameter that only above formula calculated value is greater than to upper bound value is adjusted.

When system loading is heavier, just can easier CCE collision conflict, at this moment after overpower and the adjustment of CCE number, unappropriated vacant REG seldom, the ratio that under large bandwidth, the unavailable REG of PDCCH accounts for is in addition also less, under this scene, according to a pair of each UE of mode, carry out power judgement processing and can access more satisfactory effect; And second mode goes for various situations, only calculate the RE number that reality effectively takies.Preferably, two couples of each UE of employing mode carry out power judgement to be processed.

Power to each UE of actual schedule is adjusted in the manner described above.

16, in order to reduce as far as possible the impact on other UE performance, in the 15th step, can add following restriction:

After the complete UE of every adjustment, all again judge whether if satisfy condition, other UE is no longer adjusted; If do not satisfy condition, according to adjustment, sequentially carry out the adjustment of next UE.

The sequencing of adjusting, can carry out according to the sequence of positions of the REG of UE; Also can consider the business demand of different UEs, according to the QoS attribute by UE, be determined sequentially and carry out, as the strict UE of QoS demand is adjusted as far as possible afterwards, and preferentially adjust as the PDCCH REG of BE business.

If after 17 all UE have adjusted, still have

can do following a kind of processing:

Mode one: the power of each RE of actual schedule UE is carried out to convergent-divergent, zoom factor $\mathrm{\η}=\frac{P_{\max }^{\left(p\right)}}{P_{\mathrm{real},\mathrm{SymIndex}}^{\left(p\right)}}.$

Mode two: abandon the scheduling to lowest priority UE, discharge its CCE and power resource, again proceed to the 15th step and process.The UE of lowest priority can be for having the UE of minimum TDPS priority.

(when Tx power is always limited to dynamic range index large or small, limited adjusting range in step 5A/5C during Modulating Power, the 15/16/17th step no longer needs to carry out; When Tx power does not reach maximum transmission power, in the time of can not being subject to dynamic range restriction, need to carry out the 15/16/17th step.)

From above-mentioned, the technical scheme of the embodiment of the present invention, when controlling PDCCH transmission, is introduced parameters C FI, according to CFI, calculates equivalent PDCCH data pilot ratio, and utilize equivalent PDCCH data pilot than the required PDCCH CCE quantity that obtains UE, to carry out accurately and effectively the scheduling of PDCCH CCE.

This programme is on the basis of time domain, frequency domain resource scheduling, the mode of combining the link circuit self-adapting and the power adaptive that have adopted PDCCH, a kind of novel PDCCH CCE Conflicts management strategy is provided, solved the PDCCH of different UEs in prior art the problem of bringing when congested has occurred, can improve PDCCH resource utilization, reduce the PDCCH collision of different UEs, thereby improve the efficiency of transmission of PDSCH, optimize descending scheduling transmission, promoted throughput and online user's quantity of downlink system.

embodiment tri-

In embodiment bis-, only to relating to the UE of CCE conflict, carried out power adjustment, at this moment, for not needing the UE that carries out CCE conflict adjustment to have power dissipation to a certain degree.

In order further to optimize the power of this part, improve the utilance of resource, in the scheme of the present embodiment, all schedulable UE are carried out to power adjustment, make the power of UE only meet demodulation threshold.

The main distinction of the processing mode of embodiment tri-and embodiment bis-is:

In above-mentioned steps 2, calculate the CCE number L of UE k _kafter, Modulating Power, makes its watt level can just meet its target requirement and does not cause waste simultaneously, and adjustment amount is:

${\mathrm{\Δ}\sin r}_k={\mathrm{SINR}}_{{t\arg \mathrm{et},\mathrm{CCEL}}_k}-{\mathrm{SINR}}_{\mathrm{PDCCH},k}$

Wherein, Δ sinr _krepresent adjustment amount, represent required destination channel quality, SINR _{pDCCH, k}the effective value that represents the channel quality of current UE.

embodiment tetra-

In the present embodiment, introduced the correcting process of CFI numerical value.In the process of scheduling of resource, while there is CCE conflict, the CFI initial value getting is revised or upgraded.This CFI correcting process can be carried out before power adaptive is processed, and also can after power adaptive is processed, carry out.

Before carrying out power adaptive operation (before the step 17 at embodiment mono-, or, before the step 5A of embodiment bis-), if there is not L in the PDCCH CCE Candidate Set of current UE _kindividual idle CCE resource, carries out CFI and revises operation; Or,

After carrying out power adaptive operation or in the process of power adaptive operation, if there is not L in the PDCCH CCE Candidate Set of current UE _kindividual idle CCE resource, carries out CFI and revises operation.For example, in the step 5D of embodiment bis-, if there is CCE conflict, and the CCE number of corresponding UE integrates the CCE demand that still cannot meet UE k after 2 times, upgrades CFI=CFI+1 (being limited to CFI maximum occurrences), then carries out the distribution of CCE resource.

Referring to Fig. 3, shown a kind of method flow schematic diagram of revising CFI numerical value before carrying out power adaptive operation, the method shown in Fig. 3 had added the operation of CFI numerical value correction before the step 17 of embodiment mono-, and particularly, described CFI revises operation and comprises:

Step 16a: whether the currency that judges CFI reaches maximum CFI numerical value.

Step 16b: if the currency of CFI is not the greatest measure of optional CFI, upgrade the currency of CFI, wherein, and in upgrading first, the initial value that the currency of CFI is CFI;

Step 16c: carry out, if step 12 in embodiment mono-is to the operation in 16, proceeding to step 17 after being finished, step 16c can comprise following processing:

By the CFI numerical value after upgrading, recalculated the equivalent PDCCH data pilot ratio of current UE, and than upgrading, obtain the required PDCCH CCE quantity L of current UE by the equivalent PDCCH data pilot recalculating _k';

All PDCCH CCE Candidate Sets of traversal current UE, judge whether to exist L _k' individual idle CCE resource, if exist, for current UE is distributed PDCCH CCE resource, and send the PDCCH of current UE on this PDCCH CCE, if do not exist, again upgrade the currency of CFI, when the currency of described CFI reaches the greatest measure of optional CFI, stop upgrading operation.

Above-mentioned CFI upgrades operation can be for adding 1 by the currency of CFI.

embodiment five

In the scheme of the present embodiment, provide a kind of real-time dynamic calculation PDCCH gross power, so that each UE PDCCH power is adjusted.

Main points than embodiment bis-explanation the present embodiment, are mainly, the present embodiment equivalent PDCCH data pilot in above-mentioned steps 1 compares the different disposal to each OFDM symbol while calculating.The present embodiment calculate equivalent PDCCH data pilot than time, can calculate in real time current P _pHICHnumerical value.Thereby can access data pilot ratio more accurately, further improve the efficiency that resource is distributed.

In each embodiment of the present invention, all relate to the calculating of PDCCH data pilot ratio, its concrete calculating comprises 4 kinds of optional options (Option) form:

Option 1: dynamically deduct in real time PCFICH/PHICH power, do not consider the unavailable REG of PDCCH

Option 1A: dynamically deduct in real time PCFICH/PHICH power, consider the unavailable REG of PDCCH

Option 2: distribute PCFICH/PHICH power pond, do not consider the unavailable REG of PDCCH

Option 2A: distribute PCFICH/PHICH power pond, consider the unavailable REG of PDCCH

Option 1 only take below as example, describe computational methods, other option repeats no more.

Option 1 time, the power adjustment according to power control algorithm to PHICH channel, the actual PCFICH/PHICH power that while dispatching, deduction calculates in real time at every turn; Wherein, PCFICH fixedly accounts for 4RGE, and its transmitting power size needs consideration all standing, and size is relatively fixing; And PHICH is because the UE to different feeds back, need to carry out power control separately based on UE level.

Because PHICH finally adopts map unit, snap to REG size, and under regular circulation prefix (Cycle Prefix, CP) and expansion CP, the processing of PHICH group number and map unit is variant, therefore need calculate respectively.

Under different parameter configuration, be calculated as follows, wherein,

represent the OFDM symbolic number that PHICH takies, 1/2Tx represents that the transmitting antenna adopting is 1 or 2, and 4Tx represents that the transmitting antenna adopting is 4:

Conventional CP:

1、Normal?duration，1/2Tx，

${\mathrm{\ρ}}_{0,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},0}^{\left(p\right)}-2\·P_{\mathrm{RS}}^{\left(p\right)}\·N_{\mathrm{RB}}^{\mathrm{DL}}-P_{\mathrm{PCFICH}}^{\left(p\right)}-P_{\mathrm{PHICH}}^{\left(p\right)}}{4\·(2\·N_{\mathrm{RB}}^{\mathrm{DL}}-3\·m_i\·N_{\mathrm{PHICH}}^{\mathrm{group}}-4)\·P_{\mathrm{RS}}};$ ${\mathrm{\ρ}}_{1,\mathrm{PDCCH}}^{\left(p\right)}={\mathrm{\ρ}}_{2,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},1}^{\left(p\right)}}{4\·3\·N_{\mathrm{RB}}^{\mathrm{DL}}\·P_{\mathrm{RS}}};$

${\mathrm{\ρ}}_{3,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},1}^{\left(p\right)}}{4\·3\·N_{\mathrm{RB}}^{\mathrm{DL}}\·P_{\mathrm{RS}}}$ (Normal CP may have ρ under 1.4MHz bandwidth _{3, PDCCH})

2、Normal?duration，4Tx，

${\mathrm{\ρ}}_{0,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},0}^{\left(p\right)}-2\·P_{\mathrm{RS}}^{\left(p\right)}\·N_{\mathrm{RB}}^{\mathrm{DL}}-P_{\mathrm{PCFICH}}^{\left(p\right)}-P_{\mathrm{PHICH}}^{\left(p\right)}}{4\·(2\·N_{\mathrm{RB}}^{\mathrm{DL}}-3\·m_i\·N_{\mathrm{PHICH}}^{\mathrm{group}}-4)\·P_{\mathrm{RS}}};$

${\mathrm{\ρ}}_{1,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},1}^{\left(p\right)}-2\·P_{\mathrm{RS}}^{\left(p\right)}\·N_{\mathrm{RB}}^{\mathrm{DL}}}{4\·2{\·N}_{\mathrm{RB}}^{\mathrm{DL}}\·P_{\mathrm{RS}}};$ ${\mathrm{\ρ}}_{2,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},2}^{\left(p\right)}}{4\·3\·N_{\mathrm{RB}}^{\mathrm{DL}}\·P_{\mathrm{RS}}};$

${\mathrm{\ρ}}_{3,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},3}^{\left(p\right)}}{4\·3\·N_{\mathrm{RB}}^{\mathrm{DL}}\·P_{\mathrm{RS}}}$ (Normal CP may have ρ under 1.4MHz bandwidth _{3, PDCCH})

3、Extended?duration，1/2Tx，

${\mathrm{\ρ}}_{2,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},2}^{\left(p\right)}}{4\·3\·N_{\mathrm{RB}}^{\mathrm{DL}}\·P_{\mathrm{RS}}};$ ${\mathrm{\ρ}}_{3,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},3}^{\left(p\right)}}{4\·3\·N_{\mathrm{RB}}^{\mathrm{DL}}\·P_{\mathrm{RS}}};$ (Normal CP, under 1.4MHz bandwidth)

4、Extended?duration，1/2Tx，

${\mathrm{\ρ}}_{0,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},0}^{\left(p\right)}-2\·P_{\mathrm{RS}}^{\left(p\right)}\·N_{\mathrm{RB}}^{\mathrm{DL}}-P_{\mathrm{PCFICH}}^{\left(p\right)}-P_{0,\mathrm{HICH}}^{\left(p\right)}}{4\·(2\·N_{\mathrm{RB}}^{\mathrm{DL}}-m_i\·N_{\mathrm{PHICH}}^{\mathrm{group}}-4)\·P_{\mathrm{RS}}};$

${\mathrm{\&rho;}}_{1,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},1}^{\left(p\right)}{-\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="HDA0000087727000000021.png"\; state="\{\{state\}\}">P</figure-callout>}}_{1,\mathrm{PHICH}}^{\left(p\right)}}{4\&CenterDot;(3\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-m_i\&CenterDot;N_{\mathrm{PHICH}}^{\mathrm{group}})\&CenterDot;P_{\mathrm{RS}}};$ ${\mathrm{\&rho;}}_{2,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},2}^{\left(p\right)}{-\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="HDA0000087727000000021.png"\; state="\{\{state\}\}">P</figure-callout>}}_{2,\mathrm{PHICH}}^{\left(p\right)}}{4\&CenterDot;(3\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-m_i\&CenterDot;N_{\mathrm{PHICH}}^{\mathrm{group}})\&CenterDot;P_{\mathrm{RS}}};$

${\mathrm{\&rho;}}_{3,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},3}^{\left(p\right)}}{4\&CenterDot;3\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}\&CenterDot;P_{\mathrm{RS}}};$ (Normal CP may have ρ under 1.4MHz bandwidth _{3, PDCCH})

5、Extended?duration，4Tx，

${\mathrm{\&rho;}}_{2,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},2}^{\left(p\right)}}{4\&CenterDot;3\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}\&CenterDot;P_{\mathrm{RS}}};$

${\mathrm{\&rho;}}_{3,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},3}^{\left(p\right)}}{4\&CenterDot;3\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}\&CenterDot;P_{\mathrm{RS}}};$ (Normal CP may have ρ under 1.4MHz bandwidth _{3, PDCCH})

6、Extended?duration，4Tx，

${\mathrm{\&rho;}}_{0,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},0}^{\left(p\right)}-2\&CenterDot;P_{\mathrm{RS}}^{\left(p\right)}\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-P_{\mathrm{PCFICH}}^{\left(p\right)}-P_{0,\mathrm{HICH}}^{\left(p\right)}}{4\&CenterDot;(2\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-m_i\&CenterDot;N_{\mathrm{PHICH}}^{\mathrm{group}}-4)\&CenterDot;P_{\mathrm{RS}}};$

${\mathrm{\&rho;}}_{1,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},1}^{\left(p\right)}-2\&CenterDot;P_{\mathrm{RS}}^{\left(p\right)}\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-{\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="HDA0000087727000000021.png"\; state="\{\{state\}\}">P</figure-callout>}}_{1,\mathrm{PHICH}}^{\left(p\right)}}{4\&CenterDot;(2\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-m_i\&CenterDot;N_{\mathrm{PHICH}}^{\mathrm{group}})\&CenterDot;P_{\mathrm{RS}}};$ ${\mathrm{\&rho;}}_{2,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},2}^{\left(p\right)}{-\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="HDA0000087727000000021.png"\; state="\{\{state\}\}">P</figure-callout>}}_{2,\mathrm{PHICH}}^{\left(p\right)}}{4\&CenterDot;(3\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-m_i\&CenterDot;N_{\mathrm{PHICH}}^{\mathrm{group}})\&CenterDot;P_{\mathrm{RS}}};$

(Normal CP may have ρ under 1.4MHz bandwidth _{3, PDCCH})

Expansion CP:

1、Normal?duration，1/2Tx，

${\mathrm{\&rho;}}_{0,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},0}^{\left(p\right)}-2\&CenterDot;P_{\mathrm{RS}}^{\left(p\right)}\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-P_{\mathrm{PCFICH}}^{\left(p\right)}-P_{\mathrm{PHICH}}^{\left(p\right)}}{4\&CenterDot;(2\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-\frac{3}{2}\&CenterDot;m_i\&CenterDot;N_{\mathrm{PHICH}}^{\mathrm{group}}-4)\&CenterDot;P_{\mathrm{RS}}};$

${\mathrm{\&rho;}}_{1,\mathrm{PDCCH}}^{\left(p\right)}={\mathrm{\&rho;}}_{2,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},1}^{\left(p\right)}}{4\&CenterDot;3\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}\&CenterDot;P_{\mathrm{RS}}};$

${\mathrm{\&rho;}}_{3,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},1}^{\left(p\right)}-2\&CenterDot;P_{\mathrm{RS}}^{\left(p\right)}\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}}{4\&CenterDot;2\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}\&CenterDot;P_{\mathrm{RS}}}$ (Extended CP, under 1.4MHz bandwidth)

2、Normal?duration，4Tx，

${\mathrm{\&rho;}}_{0,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},0}^{\left(p\right)}-2\&CenterDot;P_{\mathrm{RS}}^{\left(p\right)}\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-P_{\mathrm{PCFICH}}^{\left(p\right)}-P_{\mathrm{PHICH}}^{\left(p\right)}}{4\&CenterDot;(2\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-\frac{3}{2}\&CenterDot;m_i\&CenterDot;N_{\mathrm{PHICH}}^{\mathrm{group}}-4)\&CenterDot;P_{\mathrm{RS}}};$

${\mathrm{\&rho;}}_{1,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},1}^{\left(p\right)}-2\&CenterDot;P_{\mathrm{RS}}^{\left(p\right)}\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}}{4\&CenterDot;2\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}\&CenterDot;P_{\mathrm{RS}}};$ ${\mathrm{\&rho;}}_{2,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},2}^{\left(p\right)}}{4\&CenterDot;3\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}\&CenterDot;P_{\mathrm{RS}}};$

${\mathrm{\&rho;}}_{3,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},3}^{\left(p\right)}-2\&CenterDot;P_{\mathrm{RS}}^{\left(p\right)}\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}}{4\&CenterDot;2\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}\&CenterDot;P_{\mathrm{RS}}}$ (Extended CP, under 1.4MHz bandwidth)

3、Extended?duration，1/2Tx，

${\mathrm{\&rho;}}_{2,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},2}^{\left(p\right)}}{4\&CenterDot;3\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}\&CenterDot;P_{\mathrm{RS}}};$

${\mathrm{\&rho;}}_{3,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},3}^{\left(p\right)}-2\&CenterDot;P_{\mathrm{RS}}^{\left(p\right)}\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}}{4\&CenterDot;2\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}\&CenterDot;P_{\mathrm{RS}}}$ (Extended CP, under 1.4MHz bandwidth)

4、Extended?duration，1/2Tx，

${\mathrm{\&rho;}}_{0,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},0}^{\left(p\right)}-2\&CenterDot;P_{\mathrm{RS}}^{\left(p\right)}\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-P_{\mathrm{PCFICH}}^{\left(p\right)}-P_{0,\mathrm{HICH}}^{\left(p\right)}}{4\&CenterDot;(2\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-\frac{m_i\&CenterDot;N_{\mathrm{PHICH}}^{\mathrm{group}}}{2}-4)\&CenterDot;P_{\mathrm{RS}}}$

${\mathrm{\&rho;}}_{1,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},1}^{\left(p\right)}{-\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="HDA0000087727000000021.png"\; state="\{\{state\}\}">P</figure-callout>}}_{1,\mathrm{PHICH}}^{\left(p\right)}}{4\&CenterDot;(3\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-\frac{m_i\&CenterDot;N_{\mathrm{PHICH}}^{\mathrm{group}}}{2})\&CenterDot;P_{\mathrm{RS}}};$ ${\mathrm{\&rho;}}_{2,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},2}^{\left(p\right)}{-\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="HDA0000087727000000021.png"\; state="\{\{state\}\}">P</figure-callout>}}_{2,\mathrm{PHICH}}^{\left(p\right)}}{4\&CenterDot;(3\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-\frac{m_i\&CenterDot;N_{\mathrm{PHICH}}^{\mathrm{group}}}{2})\&CenterDot;P_{\mathrm{RS}}};$

${\mathrm{\&rho;}}_{3,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},3}^{\left(p\right)}-2\&CenterDot;P_{\mathrm{RS}}^{\left(p\right)}\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}}{4\&CenterDot;2\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}\&CenterDot;P_{\mathrm{RS}}}$ (Extended CP, under 1.4MHz bandwidth)

5、Extended?duration，4Tx，

${\mathrm{\&rho;}}_{2,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},2}^{\left(p\right)}}{4\&CenterDot;3\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}\&CenterDot;P_{\mathrm{RS}}};$

${\mathrm{\&rho;}}_{3,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},3}^{\left(p\right)}-2\&CenterDot;P_{\mathrm{RS}}^{\left(p\right)}\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}}{4\&CenterDot;2\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}\&CenterDot;P_{\mathrm{RS}}}$ (Extended CP, under 1.4MHz bandwidth)

6、Extended?duration，4Tx，

${\mathrm{\&rho;}}_{0,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},0}^{\left(p\right)}-2\&CenterDot;P_{\mathrm{RS}}^{\left(p\right)}\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-P_{\mathrm{PCFICH}}^{\left(p\right)}-P_{0,\mathrm{HICH}}^{\left(p\right)}}{4\&CenterDot;(2\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-\frac{m_i\&CenterDot;N_{\mathrm{PHICH}}^{\mathrm{group}}}{2}-4)\&CenterDot;P_{\mathrm{RS}}}$

${\mathrm{\&rho;}}_{1,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},1}^{\left(p\right)}-2\&CenterDot;P_{\mathrm{RS}}^{\left(p\right)}\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-{\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="HDA0000087727000000021.png"\; state="\{\{state\}\}">P</figure-callout>}}_{1,\mathrm{PHICH}}^{\left(p\right)}}{4\&CenterDot;(2\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-\frac{m_i\&CenterDot;N_{\mathrm{PHICH}}^{\mathrm{group}}}{2})\&CenterDot;P_{\mathrm{RS}}};$ ${\mathrm{\&rho;}}_{2,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},2}^{\left(p\right)}{-\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="HDA0000087727000000021.png"\; state="\{\{state\}\}">P</figure-callout>}}_{2,\mathrm{PHICH}}^{\left(p\right)}}{4\&CenterDot;(3\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}-\frac{m_i\&CenterDot;N_{\mathrm{PHICH}}^{\mathrm{group}}}{2})\&CenterDot;P_{\mathrm{RS}}};$

${\mathrm{\&rho;}}_{3,\mathrm{PDCCH}}^{\left(p\right)}=\frac{P_{\mathrm{real},3}^{\left(p\right)}-2\&CenterDot;P_{\mathrm{RS}}^{\left(p\right)}\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}}{4\&CenterDot;2\&CenterDot;N_{\mathrm{RB}}^{\mathrm{DL}}\&CenterDot;P_{\mathrm{RS}}};$ (Extended CP, under 1.4MHz bandwidth)

Note: because PHICH adopts dynamic power control technology, the ρ while dispatching at every turn _{0, PDCCH}, ρ _{1, PDCCH}, ρ _{2, PDCCH}, ρ _{3, PDCCH}dynamic change.

embodiment six

Consider that optimizing power and CCE divide timing, the equivalent PDCCH data pilot of each UE Practical Calculation is than relevant to the position of REG, and the position of REG is relevant with the position of the PDCCH of UE in CCE Candidate Set, in the present embodiment, in conjunction with CCE position calculation equivalence PDCCH data pilot, compare and carry out power adjustment, if CCE position changes, needing dynamic re-computation equivalent data pilot tone ratio and corresponding power to distribute.

Further, the present embodiment also can be adjusted the order of adjusting with power according to CFI, and this programme is further segmented.

The disposed of in its entirety flow process of the present embodiment scheme and the handling process of embodiment bis-have similarity, below mainly the distinctive points of the present embodiment and embodiment bis-is described, mainly comprise:

In above-mentioned steps 4, also comprise the steps the processing of 4A:

4A: in ergodic process, if there is a PDCCH CCE Candidate Set to distribute, according to the position of preassignment CCE, inquiry mapping pattern table, according to the different OFDM character positions of the final mapping of each REG, the data pilot that recalculates renewal compares ρ _{pDCCH, k}with the PDCCH channel quality SINR upgrading _{wide, k}, calculate at L _ktime demand demodulation threshold and actual channel quality difference Δ sinr _k, when recording UE k and distributing this CCE Candidate Set, corresponding new equivalent data pilot tone is than being ρ _{pDCCH, k}=ρ _{pDCCH, k}+ Δ sinr _k.

The present embodiment has been revised above-mentioned steps 5A, specific as follows:

5A: upgrade L _k'=L _k/ 2, again travel through available CCE Candidate Set resource; If meet L _k' demand, distributes it, same according to the position of preassignment CCE, and inquiry mapping pattern table, according to the different OFDM character positions of the final mapping of each REG, recalculates the PDCCH channel quality SINR of renewal _{wide, k}; And according to link simulation result, calculate CCE number demand demodulation threshold after changing and the difference Δ sinr of actual channel quality _k, record the corresponding new equivalent data pilot tone of UE k CCE than being ρ _{pDCCH, k}=ρ _{pDCCH, k}+ Δ sinr _k.

The present embodiment has been revised above-mentioned steps 5C, specific as follows:

5C: resource adjustment is as follows: it is L that other UE j has taken CCE number _j, make L _j'=L _j/ 2; Then upgrade the interior effectively available CCE resource of CCE Candidate Set of UE k, judge whether to meet the demand of UE k; If meet L _k' demand, distributes it, same according to the position of preassignment CCE, and inquiry mapping pattern table, according to the different OFDM character positions of the final mapping of each REG, recalculates the PDCCH channel quality SINR of renewal _{wide, k}; And according to link simulation result, calculate CCE number demand demodulation threshold after changing and the difference Δ sinr of actual channel quality _k, record the corresponding new equivalent data pilot tone of its CCE of UE k than being ρ _{pDCCH, k}=ρ _{pDCCH, k}+ Δ sinr _k; Record in addition the CCE Resources allocation that UE j is new, same according to the position of preassignment CCE, inquiry mapping pattern table, according to the different OFDM character positions of the final mapping of each REG, recalculates the PDCCH channel quality SINR of renewal _{wide, k}, CCE number demand demodulation threshold after changing and the difference Δ sinr of actual channel quality of calculating UE j _j, record the corresponding new equivalent data pilot tone of its CCE of UE j than being ρ _{pDCCH, j}=ρ _{pDCCH, j}+ Δ sinr _j.

In this programme the equivalent data pilot tone beguine of each UE factually in the CCE of border the OFDM character position of each REG mapping calculate, than adopting, the weighted average of community statistics is more accurate, thereby can carry out more accurately and effectively resource distribution.

embodiment seven

The present embodiment seven also provides the equipment of the scheduling of resource in a kind of long evolving system, and referring to Fig. 4, described equipment comprises:

Equivalent data pilot tone, than computing unit 41, is indicated the initial value of CFI for obtaining control format, and according to the Equivalent Physical down control channel PDCCH data pilot ratio of described CFI calculation of initial value current user equipment UE;

CCE quantity computing unit 42, for calculating the required PDCCH control channel unit CCE quantity L of current UE according to described equivalent PDCCH data pilot ratio _k;

Link circuit self-adapting unit 43, if occupied for the first PDCCH CCE Candidate Set of current UE, travels through the every other PDCCH CCE Candidate Set of current UE, judges in other PDCCH CCE Candidate Sets whether have L _kindividual idle CCE resource if exist, for current UE is distributed PDCCH CCE resource, and sends the PDCCH of current UE on this PDCCH CCE, if do not exist, and starting power adaptive unit 44;

Described power adaptive unit 44, for upgrading the L of described current UE _kfor L _k', all PDCCH CCE Candidate Sets of traversal current UE, judge whether to exist L _k' individual idle CCE resource, if exist, for current UE is distributed PDCCH CCE resource, and recalculates the equivalent PDCCH data pilot ratio of current UE, if do not exist, in schedulable other UE, chooses UEj, by the required PDCCH CCE quantity L of UEj _jbe updated to L _j', the resource in the PDCCH CCE Candidate Set of the current UE that release UEj is shared, upgrades the PDCCH CCE Candidate Set of current UE, and whether has L in the PDCCH CCE Candidate Set of the current UE after judgement renewal _k' individual idle CCE resource, if exist, for current UE is distributed PDCCH CCE resource, and on this PDCCH CCE, send the PDCCH of current UE, recalculate the equivalent PDCCH data pilot ratio of current UE and UEj, if do not exist, abandon the scheduling of resource to current UE.

In present device embodiment, the specific works mode of each unit can be participated in each embodiment of the method for the present invention.

From above-mentioned, the technical scheme of the embodiment of the present invention, when controlling PDCCH transmission, is introduced parameters C FI, according to CFI, calculates equivalent PDCCH data pilot ratio, and utilize equivalent PDCCH data pilot than the required PDCCH CCE quantity that obtains UE, to carry out accurately and effectively the scheduling of PDCCH CCE.

This programme is on the basis of time domain, frequency domain resource scheduling, the mode of combining the link circuit self-adapting and the power adaptive that have adopted PDCCH, a kind of novel PDCCH CCE Conflicts management strategy is provided, solved the PDCCH of different UEs in prior art the problem of bringing when congested has occurred, can improve PDCCH resource utilization, reduce the PDCCH collision of different UEs, thereby improve the efficiency of transmission of PDSCH, optimize descending scheduling transmission, promoted throughput and online user's quantity of downlink system.

The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.

Claims (9)

1. the resource regulating method in long evolving system, is characterized in that, described method comprises:

Obtain the initial value of control format indication CFI, and according to the Equivalent Physical down control channel PDCCH data pilot ratio of described CFI calculation of initial value current user equipment UE;

According to described equivalent PDCCH data pilot ratio, in conjunction with the channel quality information of UE, calculate the required PDCCH control channel unit CCE quantity L of current UE _k;

If the first PDCCH CCE Candidate Set of current UE is occupied, travel through the every other PDCCH CCE Candidate Set of current UE, judge in other PDCCH CCE Candidate Sets whether have L _kindividual idle CCE resource if exist, for current UE is distributed PDCCH CCE resource, and sends the PDCCH of current UE on this PDCCH CCE, if do not exist, carries out following power adaptive operation:

Upgrade the L of described current UE _kfor L _k', all PDCCH CCE Candidate Sets of traversal current UE, judge whether to exist L _k' individual idle CCE resource, if exist, for current UE is distributed PDCCH CCE resource, and recalculate the equivalent PDCCH data pilot ratio of current UE, if do not exist, in the PDCCH of schedulable current UE CCE Candidate Set, be assigned with in other UE under the CCE taking and chosen UEj, by the required PDCCH CCE quantity L of UEj _jbe updated to L _j', the resource in the PDCCH CCE Candidate Set of the current UE that release UEj is shared, upgrades the PDCCH CCE Candidate Set of current UE, and whether has L in the PDCCH CCE Candidate Set of the current UE after judgement renewal _k' individual idle CCE resource, if exist, for current UE is distributed PDCCH CCE resource, on this PDCCH CCE, send the PDCCH of current UE, and recalculate the equivalent PDCCH data pilot ratio of current UE and UEj, if do not exist, abandon the scheduling of resource to current UE.

2. method according to claim 1, is characterized in that,

In described power adaptive operation, before abandoning the scheduling of resource of current UE, described method also comprises:

Upgrade the L of described current UE _k' be L _kall PDCCH CCE Candidate Sets of ' ', traversal current UE, judge whether to exist L _kthe idle CCE resource of ' ' individual, if exist, for current UE is distributed PDCCH CCE resource, and recalculate the equivalent PDCCH data pilot ratio of current UE, if do not exist, in the PDCCH of schedulable current UE CCE Candidate Set, be assigned with in other UE under the CCE taking and chosen UEp, by the required PDCCHCCE quantity L of UEp _pbe updated to L _p', the resource in the PDCCH CCE Candidate Set of the current UE that release UEp is shared, upgrades the PDCCH CCE Candidate Set of current UE, and whether has L in the PDCCH CCE Candidate Set of the current UE after judgement renewal _kthe idle CCE resource of ' ' individual, if exist, for current UE is distributed PDCCH CCE resource, on this PDCCH CCE, send the PDCCH of current UE, and recalculate the equivalent PDCCH data pilot ratio of current UE and UEp, if do not exist, abandon the scheduling of resource to current UE.

3. method according to claim 2, is characterized in that,

The L of the described current UE of described renewal _kfor L _k', by the required PDCCH CCE quantity L of UEj _jbe updated to L _j', upgrade the L of described current UE _k' be L _k' ', and by the required PDCCH CCE quantity L of UEp _pbe updated to L _p' mode as follows:

L _k′＝L _k/2，L _j′＝L _j/2，L _k′′＝L _k′/2，L _p′＝L _p/2；

According to following at least one order, in the PDCCH of current UE CCE Candidate Set, be assigned with and in other UE under the CCE taking, chosen described UEj or UEp:

According to the number of the shared CCE of UE order from big to small; Or,

According to putting in order of each PDCCH CCE Candidate Set of current UE.

4. method according to claim 1 and 2, is characterized in that, described method also comprises:

After the scheduling of resource of schedulable all UE is finished, the UE to all actual schedule, according to the equivalent PDCCH data pilot ratio of UE, this calculates power sum under same OFDM symbol port p

Under arbitrary OFDM symbol, when

the maximum power that the system of being greater than allows

time, the power of the UE of actual schedule is adjusted;

The described equivalent PDCCH data pilot that recalculates corresponding UE is than specifically comprising:

According to link simulation result, calculate CCE number demand demodulation threshold after changing and the difference Δ sinr of actual channel quality, upgrade the corresponding new equivalent PDCCH data pilot of UE than old equivalent PDCCH data pilot ratio and Δ sinr sum for UE;

The described power to the UE of actual schedule is adjusted specifically and is comprised:

Whether the REG that judges UE meets the PDCCH Power Dynamic Range that system allows, if meet the current configuration that keeps this UE; If do not meet, carry out following processing:

When if the power of the REG of the UE calculating is less than the lower bound value of PDCCH Power Dynamic Range, increase the current configuration that the Δ sinr of this UE makes it meet the lower bound value of PDCCH Power Dynamic Range or keep this UE;

If when the power of the REG of the UE calculating is greater than the upper bound value of PDCCH Power Dynamic Range, the Δ sinr that reduces this UE makes it meet the upper bound value of PDCCH Power Dynamic Range.

5. method according to claim 4, is characterized in that,

The described power to the UE of actual schedule is adjusted specifically and is comprised:

Power to the UE of each actual schedule is adjusted; Or, after the complete UE of every adjustment, judgement

whether be not more than the maximum power that system allows

if so, finish adjusting operation, if not, according to adjustment, sequentially carry out the adjustment of next UE, described adjustment order determined by the sequence of positions of the REG of UE, or, by the service quality QoS attribute of UE, determined;

After the power of the UE of actual schedule is adjusted, described method also comprises:

If

still be greater than the maximum power that system allows

adopt at least one following processing mode:

Utilize zoom factor dwindle each RE power of each actual schedule UE, so that recalculate, obtain the maximum power that the system of being less than allows

or,

Abandon having in actual schedule UE the UE of minimum TDPS priority, discharge CCE and the power resource of this UE, so that recalculate, obtain

the maximum power that the system of being less than allows

6. method according to claim 1, is characterized in that, described according to the required PDCCH control channel unit CCE quantity L of described equivalent PDCCH data pilot ratio calculating current UE _kalso comprise:

Calculating the required PDCCH CCE quantity L of current UE _kafter, by following formula, adjust the power of current UE:

$\mathrm{\&Delta;}{\sin r}_k={\mathrm{SINR}}_{{t\arg \mathrm{et},\mathrm{CCEL}}_k}-{\mathrm{SINR}}_{\mathrm{PDCCH},k}$

Wherein, Δ sinr _krepresent adjustment amount,

represent required destination channel quality, SINR _{pDCCH, k}the effective value that represents the channel quality of current UE.

7. method according to claim 4, is characterized in that, described method also comprises:

For UE, distributing after PDCCH CCE resource at every turn, utilizing following mode to recalculate the equivalent PDCCH data pilot ratio of current UE:

According to the position of distributed PDCCH CCE, query mappings form mapping pattern table, the different OFDM character positions of each REG mapping obtaining according to inquiry, recalculate the equivalent PDCCH data pilot ratio of corresponding UE.

8. method according to claim 1, is characterized in that,

Before carrying out power adaptive operation, if there is not L in the PDCCH CCE Candidate Set of current UE _kindividual idle CCE resource, carries out CFI and revises operation; Or,

After carrying out power adaptive operation, if there is not L in the PDCCH CCE Candidate Set of current UE _kindividual idle CCE resource, carries out CFI and revises operation;

Described CFI revises operation and comprises:

If the currency of CFI is not the greatest measure of optional CFI, upgrade the currency of CFI, wherein, and in upgrading first, the initial value that the currency of CFI is CFI;

By the CFI numerical value after upgrading, recalculated the equivalent PDCCH data pilot ratio of current UE, and than upgrading, obtain the required PDCCH CCE quantity L of current UE by the equivalent PDCCH data pilot recalculating _k';

All PDCCH CCE Candidate Sets of traversal current UE, judge whether to exist L _k' individual idle CCE resource, if exist, for current UE is distributed PDCCH CCE resource, and send the PDCCH of current UE on this PDCCH CCE, if do not exist, again upgrade the currency of CFI, when the currency of described CFI reaches the greatest measure of optional CFI, stop upgrading operation.

9. the scheduling of resource equipment in long evolving system, is characterized in that, described equipment comprises:

Equivalent data pilot tone, than computing unit, is indicated the initial value of CFI for obtaining control format, and according to the Equivalent Physical down control channel PDCCH data pilot ratio of described CFI calculation of initial value current user equipment UE;

CCE quantity computing unit, for according to described equivalent PDCCH data pilot ratio, in conjunction with the channel quality information of UE, calculates the required PDCCH control channel unit CCE quantity L of current UE _k;

Link circuit self-adapting unit, if occupied for the first PDCCH CCE Candidate Set of current UE, travels through the every other PDCCH CCE Candidate Set of current UE, judges in other PDCCH CCE Candidate Sets whether have L _kindividual idle CCE resource if exist, for current UE is distributed PDCCH CCE resource, and sends the PDCCH of current UE on this PDCCH CCE, if do not exist, and starting power adaptive unit;

Described power adaptive unit, for upgrading the L of described current UE _kfor L _k', all PDCCH CCE Candidate Sets of traversal current UE, judge whether to exist L _k' individual idle CCE resource, if exist, for current UE is distributed PDCCH CCE resource, and recalculate the equivalent PDCCH data pilot ratio of current UE, if do not exist, in the PDCCH of schedulable current UE CCE Candidate Set, be assigned with in other UE under the CCE taking and chosen UEj, by the required PDCCH CCE quantity L of UEj _jbe updated to L _j', the resource in the PDCCH CCE Candidate Set of the current UE that release UEj is shared, upgrades the PDCCH CCE Candidate Set of current UE, and whether has L in the PDCCH CCE Candidate Set of the current UE after judgement renewal _k' individual idle CCE resource, if exist, for current UE is distributed PDCCH CCE resource, on this PDCCH CCE, send the PDCCH of current UE, and recalculate the equivalent PDCCH data pilot ratio of current UE and UEj, if do not exist, abandon the scheduling of resource to current UE.

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