CN102149202A - Method and device for distributing uplink feedback resources - Google Patents
Method and device for distributing uplink feedback resources Download PDFInfo
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- CN102149202A CN102149202A CN201010110993XA CN201010110993A CN102149202A CN 102149202 A CN102149202 A CN 102149202A CN 201010110993X A CN201010110993X A CN 201010110993XA CN 201010110993 A CN201010110993 A CN 201010110993A CN 102149202 A CN102149202 A CN 102149202A
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Abstract
The invention discloses a method and device for distributing uplink feedback resources. By using a technical scheme proposed in an embodiment of the invention, a relay node can determine a virtual CCE (Control Channel Element) number according to PRB (Physical Resource Block) set information sent by a base station, maximum CCE number information obtained by the relay node and the number of a first CCE actually used by downlink control information corresponding to the relay node in a PRB set so as to determine uplink feedback resources of a backhaul link and avoid conflictions between resources corresponding to different relay node devices.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of up feedback resource distribution method and equipment.
Background technology
LTE (Long Term Evolution, Long Term Evolution) system, it is the evolution system of 3-G (Generation Three mobile communication system), and LTE-Advanced (Long Term Evolution Advanced, senior Long Term Evolution) is the evolution system upgrading of 3-G (Generation Three mobile communication system), in the LTE-Advanced system, will adopt the service quality and the Extended Cell of the method raising Cell Edge User of relaying (Relay) cooperation transmission to cover.
Accordingly, defined the via node of following type:
1、Type?I?relay
" Type 1 " relay is the part of LTE-A at least." Type 1 " relay is a relay node in the band, has following feature:
RN (Relay Node, via node) controls the sub-district, and from the user, each sub-district is distinguished mutually with supplying with the sub-district, is an independently sub-district.
Each sub-district has the physical district ID (LTE Rel-8 defines) of increase, and RN can send synchronizing channel, the reference symbol of oneself.
Operation for single sub-district, UE (User Equipment, subscriber equipment) should be directly from RN receiving scheduling information and HARQ (Hybrid Automatic Repeat Request, mix automatic repeat requests) feedback, and the control channel of transmission UE is to RN, wherein, the control channel of UE comprises SR (SchedulingRequest, dispatch request)/CQI (Channel Quality Indicator, channel quality indication)/ACK (Acknowledgement, positive acknowledgement).
Concerning R8, RN seems to be exactly R8eNB (being backward compatibility).
For LTE-A UEs, it is different with Rel-8eNodeB that type 1RN may seem, to allow further performance optimization.
2, link is divided
After the LTE-A system introduces via node, make that the Radio Link based on the mobile communication system of Relay has three, as shown in Figure 1:
Node wherein comprises:
Donor-eNB: with RN equipment the eNB of wireless connections is arranged, be abbreviated as DeNB;
Relay-Node: be present in the entity between DeNB and the UE, be abbreviated as RN equipment;
Relay-UE: the UE with RN equipment carries out data interaction is abbreviated as R-UE;
Grand UE: directly and the DeNB UE that carries out data interaction.
Interface comprises:
Un interface: the interface between RN equipment and the DeNB;
Interface between Uu interface: UE and the RN equipment.
Radio Link comprises:
Backhaul link: back haul link, with Un interface link corresponding;
Access link: access link, with Uu interface link corresponding;
Direct link: the direct projection link, DeNB and grand UE carry out the link of transfer of data.
Consider the signal interference-limited of radio communication, therefore, three links need use the Radio Resource of quadrature.Because being half, the transceiver of via node divides duplex (Time Division Duplexing, TDD) mode of operation, the Backhaul link takies different time slots with the Access link in the tdd frame structure, but Direct link and Backhaul link are can be coexistent, as long as its running time-frequency resource quadrature.
3, back haul link transmission
RN adopts MBSFN (Multimedia Braodcast Single Frequency Network, multicast single frequency network) subframe receives the downlink data that the base station sends, the control area of MBSFN subframe takies 1 or 2 OFDM (Orthogonal Frequency Division Multiplexing, OFDM) symbol is used for RN and transmits control signal to the UE of its service (R-UE).In the downlink transfer of back haul link, RN can't receive control area PDCCH (the Physical Downlink Control Channel of base station, Physical Downlink Control Channel), therefore, a zone need be created in PDSCH (Physical Downlink SharedChannel, Physical Downlink Shared Channel) zone in the base station, is used for transmitting control signal to RN, claim that this zone is the R-PDCCH zone, its structural representation as shown in Figure 2.
FDM (Frequency Division Multiplexing can be adopted in the R-PDCCH zone, frequency division multiplexing) or TDM (Time Division Multiplexing, frequency division multiplexing)+the FDM mode divides, when adopting the FDM mode to divide, this zone takies all OFDM symbolic numbers in PDSCH zone in time domain, take part PRB (Physical Resource Block, Physical Resource Block) at frequency domain; When adopting the TDM+FDM mode to divide, this zone takies the part of O FDM symbolic number in PDSCH zone, takies part PRB at frequency domain.
4, PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) resource allocation
For the FDD system, in subframe n, UE uses PUCCH resource n
PUCCH (1)Transmitting HARQ-ACK (Hybrid Automatic Repeat Request Acknowledgement mixes automatic repeat requests positive acknowledgement), wherein:
In subframe n-4, for the PDCCH of PDSCH that PDCCH (s) indication is arranged or the release of indication SPS resource, resource number that UE uses is
N wherein
CCEBe employed first CCE of corresponding DCI (Control Channel Elment, control channel unit) numbering, N
PUCCH (1)Dispose by high level.
In subframe n-4, for the PDSCH that does not have the PDCCH indication, n
PUCCH (1)Dispose jointly by high-rise and table 1.
Table 1: the PUCCH resource index of descending semi-continuous scheduling
| ' TPC command for CH ' value | ?n PUCCH (1) |
| ‘00’ | First PUCCH resource index is disposed by high level |
| ‘01’ | Second PUCCH resource index disposed by high level |
| ‘10’ | The 3rd PUCCH resource index disposed by high level |
| ‘11’ | The 4th PUCCH resource index disposed by high level |
For the TDD system, ACK/NACK bundling or ACK/NACK multiplexing, during M=1, in subframe n, UE uses PUCCH resource number n
PUCCH (1)Transmitting HARQ-ACK, wherein:
In subframe n-k, if the PDCCH that has the PDSCH of PDCCH (s) indication or exist indication SPS resource to discharge, k ∈ K wherein, K is the set { k that comprises an element
0, k
1... k
M-1, the value of M relevant with uplink-downlink configuration (as shown in table 2), UE at first will from set 0,1,2, select a p value among the 3}, satisfy N
p≤ n
CCE＜N
P+1, n wherein
CCEBe subframe n-k
mThe call number of middle employed first CCE of PDCCH, wherein k
mFor gathering the minimum value among the K and satisfying UE at subframe n-k
mIn detected this condition of PDCCH.
In subframe n-k (k ∈ K),, there is not corresponding PDCCH to indicate it, n if having only the PDSCH transmission
PUCCH (1)Dispose jointly by high-rise and table 1.
For TDD ACK/NACK multiplexing, M＞1 o'clock, in subframe n, definition n
PUCCH, i (1)For by subframe n-k
iThe ACK/NACK feedback resources that obtains number, HARQ-ACK (i) is subframe n-k
iThe specifying information of pairing ACK/NACK/DTX feedback, wherein k
i∈ K, as shown in table 2,0≤i≤M-1:
For subframe n-k
iIn PDSCH or the PDCCH that discharges of indication SPS resource, wherein k
i∈ K,
Wherein p ∈ 0,1,2,3}, and satisfy N
p≤ n
CCE＜N
P+1,
n
CCE, iBe subframe n-k
iThe call number of middle employed first CCE of PDCCH, N
PUCCH (1)Be high-rise configuration parameter.
For at subframe n-k
iIn do not have the PDSCH of PDCCH indication, n
PUCCH, i (1)Dispose jointly by high-rise and table 1.
The descending relative set index of table 2:TDD K:{k
0, k
1... k
M-1}
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
In the R-PDCCH channel design, the base station is PRB set of one group of semi-static distribution of RN equipment, this PRB set comprises a plurality of continuous or discrete PRB, after interweaving, the Downlink Control Information of this group RN equipment correspondence is mapped in this PRB set only blind check in this PRB set when each RN equipment receives Downlink Control Information.When having a plurality of RN equipment group, need to distribute a plurality of PRB set, CCE numbering in each PRB set is identical, the numbering of first CCE that the Downlink Control Information of then different RN equipment correspondences uses may be identical, if determine corresponding up A/N resource according to this CCE numbering, may cause the A/N resource contention.
Summary of the invention
The invention provides a kind of up feedback resource distribution method and equipment, via node can be according to the PRB aggregate information of base station transmission, the maximum CCE information of number of self obtaining and in PRB set the numbering of first CCE of the Downlink Control Information actual use corresponding with via node, determine virtual CCE numbering, thereby determine the up feedback resources of back haul link.
For achieving the above object, one aspect of the present invention provides a kind of up feedback resource distribution method, may further comprise the steps:
The information of the Physical Resource Block PRB set that is distributed with self corresponding Downlink Control Information that via node receives that the base station sends, wherein, described PRB aggregate information comprises in the described PRB set the pairing numbering of all PRB and PRB and gathers pairing numbering;
Described via node obtains maximum CCE number, and wherein said maximum CCE quantity is the quantity that comprises the control channel unit CCE that is comprised in the PRB set of maximum PRB quantity in the current system;
The information that described via node is gathered according to the PRB that receives, the numbering of maximum CCE quantity of obtaining and the Downlink Control Information corresponding actual first CCE that uses in the PRB set, the virtual CCE numbering that is identified for distributing up feedback resources with self;
Described via node is determined the up feedback resources of back haul link according to described virtual CCE number information and resource allocation rule.
Preferably, the information of the PRB set that is distributed with self corresponding Downlink Control Information that described via node receives that the base station sends, wherein, described PRB aggregate information comprises the interior pairing numbering of all PRB of described PRB set and PRB gathers pairing numbering, is specially:
The quantity of the PRB set that described base station is determined to exist in the current system, and be numbered for each PRB gathers;
Described base station sends the information that corresponding PRB gathers by high-level signaling to each via node, wherein comprises interior pairing numbering of all PRB of described PRB set and PRB and gathers pairing numbering.
Preferably, described via node obtains maximum CCE quantity, and wherein said maximum CCE quantity is the quantity that comprises the CCE that is comprised in the PRB set of maximum PRB quantity in the current system, specifically comprises:
CCE quantity in existing each PRB set in the current system not simultaneously, described via node receives the maximum CCE quantity information that described base station sends;
When the CCE quantity in existing each PRB set in the current system was identical, the CCE quantity in each PRB set that described via node is determined to preset was as maximum CCE quantity.
Preferably, described via node is according to the information of the PRB set that receives, the numbering of maximum CCE quantity of obtaining and the Downlink Control Information corresponding actual first CCE that uses in the PRB set with self, the virtual CCE numbering that is identified for distributing up feedback resources is specially:
Described via node is identified for distributing the virtual CCE numbering of up feedback resources according to following formula:
Virtual CCE numbering=PRB gathers pairing numbering * maximum CCE quantity+numbering of actual first CCE that uses in the PRB set.
Preferably, described via node is determined the up feedback resources of back haul link according to described virtual CCE numbering and resource allocation rule, is specially:
When the up-downgoing time-domain resource of described back haul link was in equal proportions, via node was determined the up feedback resources of back haul link according to Physical Uplink Control Channel PUCCH resource allocation rule under virtual CCE numbering and the FDD pattern;
When the up-downgoing time-domain resource ratio of described back haul link was unequal, via node was determined the up feedback resources of back haul link according to PUCCH resource allocation rule under virtual CCE numbering and the TDD pattern.
On the other hand, the embodiment of the invention also provides a kind of via node, comprising:
Receiver module, be used to receive the information of the Physical Resource Block PRB set that the base station sends is distributed with self corresponding Downlink Control Information, wherein, described PRB aggregate information comprises in the described PRB set the pairing numbering of all PRB and PRB and gathers pairing numbering;
Acquisition module is used to obtain maximum CCE quantity, and wherein said maximum CCE quantity is the quantity that comprises the control channel unit CCE that is comprised in the PRB set of maximum PRB quantity in the current system;
Determination module, the information that the PRB that receives according to described receiver module gathers, the numbering of maximum CCE quantity that described acquisition module obtains and the Downlink Control Information corresponding actual first CCE that uses in the PRB set with self, be identified for distributing the virtual CCE numbering of up feedback resources, and, determine the up feedback resources of back haul link according to virtual CCE number information and the resource allocation rule determined.
Preferably, described acquisition module is used to obtain and is used to obtain maximum CCE quantity,, wherein said maximum CCE quantity is the quantity that comprises the control channel unit CCE that is comprised in the PRB set of maximum PRB quantity in the current system, specifically comprises:
CCE quantity in existing each PRB set in the current system not simultaneously, described receiver module receives the maximum CCE quantity that described base station sends, described acquisition module obtains maximum CCE quantity from the received information of described receiver module;
When the CCE quantity in existing each PRB set in the current system was identical, described acquisition module obtained the CCE quantity in each default PRB set, and the CCE quantity in each PRB set of determining to preset is as maximum CCE quantity.
Preferably, described determination module is identified for distributing the virtual CCE numbering of up feedback resources according to following formula:
Virtual CCE numbering=PRB gathers pairing numbering * maximum CCE quantity+numbering of actual first CCE that uses in the PRB set.
Preferably, described determination module also is used for determining the up feedback resources of back haul link according to virtual CCE number information and the resource allocation rule determined, is specially:
When the up-downgoing time-domain resource of described back haul link was in equal proportions, described determination module was determined the up feedback resources of back haul link according to PUCCH resource allocation rule under virtual CCE numbering and the fdd mode;
When the up-downgoing time-domain resource ratio of described back haul link was unequal, described determination module was determined the up feedback resources of back haul link according to PUCCH resource allocation rule under virtual CCE numbering and the tdd mode.
On the other hand, the embodiment of the invention also provides a kind of base station, comprising:
Determination module, the quantity of the PRB set that is used for determining that current system exists, and be numbered for each PRB gathers;
Sending module is used for sending the information that corresponding PRB gathers by high-level signaling to each via node, wherein comprises described determination module interior pairing number information of all PRB of determined PRB set and PRB and gathers pairing numbering.
Preferably, CCE quantity in existing each PRB set in the current system is not simultaneously, described sending module, also be used for sending maximum CCE information of number to each via node, wherein said maximum CCE quantity is the quantity that comprises the CCE that is comprised in the PRB set of maximum PRB quantity in the current system.
Compared with prior art, the present invention has the following advantages:
By using the technical scheme that the embodiment of the invention proposed, via node can be according to the PRB aggregate information of base station transmission, the maximum CCE information of number of self obtaining and in PRB set the numbering of first CCE of the Downlink Control Information actual use corresponding with via node, determine virtual CCE numbering, thereby determine the up feedback resources of back haul link, and avoid the pairing resource of different via node equipment to clash.
Description of drawings
Fig. 1 is the structural representation of LTE-A of the prior art system;
Fig. 2 is the structural representation in R-PDCCH of the prior art zone;
Fig. 3 is the schematic flow sheet of a kind of up feedback resource distribution method in the embodiment of the invention;
Fig. 4 is the schematic flow sheet of up feedback resource distribution method under a kind of concrete scene in the embodiment of the invention;
Fig. 5 comprises the schematic diagram of similar number PRB for the different PRB set in the embodiment of the invention;
Fig. 6 comprises the schematic diagram of different number P RB for each the PRB set in the embodiment of the invention;
Fig. 7 is the structural representation of a kind of via node in the embodiment of the invention;
Fig. 8 is the structural representation of a kind of base station in the embodiment of the invention.
Embodiment
As shown in Figure 3, the schematic flow sheet of a kind of up feedback resource distribution method that provides for the embodiment of the invention, this method specifically may further comprise the steps:
The information of the Physical Resource Block PRB set that is distributed with self corresponding Downlink Control Information that step S301, via node receive that the base station sends.
Wherein, the PRB aggregate information comprises in the PRB set the pairing numbering of all PRB and PRB and gathers pairing numbering.
Concrete, the information in this step specifically generates by following flow process:
The quantity of the PRB set that the base station is determined to exist in the current system, and be numbered for each PRB gathers;
The base station sends the information that corresponding PRB gathers by high-level signaling to each via node, wherein comprises interior pairing numbering of all PRB of PRB set and PRB and gathers pairing numbering.
Step S302, via node obtain maximum CCE number.
Wherein, maximum CCE quantity is the quantity that comprises the control channel unit CCE that is comprised in the PRB set of maximum PRB quantity in the current system.
CCE quantity in existing each PRB set in the current system not simultaneously, via node receives the maximum CCE quantity information that the base station sends;
When the CCE quantity in existing each PRB set in the current system was identical, the CCE quantity in each PRB set that via node is determined to preset was as maximum CCE quantity.
The information that step S303, via node are gathered according to the PRB that receives, the numbering of maximum CCE quantity of obtaining and the Downlink Control Information corresponding actual first CCE that uses in the PRB set with self, the virtual CCE numbering that is identified for distributing up feedback resources.
Via node is identified for distributing the virtual CCE numbering of up feedback resources according to following formula:
Virtual CCE numbering=PRB gathers pairing numbering * maximum CCE quantity+numbering of actual first CCE that uses in the PRB set.
Step S304, via node are determined the up feedback resources of back haul link according to virtual CCE number information and resource allocation rule.
In concrete application scenarios, the realization flow of this step is specially:
When the up-downgoing time-domain resource of back haul link was in equal proportions, via node was determined the up feedback resources of back haul link according to Physical Uplink Control Channel PUCCH resource allocation rule under virtual CCE numbering and the FDD pattern;
When the up-downgoing time-domain resource ratio of back haul link was unequal, via node was determined the up feedback resources of back haul link according to PUCCH resource allocation rule under virtual CCE numbering and the TDD pattern.
Wherein, when the up-downgoing resource symmetrical distribution of back haul link, the resource allocation rule is specially Physical Uplink Control Channel PUCCH resource allocation rule under the FDD pattern;
When the up-downgoing resource timing in asymmetric minute of back haul link, the resource allocation rule is specially PUCCH resource allocation rule under the TDD pattern.
Compared with prior art, the present invention has the following advantages:
By using the technical scheme that the embodiment of the invention proposed, via node can be according to the PRB aggregate information of base station transmission, the maximum CCE information of number of self obtaining and in PRB set the numbering of first CCE of the Downlink Control Information actual use corresponding with via node, determine virtual CCE numbering, thereby determine the up feedback resources of back haul link, and avoid the pairing resource of different via node equipment to clash.
Below, the application scenarios in conjunction with concrete is elaborated to the technical scheme that the embodiment of the invention proposed.
The present invention proposes a kind of scheme of distributing up feedback resources, can avoid up feedback resources conflict, and so up feedback resources mainly is for feeding back ACK/nack message, and idiographic flow may further comprise the steps as shown in Figure 4:
The number of PRB set in the relaying down control channel zone is determined in step S401, base station, and with PRB set numbering.
Step S402, base station will be notified to each RN by high-level signaling for the index of the PRB in the PRB set of each RN devices allocation, and the numbering that will gather also is notified to each RN.
The number of the CCE in the different PRB set is determined in step S403, base station, if the PRB number difference that each PRB set comprises, then the number of CCE is also inequality, and the base station sends to each RN equipment with the number of the CCE of maximum; If the PRB number of sets that each PRB set comprises is identical, the number of CCE is also identical, can then not need the base station that the number of CCE is notified to RN equipment by the size of standard code PRB set and the number of CCE.
Step S404, when the CCE number that comprises when each PRB set is inequality, RN equipment is determined the virtual CCE numbering that each RN equipment uses according to the numbering of the PRB set that receives with maximum CCE number, promptly
N wherein
GroupBe the numbering of PRB set, N
MaxBe the CCE number of maximum, n
CCE UsedNumbering for RN equipment CCE of use in the PRB set; When each PRB set comprises identical CCE number, then with the N in this CCE number replacement following formula
Max, determine the virtual CCE numbering of using;
Step S405, RN equipment distribute ascending resource according to virtual numbering of CCE and corresponding allocation rule.
If the ascending-descending subframes quantitative proportion of back haul link equates, promptly in each sub-frame of uplink, only send the A/N of a descending sub frame correspondence, then adopt the PUCCH Resource Allocation Formula of FDD in first CCE corresponding virtual CCE numbering that RN equipment uses and the Rel-8 standard to determine the up A/N resource of this RN equipment;
If the ascending-descending subframes quantitative proportion of back haul link is unequal, promptly in each sub-frame of uplink, need to send the A/N of a plurality of descending sub frame correspondences, then need to determine the descending relative set index shown in the table 2 as the aforementioned, adopt the PUCCH Resource Allocation Formula of TDD in first CCE corresponding virtual CCE numbering that RN equipment uses and the Rel-8 standard to determine the up A/N resource of this RN equipment then.
Further, the enforcement scene in conjunction with concrete describes the technical scheme that the embodiment of the invention proposed, and as shown in Figure 5, comprises the schematic diagram of similar number PRB for different PRB set.
As shown in Figure 5, the R-PDCCH zone comprises M PRB set, and each PRB set comprises the PRB of similar number, and the PRB that comprises is continuous or discrete distribution.Suppose that each PRB set comprises N CCE altogether, numbering is respectively n=0, and 1 ..., N-1.For any PRB set m, 0≤m≤M-1, the CCE corresponding virtual CCE that is numbered n in this PRB set is numbered
0≤m≤M-1, n=0,1 ..., N-1.
The CCE that the descending control signaling of supposing certain RN equipment correspondence uses in PRB set m is numbered n=k, and then its corresponding virtual CCE is numbered
0≤k≤N-1.Suppose that simultaneously at back haul link symmetrical distribution ascending-descending subframes, then the A/N resource of this RN equipment correspondence is
N
PUCCH (1)Dispose by high level.
Comprise under the situation of identical CCE number in the PRB set, the virtual CCE between two continuous PRB set is numbered continuous, can not cause the up A/N wasting of resources.
On the other hand, as shown in Figure 6, comprise the schematic diagram of different number P RB for each PRB set.
As shown in Figure 6, the R-PDCCH zone comprises M PRB set, and the PRB number that different PRB set comprises may be different, and the PRB in each PRB set is continuous or discrete.Suppose that the CCE number that any PRB set m comprises is N
m, the maximum CCE number that then comprises is N
Max=max (N
0, N
1..., N
M-1), the base station is with N
MaxBe notified to all RN equipment.
For any PRB set m, 0≤m≤M-1, the numbering of the CCE that it comprises is respectively n=0, and 1 ..., N
m-1, the CCE corresponding virtual CCE that then is numbered n is numbered
N=0,1 ..., N
m-1.
The CCE that the descending control signaling of supposing certain RN equipment correspondence uses in PRB set m is numbered n=k, and then its corresponding virtual CCE is numbered
0≤k≤N-1.Suppose that simultaneously at back haul link symmetrical distribution ascending-descending subframes, then the A/N resource of this RN equipment correspondence is
N
PUCCH (1)Dispose by high level.
Comprise under the situation of different CCE numbers in the PRB set, the virtual CCE numbering between two continuous PRB set may not be continuous, may cause the up A/N wasting of resources.Such as gathering i and i+1 for PRB, the CCE number that it comprises is respectively N
iAnd N
I+1, and N
i＜N
Max, then in PRB set i, be numbered N
i-1 CCE corresponding virtual CCE is numbered
Being numbered 0 CCE corresponding virtual CCE in PRB set i+1 is numbered
Because N
i＜N
Max, not continuous between first CCE corresponding virtual CCE numbering in last CCE corresponding virtual CCE numbering and the PRB set i+1 in the PRB set i, be spaced apart N
Max-N
i+ 1, the therefore interior at interval corresponding up A/N resource of virtual CCE numbering is wasted.
Compared with prior art, the present invention has the following advantages:
By using the technical scheme that the embodiment of the invention proposed, via node can be according to the PRB aggregate information of base station transmission, the maximum CCE information of number of self obtaining and in PRB set the numbering of first CCE of the Downlink Control Information actual use corresponding with via node, determine virtual CCE numbering, thereby determine the up feedback resources of back haul link, and avoid the pairing resource of different via node equipment to clash.
In order to realize above-mentioned technical scheme proposed by the invention, the present invention also provides a kind of via node, and its structural representation comprises as shown in Figure 7:
Wherein, the CCE quantity in existing each PRB set in the current system not simultaneously, receiver module 71 receives the maximum CCE quantity that base stations send, acquisition module 72 obtains maximum CCE quantity from the received information of receiver module 71;
When the CCE quantity in existing each PRB set in the current system was identical, acquisition module 72 obtained the CCE quantity in each default PRB set, and the CCE quantity in each PRB set of determining to preset is as maximum CCE quantity.
Concrete, determination module 73 is identified for distributing the virtual CCE numbering of up feedback resources according to following formula:
Virtual CCE numbering=PRB gathers pairing numbering * maximum CCE quantity+numbering of actual first CCE that uses in the PRB set.
When the up-downgoing time-domain resource of back haul link was in equal proportions, determination module 73 was determined the up feedback resources of back haul link according to PUCCH resource allocation rule under virtual CCE numbering and the fdd mode;
When the up-downgoing time-domain resource ratio of back haul link was unequal, determination module 73 was determined the up feedback resources of back haul link according to PUCCH resource allocation rule under virtual CCE numbering and the tdd mode.
Wherein, when the up-downgoing resource symmetrical distribution of back haul link, the resource allocation rule is specially Physical Uplink Control Channel PUCCH resource allocation rule under the FDD pattern;
When the up-downgoing resource timing in asymmetric minute of back haul link, the resource allocation rule is specially PUCCH resource allocation rule under the TDD pattern.
On the other hand, the embodiment of the invention also provides a kind of base station, and its structural representation comprises as shown in Figure 8:
Sending module 82 is used for sending the information that corresponding PRB gathers by high-level signaling to each via node, wherein comprises determination module 81 interior pairing number information of all PRB of determined PRB set and PRB and gathers pairing numbering.
Wherein, CCE quantity in existing each PRB set in the current system is not simultaneously, sending module 82 also is used for sending maximum CCE information of number to each via node, and wherein maximum CCE quantity is the quantity that comprises the CCE that is comprised in the PRB set of maximum PRB quantity in the current system.
Compared with prior art, the present invention has the following advantages:
By using the technical scheme that the embodiment of the invention proposed, the information that can gather according to the PRB of the current use of each via node is the up feedback resources of each via node equipment dynamic assignment back haul link, and avoids the pairing resource of different via node equipment to clash.
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, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, 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, service end, the perhaps network equipment etc.) each implements the described method of scene to carry out the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is a preferred schematic diagram of implementing scene, module in the 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 of implementing in the scene can be distributed in the device of implementing scene according to implementing scene description, also can carry out respective change and be arranged in the one or more devices that are different from this enforcement scene.The module of above-mentioned enforcement scene can be merged into a module, also can further split into a plurality of submodules.
The invention described above sequence number is not represented the quality of implementing scene just to description.
More than disclosed only be several concrete enforcement scene of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (11)
1. a up feedback resource distribution method is characterized in that, may further comprise the steps:
The information of the Physical Resource Block PRB set that is distributed with self corresponding Downlink Control Information that via node receives that the base station sends, wherein, described PRB aggregate information comprises in the described PRB set the pairing numbering of all PRB and PRB and gathers pairing numbering;
Described via node obtains maximum CCE number, and wherein said maximum CCE quantity is the quantity that comprises the control channel unit CCE that is comprised in the PRB set of maximum PRB quantity in the current system;
The information that described via node is gathered according to the PRB that receives, the numbering of maximum CCE quantity of obtaining and the Downlink Control Information corresponding actual first CCE that uses in the PRB set, the virtual CCE numbering that is identified for distributing up feedback resources with self;
Described via node is determined the up feedback resources of back haul link according to described virtual CCE number information and resource allocation rule.
2. the method for claim 1, it is characterized in that, the information of the PRB set that is distributed with self corresponding Downlink Control Information that described via node receives that the base station sends, wherein, described PRB aggregate information comprises the interior pairing numbering of all PRB of described PRB set and PRB gathers pairing numbering, is specially:
The quantity of the PRB set that described base station is determined to exist in the current system, and be numbered for each PRB gathers;
Described base station sends the information that corresponding PRB gathers by high-level signaling to each via node, wherein comprises interior pairing numbering of all PRB of described PRB set and PRB and gathers pairing numbering.
3. the method for claim 1 is characterized in that, described via node obtains maximum CCE quantity, and wherein said maximum CCE quantity is the quantity that comprises the CCE that is comprised in the PRB set of maximum PRB quantity in the current system, specifically comprises:
CCE quantity in existing each PRB set in the current system not simultaneously, described via node receives the maximum CCE quantity information that described base station sends;
When the CCE quantity in existing each PRB set in the current system was identical, the CCE quantity in each PRB set that described via node is determined to preset was as maximum CCE quantity.
4. the method for claim 1, it is characterized in that, described via node is according to the information of the PRB set that receives, the numbering of maximum CCE quantity of obtaining and the Downlink Control Information corresponding actual first CCE that uses in the PRB set with self, be identified for distributing the virtual CCE numbering of up feedback resources, be specially:
Described via node is identified for distributing the virtual CCE numbering of up feedback resources according to following formula:
Virtual CCE numbering=PRB gathers pairing numbering * maximum CCE quantity+numbering of actual first CCE that uses in the PRB set.
5. the method for claim 1 is characterized in that, described via node is determined the up feedback resources of back haul link according to described virtual CCE numbering and resource allocation rule, is specially:
When the up-downgoing time-domain resource of described back haul link was in equal proportions, via node was determined the up feedback resources of back haul link according to Physical Uplink Control Channel PUCCH resource allocation rule under virtual CCE numbering and the FDD pattern;
When the up-downgoing time-domain resource ratio of described back haul link was unequal, via node was determined the up feedback resources of back haul link according to PUCCH resource allocation rule under virtual CCE numbering and the TDD pattern.
6. a via node is characterized in that, comprising:
Receiver module, be used to receive the information of the Physical Resource Block PRB set that the base station sends is distributed with self corresponding Downlink Control Information, wherein, described PRB aggregate information comprises in the described PRB set the pairing numbering of all PRB and PRB and gathers pairing numbering;
Acquisition module is used to obtain maximum CCE quantity, and wherein said maximum CCE quantity is the quantity that comprises the control channel unit CCE that is comprised in the PRB set of maximum PRB quantity in the current system; Determination module, the information that the PRB that receives according to described receiver module gathers, the numbering of maximum CCE quantity that described acquisition module obtains and the Downlink Control Information corresponding actual first CCE that uses in the PRB set with self, be identified for distributing the virtual CCE numbering of up feedback resources, and, determine the up feedback resources of back haul link according to virtual CCE number information and the resource allocation rule determined.
7. via node as claimed in claim 6 is characterized in that, described acquisition module, be used to obtain and be used to obtain maximum CCE quantity,, wherein said maximum CCE quantity is the quantity that comprises the control channel unit CCE that is comprised in the PRB set of maximum PRB quantity in the current system, specifically comprises:
CCE quantity in existing each PRB set in the current system not simultaneously, described receiver module receives the maximum CCE quantity that described base station sends, described acquisition module obtains maximum CCE quantity from the received information of described receiver module;
When the CCE quantity in existing each PRB set in the current system was identical, described acquisition module obtained the CCE quantity in each default PRB set, and the CCE quantity in each PRB set of determining to preset is as maximum CCE quantity.
8. via node as claimed in claim 6 is characterized in that,
Described determination module is identified for distributing the virtual CCE numbering of up feedback resources according to following formula:
Virtual CCE numbering=PRB gathers pairing numbering * maximum CCE quantity+numbering of actual first CCE that uses in the PRB set.
9. via node as claimed in claim 6 is characterized in that, described determination module also is used for determining the up feedback resources of back haul link according to virtual CCE number information and the resource allocation rule determined, is specially:
When the up-downgoing time-domain resource of described back haul link was in equal proportions, described determination module was determined the up feedback resources of back haul link according to PUCCH resource allocation rule under virtual CCE numbering and the fdd mode;
When the up-downgoing time-domain resource ratio of described back haul link was unequal, described determination module was determined the up feedback resources of back haul link according to PUCCH resource allocation rule under virtual CCE numbering and the tdd mode.
10. a base station is characterized in that, comprising:
Determination module, the quantity of the PRB set that is used for determining that current system exists, and be numbered for each PRB gathers;
Sending module is used for sending the information that corresponding PRB gathers by high-level signaling to each via node, wherein comprises described determination module interior pairing number information of all PRB of determined PRB set and PRB and gathers pairing numbering.
11. base station as claimed in claim 10 is characterized in that,
CCE quantity in existing each PRB set in the current system is not simultaneously, described sending module, also be used for sending maximum CCE information of number to each via node, wherein said maximum CCE quantity is the quantity that comprises the CCE that is comprised in the PRB set of maximum PRB quantity in the current system.
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