CN103298119A - Indication and confirmation method and device for time-frequency resource - Google Patents
Indication and confirmation method and device for time-frequency resource Download PDFInfo
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- CN103298119A CN103298119A CN2012100508452A CN201210050845A CN103298119A CN 103298119 A CN103298119 A CN 103298119A CN 2012100508452 A CN2012100508452 A CN 2012100508452A CN 201210050845 A CN201210050845 A CN 201210050845A CN 103298119 A CN103298119 A CN 103298119A
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Abstract
The invention relates to the field of communication and discloses an indication and confirmation method and device for a time-frequency resource. The method includes the steps that a base station notifies UE of system bandwidths of at least two transmission points, selects the system bandwidth of at least one transmission point from the system bandwidths as a target bandwidth with a preset method, allocates the time-frequency resource to the UE according to the at least one target bandwidth and carries out time-frequency resource indication in at least one downlink signal; the UE selects the system bandwidth of at least one transmission point as a target bandwidth from the acquired system bandwidths of at least two transmission points with the same preset method and confirms the time-frequency resource allocated by the base station side based on the acquired at least one target bandwidth according to the received at least one downlink signal. Thus, under the condition that system bandwidths of all transmission points in a cooperation set possibly differ from one another, agreed indication of the time-frequency resource is achieved in CoMP transmission, and therefore the UE can receive data effectively based on the acquired time-frequency resource.
Description
Technical field
The present invention relates to the communications field, particularly a kind of indication of running time-frequency resource and confirmation method and device.
Background technology
LTE-A (Long Time Evolved-Advanced, long-term evolution upgrading) system adopts identical networking, when increasing substantially the availability of frequency spectrum, also can cause the subscriber signal decline of cell edge seriously to be subjected to the higher interference from other residential quarters simultaneously, if signal fadeout and interference problem are not handled, will have a strong impact on the experience of edge customer.CoMP (multipoint cooperative) technology not only can improve signal quality and also can reduce presence of intercell interference, thereby can increase substantially the data transmission performance of Cell Edge User by introducing information interaction and the joint transmission between many residential quarters.
Present multipoint cooperative transmission plan roughly can be divided into 3 classes: DPS (dynamic point selection, the dynamic transmission point selection), CBF (coordinated beamforming, the cooperative beam figuration) and JT (joint transmission, joint transmission), also can adopt the hybrid plan of above 3 class transmission plans, for example, DPS and CBF combine, the main point that transmits is determined by Dynamic Selection, and is realized cooperative beam figuration etc. by combined dispatching between the non-main transmission outer cooperation transmission point.
Adopt the CoMP technology, other one or more transmission points can participate in the transfer of data to a certain UE (user equipment, subscriber equipment) in service point (i.e. main transmission point) and/or the cooperation set.In order to guarantee that UE effectively receives data, need carry out the running time-frequency resource of transfer of data by signaled UE.
Have only service point to provide transfer of data for UE in the existing LTE-A system, carry out the running time-frequency resource of transfer of data by a kind of UE of informing in the following three kinds of resources distribution of DCI (downlink control information, descending control signaling) the employing type.
Resource is distributed type 0: with system bandwidth
Be divided into N
RBGIndividual RBG (resource block group, Resource Block group), each RBG comprises P RB (resource block, Resource Block),
Wherein
Expression is not less than the smallest positive integral of x, and N is set
RBGIndividual bit and N
RBGIndividual RBG is to being one-to-one relationship, by this N
RBGIndividual bit is indicated each RBG whether to distribute to UE and is used; Wherein, the value of P is relevant with system bandwidth, is specially:
Table 1
Resource is distributed Class1: with system bandwidth
Be divided into N
RBGIndividual RBG, each RBG comprise P RB,
And with N
RBGIndividual RBG is divided into P RBG set, adopts
Individual bit is indicated each RBG set whether to distribute to UE and is used, and arranges
In individual bit and the selected RBG set
Individual RB is one-to-one relationship, by this
Individual bit is indicated in the selected RBG set
Whether each RB among the individual RB distributes to UE is used; Wherein, the value of P is relevant with system bandwidth, and is specifically as shown in table 1.
Resource is distributed type 2: by the mapping relations of 1 bit indication VRB to PRB, adopt
Individual bit is indicated employed VRB.
For DCI form 1A, 1B or 1D, RIV (resource indication value, resource indicated value) provides the super beginning resource number RB of employed VRB
StartNumber L with employed VRB
CRBs, wherein, RIV is defined as:
If,
Then
Otherwise,
Wherein, L
CRBs〉=1 and be no more than
For DCI form 1C, RIV begins resource number corresponding to VRB
Number with employed VRB
Wherein,
With value and system bandwidth relevant, specifically as shown in table 2.
Table 2
As seen, the content of resource indication is relevant with system bandwidth with employed bit number average.
Under the prior art, when adopting the CoMP technology, other one or more transmission points can participate in the transfer of data to a certain UE in service point and/or the cooperation set.Because applied environment and manufacturer is different, the system bandwidth that each transmission point is supported when real work in the cooperation set may have nothing in common with each other, and the content of resource indication is relevant with system bandwidth, (namely CoMP transmission in) needs to determine that carrying out resource by the system bandwidth of which transmission point in the cooperation set indicates in this case, at present, do not formulate clear and definite method as yet.
Summary of the invention
The embodiment of the invention provides a kind of indication and confirmation method and device of running time-frequency resource, in order to realize the unified indication of running time-frequency resource in the CoMP transmission.
The concrete technical scheme that the embodiment of the invention provides is as follows:
A kind of indicating means of running time-frequency resource comprises:
Network side is notified the system bandwidths of at least two transmission points to terminal, and according to predetermined manner, from the system bandwidth of described at least two transmission points, selects at least one system bandwidth of transmitting point as the target bandwidth;
Employed running time-frequency resource when network side determines that terminal carried out transfer of data;
Network side is determined instruction content and the indicating mode of running time-frequency resource in corresponding at least one downlink signaling based on described at least one target bandwidth;
Network side mails to terminal with described at least one downlink signaling, makes terminal determine the running time-frequency resource that distributes according to described at least one downlink signaling.
A kind of confirmation method of running time-frequency resource comprises:
Terminal obtains the system bandwidth of at least two transmission points according to the network side notice, and according to the predetermined manner identical with network side, from the system bandwidth of described at least two transmission point, selects the system bandwidth of at least one transmission point as the target bandwidth;
Terminal receive that network side sends in order to carry out at least one downlink signaling of running time-frequency resource indication;
Terminal is determined the running time-frequency resource that network side distributes based at least one target bandwidth according to described at least one downlink signaling.
A kind of indicating device of running time-frequency resource comprises:
First processing unit is used for to the system bandwidth of two transmission points of terminal notice at least, and according to predetermined manner, from the system bandwidth of described at least two transmission point, selects the system bandwidth of at least one transmission point as the target bandwidth;
Second processing unit, employed running time-frequency resource when be used for determining that terminal carried out transfer of data;
The 3rd processing unit is used for based on described at least one target bandwidth, determines instruction content and the indicating mode of running time-frequency resource in corresponding at least one downlink signaling;
Communication unit is used for described at least one downlink signaling is mail to terminal, makes terminal determine the running time-frequency resource that distributes according to described at least one downlink signaling.
A kind of affirmation device of running time-frequency resource comprises:
First control unit, be used for obtaining according to the network side notice system bandwidth of at least two transmission points, and according to the predetermined manner identical with network side, from the system bandwidth of described at least two transmission point, select the system bandwidth of at least one transmission point as the target bandwidth;
Communication unit, be used for to receive that network side sends in order to carry out at least one downlink signaling of running time-frequency resource indication;
Second control unit is used for based at least one target bandwidth, determines the running time-frequency resource that network side distributes according to described at least one downlink signaling.
In the embodiment of the invention, the base station is to the system bandwidth of at least two transmission points of UE notice, therefrom select the system bandwidth of at least one transmission point as the target bandwidth according to predetermined manner again, and be that UE distributes running time-frequency resource according to this at least one target bandwidth, and at least one downlink signaling, carry out running time-frequency resource based on this at least one target bandwidth and indicate, UE is then according to the notice of base station, transmit the system bandwidth of putting from least two of obtaining according to identical predetermined manner, select the system bandwidth of at least one transmission point as the target bandwidth, and resolve based at least one downlink signaling that at least one the target bandwidth butt joint that obtains is received, thereby determine the running time-frequency resource that base station side is distributed.Like this, just in the CoMP transmission, under the situation that the system bandwidth of each transmission point may have nothing in common with each other in the cooperation set, realized the unified indication of running time-frequency resource, thereby guarantee that UE can carry out active data based on the running time-frequency resource that obtains and receive, system handles flow process under the perfect CoMP transmission has improved systematic function.
Description of drawings
Fig. 1 is base station functions structural representation in the embodiment of the invention;
Fig. 2 is termination function structural representation in the embodiment of the invention;
Fig. 3 carries out running time-frequency resource indication flow chart for base station in the embodiment of the invention to terminal.
Fig. 4 carries out running time-frequency resource for terminal in the embodiment of the invention according to the base station indication and confirms flow chart.
Embodiment
In order to improve the agreement flow process, in the embodiment of the invention, formulated a kind of method of in the CoMP transmission, carrying out the running time-frequency resource indication and confirming.
Below in conjunction with accompanying drawing the preferred embodiment of the invention is elaborated.
In the embodiment of the invention, transmission point is defined as one group of identical transmit antenna of geographical position, with the different sectors of site corresponding to different transmission points.In the CoMP transmission, directly and/or indirectly participate in sending to UE the transmission point composition cooperation transmission set of data, wherein, send PBCH (physicalbroadcast channel to UE, Physical Broadcast Channel) transmission of signaling point is called service point, and other can be called non-service point.Simultaneously, in order to realize the CoMP transmission, also need UE to the channel condition information of the corresponding transmission point of network side feedback, these set of having been fed back the transmission point of channel condition information by UE are called the feedback set again.
In the embodiment of the invention, when network side carries out the running time-frequency resource indication to UE, can use DCI to indicate PDSCH (Physical Downlink Shared Channel to UE, the downlink physical shared channel) resource allocation conditions, also can be by high-level signaling to UE E-PDCCH (Enhanced Physical Downlink Control Channel, the enhancing Physical Downlink Control Channel) resource allocation conditions, below among each embodiment, be that example is introduced with the former all, but be adapted to the latter equally.
Consult shown in Figure 1ly, in the embodiment of the invention, the base station comprises communication unit 10, first processing unit 11, second processing unit 12 and the 3rd processing unit 13, wherein,
The 3rd processing unit 13 is used for based on above-mentioned at least one target bandwidth, determines instruction content and the indicating mode of running time-frequency resource among corresponding at least one DCI;
Consult shown in Figure 2ly, in the embodiment of the invention, UE comprises communication unit 20, first control unit 21 and second control unit 22, wherein,
Second control unit 22 is used for based at least one target bandwidth, determines the running time-frequency resource of base station assigns according at least one DCI that receives.
Based on technique scheme, to consult shown in Figure 3ly, in the embodiment of the invention, the base station is as follows to the detailed process that UE carries out running time-frequency resource indication:
Step 300: the system bandwidths of at least two transmission points are notified to UE in the base station, and according to predetermined manner, from the system bandwidth of these at least two transmission points, select at least one system bandwidth of transmitting point as the target bandwidth.
Among this embodiment, the base station can represent in the cooperation transmission set any one or a plurality of transmission point, as long as can carry out the running time-frequency resource indication to UE.When transmitting the system bandwidth of point at least two of UE notices, the base station can be with the system bandwidth notice UE of the part or all of transmission point in the cooperation transmission set of UE correspondence; Perhaps, notify UE with the system bandwidth of the part or all of transmission point in the feedback set of UE correspondence; Wherein, the base station can adopt high-level signaling or DCI that above-mentioned at least two system bandwidths of transmitting point are sent to UE, further, if the base station fails to determine whether UE receives the system bandwidth of above-mentioned at least two transmission point, system normally moves for assurance, the base station can be directly be defined as the target bandwidth with the system bandwidth of the service point of UE correspondence, and carries out the running time-frequency resource indication based on this target bandwidth to UE in follow-up flow process.
On the other hand, if UE receives above-mentioned at least two system bandwidths of transmitting point that the base station sends smoothly, then the base station is according to predetermined manner, from the system bandwidth of above-mentioned at least two transmission point, select the system bandwidth of at least one transmission point as the target bandwidth, be specially: the system bandwidth of the transmission point that the base station can selective system bandwidth maximum is as the target bandwidth, the system bandwidth of transmission point that can selective system bandwidth minimum is as the target bandwidth, can select the system bandwidth of service point as the target bandwidth, and, can also select the system bandwidth of all transmission point all as target bandwidth (namely having a plurality of target bandwidth).
Step 310: employed running time-frequency resource when the base station determines that UE carries out transfer of data.
Particularly, the channel condition information that the base station can report according to UE, the service conditions of UE and offered load etc., determine the data transmission scheme (which the transmission point in namely gathering by cooperation transmission is to UE transmission data) at the UE use, and under this data transmission scheme employed running time-frequency resource, also claim PDSCH (Physical Downlink Shared Channel, downlink physical shared channel) resource.
Step 320: instruction content and the indicating mode of running time-frequency resource among corresponding at least one DCI determined based on above-mentioned at least one target bandwidth in the base station.
In the present embodiment, the instruction content of running time-frequency resource and indicating mode in the CoMP that adopts under a certain DCI form transmission (as, bit length) can not have influence on the use of (as, bit length) of other DCI forms; For example, agreement adopts DCI format 2C form to support the CoMP transmission, when adopting DCI format2C form to carry out the running time-frequency resource indication, adopt said method to determine instruction content and the indicating mode of target bandwidth and corresponding running time-frequency resource, its bit length that adopts can not influence the bit length that adopts under the forms such as DCI format 1A, DCI format 1B.Wherein, the bit length of other DCI forms can still be determined by the system bandwidth of UE corresponding with service point.
On the other hand, in the present embodiment, if a target bandwidth has only been selected in the base station, then the base station can directly be determined instruction content and the indicating mode of running time-frequency resource among the corresponding DCI according to this target bandwidth; If base station selected more than one target bandwidth, then the base station can be determined instruction content and the indicating mode of running time-frequency resource among the corresponding DCI respectively according to each target bandwidth, i.e. the corresponding DCI of target bandwidth, at this moment, the base station will send a plurality of DCI to UE.
Wherein, when the instruction content of the running time-frequency resource among the corresponding DCI and indicating mode were determined according to any one target bandwidth in the base station, the base station can be adopted but is not limited to following three kinds of implementations:
First kind of mode is: each RBG of dividing in the system is determined in the base station according to any one target bandwidth, and the bit length that is used for carrying time-frequency resource allocating information among the corresponding DCI, and the RBG that comprises based on the running time-frequency resource of distributing to UE, whether the bit by respective length in this DCI indicates each RBG to allow UE to use to UE respectively.
For example, the base station adopts resource to distribute the distribution condition of type 0 indication running time-frequency resource, and is specific as follows:
The base station is with any one target bandwidth of using in resource distribution and the resource indication
Be divided into N
RBGIndividual RBG, each RBG comprise P Resource Block (resource block, RB),
Wherein,
Expression is not less than the smallest positive integral of x, and the value of P is relevant with the target bandwidth, and is specifically as shown in table 3:
Table 3
N is adopted in the base station in DCI
RBGIndividual bit is indicated each RBG whether to distribute to UE and is used this N
RBGIndividual bit and N
RBGIndividual RBG is one-to-one relationship, and namely the value of each bit represents all whether corresponding RBG distributes to UE, as, " 1 " expression distributes, and " 0 " expression is unallocated.
The second way is: the base station determines that according to any one target bandwidth each RBG and each RBG that divide in the system gather, and the bit length that is used for carrying time-frequency resource allocating information among the corresponding DCI, and the RB of the RBG correspondence that comprises based on the running time-frequency resource of distributing to UE, whether the bit by respective length in this DCI indicates each RBG set to allow UE to use to UE respectively, and whether each RB allows UE to use in the RBG set that allows to use.
For example, the base station adopts resource to distribute the distribution condition of Class1 indication running time-frequency resource, and is specific as follows: the base station is with any one target bandwidth of using in resource distribution and the resource indication
Be divided into N
RBGIndividual RBG, each RBG comprise P RB,
With N
RBGIndividual RBG is divided into P RBG set, and wherein, the value of P is relevant with the target bandwidth, and is specifically as shown in table 3.
Adopt in DCI the base station
Whether individual bit indicates each RBG set to allow UE to use, and adopts
Whether each RB allowed UE to use during the RBG that individual bit indication allows UE to use gathered, this
During individual bit is gathered with the RBG that allows UE to use
Individual RB is one-to-one relationship, and namely the value of each bit represents all whether corresponding RB distributes to UE, as, " 1 " expression distributes, and " 0 " expression is unallocated.
The third mode is: the base station indicates VRB to the mapping relations of PBR in the DCI corresponding with any one target bandwidth, and the bit length of determining to be used among this DCI carrying time-frequency resource allocating information according to this any one target bandwidth, and based on this any one target bandwidth and the position of distributing to the running time-frequency resource of UE, in this DCI, indicate initial resource number and the VRB number of VRB to UE by the bit of respective length.
For example, the base station adopts resource to distribute the distribution condition of type 2 indication running time-frequency resources, and is specific as follows:
The base station indicates VRB to the mapping relations of PRB by 1 bit in DCI, and adopts in DCI
Individual bit indication allows initial resource number and the number of the VRB of UE use, wherein,
Be any one target bandwidth,
If DCI format 1A, DCI format1B or DCI format 1D are used for supporting the CoMP transmission, for DCI format 1A, DCI format1B or DCI format 1D, the base station can be above-mentioned
In the individual bit, allow the initial resource number RB of the VRB of UE use by the RIV indication
StartWith number L
CRBs, wherein, RIV is defined as:
If,
Then
Otherwise,
Wherein, L
CRBs〉=1 and be no more than
If DCI format 1C is used for supporting the CoMP transmission, for DCI format 1C, the base station can be above-mentioned
In the individual bit, allow the initial resource number RB of the VRB of UE use by the RIV indication
StartWith number L
CRBs, wherein, RIV
The corresponding initial resource number of VRB
And the number of the VRB of RIV correspondence
Wherein,
With value relevant with the target bandwidth, specifically as shown in table 4:
Table 4
In the subsequent embodiment, RIV all confirms in the manner described above, will repeat no more.
Step 330: UE is mail to above-mentioned at least one DCI in the base station, makes UE determine the running time-frequency resource that distributes according at least one DCI that receives.
Be specially: one or more DCI that the base station will generate mail to UE, and are corresponding, and UE can determine the running time-frequency resource of distribution according to the one or more DCI that receive, and concrete mode is introduced in follow-up UE effluent journey, does not repeat them here.
Based on above-described embodiment, to consult shown in Figure 4ly, corresponding, in the embodiment of the invention, it is as follows that UE carries out the detailed process that running time-frequency resource confirms according to the base station indication:
Step 400:UE obtains the system bandwidth of at least two transmission points according to the base station notice, and according to the predetermined manner identical with the base station, from the system bandwidth of these at least two transmission points, selects the system bandwidth of at least one transmission point as the target bandwidth.
Particularly, the system bandwidths of at least two transmission points that UE obtains according to the notice of base station can be the system bandwidths of the part or all of transmission point in the cooperation transmission set of UE correspondence; Perhaps, also can be the system bandwidth of the part or all of transmission point in the feedback set of UE correspondence; Wherein, UE can obtain above-mentioned at least two system bandwidths of transmitting point by the high-level signaling of base station transmission or the notice of DCI; Further, if UE fails to receive above-mentioned at least two system bandwidths of transmitting point of base station notice, system normally moves for assurance, UE can be directly be defined as the target bandwidth with the system bandwidth of the service point of this UE correspondence, and determines the distribution condition of running time-frequency resource in follow-up flow process based on this target bandwidth.
On the other hand, in the present embodiment, after UE receives the system bandwidth of at least two transmission points notifying the base station smoothly, will be according to the predetermined manner identical with the base station, from the system bandwidth that at least two transmission that obtain are put, select the system bandwidth of at least one transmission point as the target bandwidth, be specially: the system bandwidth of the transmission point that UE can selective system bandwidth maximum is as the target bandwidth, the system bandwidth of transmission point that can selective system bandwidth minimum is defined as the target bandwidth, can select the system bandwidth of service point to be defined as the target bandwidth, and, can also select the system bandwidth of all transmission point all as target bandwidth (namely having a plurality of target bandwidth).
In the present embodiment, the instruction content of running time-frequency resource and indicating mode in the CoMP that adopts under a certain DCI form transmission (as, bit length) can not have influence on the use of (as, bit length) of other DCI forms; For example, agreement adopts DCI form at 2C form to support the CoMP transmission, when adopting DCI format2C form to carry out the running time-frequency resource indication, adopt said method to determine instruction content and the indicating mode of target bandwidth and corresponding running time-frequency resource, its bit length that adopts can not influence the bit length that adopts under the forms such as DCI format 1A, DCI format 1B.Wherein, the bit length of other DCI forms can still be determined by the system bandwidth of UE corresponding with service point.
Step 410:UE receive that the base station sends in order to carry out at least one DCI of running time-frequency resource indication.
Step 420:UE determines the running time-frequency resource of base station assigns based at least one target bandwidth according at least one DCI that receives.
Be specially: corresponding if UE has only selected a target bandwidth, UE will receive the DCI that the base station sends, and then UE will directly determine the running time-frequency resource of base station assigns based on this target bandwidth according to the DCI that receives; And if UE has selected a plurality of target bandwidth, accordingly, UE also will receive a plurality of DCI that the base station sends, then UE will be based on each target bandwidth, determine the running time-frequency resource of base station assigns respectively according to corresponding DCI, and will determine that the result merges, like this because, the time-frequency resource allocating situation of a plurality of DCI indications that UE receives may be inequality, but be the available running time-frequency resource that base station assigns is given UE, therefore, UE can merge it (namely asking union), thereby obtains an available running time-frequency resource set.
Wherein, corresponding with step 320, UE is based on any one target bandwidth, when determining the running time-frequency resource of base station assigns according to corresponding DCI, can adopt but is not limited to following three kinds of implementations:
First kind of mode is: UE determines each RBG of dividing in the system according to any one target bandwidth, and the bit length that is used for carrying time-frequency resource allocating information among the corresponding DCI, and determine respectively by the bit of respective length whether each RBG allows to use.
For example: UE distributes type 0 to determine the distribution condition of running time-frequency resource according to resource, and is specific as follows:
UE is with any one target bandwidth
Be divided into N
RBGIndividual RBG, each RBG comprise P RB,
Wherein,
Expression is not less than the smallest positive integral of x, and the value of P is relevant with the target bandwidth, and is specifically as shown in table 3.
UE passes through N in the corresponding DCI that receives
RBGIndividual bit determines whether each RBG can use this N
RBGIndividual bit and N
RBGIndividual RBG is one-to-one relationship, and namely the value of each bit represents all whether corresponding RBG distributes to UE, as, " 1 " expression distributes, and " 0 " expression is unallocated.On the other hand, N
RBGIndividual bit reading the position and can indicate UE by the base station in DCI perhaps, by base station and UE agreement, perhaps, carried out according to the agreement regulation, do not repeat them here.
The second way is: UE determines that according to any one target bandwidth each RBG and each RBG that divide in the system gather, and the bit length that is used for carrying time-frequency resource allocating information among the corresponding DCI, and the bit by respective length determines respectively whether each RBG set allows to use, and whether each RB allows to use in the RGB set that allows to use.
For example, UE distributes Class1 to determine the distribution condition of running time-frequency resource according to resource, and is specific as follows:
UE is with any one target bandwidth
Be divided into N
RBGIndividual RBG, each RBG comprise P RB,
With N
RBGIndividual RBG is divided into P RBG set, and wherein, the value of P is relevant with the target bandwidth, and is specifically as shown in table 3.
UE passes through in corresponding DCI
Individual bit determines whether each RBG set allows to use, and passes through
Whether each RB allows to use in the RBG set that individual bit is determined to allow to use, this
During individual bit is gathered with the RBG that allows UE to use
Individual RB is one-to-one relationship, and namely the value of each bit represents all whether corresponding RB distributes to UE, as, " 1 " expression distributes, and " 0 " expression is unallocated.On the other hand,
Individual bit and
Individual bit reading the position and can indicate UE by the base station in DCI perhaps, by base station and UE agreement, perhaps, carried out according to the agreement regulation, do not repeat them here.
The third mode is: UE determines that according to the DCI of any one the target bandwidth correspondence that receives VRB is to the mapping relations of PBR, and determine to be used among the DCI bit length of carrying time-frequency resource allocating information according to corresponding any one target bandwidth, and determine initial resource number and the VRB number of VRB by the bit of respective length.
For example, UE distributes type 2 to determine the distribution condition of running time-frequency resource according to resource, and is specific as follows:
UE determines VRB to the mapping relations of PRB according to the indication information of 1 bit that DCI carries, and passes through in DCI
Individual bit is determined initial resource number and the number of the VRB that permission is used, wherein,
Be any one target bandwidth,
If DCI format 1A, DCI format1B, DCI format 1C or DCI format 1D are used for supporting the CoMP transmission, for DCI format 1A, DCI format1B, DCI format 1D or DCI format1C, UE all can be by above-mentioned
The RIV that individual bit carries determines the initial resource number RB of the VRB that permission UE uses
StartWith number L
CRBs, wherein, the definition of RIV is identical with base station side, does not repeat them here.
In sum, in the embodiment of the invention, the base station is to the system bandwidth of at least two transmission points of UE notice, therefrom select the system bandwidth of at least one transmission point as the target bandwidth according to predetermined manner again, and be that UE distributes running time-frequency resource according to this at least one target bandwidth, and at least one downlink signaling, carry out running time-frequency resource based on this at least one target bandwidth and indicate, UE is then according to the notice of base station, transmit the system bandwidth of putting from least two of obtaining according to identical predetermined manner, select the system bandwidth of at least one transmission point as the target bandwidth, and resolve based at least one downlink signaling that at least one the target bandwidth butt joint that obtains is received, thereby determine the running time-frequency resource that base station side is distributed.Like this, just in the CoMP transmission, under the situation that the system bandwidth of each transmission point may have nothing in common with each other in the cooperation set, realized the unified indication of running time-frequency resource, thereby guarantee that UE can carry out active data based on the running time-frequency resource that obtains and receive, system handles flow process under the perfect CoMP transmission has improved systematic function.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (28)
1. the indicating means of a running time-frequency resource is characterized in that, comprising:
Network side is notified the system bandwidths of at least two transmission points to terminal, and according to predetermined manner, from the system bandwidth of described at least two transmission points, selects at least one system bandwidth of transmitting point as the target bandwidth;
Employed running time-frequency resource when network side determines that terminal carried out transfer of data;
Network side is determined instruction content and the indicating mode of running time-frequency resource in corresponding at least one downlink signaling based on described at least one target bandwidth;
Network side mails to terminal with described at least one downlink signaling, makes terminal determine the running time-frequency resource that distributes according to described at least one downlink signaling.
2. the method for claim 1 is characterized in that, network side comprises to the system bandwidth of two transmission points of terminal notice at least:
Network side is with the system bandwidth notice terminal of the part or all of transmission point in the cooperation transmission set of terminal correspondence; Perhaps, notify terminal with the system bandwidth of the part or all of transmission point in the feedback set of terminal correspondence.
3. method as claimed in claim 2 is characterized in that, network side adopts high-level signaling or Downlink Control Information DCI at least two system bandwidths of transmitting point of terminal notice.
4. method as claimed in claim 3, it is characterized in that, network side adopts high-level signaling or DCI after the system bandwidth of at least two transmission points of terminal notice, if fail to determine whether terminal receives the system bandwidth of described at least two transmission point, and then the system bandwidth with the service point in the cooperation transmission set of described terminal correspondence is defined as the target bandwidth.
5. the method for claim 1 is characterized in that, network side from the system bandwidth of described at least two transmission point, selects the system bandwidth of at least one transmission point as the target bandwidth according to predetermined manner, comprising:
Network side is with in described at least two transmission point, and the system bandwidth of the transmission point of system bandwidth maximum is defined as the target bandwidth;
Perhaps,
Network side is with in described at least two transmission point, and the system bandwidth of the transmission point of system bandwidth minimum is defined as the target bandwidth;
Perhaps,
Network side is with in described at least two transmission point, and the system bandwidth of service point is defined as the target bandwidth;
Perhaps,
Network side is with in described at least two transmission point, and the system bandwidth of all transmission points all is defined as the target bandwidth.
6. as each described method of claim 1-5, it is characterized in that network side is determined instruction content and the indicating mode of running time-frequency resource in corresponding at least one downlink signaling based on described at least one target bandwidth, comprising:
If the number of target bandwidth is 1, then network side is directly determined instruction content and the indicating mode of running time-frequency resource in the corresponding downlink signaling based on described target bandwidth;
If the number of target bandwidth is greater than 1, then network side is determined instruction content and the indicating mode of running time-frequency resource in the corresponding downlink signaling respectively based on each target bandwidth.
7. method as claimed in claim 6 is characterized in that, network side is based on any one target bandwidth, when determining the instruction content of running time-frequency resource in the corresponding downlink signaling and indicating mode, comprising:
Network side is determined each Resource Block group RBG of dividing in the system according to described any one target bandwidth, and the bit length that is used for carrying time-frequency resource allocating information in the corresponding downlink signaling, and the RBG that comprises based on the running time-frequency resource of distributing to terminal, whether the bit by respective length in described downlink signaling indicates each RBG to allow terminal to use to terminal respectively;
Perhaps
Network side determines that according to described any one target bandwidth each RBG and each RBG that divide in the system gather, and the bit length that is used for carrying time-frequency resource allocating information in the corresponding downlink signaling, and the Resource Block RB of the RBG correspondence that comprises based on the running time-frequency resource of distributing to terminal, whether the bit by respective length in described downlink signaling indicates each RBG set to allow terminal to use to terminal respectively, and whether each RB allows terminal to use in the RBG set that allows to use;
Perhaps
Network side indicates virtual resource blocks VRB to the mapping relations of Physical Resource Block PBR in described downlink signaling, and the bit length of determining to be used in the described downlink signaling carrying time-frequency resource allocating information according to described any one target bandwidth, and based on described any one target bandwidth and the position of distributing to the running time-frequency resource of terminal, in described downlink signaling, indicate initial resource number and the VRB number of VRB to terminal by the bit of respective length.
8. the confirmation method of a running time-frequency resource is characterized in that, comprising:
Terminal obtains the system bandwidth of at least two transmission points according to the network side notice, and according to the predetermined manner identical with network side, from the system bandwidth of described at least two transmission point, selects the system bandwidth of at least one transmission point as the target bandwidth;
Terminal receive that network side sends in order to carry out at least one downlink signaling of running time-frequency resource indication;
Terminal is determined the running time-frequency resource that network side distributes based at least one target bandwidth according to described at least one downlink signaling.
9. method as claimed in claim 8 is characterized in that, terminal obtains at least two system bandwidths of transmitting point according to the network side notice, comprising:
Terminal is according to the system bandwidth of the part or all of transmission point in the cooperation transmission set of this terminal of network side notice acquisition correspondence; Perhaps, obtain the system bandwidth of the part or all of transmission point in the feedback set of this terminal correspondence.
10. method as claimed in claim 9 is characterized in that, terminal obtains described at least two system bandwidths of transmitting point according to the high-level signaling of network side transmission or the notice of DCI.
11. method as claimed in claim 10 is characterized in that, if terminal fails to receive high-level signaling or the DCI that network side sends, then the system bandwidth with the service point in the cooperation transmission set of this terminal correspondence is defined as the target bandwidth.
12. method as claimed in claim 8 is characterized in that, terminal from the system bandwidth of described at least two transmission point, selects the system bandwidth of at least one transmission point as the target bandwidth according to the predetermined manner identical with network side, comprising:
Terminal is with in described at least two transmission point, and the system bandwidth of the transmission point of system bandwidth maximum is defined as the target bandwidth;
Perhaps,
Terminal is with in described at least two transmission point, and the system bandwidth of the transmission point of system bandwidth minimum is defined as the target bandwidth;
Perhaps,
Terminal is with in described at least two transmission point, and the system bandwidth of service point is defined as the target bandwidth;
Perhaps,
Terminal is with in described at least two transmission point, and the system bandwidth of all transmission points all is defined as the target bandwidth.
13., it is characterized in that terminal is determined the running time-frequency resource that network side distributes based at least one target bandwidth according to described at least one downlink signaling, comprising as each described method of claim 8-12:
If the number of target bandwidth is 1, and the number of the downlink signaling that receives is 1, and then terminal is directly determined the running time-frequency resource that network side distributes based on described target bandwidth according to described downlink signaling;
If the number of target bandwidth is greater than 1, and the number of the downlink signaling that receives is greater than 1, and then terminal is determined the running time-frequency resource that network side distributes according to corresponding downlink signaling respectively, and will be determined that the result merges based on each target bandwidth.
14. method as claimed in claim 13 is characterized in that, terminal is determined the running time-frequency resource that network side distributes based on any one target bandwidth according to corresponding downlink signaling, comprising:
Terminal is determined each Resource Block group RBG of dividing in the system according to any one target bandwidth, and the bit length that is used for carrying time-frequency resource allocating information in the corresponding downlink signaling, and determine respectively by the bit of respective length whether each RBG allows to use;
Perhaps,
Terminal determines that according to any one target bandwidth each RBG and each RBG that divide in the system gather, and the bit length that is used for carrying time-frequency resource allocating information in the corresponding downlink signaling, and the bit by respective length determines respectively whether each RBG set allows to use, and whether each RB allows to use in the RBG set that allows to use;
Perhaps,
Terminal determines that according to described downlink signaling VRB is to the mapping relations of PBR, and determine in the downlink signaling to be used for the bit length of carrying time-frequency resource allocating information according to described any one target bandwidth, and determine initial resource number and the VRB number of VRB by the bit of respective length.
15. the indicating device of a running time-frequency resource is characterized in that, comprising:
First processing unit is used for to the system bandwidth of two transmission points of terminal notice at least, and according to predetermined manner, from the system bandwidth of described at least two transmission point, selects the system bandwidth of at least one transmission point as the target bandwidth;
Second processing unit, employed running time-frequency resource when be used for determining that terminal carried out transfer of data;
The 3rd processing unit is used for based on described at least one target bandwidth, determines instruction content and the indicating mode of running time-frequency resource in corresponding at least one downlink signaling;
Communication unit is used for described at least one downlink signaling is mail to terminal, makes terminal determine the running time-frequency resource that distributes according to described at least one downlink signaling.
16. device as claimed in claim 15 is characterized in that, described first processing unit comprises to the system bandwidth of two transmission points of terminal notice at least:
Described first processing unit is by the system bandwidth notice terminal of described communication unit with the part or all of transmission point in the cooperation transmission set of terminal correspondence; Perhaps, notify terminal with the system bandwidth of the part or all of transmission point in the feedback set of terminal correspondence.
17. device as claimed in claim 16 is characterized in that, described first processing unit adopts high-level signaling or Downlink Control Information DCI at least two system bandwidths of transmitting point of terminal notice by described communication unit.
18. device as claimed in claim 17, it is characterized in that, described first processing unit adopts high-level signaling or DCI after the system bandwidth of at least two transmission points of terminal notice by described communication unit, if fail to determine whether terminal receives the system bandwidth of described at least two transmission point, and then the system bandwidth with the service point in the cooperation transmission set of described terminal correspondence is defined as the target bandwidth.
19. device as claimed in claim 15 is characterized in that, described first processing unit from the system bandwidth of described at least two transmission point, selects the system bandwidth of at least one transmission point as the target bandwidth according to predetermined manner, comprising:
Described first processing unit is with in described at least two transmission points, and the system bandwidth of the transmission point of system bandwidth maximum is defined as the target bandwidth;
Perhaps,
Described first processing unit is with in described at least two transmission points, and the system bandwidth of the transmission point of system bandwidth minimum is defined as the target bandwidth;
Perhaps,
Described first processing unit is with in described at least two transmission points, and the system bandwidth of service point is defined as the target bandwidth;
Perhaps,
Described first processing unit is with in described at least two transmission points, and the system bandwidth of all transmission points all is defined as the target bandwidth.
20., it is characterized in that described the 3rd processing unit is determined instruction content and the indicating mode of running time-frequency resource in corresponding at least one downlink signaling based on described at least one target bandwidth, comprising as each described device of claim 15-19:
If the number of target bandwidth is 1, then described the 3rd processing unit is directly determined instruction content and the indicating mode of running time-frequency resource in the corresponding downlink signaling based on described target bandwidth;
If the number of target bandwidth is greater than 1, then described the 3rd processing unit is determined instruction content and the indicating mode of running time-frequency resource in the corresponding downlink signaling respectively based on each target bandwidth.
21. device as claimed in claim 20 is characterized in that, described the 3rd processing unit is based on any one target bandwidth, when determining the instruction content of running time-frequency resource in the corresponding downlink signaling and indicating mode, comprising:
Described the 3rd processing unit is determined each Resource Block group RBG of dividing in the system according to described any one target bandwidth, and the bit length that is used for carrying time-frequency resource allocating information in the corresponding downlink signaling, and the RBG that comprises based on the running time-frequency resource of distributing to terminal, whether the bit by respective length in described downlink signaling indicates each RBG to allow terminal to use to terminal respectively;
Perhaps
Described the 3rd processing unit determines that according to described any one target bandwidth each RBG and each RBG that divide in the system gather, and the bit length that is used for carrying time-frequency resource allocating information in the corresponding downlink signaling, and the Resource Block RB of the RBG correspondence that comprises based on the running time-frequency resource of distributing to terminal, whether the bit by respective length in described downlink signaling indicates each RBG set to allow terminal to use to terminal respectively, and whether each RB allows terminal to use in the RBG set that allows to use;
Perhaps
Described the 3rd processing unit indicates virtual resource blocks VRB to the mapping relations of Physical Resource Block PBR in described downlink signaling, and the bit length of determining to be used in the described downlink signaling carrying time-frequency resource allocating information according to described any one target bandwidth, and based on described any one target bandwidth and the position of distributing to the running time-frequency resource of terminal, in described downlink signaling, indicate initial resource number and the VRB number of VRB to terminal by the bit of respective length.
22. the affirmation device of a running time-frequency resource is characterized in that, comprising:
First control unit, be used for obtaining according to the network side notice system bandwidth of at least two transmission points, and according to the predetermined manner identical with network side, from the system bandwidth of described at least two transmission point, select the system bandwidth of at least one transmission point as the target bandwidth;
Communication unit, be used for to receive that network side sends in order to carry out at least one downlink signaling of running time-frequency resource indication;
Second control unit is used for based at least one target bandwidth, determines the running time-frequency resource that network side distributes according to described at least one downlink signaling.
23. device as claimed in claim 22 is characterized in that, described first control unit obtains at least two system bandwidths of transmitting point according to the network side notice, comprising:
Described first control unit obtains the system bandwidth of the part or all of transmission point in the corresponding cooperation transmission set of this device according to the network side notice; Perhaps, obtain the system bandwidth of the part or all of transmission point in the corresponding feedback set of this device.
24. device as claimed in claim 23 is characterized in that, described first control unit obtains described at least two system bandwidths of transmitting point according to the high-level signaling of network side transmission or the notice of DCI.
25. device as claimed in claim 24, it is characterized in that, if described first control unit fails to receive high-level signaling or the DCI that network side sends, the system bandwidth of the service point in the cooperation transmission set that then described first control unit is corresponding with this device is defined as the target bandwidth.
26. device as claimed in claim 22, it is characterized in that described first control unit is according to the predetermined manner identical with network side, from the system bandwidth of described at least two transmission point, select the system bandwidth of at least one transmission point as the target bandwidth, comprising:
Described first control unit is with in described at least two transmission points, and the system bandwidth of the transmission point of system bandwidth maximum is defined as the target bandwidth;
Perhaps,
Described first control unit is with in described at least two transmission points, and the system bandwidth of the transmission point of system bandwidth minimum is defined as the target bandwidth;
Perhaps,
Described first control unit is with in described at least two transmission points, and the system bandwidth of service point is defined as the target bandwidth;
Perhaps,
Described first control unit is with in described at least two transmission points, and the system bandwidth of all transmission points all is defined as the target bandwidth.
27., it is characterized in that described the 3rd control unit is determined the running time-frequency resource that network side distributes based at least one target bandwidth according to described at least one downlink signaling, comprising as each described device of claim 22-26:
If the number of target bandwidth is 1, and the number of the downlink signaling that receives is 1, and then described the 3rd control unit is directly determined the running time-frequency resource that network side distributes based on described target bandwidth according to described downlink signaling;
If the number of target bandwidth is greater than 1, and the number of the downlink signaling that receives is greater than 1, and then described the 3rd control unit is determined the running time-frequency resource that network side distributes according to corresponding downlink signaling respectively, and will be determined that the result merges based on each target bandwidth.
28. device as claimed in claim 27 is characterized in that, described the 3rd control unit is determined the running time-frequency resource that network side distributes based on any one target bandwidth according to corresponding downlink signaling, comprising:
Described the 3rd control unit is determined each Resource Block group RBG of dividing in the system according to any one target bandwidth, and the bit length that is used for carrying time-frequency resource allocating information in the corresponding downlink signaling, and determine respectively by the bit of respective length whether each RBG allows to use;
Perhaps,
Described the 3rd control unit determines that according to any one target bandwidth each RBG and each RBG that divide in the system gather, and the bit length that is used for carrying time-frequency resource allocating information in the corresponding downlink signaling, and determine by the bit of respective length whether each RBG set allows to use, and whether each RB allows to use in the RBG set that allows to use;
Perhaps,
Described the 3rd control unit determines that according to described downlink signaling VRB is to the mapping relations of PBR, and determine in the downlink signaling to be used for the bit length of carrying time-frequency resource allocating information according to described any one target bandwidth, and determine initial resource number and the VRB number of VRB by the bit of respective length.
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