CN101938793B - Method and equipment for allocating PHICH - Google Patents
Method and equipment for allocating PHICH Download PDFInfo
- Publication number
- CN101938793B CN101938793B CN200910108612.1A CN200910108612A CN101938793B CN 101938793 B CN101938793 B CN 101938793B CN 200910108612 A CN200910108612 A CN 200910108612A CN 101938793 B CN101938793 B CN 101938793B
- Authority
- CN
- China
- Prior art keywords
- reserved
- phich
- resource
- phich group
- index
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention relates to a method and equipment for allocating a PHICH (Physical Hybrid ARQ Indicator Channel). The method and the equipment related to the embodiment of the invention comprise: determining the total number of PHICH groups required to be reserved according to the number of unpaired uplink component carriers (UL CC) connected with downlink component carries (DL CC) of reserved PHICH resource; reserving PHICH group resource for the unpaired UL CC according to the total number of the reserved PHICH groups; and allocating the reserved PHICH group resource to the unpaired UL CC. The embodiment of the invention reserves and allocates the PHICH group resource for the unpaired UL CC, thus solving the problem that one DL CC allocates PHICH channels for a plurality of UL CC.
Description
Technical field
The embodiment of the present invention relates to the communication technology, particularly relates to the method and apparatus of a kind of PHICH (Physical Hybrid ARQIndicator Channel, physics mixes retransmission indicating chanel) channel allocation.
Background technology
By LTE (Long Term Evolution, Long Term Evolution) enhancing system LTE--A (the Long Term Evolution-Advanced of the further evolution of system, senior Long Term Evolution) in, the selected use of carrier aggregation (CarrierAggregation) technology, to support wider bandwidth, meet International Telecommunications Union for the 4th generation the communication technology the peak data rate requirement.Carrier aggregation refers to that UE can receive or transmitting data on a plurality of member carriers (Component carrier) simultaneously.It is compatible that each member carrier in the LTE-A system may be configured to the LTE system, and the frequency spectrum of each member carrier can be adjacent continuous frequency spectrum, also can be non-conterminous frequency spectrum in identical frequency band or even the discontinuous spectrum in different frequency bands.In the LTE-A system, LTE UE (LTE User Equipment, the LTE subscriber equipment) can only be therein the enterprising row data of carrier wave receive or send out, and LTE-A UE can access a plurality of member carriers according to its ability and business demand simultaneously and carries out data transmit-receive.Carrier aggregation technology is also referred to as spectrum aggregating (Spectrum Aggregation) technology, or bandwidth expansion (Bandwidth Extension) technology.
What PHICH (Physical hybrid ARQ indicator channel, physical mixing retransmission indicating chanel) carried is the response message of base station to the data transmission block of UE emission.If base station correctly receives the data transmission block that UE sends, PHICH channel feedback ACK is passed through to UE in base station; Otherwise, if base station does not correctly receive the data transmission block that UE sends, PHICH channel feedback NACK is passed through to UE in base station.After UE receives nack message, then this data transmission block is repeated to send.
In the LTE system, a DL CC (Downlink Component Carrier, downlink member carrier) is only the reserved PHICH resource of a UL CC (Uplink Component Carrier, uplink member carrier).After adopting carrier aggregation technology, need to be that a plurality of UL CC distribute the PHICH resource at a DL CC, indented material does not have solution.
Summary of the invention
The embodiment of the present invention provides a kind of method and apparatus of PHICH channel allocation.In order to be a plurality of UL CC distribution PHICH channels on a DLCC.
The method of a kind of PHICH channel allocation that the embodiment of the present invention provides, comprise
The not paired uplink member carrier UL CC number be connected according to the downlink member carrier DL CC with reserved PHICH resource, determine and need reserved PHICH group (PHICH group) total number;
According to above-mentioned reserved PHICH group total number, it is the reserved PHICH group resource of not paired UL CC;
Reserved PHICH group resource is distributed to not to UL CC in pairs.
A kind of base station that the embodiment of the present invention provides comprises:
The first processing module, for the not paired UL CC number according to being connected with the DL CC of reserved PHICH resource, determine and need reserved PHICH group total number;
The first reserved module, for according to above-mentioned reserved PHICH group total number, is the reserved PHICH group resource of not paired UL CC;
The first distribution module, distribute to not UL CC in pairs for the PHICH group resource by reserved.
A kind of UE that the embodiment of the present invention provides comprises:
The second processing module, for determining on DL CC to be the reserved PHICH zone of above-mentioned UL CC according to not paired UL CC index;
The 3rd processing module, for first PRB (the Physical Resource Block according to UL CC is not used in the transfer of data of current subframe in pairs, Physical Resource Block) index, determine on above-mentioned PHICH zone to be reserved PHICH group index and the PHICH index of above-mentioned UL CC;
The first acquisition module, the ACK/NACK response message that obtains base station feedback for the above-mentioned PHICH group index according to above-mentioned PHICH zone and PHICH index.
The system of a kind of PHICH channel allocation that the embodiment of the present invention provides comprises:
Base station, for the not paired UL CC number according to being connected with the DL CC of reserved PHICH resource, determine and need reserved PHICH group total number; According to above-mentioned reserved PHICH group total number, it is the reserved PHICH group resource of not paired UL CC; Reserved PHICH group resource is distributed to not to UL CC in pairs;
UE, for determining on DL CC to be the reserved PHICH zone of above-mentioned UL CC according to not paired UL CC index; According to first PRB index that UL CC is not used in the transfer of data of current subframe in pairs, determine on above-mentioned PHICH zone to be reserved PHICH group index and the PHICH index of above-mentioned UL CC; The ACK/NACK response message that obtains base station feedback according to above-mentioned PHICH group index and the PHICH index in above-mentioned PHICH zone.
The method and apparatus of a kind of PHICH channel allocation that the embodiment of the present invention provides.By being that azygous UL CC reserves and distributes PHICH group resource, having solved at a DL CC is the problem that a plurality of UL CC distribute the PHICH channel.
The accompanying drawing explanation
Fig. 1 is that the present invention distributes PHICH embodiment schematic diagram;
Fig. 2 is the present invention's reserved PHICH embodiment schematic diagram in control area;
Fig. 3 is that the present invention reserves PHICH embodiment schematic diagram in data area;
Fig. 4 is embodiment of the present invention VRB schematic diagram;
Fig. 5 is that the present invention is at the reserved PHICH embodiment schematic diagram of segment area;
Fig. 6 is embodiment of the present invention segment area schematic diagram;
Fig. 7 is embodiment of the present invention base station schematic diagram;
Fig. 8 is embodiment of the present invention UE schematic diagram;
The system schematic that Fig. 9 is a kind of PHICH channel allocation of the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of method and apparatus of PHICH channel allocation, below the technical scheme of the embodiment of the present invention is described in further detail.
Fig. 1 is that the present invention distributes PHICH embodiment schematic diagram.The present embodiment comprises:
Step 101, the not paired UL CC number be connected according to the DL CC with reserved PHICH resource, determine and need reserved PHICH group total number;
Step 102, according to above-mentioned reserved PHICH group total number, is the reserved PHICH group resource of not paired UL CC;
Step 103, distribute to not UL CC in pairs by reserved PHICH group resource.
At first the present embodiment will determine the not PHICH group total number of paired UL CC needs be connected with the DL CC of reserved PHICH resource, in definite process, first calculate each PHICH group number that UL CC does not need in pairs, the PHICH group number additions that more all not paired UL CC needed, thus total number obtained.Then according to above-mentioned definite total number, reserved resource in control area, data area or the segment area of the subframe of the DL CC that is preparing reserved PHICH resource, and reserved resource is distributed to corresponding UL CC.
It is the problem that a plurality of UL CC distribute the PHICH channel that the present embodiment has solved at a DL CC.While the present embodiment also can be applied to multicarrier and add in the scenes such as spatial reuse and collaboration communication, in these scenes, equally also need on a DL CC, for single or multiple UL CC, distribute a plurality of PHICH channels, its PHICH resource reservation and distribution method are identical with said method, here repeat no more.
Fig. 2 is the present invention's reserved PHICH embodiment schematic diagram in control area.The present embodiment comprises:
Step 201, the not paired UL CC number be connected according to the DL CC with reserved PHICH resource, determine and need reserved PHICH group total number;
Step 202, according to above-mentioned reserved PHICH group total number, in the control area of the subframe of the DL CC for preparing reserved PHICH resource in pairs UL CC reserve PHICH group resource;
Step 203, distribute to not UL CC in pairs by reserved PHICH group resource.
At first the present embodiment will determine the not extra PHICH group total number of paired UL CC needs be connected with the DL CC of reserved PHICH resource, in definite process, first calculate each PHICH group number that UL CC does not need in pairs, the PHICH number additions that more all not paired UL CC needed, thus total number obtained.Then according to above-mentioned definite total number, reserve resource in the control area of DL CC, and reserved resource is distributed to corresponding UL CC.
In the present embodiment, extra reserved PHICH resource provides the ACK/NACK feedback for a DL CC for ULCC azygous with it, therefore at first needs to determine that this DL CC of each subframe need to reserve how many PHICH resources for its azygous UL CC.This DL CC is to k the reserved PHICH group number p of azygous UL CC
kequal:
P
k=Ceil (PRB of this UL CC counts * alpha/8)
Wherein ceil is the function that rounds up; Alpha is a coefficient, and it can get identical value to all not paired UL CC, also can get different values.The value of alpha comes from a set, and element number and value in set are configured by base station.For example this set has four elements, and these four elements can be set to { 1,1/2,1/4,1/8}; The value of alpha can be by the semi-static signal deployment of system.Base station according to each not in pairs the PRB number of ULCC and alpha to determine need to be the extra reserved PHICH group number p of this UL CC
kif, in pairs the enterprising row space of UL CC is not multiplexing, can amplification coefficient alpha, thus increase extra reserved PHICH group number.。
Then will be that all not reserved PHICH group of paired UL CC count p at this DL CC
kaddition, just draw and need reserved PHICH group total number P
P＝∑p
k
In the present embodiment, extra reserved PHICH resource should not affect the backward compatibility of this DL CC to the LTE system, therefore, can utilize the CCE (Control Channel Element, control channel unit) in control area to reserve the PHICH resource.
The CCE that is used to reserved PHICH resource can block (blocking) some PDCCH candidate (candidate PDCCH), the blocking-up here refers to if certain CCE is used as extra PHICH resource reservation, and all PDCCH candidate that comprise this CCE can not be used for carrying out ascending resource scheduling or scheduling downlink resource by base station.Number that PDCCH candidate is blocked can be different and different because select to be used for the CCE of reserved PHICH resource, below by illustrating.1 CCE takies 36 RE (Resourceelement, resource element), and each PHICH group need to take 12 RE, and therefore a CCE can reserve 3 PHICH group.The size of each PDCCH candidate may be 1,2,4,8 CCE, and the original position of each PDCCH candidate on the CCE of current subframe resource must be its big or small integral multiple place.For example in the current subframe of system, have 18 CCE, be numbered 0,1 ..., 17.If need 1 CCE carry out extra PHICH resource reservation, and the numbering of this CCE is 8 integral multiple, obviously will have 4 PDCCH candidate to be blocked, and the size of the PDCCH candidate that these are blocked is respectively 8,4,2,1 CCE.If adopt the CCE that is numbered 17 to be used as the CCE of PHICH resource reservation, there are two PDCCH candidate to be blocked, the PDCCH size that these are blocked is respectively 2,1 CCE.Visible, choose different CCE as the PHICH resource reservation, can affect the number that PDCCH candidate is blocked.
The present embodiment has reduced by specific system of selection the number that PDCCH candidate is blocked.Be made as DL CC total M CCE on current subframe that a UE provides a plurality of ACK/NACK, and CCE is numbered 0,1 ..., M-1.Simultaneously to be used for the CCE quantity of reserved PHICH resource on this DL CC be N to current subframe,
N＝Ceil(P/3)
And N<=M.If:
a＝M mod 8；c＝floor(M/8)
Here mod asks modular arithmetic, and floor is downward rounding operation symbol.
If N<=a: being used for the CCE index of reserved PHICH resource is M-1, M-2 ..., M-N.
If N>a: make b=floor ((N-a)/8)); D=(N-a) mod 8, N=8*b+d+a.The individual CCE index that is used for reserved PHICH resource of front a is M-1, M-2 ..., M-a.If the CCE of the reserved PHICH resource of remaining N-a adopts the mode that shows signaling, can in c group (every group of 8 continuous CCE) CCE, choose b+ceil (d/8) group CCE and be used for the reserved of PHICH resource; In order to reduce signaling consumption, wherein d the b+ceil (d/8) that can be arranged to be selected for the CCE of PHICH resource reservation organizes first group or interior front d CCE or rear d the CCE of last group on the CCE resource.Remaining 8*b the CCE for the PHICH resource reservation corresponds respectively to the b group CCE be selected.Adopt and show that signaling needs extra overhead bit.If the CCE of remaining N-a reserved PHICH resource adopts the mode of conceal signaling notice, front b+ceil (d/8) the group CCE in c group CCE or rear b+ceil (d/8) group CCE are selected as the CCE group for the PHICH resource reservation; And d the b+ceil (d/8) that can be arranged to be selected for the CCE of PHICH resource reservation organizes the 1st group or interior front d CCE or rear d the CCE of last group on the CCE resource.Remaining 8*b the CCE for the PHICH resource reservation corresponds respectively to the b group CCE be selected.
Reserving the PHICH resource by CCE needs UE to want correctly to detect physical control indicating channel (PCFICH:physical control format indicator channel).Therefore in order further to improve the accuracy that UE detects the PCFICH channel, base station can keep the CFI value constant in several subframes.Concrete CFI hold period can be configured by base station.
Each CCE can comprise 3 PHICH group.N CCE that is used as the PHICH resource reservation sorted according to its CCE index ascending (or descending).The order of PHICH group and be used as the PHICH resource reservation CCE can be according to following mapping relations:
| The CCE index that is used as the PHICH resource reservation | PHICH group index |
| The 1st CCE that is used as the PHICH |
0，1，2 |
| The 2nd CCE that is used as the PHICH |
3，4，5 |
| … | … |
| N-1 CCE that is used as the PHICH resource reservation | 3*(N-2)，3*(N-1)-2，3*(N-1)-1 |
| N CCE that is used as the PHICH resource reservation | 3*N，…，P |
Below come for a specific example said process is further described.If this DL CC of current subframe has 43 CCE, i.e. M=43; As N, respectively during value 3,10, utilize CCE to reserve the PHICH resource, the CCE be selected is as follows:
During N=3, be numbered 40,41,42 CCE and be selected the CCE as extra reserved PHICH resource.
During N=10, at first be numbered 40,41,42 CCE and be selected the CCE as reserved PHICH resource; Secondly because this DL CC of current subframe has 5 CCE groups, choose 1 group of CCE (can notify by showing signaling or conceal signaling) from these 5 groups.Last take this organize the CCE that front 7 or rear 7 CCE are used as reserved PHICH resource in this 1 group of CCE chosen.
The embodiment of the present invention, by reserving in control area and distributing PHICH, has realized at a DL CC being that azygous UL CC distributes PHICH, thereby solved at a DL CC, is the problem that a plurality of UL CC distribute the PHICH channel.Simultaneously, can reduce the number that PDCCH candidate is blocked.The present embodiment also can be applied to multicarrier and add in the scenes such as spatial reuse and collaboration communication, in these scenes, need to be equally also that single or multiple UL CC distribute a plurality of PHICH channels at a DL CC, its method be identical with said method, here repeats no more.
Fig. 3 is that the present invention reserves PHICH embodiment schematic diagram in data area.The present embodiment comprises:
Step 301, the not paired UL CC number be connected according to the DL CC with reserved PHICH resource, determine and need reserved PHICH group total number;
Step 302, according to above-mentioned reserved PHICH group total number, in the data area of the subframe of the DL CC for preparing reserved PHICH resource in pairs UL CC reserve PHICH group resource;
Step 303, distribute to not UL CC in pairs by reserved PHICH group resource.
Originally execute example and at first will determine the not extra PHICH group total number of paired UL CC needs be connected with the DL CC of reserved PHICH resource, in definite process, first calculate each PHICH group number that UL CC does not need in pairs, the PHICH group number additions that more all not paired UL CC needed, thus total number obtained.Then according to above-mentioned definite total number, reserve resource in the data area of DL CC, and reserved resource is distributed to corresponding UL CC.
In the present embodiment, extra reserved PHICH resource provides the ACK/NACK feedback for a DL CC for ULCC azygous with it, therefore at first needs to be defined as the PHICH group total number P reserved with the azygous UL CC transmission of this DL CC needs.Definite method of P is identical with method definite in a upper embodiment.
In data area extra reserved PHICH resource at first need to determine these PHICH resources the time, position on the frequency resource, and the RE of reserved PHICH resource occupation can not with the specific reference symbol in descending community (cell-specific reference signal), the specific reference symbol of descending UE (UE-specific reference signal), primary synchronization channel (primary synchronous channel), auxiliary synchronization channel (secondary synchronouschannel), the RE that Physical Broadcast Channel (physical broadcast channel) takies conflicts mutually.
The extra reserved position of PHICH resource on time-domain determined by the following method.In a subframe, the OFDM symbol that extra PHICH resource occupies on time-domain can be arranged in first time slot or second time slot of this subframe or the part OFDM symbol of two time slots of this subframe.The OFDM symbol no matter extra PHICH resource occupies on time-domain be in same time slot or two time slots of same subframe between, the OFDM symbol quantity that can occupy on time-domain extra PHICH resource is indicated by semi-static signaling.For example can carry out respectively the OFDM symbol numbers of clearly indicating extra PHICH resource to occupy on time-domain with 4 kinds of states of 2 bits.Reserved PHICH resource in time slot or the order of the OFDM symbol occupied between time slot fix, as long as UE has been known the quantity of the OFDM symbol that reserved PHICH resource occupies like this, just can correctly know in current subframe, which OFDM symbol is used as the PHICH resource reservation.Certainly, if, for the OFDM symbol of indicating extra PHICH resource to occupy on time-domain is in same time slot or between different time slots, need semi-static signaling to be indicated.
The extra reserved position of PHICH resource on frequency domain determined by the following method.In the LTE system, 3 REG of each PHICH group (Resource Element Group, control element group) are dispersed on the whole system frequency band to obtain frequency diversity gain.For the PHICH resource in data area, need to be dispersed in 3 REG of a PHICH group on the whole system frequency band and obtain frequency diversity gain equally.In the LTE system, master sync signal, auxiliary synchronous signals are arranged in last and penultimate OFDM symbol of the 1st time slot of each radio frames (radio frame) and the 11st time slot, and PBCH is positioned at front 4 OFDM symbols of the 2nd time slot of each radio frames; And master sync signal, auxiliary synchronous signals, PBCH are 72 subcarriers that occupy system centre frequency place on frequency domain.Therefore, the OFDM sign bit that the OFDM character position occupied on time-domain when reserved PHICH resource and master sync signal, auxiliary synchronous signals, PBCH occupy is equipped with when overlapping, and reserved PHICH resource can not occupy 72 subcarriers at system centre frequency place on frequency domain.
Can there be following mapping mode the reserved position of PHICH resource on frequency domain: first method is that reserved PHICH resource corresponding PRB start position on frequency domain is fixed (as starting point is to be numbered 0 PRB), 3 REG of each PHICH group belong to respectively 3 different PRB (physical resourceblock), between these 3 PRB, fixing interval are arranged.The index of starting point PRB and the interval between PRB can be determined by the semi-static signal deployment of system or by system default.When reserved PHICH resource during corresponding 3*n PRB, first determines by above-mentioned rule front 3 PRB that reserved PHICH resource belongs on frequency domain, then after above-mentioned each PRB, distribute n-1 continuous PRB to be used as extra PHICH resource.Correspondingly, need bit to indicate the PRB number of extra PHICH resource correspondence on frequency domain.Second method is that the reserved position of PHICH resource on frequency domain can be mapped on corresponding PRB according to distributed (distributed) mode by VRB (virtualresource block, the virtual resource blocks) resource of base station assigns.This method has been utilized the existing DVRB distribution method of LTE Rel-8, makes 3 REG of a PHICH group be dispersed in the PRB that VRB maps out upper, thereby obtains frequency diversity gain.When reserved PHICH resource during more than 3 PRB, can be distributed a plurality of continuous VRB resources on frequency domain, to go out the PRB resource for reserved PHICH channel according to the VRB resource mapping.
If the number of symbols for the OFDM of reserved PHICH resource is v, and the index of OFDM symbol is s1, s2 ..., sv; Adopt be the first frequency domain position mapping mode the time, for PRB number corresponding on the frequency of reserved PHICH resource, be 3*n, and corresponding PRB index is p, p+1 ..., p+n, p+delta, p+1+delta ..., p+n+delta, p+2*delta, p+1+2*delta ..., p+n+2*delta; Here p is extra PHICH resource corresponding initial PRB index on frequency domain, and delta is the spacing value between PRB on frequency domain, and these two parameters are configured by base station.Reserved PHICH group shines upon according to following flow process:
For(j＝p，j++，j＜＝p+n)
For(r＝1，r++，r＜＝v)
At time-domain OFDM symbol, index is sr, and frequency domain PRB index is j, j+delta,
Shine upon respectively 3 or 2 PHICH group on j+2*delta; 3 of each PHICH group
Individual REG is j at PRB index respectively, and j+delta, on j+2*delta.
End
End
Adopt be the second frequency domain position mapping mode the time, if be 3*n for PRB number corresponding on the frequency of reserved PHICH resource, and in same time slot reserved PHICH resource, 3*n the PRB that PRB maps out corresponding to the individual continuous VRB of 3*n; Other mapping ruler is as noted above.If reserved PHICH resource, 3*n the PRB that PRB maps out corresponding to the individual continuous VRB of ceil (3*n/2) between two time slots in same subframe; Other mapping ruler is as noted above.
In addition, if there is no cell-specificreference symbol on frequency sub-carrier corresponding to time-domain OFDM symbol sr, at OFDM symbol index, be sr, can shine upon 3 PHICH group on corresponding 3 PRB on frequency resource; If on frequency sub-carrier corresponding to time-domain OFDM symbol sr, cell-specific reference symbol is arranged, on 3 PRB corresponding on frequency resource, can shine upon 2 PHICH group.
Below by two examples, said process is described in detail.What first example adopted is the first frequency domain position mapping mode.If the not paired UL CC number of current DL CC is 2, and this DL CC need to be respectively 2 azygous UL CC reserved 3 groups and 5 groups of PHICH channels; Reserved PHICH resource is corresponding 3 PRB on frequency domain, and the interval that the index of initial PRB equals between 0, PRB equals floor (the PRB number of DL CC/3).If reserved PHICH resource in the 1st time slot, can occupy the OFDM symbol that in this time slot, index is 6,5,4; 3 PHICHgroup resources have been reserved for first azygous UL CC on 3 PRB of reserved PHICH resource correspondence on frequency domain with on OFDM symbol 6; Reserved PHICH resource is on frequency domain on corresponding 3 PRB and be that second azygous UL CC reserved 3 PHICH group resources on OFDM symbol 5; Reserved PHICH resource is on frequency domain on corresponding 3 PRB and be that second azygous UL CC reserved 2 PHICH group resources on OFDM symbol 4.
What second example adopted is the second frequency domain position mapping mode.If the not paired UL CC number of current DL CC is 2, and this DL CC need to be respectively 2 azygous UL CC reserved 3 groups and 5 groups of PHICH channels; Reserved PHICH resource corresponding PRB on frequency domain is the PRB mapped out according to the mode of distributed by the VRB of base station assigns, and reserved PHICH resource is in first time slot of current subframe.At first determine the index of 3 PRB that reserved PHICH resource is corresponding; As shown in Figure 4, wherein the meaning of RBG is Resource Block Group, " time slot 1 " with " time slot 2 " numeral of being expert at is the VRB index.Reserved PHICH resource corresponding PRB on frequency domain can provide (index of 3 PRB that map out is 0,6,12) by VRB index 0,1,2 mappings.Reserved PHICH resource can occupy the OFDM symbol that in this time slot, index is 6,5,4 in the 1st time slot; Reserved PHICH resource is 0,6 at the index of frequency domain PRB, on 12 and on OFDM symbol 6, for first azygous UL CC, has reserved 3 PHICH group resources; Reserved PHICH resource is 0,6 at the index of frequency domain PRB, on 12 and be that second azygous UL CC reserved 3 PHICH group resources on OFDM symbol 5; Reserved PHICH resource is 0,6 at the index of frequency domain PRB, on 12 and be that second azygous UL CC reserved 2 PHICH group resources on OFDM symbol 4.
The embodiment of the present invention, by reserving in control area and distributing PHICH, has realized at a DL CC being that azygous UL CC distributes PHICH, thereby solved at a DL CC, is the problem that a plurality of UL CC distribute the PHICH channel.Simultaneously, can be so that the detection of extra PHICH channel be independent of the detection of PCFICH channel.The present embodiment also can be applied to multicarrier and add in the scenes such as spatial reuse and collaboration communication, in these scenes, need to be equally also that single or multiple UL CC distribute a plurality of PHICH channels at a DL CC, its method be identical with said method, here repeats no more.
Fig. 5 is that the present invention is at the reserved PHICH embodiment schematic diagram in fragment (segment) zone.The present embodiment comprises:
Step 501, the not paired UL CC number be connected according to the DL CC with reserved PHICH resource, determine and need reserved PHICH group total number;
Step 502, according to above-mentioned reserved PHICH group total number, in the segment area of the subframe of the DL CC for preparing reserved PHICH resource in pairs UL CC reserve PHICH group resource;
Step 503, distribute to not UL CC in pairs by reserved PHICH group resource.
Part band width configuration in the whole frequency band of DL CC becomes LTE and LTE-A to share, and remaining frequency band (the whole frequency band of this DL CC is removed and shared remaining frequency band after frequency band) can only be used by the LTE-A system, these remaining frequency bands are called as segment area, as shown in Figure 6.In segment area, can only be used for transmitting data or both also transmitting data informations of control information transmission.No matter in segment area, what transmits, the method that can use Fig. 2 or Fig. 3 embodiment to describe is carried out PHICH resource reservation and distribution.Difference is, while in segment area, distributing the PHICH resource, can also use the reserved distribution method that reaches of PHICH of LTE.
The embodiment of the present invention, by segment area, reserving and distribute PHICH, has realized at a DL CC being that azygous UL CC distributes PHICH, thereby solved at a DL CC, is the problem that a plurality of UL CC distribute the PHICH channel.The present embodiment also can be applied to multicarrier and add in the scenes such as spatial reuse and collaboration communication, in these scenes, need to be equally also that single or multiple up-link carriers distribute a plurality of PHICH channels at a DL CC, its method be identical with said method, here repeats no more.
Fig. 7 is embodiment of the present invention base station schematic diagram.The present embodiment comprises:
The first processing module 701, for the not paired ULCC number according to being connected with the DL CC of reserved PHICH resource, determine and need reserved PHICH group total number;
The first reserved module 702, for according to above-mentioned reserved PHICH group total number, is the reserved PHICH group resource of not paired ULCC;
The first distribution module 703, distribute to not UL CC in pairs for the PHICH group resource by reserved.
The first reserved module 702 of the present embodiment base station is specifically for reserved in the control area of the subframe of the DLCC preparing reserved PHICH resource; Or reserved in the data area of the subframe of the DL CC for preparing reserved PHICH resource; Or reserved in the segment area of the DL CC for preparing reserved PHICH resource.
The present embodiment base station has been used for the method shown in Fig. 1, here repeats no more.
Fig. 8 is embodiment of the present invention UE schematic diagram.The present embodiment comprises:
The second processing module 801, for determining on DL CC to be the reserved PHICH zone of above-mentioned ULCC according to not paired UL CC index;
The 3rd processing module 802, for first PRB index according to UL CC is not used in transfer of data in pairs, determine on above-mentioned PHICH zone to be reserved PHICH group index and the PHICH index of above-mentioned UL CC;
The first acquisition module 803, the ACK/NACK response message that obtains base station feedback for the above-mentioned PHICH group index according to above-mentioned PHICH zone and PHICH index.
The present embodiment base station has been used for the method shown in Fig. 1, here repeats no more.
The system schematic that Fig. 9 is a kind of PHICH channel allocation of the embodiment of the present invention.The present embodiment comprises:
The present embodiment base station has been used for the method shown in Fig. 1, here repeats no more.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, and the mode that also can add necessary general hardware platform by software realizes.Understanding based on such, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, or the network equipment etc.) carry out the above-mentioned method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device in embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Above disclosed be only several specific embodiment of the present invention, still, the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (11)
1. the method that the mixed retransmission indicating chanel PHICH of physics distributes, is characterized in that, comprising:
Calculate the PHICH group PHICH group number that uplink member carrier UL CC need to be not reserved in pairs that each is connected with the downlink member carrier DL CC of reserved PHICH resource;
By all not PHICH group number summations that UL CC need to be reserved in pairs, obtain needing reserved PHICH group total number;
According to described reserved PHICH group total number, it is the reserved PHICH group resource of not paired UL CC;
Reserved PHICH group resource is distributed to not to UL CC in pairs;
Each PHICH group PHICH group number that uplink member carrier UL CC need to be not reserved in pairs be connected with the downlink member carrier DL CC of reserved PHICH resource of described calculating comprises:
It according to the coefficient alpha of the Physical Resource Block PRB number of UL CC and configuration is not definite in pairs, need to be an extra reserved PHICH group number of paired UL CC.
2. the method for a kind of PHICH channel allocation as claimed in claim 1, is characterized in that, described reserved PHICH group resource comprises:
Reserved in the control area of the subframe of the DL CC for preparing reserved PHICH resource; Or
Reserved in the data area of the subframe of the DL CC for preparing reserved PHICH resource; Or
Reserved in the segment area of the subframe of the DL CC for preparing reserved PHICH resource.
3. the method for a kind of PHICH channel allocation as claimed in claim 2, is characterized in that, reserved comprising in the control area of the subframe of the described DL CC preparing reserved PHICH resource:
Determine a control channel Elements C CE of the minimum blocking-up of the generation number in control area;
Preferentially in this CCE, reserve the PHICH resource;
If the reserved PHICH group total number of described needs is greater than the PHICH group number that an above-mentioned a CCE can comprise, the zone beyond a CCE is reserved.
4. the method for a kind of PHICH channel allocation as claimed in claim 2, is characterized in that, reserved comprising in the data area of the subframe of the described DL CC preparing reserved PHICH resource:
Determine the time-domain position of reserved resource;
Determine the frequency domain position of reserved resource.
5. the method for a kind of PHICH channel allocation as claimed in claim 4, is characterized in that, the time-domain position of described definite reserved resource comprises:
Definite time-domain position is positioned at first time slot of subframe; Or
Definite time-domain position is positioned at second time slot of subframe; Or
Definite time-domain position is positioned at first time slot and second time slot of subframe.
6. the method for a kind of PHICH channel allocation as claimed in claim 4, is characterized in that, the frequency domain position of described definite reserved resource comprises:
Determine the PRB start position of reserved PHICH resource correspondence on frequency domain,
Three REG of a PHICH group are dispersed in three PRB; Or
The frequency domain position of reserved PHICH resource is determined according to the mapping of virtual resource blocks VRB distributed way.
7. the method for a kind of PHICH channel allocation as claimed in claim 1, is characterized in that, if not multiplexing at the described paired enterprising row space of UL CC, amplifies described coefficient alpha, to increase described extra reserved PHICH group number.
8. a base station, is characterized in that, comprising:
The first processing module, the PHICH group PHICH group number that UL CC need to be not reserved in pairs be connected with the DL CC of reserved PHICH resource for calculating each;
Described the first processing module also, for by all not PHICH group number summations that UL CC need to be reserved in pairs, obtains needing reserved PHICH group total number;
The first reserved module, for according to described reserved PHICH group total number, is the reserved PHICH group resource of not paired UL CC;
The first distribution module, distribute to not UL CC in pairs for the PHICH group resource by reserved.
9. a kind of base station as claimed in claim 8, is characterized in that, the described first reserved module is used for:
Reserved in the control area of the subframe of the DL CC for preparing reserved PHICH resource; Or
Reserved in the data area of the subframe of the DL CC for preparing reserved PHICH resource; Or
Reserved in the segment area of the subframe of the DL CC for preparing reserved PHICH resource.
10. a user equipment (UE), is characterized in that, comprising:
The second processing module, for determining on DL CC to be the reserved PHICH zone of described UL CC according to not paired UL CC index;
The 3rd processing module, for first PRB index according to UL CC is not used in the transfer of data of current subframe in pairs, determine on described PHICH zone to be reserved PHICH group index and the PHICH index of described UL CC;
The first acquisition module, the ACK/NACK response message that obtains base station feedback for the described PHICH group index according to described PHICH zone and PHICH index.
11. the system of a PHICH channel allocation, is characterized in that, comprising:
Base station, the PHICH group PHICH group number that uplink member carrier UL CC need to be not reserved in pairs be connected with the downlink member carrier DL CC of reserved PHICH resource for calculating each; By all not PHICH group number summations that UL CC need to be reserved in pairs, obtain needing reserved PHICH group total number; According to described reserved PHICH group total number, it is the reserved PHICH group resource of not paired UL CC; Reserved PHICH group resource is distributed to not to UL CC in pairs;
UE, for determining on DL CC to be the reserved PHICH zone of described UL CC according to not paired UL CC index; According to first PRB index that UL CC is not used in the transfer of data of current subframe in pairs, determine on described PHICH zone to be reserved PHICH group index and the PHICH index of described UL CC; The ACK/NACK response message that obtains base station feedback according to described PHICH group index and the PHICH index in described PHICH zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910108612.1A CN101938793B (en) | 2009-07-02 | 2009-07-02 | Method and equipment for allocating PHICH |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910108612.1A CN101938793B (en) | 2009-07-02 | 2009-07-02 | Method and equipment for allocating PHICH |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101938793A CN101938793A (en) | 2011-01-05 |
| CN101938793B true CN101938793B (en) | 2014-01-08 |
Family
ID=43391867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910108612.1A Active CN101938793B (en) | 2009-07-02 | 2009-07-02 | Method and equipment for allocating PHICH |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101938793B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012142772A1 (en) * | 2011-04-22 | 2012-10-26 | 富士通株式会社 | Method for configuring resources, method for sending response signal, base station and user equipment |
| CN103718603A (en) * | 2011-04-28 | 2014-04-09 | 美国博通公司 | Phich reserved resources with cc-specific tdd ul/dl configurations |
| KR101829258B1 (en) | 2011-07-18 | 2018-03-29 | 삼성전자 주식회사 | Method and apparatus for transmission of harq response channel in wireless ofdm communication system |
| CN105490796B (en) * | 2012-01-09 | 2018-11-09 | 华为技术有限公司 | A kind of control channel transmission, method of reseptance and base station, user equipment |
| CN103873215B (en) * | 2012-12-17 | 2017-12-05 | 中兴通讯股份有限公司 | Strengthen physical hybrid automatic repeat request indicator channel transmission method and device |
| CN104349469B (en) * | 2013-08-01 | 2018-03-06 | 上海诺基亚贝尔股份有限公司 | A kind of method and device for carrying out resource allocation within a wireless communication network |
| CN107534960B (en) * | 2015-05-11 | 2020-04-14 | 华为技术有限公司 | Method and device for determining physical hybrid automatic repeat request indicator channel resources |
| CN106850045B (en) * | 2017-01-17 | 2020-04-24 | 北京邮电大学 | Self-adaptive over-subscription LEO satellite system channel allocation method |
| CN108966181B (en) * | 2017-05-26 | 2021-07-23 | 株式会社Kt | Method for configuring frequency resources for component carriers for new radio and apparatus therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101227261A (en) * | 2008-02-04 | 2008-07-23 | 中兴通讯股份有限公司 | Distribution method of physics commingle retransmission indicating channel resource |
| CN101399647A (en) * | 2007-09-30 | 2009-04-01 | 北京三星通信技术研究有限公司 | Method for configuring hybrid automatic retransmission request indication channel |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8279811B2 (en) * | 2007-10-30 | 2012-10-02 | Motorola Mobility Llc | Allocating downlink acknowledgement resources in wireless communication networks |
| MX2010004702A (en) * | 2007-12-10 | 2010-05-13 | Ericsson Telefon Ab L M | Improved scheduling in a cellular system. |
-
2009
- 2009-07-02 CN CN200910108612.1A patent/CN101938793B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101399647A (en) * | 2007-09-30 | 2009-04-01 | 北京三星通信技术研究有限公司 | Method for configuring hybrid automatic retransmission request indication channel |
| CN101227261A (en) * | 2008-02-04 | 2008-07-23 | 中兴通讯股份有限公司 | Distribution method of physics commingle retransmission indicating channel resource |
Non-Patent Citations (2)
| Title |
|---|
| Samsung.PHICH Mapping in Asymmetric Carrier Aggregation.《3GPP TSG RAN WG1 Meeting #56bis》.2009,全文. * |
| Samsung.PHICH Transmission in LTE-A.《3GPP TSG RAN WG1 #56bis》.2009,全文. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101938793A (en) | 2011-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101938793B (en) | Method and equipment for allocating PHICH | |
| US11419115B2 (en) | Method and apparatus of data transmission in next generation cellular networks | |
| US11337244B2 (en) | Scheduling subband allocation method and apparatus, and device and readable storage medium | |
| EP3927077A1 (en) | Signal transmission and reception method for unlicensed band communication, and apparatus therefor | |
| US9661624B2 (en) | Resource allocation signalling | |
| JP5108954B2 (en) | Scheduling method for distributed virtual resource block | |
| JP5193307B2 (en) | Scheduling method for distributed virtual resource block | |
| CN107734665B (en) | Resource indication method, resource determination method, resource indication device, resource determination device, network side equipment and mobile communication terminal | |
| EP3826211A1 (en) | Signal transmission method, apparatus, device, and computer storage medium | |
| EP2894915B1 (en) | Control channel detection method and user equipment | |
| CN107294897B (en) | Downlink information sending and receiving method and device | |
| CN102801503B (en) | The method and apparatus that the method that control channel maps, control channel detect | |
| US20180343094A1 (en) | Methods for transmitting and receiving control channel, base station, and user equipment | |
| US20150023290A1 (en) | Channel searching method, device, and system | |
| CN107809306B (en) | Method and device for UE (user equipment) and base station in wireless transmission | |
| JP2014161030A (en) | Method for scheduling distributed virtual resource blocks | |
| JP6167212B2 (en) | Scheduling method for distributed virtual resource block | |
| WO2017028071A1 (en) | Downlink control information receiving and sending methods and devices | |
| CN112713980A (en) | Internet of vehicles communication transmission control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |