CN102612094A - Method, base station and user equipment for determining control singling resource unit - Google Patents
Method, base station and user equipment for determining control singling resource unit Download PDFInfo
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- CN102612094A CN102612094A CN2012100960045A CN201210096004A CN102612094A CN 102612094 A CN102612094 A CN 102612094A CN 2012100960045 A CN2012100960045 A CN 2012100960045A CN 201210096004 A CN201210096004 A CN 201210096004A CN 102612094 A CN102612094 A CN 102612094A
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Abstract
The embodiment of the invention provides a method, a base station and user equipment for determining a control singling resource unit and relates to the field of communication, aiming at improving the resource utilization rate of a system by partitioning and determining a subunit occupied by an eCCE (Extensible Computational Chemistry Environment). The control singling resource unit determining method comprises the following steps: equally dividing a physical resource block pair according to a first preset number P on a frequency domain and partitioning the residual symbols according to a second preset number Q on a time domain through a base station, thereby obtaining M=P*Q subunits; determining one or more subunits occupied by each eCCE in M subunits; mapping the information born by each eCCE to a subunit occupied by such eCCE correspondingly; and transmitting the information born by the eCCEs to the user equipment through the subunits. The user equipment receives and obtains the information which is born by the eCCEs and transmitted by the base station, through the subunits according to the portioning and determining method same with that of the base station. The method, the base station and the user equipment are used for determining the control singling resource units.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of control signal resource unit and confirm method, base station and subscriber equipment.
Background technology
At Long Term Evolution (Long Term Evolution; Abbreviation LTE) in the transmission of Rel-8/9/10 communication system down link; The base station is that each subscriber equipment that is dispatched to sends a PDSCH (Physical Downlink Shared Channel like eNB (evolved Node Base, evolved base station) according to the result who dispatches; Physical Downlink Shared Channel) and corresponding PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel).
Wherein, PDSCH is carrying the data that eNB sends to scheduling user's set, and PDCCH is carrying in the territory schedule information of its corresponding PDSCH.Wherein PDCCH transmits in several symbols before subframe, and remaining symbol then is used for transmitting PDSCH.In a sub-frame, the PDCCH of all scheduling user's sets is together multiplexing, send in the PDCCH territory then, and PDSCH sends in the PDSCH territory.Each PDCCH is that (Control Channel Element CCE) forms in 1/2/4/8 control channel unit.
In the further evolution of LTE Rel-10 system; Owing to need to support MU-MIMO (Multiple User Multiple Input Multiple Output; The multi-user installation multiple-input and multiple-output) and multipoint cooperative (Co-ordinated Multi-Points; CoMP) improve the performance of system, and these technology make increases of scheduling user's set numbers simultaneously; But the finite capacity of PDCCH, limited a sub-frame can the scheduling user's set number number.So; Prior art strengthens PDCCH, and promptly going out a part of resource in original PDSCH area dividing, to transmit the PDCCH of enhancing be ePDCCH (enhance Physical Downlink Control Channel, strengthen Physical Downlink Control Channel); So just can improve the number of capacity and the while scheduling user's set of PDCCH; Wherein, ePDCCH is made up of eCCE (enhance Control Channel Element strengthens the control channel unit).
But owing to be for unit ePDCCH to be carried out scheduling of resource on the frequency domain resource of LTE with PRB pair (Physical Resources Block pair, Physical Resource Block to).Wherein ePDCCH can with resource be to remove PDCCH Physical Downlink Control Channel and/or PHICH and/or PCFICH and various frequency pilot sign RE (the Resource Element outside taking among each PRB pair; Resource Unit); And form the eCCE of ePDCCH in the prior art owing to receive the influence of various frequency pilot signs; Performance is comparatively unbalanced; And resource that ePDCCH takies usually appears greater than the required resource of actual transmissions information, and cause the comparatively serious wasting of resources, cause resource utilization ratio lower.
Summary of the invention
Embodiments of the invention provide a kind of control signal resource unit to confirm method, base station and subscriber equipment, can improve the resource utilization of system through dividing subelement.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand, confirm method, comprising through a kind of control signal resource unit:
On frequency domain, a Physical Resource Block is carried out five equilibrium to presetting number P by first; And remaining symbol was divided by the second preset number Q on time domain after said Physical Resource Block centering removed at least one the shared symbol among physical downlink control channel PDCCH, physical mixed automatic repeat requests indicating channel PHICH and the Physical Control Format Indicator Channel PCFICH, obtained the M=P*Q sub-cells;
Confirm one or more subelements that said Physical Resource Block takies in the M sub-cells last each enhancing control channel unit eCCE;
With said each eCCE loaded information correspondence mappings to said one or more subelements;
Send said each eCCE loaded information through said one or more subelements to subscriber equipment.
On the one hand, confirm method, comprising through a kind of control signal resource unit:
On frequency domain, a Physical Resource Block is carried out five equilibrium to presetting number P by first; And remaining symbol was divided by the second preset number Q on time domain after said Physical Resource Block centering removed at least one the shared symbol among physical downlink control channel PDCCH, physical mixed automatic repeat requests indicating channel PHICH and the Physical Control Format Indicator Channel PCFICH, obtained the M=P*Q sub-cells;
Confirm one or more subelements that said Physical Resource Block takies in the M sub-cells last each enhancing control channel unit eCCE;
Through on said one or more subelements, said each eCCE being received, to obtain said each eCCE loaded information.
On the other hand, a kind of base station is provided, comprises:
Division unit; Be used on frequency domain, a Physical Resource Block being carried out five equilibrium to presetting number P by first; And remaining symbol was divided by the second preset number Q on time domain after said Physical Resource Block centering removed at least one the shared symbol among physical downlink control channel PDCCH, physical mixed automatic repeat requests indicating channel PHICH and the Physical Control Format Indicator Channel PCFICH, obtained the M=P*Q sub-cells;
Confirm the unit, be used for one or more subelements of confirming that said Physical Resource Block takies in the M sub-cells last each enhancing control channel unit eCCE by said division unit division;
Map unit is used for one or more subelements that each eCCE loaded information correspondence mappings is confirmed to said definite unit;
Transmitting element is used for sending said each eCCE loaded information through one or more subelements of said map unit mapping to subscriber equipment.
On the other hand, a kind of subscriber equipment is provided, comprises:
Division unit; Be used on frequency domain, a Physical Resource Block being carried out five equilibrium to presetting number P by first; And remaining symbol was divided by the second preset number Q on time domain after said Physical Resource Block centering removed at least one the shared symbol among physical downlink control channel PDCCH, physical mixed automatic repeat requests indicating channel PHICH and the Physical Control Format Indicator Channel PCFICH, obtained the M=P*Q sub-cells;
Confirm the unit, be used for one or more subelements of confirming that said Physical Resource Block takies in the M sub-cells last each enhancing control channel unit eCCE by said division unit division;
Receiving element is used for through on said one or more subelements of confirming in said definite unit said each eCCE being received, to obtain said each eCCE loaded information.
Method, base station and subscriber equipment are confirmed in the control signal resource unit that the embodiment of the invention provides, the base station on the frequency domain with time domain on to Physical Resource Block to dividing, so that Physical Resource Block is to being divided into the M sub-cells; Confirm one or more subelements that Physical Resource Block takies last each eCCE; With each eCCE loaded information correspondence mappings to subelement; And pass through these subelements and send the eCCE loaded information to subscriber equipment; Subscriber equipment is also divided subelement according to identical division methods; And the subelement that takies according to each e-CCE to Physical Resource Block centering that confirms receives the eCCE loaded information, so, and can be through subelement each eCCE balancing performance of position assurance on time domain and frequency domain of confirming that eCCE takies; Can regulate the size of dividing eCCE according to current system requirements simultaneously; The eCCE that make to form ePDCCH a Physical Resource Block on the RE number that takies close with the demand of ePDCCH, reduce the wasting of resources, and then the raising resource utilization.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 confirms the method flow sketch map for the control signal resource unit that the embodiment of the invention provides;
The Physical Resource Block that Fig. 2 provides for the embodiment of the invention is to the mapping method sketch map;
Fig. 3 confirms the method flow sketch map for another control signal resource unit that the embodiment of the invention provides;
Fig. 4 confirms the method flow sketch map for the another control signal resource unit that the embodiment of the invention provides;
Another Physical Resource Block that Fig. 5 provides for the embodiment of the invention is to the mapping method sketch map;
The architecture of base station sketch map that Fig. 6 provides for the embodiment of the invention;
The user device architecture sketch map that Fig. 7 provides for the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The control channel resource transmission method that the embodiment of the invention provides, as shown in Figure 1, this method step comprises:
S101, base station are carried out five equilibrium to a PRB pair by the first preset number P on frequency domain; And on time domain, divide and obtain the M=P*Q sub-cells by the second preset number Q to removing among PDCCH, PHICH and the PCFICH behind at least one shared symbol remaining symbol; Wherein, " * " expression is multiplied each other.
Exemplary, a Physical Resource Block is right, i.e. a PRB pair (Physical Resources Block pair; Physical Resource Block to) on time domain, taken a sub-frame, a sub-frame comprises two time slots, and 7 OFDM (Orthogonal Frequency Division Multiplexing is arranged in each time slot; OFDM) symbol, PDCCH, PHICH (Physical Hybrid-Automatic Repeat-request Indicator Channel, the automatic repeat requests indicating channel of physical mixed) and PCFICH (Physical Control Format Indicator Channel; Physical Control Format Indicator Channel) at least one is in preceding m OFDM symbol of first time slot, to transmit in; M=0 wherein, 1,2; 3,4.On frequency domain, take 12 number of sub-carrier.Can the first preset number P in base station is set to can be by 12 integers of dividing exactly; As 2,3,4,6 etc., suppose that PDCCH has taken 2 OFDM symbols, the first preset number is 3; The base station has been divided into three equal parts with PRB pair on frequency domain; Can be carried by several eCCE according to ePDCCH in the current channel condition, the second preset number is set to Q=2, and a PRB pair has been divided into the M=3*2=6 sub-cells so.
One or more subelement that each multiplexing eCCE takies on the PRB pair is confirmed in S102, base station in the M sub-cells.
Need to prove, according to ePDCCH be carried on subelement that several eCCE or other channel condition confirm that eCCE takies be one, two or more, suppose that an eCCE carries an ePDCCH; And confirm that this eCCE takies two sub-cells, if P=3, Q=2; In the two one's share of expenses for a joint undertaking unit that the base station can be divided on time domain so, an optional sub-cells on frequency domain, every one's share of expenses for a joint undertaking unit comprises three sub-cells of dividing on the frequency domain on the time domain; As shown in Figure 2, altogether multiplexing three eCCE on the PRB pair 20, note is made eCCE1 respectively; ECCE2 and eCCE3, the PDCCH territory is like PDCCH and/or PHICH and/or PCFICH; On time domain, taken preceding two symbols, wherein, DMRS (Demodulation Reference Signal; Demodulation pilot frequency) 201 use antenna port 7 and/or antenna port 8 outputs, CRS (Cell-specific Reference Signal, district pilots signal) 202 uses antenna port 0～3 output; ECCE1 has taken second sub-cells on the frequency domain in three sub-cells of the preceding portion of time domain, in three sub-cells of the back portion of time domain, taken first subelement on the frequency domain; ECCE2 has taken the 3rd sub-cells on the frequency domain in three sub-cells of the preceding portion of time domain, in three sub-cells of the back portion of time domain, taken second sub-cells on the frequency domain; ECCE3 has taken first subelement on the frequency domain in three sub-cells of the preceding portion of time domain, in three sub-cells of the back portion of time domain, taken the 3rd sub-cells on the frequency domain.
It is worthy of note that Fig. 2 has just enumerated the example that a kind of each eCCE confirms to take two sub-cells, but does not do any qualification with this.
S103, base station with each eCCE loaded information correspondence mappings to one or more subelements.
The mode that the base station can take subelement according to eCCE shown in Figure 2 is mapped to the eCCE loaded information on the PRB pair; Also can be according to other mode; As according to there not being a CRS pilot tone, perhaps the PDCCH territory has taken other mapping modes under 3 different situations such as OFDM, and the eCCE loaded information is shone upon; Only give an example here, do not do any qualification with this.
S104, base station are sent each eCCE loaded information through one or more subelements to subscriber equipment.
Method is confirmed in the control signal resource unit that the embodiment of the invention provides, the base station on the frequency domain with time domain on to Physical Resource Block to dividing, so that Physical Resource Block is to being divided into the M sub-cells; Confirm one or more subelements that Physical Resource Block takies last each eCCE; With each eCCE loaded information correspondence mappings to subelement; And pass through these subelements and send the eCCE loaded information to subscriber equipment.So; Can guarantee each eCCE balancing performance through confirming the position of subelement on time domain and frequency domain that eCCE takies; Can regulate the size of dividing eCCE according to current system requirements simultaneously; The eCCE that make to form ePDCCH a Physical Resource Block on the RE number that takies close with the demand of ePDCCH, reduce the wasting of resources, and then the raising resource utilization.
Method is confirmed in the control signal resource unit that further embodiment of this invention provides, and as shown in Figure 3, this method step comprises:
S201, subscriber equipment carry out five equilibrium to a PRB pair by the first preset number P on frequency domain; And remaining symbol after removing the symbol that at least one item takies among PDCCH, PHICH and the PCFICH divided by the second preset number Q on time domain; Obtain the M=P*Q sub-cells; Wherein, " * " expression is multiplied each other.
Exemplary, an eCCE carries an ePDCCH, and each eCCE takies 40 RE; Then can set the second preset number Q=2; By that analogy, be generally can be by 12 integers of dividing exactly, as being set to 3 for the first preset number; PRB pair just can be divided into M sub-cells, M=3*Q=3*2=6 like this.
It is worthy of note that subscriber equipment is consistent to the division rule and the base station of subelement,, and then guarantee the resource of separating of eCCE beared information among the PRBpair is shone upon and can correctly be carried out with the RE that each eCCE takies that confirms that guarantees that subscriber equipment can be correct.
S202, subscriber equipment are confirmed one or more subelements that each eCCE takies on the PRB pair in the M sub-cells.
Be worth pointing out being that subscriber equipment is confirmed subelement number and the position that each eCCE takies, generally speaking, the number of the subelement that each eCCE takies is identical, and is identical or close with this RE number that guarantees that each eCCE takies.The method that subscriber equipment is confirmed the subelement that eCCE takies is consistent with the method that the base station is confirmed; So confirm that the number of the subelement that each eCCE takies is also consistent with the base station with the position; To guarantee PRB pair being separated mapping, repeat no more at this in correct position.
S203, subscriber equipment are through receiving each eCCE on one or more subelements, to obtain each eCCE loaded information.
Method is confirmed in the control signal resource unit that the embodiment of the invention provides, subscriber equipment on the frequency domain with time domain on to Physical Resource Block to dividing, so that Physical Resource Block is to being divided into the M sub-cells; Confirm one or more subelements that Physical Resource Block takies last each eCCE; And through these subelements receptions eCCE loaded information.So; Can guarantee each eCCE balancing performance through confirming the position of subelement on time domain and frequency domain that eCCE takies; Can regulate the size of dividing eCCE according to current system requirements simultaneously; The eCCE that make to form ePDCCH a Physical Resource Block on the RE number that takies close with the demand of ePDCCH, reduce the wasting of resources, and then the raising resource utilization.
Method is confirmed in the control signal resource unit that another embodiment of the present invention provides, and as shown in Figure 4, this method step comprises:
S301, base station are divided into the P=3 equal portions with PRB pair on frequency domain; If PRB pair takies L symbol on time domain, at least one takies m symbol among PDCCH, PHICH and the PCFICH, and L-m symbol is divided into Q part; Obtain the M sub-cells, wherein M=3*Q.
Further, on the time domain owing to receive symbol numbers that at least one item takies among PDCCH, PHICH and the PCFICH and the influence of dividing umber Q, the symbol that each part takies in Q part; Maybe be different like the OFDM symbol, suppose that promptly PDCCH only accounts for 1 symbol under the classical scene that ePDCCH uses; Subcarrier L=14, Q=2, CRS take antenna port 0 and 1; DMRS takies antenna port 7 or antenna port 8 or takies antenna port 7 and 8, no CSI-RS (Channel State Information-Reference Signal, channel status indication frequency pilot sign); At this moment; The symbol that can be used on the time domain carried eCCE is 13, and can't divide equally under the situation of Q=2, so can adopt following manner to divide according to Q=2.
Promptly; When L-m=14-1=13 can not be divided exactly by 2; The M sub-cells is divided into 2 parts on time domain; (L-m) %Q=(14-1) %2=1 sub-cells of going forward in time domain; Take
individual symbol, back Q-[(L-m) %Q]=2-1=1 sub-cells takies
individual symbol on time domain.A subelement on the time domain is corresponding three sub-cells on frequency domain, and each subelement accounts for 4 number of sub-carrier on frequency domain.So; The RE number that three sub-cells on the frequency domain in the preceding portion on the time domain take is 4*7=28; The RE number that three sub-cells on the frequency domain on the time domain in the portion of back take is 4*6=24; Remove the pilot tone that DMRS and CRS take, can obtain each subelement through simulation result and take general 22.7 RE.
Preferably, suppose that PDCCH only accounts for 2 symbols, subcarrier L=14, Q=2; CRS takies antenna port 0 and 1, and DMRS takies antenna port 7 and/or antenna port 8, no CSI-RS (Channel State Information-Reference Signal, channel status indication frequency pilot sign); At this moment on time domain, two equal portions subelements are arranged, each subelement takies 6 symbols; As take 6 OFDM symbols, and the three equal parts subelement is arranged on the frequency domain, each subelement takies 4 number of sub-carrier; Total M=6 sub-cells among the RB pair, each subelement takies 24 RE, removes the RE number that takies behind the frequency pilot sign and is less than 24.
S302, base station confirm that each eCCE takies plural subelement on the PRB pair, and plural subelement is on different frequency domains, or plural subelement is on same frequency.
Preferably, as shown in Figure 2, each eCCE takies 2 sub-cells, and 2 sub-cells that each eCCE takies are different on frequency domain, can obtain frequency diversity gain like this and make each eCCE take RE number balance as far as possible.
Preferably, as shown in Figure 5, each eCCE takies 2 sub-cells, and 2 sub-cells that each eCCE takies are identical on frequency domain, can obtain the gain that channel estimating is smoothly brought like this.
Need to prove, can according to when transmission current channel selection needs balance eCCE number of resources still obtain the gain that channel estimating is smoothly brought, both mode of can certainly selecting to neutralize is not done any qualification at this.
S303, base station with each eCCE loaded information correspondence mappings among the PRB pair to one or more subelements.
Need to prove the subelement that these one or more subelements take for this eCCE.
Confirm for each eCCE according to step S302; Subelement number and position that each eCCE comprises; The eCCE loaded information is mapped on the PRB pair; Such mapping mode can be so that the DMRS number in the subelement that eCCE takies be identical, and then makes that the channel estimating performance of each eCCE is balanced.
S304, base station are sent each eCCE loaded information through one or more subelements to subscriber equipment.
Need to prove, execution in step S307 behind the step S304, step S304 and step S305 and step S306 do not have ordinal relation.
S305, subscriber equipment are divided into the P=3 equal portions with PRB pair on frequency domain; If PRB pair takies L symbol on time domain, at least one takies m symbol among PDCCH, PHICH and the PCFICH, and L-m symbol is divided into Q part; Obtain the M sub-cells, wherein M=3*Q.
Subscriber equipment uses the method identical with the base station that PRB pair is divided, and obtains the M sub-cells identical with the base station, repeats no more at this.
S306, subscriber equipment confirm that each eCCE takies plural subelement on the PRB pair, and plural subelement is on different frequency domains, or plural subelement is on same frequency.
Need to prove; Confirm each multiplexing eCCE when the base station and take plural subelement, plural subelement is on different frequency domains the time, and subscriber equipment is also confirmed each eCCE on the subelement identical with the base station on the different frequency domains according to same method; In like manner; Confirm each multiplexing eCCE when the base station and take plural subelement, plural subelement is on same frequency the time, and subscriber equipment is also confirmed each eCCE on identical subelement according to same method.
S307, subscriber equipment are through receiving each eCCE on one or more subelements, to obtain each eCCE loaded information.
Method is confirmed in the control signal resource unit that the embodiment of the invention provides, the base station on the frequency domain with time domain on to Physical Resource Block to dividing, so that Physical Resource Block is to being divided into the M sub-cells; Confirm one or more subelements that Physical Resource Block takies last each eCCE; With each eCCE loaded information correspondence mappings to subelement; And pass through these subelements and send the eCCE loaded information to subscriber equipment; Subscriber equipment is also divided subelement according to identical division methods; And the subelement that takies according to each e-CCE to Physical Resource Block centering that confirms receives the eCCE loaded information, so, and can be through subelement each eCCE balancing performance of position assurance on time domain and frequency domain of confirming that eCCE takies; Can regulate the size of dividing eCCE according to current system requirements simultaneously; The eCCE that make to form ePDCCH a Physical Resource Block on the RE number that takies close with the demand of ePDCCH, reduce the wasting of resources, and then the raising resource utilization.
The base station 40 that the embodiment of the invention provides, as shown in Figure 6, comprising:
Further; Division unit 401 can be divided into 3 equal portions with PRB pair on frequency domain, if PRB pair takies L symbol on time domain, at least one item among PDCCH, PHICH and the PCFICH takies m symbol; L-m symbol is divided into Q part, obtains the M=3*Q sub-cells.
Wherein, If L-m can be divided exactly by Q, each subelement takies
individual symbol on time domain;
If L-m can not be divided exactly by Q; In the M sub-cells, (L-m) %Q sub-cells of going forward in time domain accounts for the individual symbol of Ceil [(L-m)/Q] on time shaft, and back Q-[(L-m) %Q] sub-cells accounts for the individual symbol of Floor [(L-m)/Q] on time shaft; Wherein, % is a modulo operator number, and Ceil is the symbol that rounds up, and Floor is for rounding symbol downwards.
The method of dividing is described in detail at said method embodiment, no longer launches at this.
Exemplary, confirm that unit 402 can confirm that each eCCE takies two or more subelements on the PRB pair, and these two or more subelements are on different frequency domains.
Or, confirm that unit 402 can confirm that each eCCE takies two or more subelements on the PRB pair, and two or more subelement is on same frequency.
Transmitting element 404 is used for sending the eCCE loaded information through one or more subelements of map unit 403 mappings to subscriber equipment 50.
The method that this base station 40 can use the foregoing description to provide is carried out work, and method of work is identical with the method that embodiment provides, and repeats no more at this.
The base station 40 that the embodiment of the invention provides, base station 40 on the frequency domain with time domain on to Physical Resource Block to dividing, so that Physical Resource Block is to being divided into the M sub-cells; Confirm one or more subelements that Physical Resource Block takies last each eCCE; With each eCCE loaded information correspondence mappings to subelement; And pass through these subelements and send the eCCE loaded information to subscriber equipment 50.So; Can guarantee each eCCE balancing performance through confirming the position of subelement on time domain and frequency domain that eCCE takies; Can regulate the size of dividing eCCE according to current system requirements simultaneously; The eCCE that make to form ePDCCH a Physical Resource Block on the RE number that takies close with the demand of ePDCCH, reduce the wasting of resources, and then the raising resource utilization.
The subscriber equipment 50 that the embodiment of the invention provides, as shown in Figure 7, comprising:
Exemplary, division unit can be divided into 3 equal portions with PRB pair on frequency domain; If PRB pair takies L symbol on time domain, at least one shared symbol quantity among PDCCH, PHICH and the PCFICH is m, and L-m symbol is divided into Q part; Obtain the M sub-cells, wherein M=3*Q.If L-m can be divided exactly by Q, each subelement takies
individual symbol on time domain; If L-m can not be divided exactly by Q; In the M sub-cells, (L-m) %Q sub-cells of going forward in time domain accounts for the individual symbol of Ceil [(L-m)/Q] on time shaft, and back Q-[(L-m) %Q] sub-cells accounts for the individual symbol of Floor [(L-m)/Q] on time shaft; Wherein, % is a modulo operator number, and Ceil is the symbol that rounds up, and Floor is for rounding symbol downwards.
It is worthy of note; If the base station confirms that each eCCE takies plural subelement on the PRB pair; And this two sub-cells is on different frequency domains; Confirm that unit 502 is used for confirming respectively that each eCCE of PRB pair takies the subelement that plural division unit 501 is divided, plural subelement is on different frequency domains.
If the base station confirms that each eCCE of PRB pair takies plural subelement; And this two sub-cells is on same frequency; Confirm that unit 502 is used for confirming that each eCCE takies the subelement that plural division unit 501 is divided on the PRB pair, two or more subelements are on same frequency.
Receiving element 503 is used for through on one or more subelements of confirming in definite unit 502 each eCCE being received, to obtain each eCCE loaded information.
The method that this subscriber equipment 50 can use the foregoing description to provide is carried out work, and method of work is identical with the method that embodiment provides, and repeats no more at this.
The subscriber equipment 50 that the embodiment of the invention provides, subscriber equipment 50 on the frequency domain with time domain on to Physical Resource Block to dividing, so that Physical Resource Block is to being divided into the M sub-cells; Confirm one or more subelements that Physical Resource Block takies last each eCCE; And through these subelements receptions eCCE loaded information.So; Can guarantee each eCCE balancing performance through confirming the position of subelement on time domain and frequency domain that eCCE takies; Can regulate the size of dividing eCCE according to current system requirements simultaneously; The eCCE that make to form ePDCCH a Physical Resource Block on the RE number that takies close with the demand of ePDCCH, reduce the wasting of resources, and then the raising resource utilization.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of said claim.
Claims (12)
1. method is confirmed in a control signal resource unit, it is characterized in that, comprising:
On frequency domain, a Physical Resource Block is carried out five equilibrium to presetting number P by first; And remaining symbol was divided by the second preset number Q on time domain after said Physical Resource Block centering removed at least one the shared symbol among physical downlink control channel PDCCH, physical mixed automatic repeat requests indicating channel PHICH and the Physical Control Format Indicator Channel PCFICH, obtained the M=P*Q sub-cells;
Confirm one or more subelements that said Physical Resource Block takies in the M sub-cells last each enhancing control channel unit eCCE;
With said each eCCE loaded information correspondence mappings to said one or more subelements;
Send said each eCCE loaded information through said one or more subelements to subscriber equipment.
2. method according to claim 1 is characterized in that, the said first preset number P is 3, and said Physical Resource Block is to taking L symbol on time domain, and at least one shared symbol quantity among said PDCCH, PHICH and the PCFICH is m;
Saidly said Physical Resource Block centering is removed behind at least one the shared symbol among PDCCH, PHICH and the PCFICH remaining symbol on time domain, divide and comprise by the second preset number Q:
If L-m can be divided exactly by Q; In the said M sub-cells, each subelement takies
individual symbol on time domain; Or
If L-m can not be divided exactly by Q; In the said M sub-cells, (L-m) %Q sub-cells of going forward in time domain accounts for the individual symbol of Ceil [(L-m)/Q] on time shaft, and back Q-[(L-m) %Q] sub-cells accounts for the individual symbol of Floor [(L-m)/Q] on time shaft; Wherein, % is a modulo operator number, and Ceil is the symbol that rounds up, and Floor is for rounding symbol downwards.
3. method according to claim 1 is characterized in that, said definite said Physical Resource Block comprises one or more subelements that last each enhancing control channel unit eCCE takies in the M sub-cells:
Confirm at least two sub-cells that said Physical Resource Block takies in the M sub-cells last each multiplexing eCCE, said at least two sub-cells are on identical or different frequency domain.
4. method is confirmed in a control signal resource unit, it is characterized in that, comprising:
On frequency domain, a Physical Resource Block is carried out five equilibrium to presetting number P by first; And remaining symbol was divided by the second preset number Q on time domain after said Physical Resource Block centering removed at least one the shared symbol among physical downlink control channel PDCCH, physical mixed automatic repeat requests indicating channel PHICH and the Physical Control Format Indicator Channel PCFICH, obtained the M=P*Q sub-cells;
Confirm one or more subelements that said Physical Resource Block takies in the M sub-cells last each enhancing control channel unit eCCE;
Through on said one or more subelements, said each eCCE being received, to obtain said each eCCE loaded information.
5. method according to claim 4 is characterized in that, the said first preset number P is 3, and said Physical Resource Block is to taking L symbol on time domain, and at least one shared symbol quantity among said PDCCH, PHICH and the PCFICH is m;
Saidly said Physical Resource Block centering is removed behind at least one the shared symbol among PDCCH, PHICH and the PCFICH remaining symbol on time domain, divide and comprise by the second preset number Q:
If L-m can be divided exactly by Q; In the said M sub-cells, each subelement takies
individual symbol on time domain; Or
If L-m can not be divided exactly by Q; In the said M sub-cells, (L-m) %Q sub-cells of going forward in time domain accounts for the individual symbol of Ceil [(L-m)/Q] on time shaft, and back Q-[(L-m) %Q] sub-cells accounts for the individual symbol of Floor [(L-m)/Q] on time shaft; Wherein, % is a modulo operator number, and Ceil is the symbol that rounds up, and Floor is for rounding symbol downwards.
6. method according to claim 4 is characterized in that, said definite said Physical Resource Block comprises one or more subelements that last each enhancing control channel unit eCCE takies in the M sub-cells:
Confirm at least two sub-cells that said Physical Resource Block takies in the M sub-cells last each multiplexing eCCE, said at least two sub-cells are on identical or different frequency domain.
7. a base station is characterized in that, comprising:
Division unit; Be used on frequency domain, a Physical Resource Block being carried out five equilibrium to presetting number P by first; And remaining symbol was divided by the second preset number Q on time domain after said Physical Resource Block centering removed at least one the shared symbol among physical downlink control channel PDCCH, physical mixed automatic repeat requests indicating channel PHICH and the Physical Control Format Indicator Channel PCFICH, obtained the M=P*Q sub-cells;
Confirm the unit, be used for one or more subelements of confirming that said Physical Resource Block takies in the M sub-cells last each enhancing control channel unit eCCE by said division unit division;
Map unit is used for one or more subelements that each eCCE loaded information correspondence mappings is confirmed to said definite unit;
Transmitting element is used for sending said each eCCE loaded information through one or more subelements of said map unit mapping to subscriber equipment.
8. base station according to claim 7 is characterized in that,
Said division unit; Specifically be used for said Physical Resource Block is carried out equal portions by the said first preset number P=3 on frequency domain; If said Physical Resource Block is to taking L symbol on time domain, at least one shared symbol quantity among said PDCCH, PHICH and the PCFICH is m; , L-m symbol is divided into Q part on time domain, obtain the M=3*Q sub-cells;
If L-m can be divided exactly by Q; In the said M sub-cells, each subelement takies
individual symbol on time domain; Or,
If L-m can not be divided exactly by Q; In the said M sub-cells, (L-m) %Q sub-cells of going forward in time domain accounts for the individual symbol of Ceil [(L-m)/Q] on time shaft, and back Q-[(L-m) %Q] sub-cells accounts for the individual symbol of Floor [(L-m)/Q] on time shaft; Wherein, % is a modulo operator number, and Ceil is the symbol that rounds up, and Floor is for rounding symbol downwards.
9. according to claim 7 or 8 described base stations, it is characterized in that,
Said definite unit specifically is used at least two sub-cells by said division unit division that definite said Physical Resource Block takies in the M sub-cells last each eCCE, and said at least two sub-cells are on identical or different frequency domain.
10. a subscriber equipment is characterized in that, comprising:
Division unit; Be used on frequency domain, a Physical Resource Block being carried out five equilibrium to presetting number P by first; And remaining symbol was divided by the second preset number Q on time domain after said Physical Resource Block centering removed at least one the shared symbol among physical downlink control channel PDCCH, physical mixed automatic repeat requests indicating channel PHICH and the Physical Control Format Indicator Channel PCFICH, obtained the M=P*Q sub-cells;
Confirm the unit, be used for one or more subelements of confirming that said Physical Resource Block takies in the M sub-cells last each enhancing control channel unit eCCE by said division unit division;
Receiving element is used for through on said one or more subelements of confirming in said definite unit said each eCCE being received, to obtain said each eCCE loaded information.
11. subscriber equipment according to claim 10 is characterized in that,
Said division unit; Specifically be used for said Physical Resource Block is carried out equal portions by the said first preset number P=3 on frequency domain; If said Physical Resource Block is to taking L symbol on time domain, at least one shared symbol quantity among said PDCCH, PHICH and the PCFICH is m; , L-m symbol is divided into Q part on time domain, obtain the M=3*Q sub-cells;
If L-m can be divided exactly by Q; In the said M sub-cells, each subelement takies
individual symbol on time domain; Or,
If L-m can not be divided exactly by Q; In the said M sub-cells, (L-m) %Q sub-cells of going forward in time domain accounts for the individual symbol of Ceil [(L-m)/Q] on time shaft, and back Q-[(L-m) %Q] sub-cells accounts for the individual symbol of Floor [(L-m)/Q] on time shaft; Wherein, % is a modulo operator number, and Ceil is the symbol that rounds up, and Floor is for rounding symbol downwards.
12. according to claim 10 or 11 described methods, it is characterized in that,
Said definite unit specifically is used at least two sub-cells by said division unit division that definite said Physical Resource Block takies in the M sub-cells last each eCCE, and said at least two sub-cells are on identical or different frequency domain.
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