Background technology
For LTE-A(Long Term Evolution Advanced, long-term evolution upgrading) multicarrier system, for supporting than LTE(Long Term Evolution, Long Term Evolution) the wideer system bandwidth of system, such as 100MHz, a kind of may be the frequency spectrum that directly distributes the 100M bandwidth, single-frequency spectral system schematic as shown in Figure 1; Another kind may be to adopt CA(Carrier Aggregation, carrier aggregation) technology, some spectrum aggregatings of existing system will be distributed to, constitute big bandwidth and supply with the long-term evolution multi-carrier system use, the up-downgoing carrier wave can asymmetricly dispose in the system at this moment, be that the user may take N1 〉=1 carrier wave and carries out downlink transfer, N2 〉=1 carrier wave carries out uplink, spectrum aggregating system schematic as shown in Figure 2.
The LTE-A system determines to support 5 carrier waves to carry out polymerization at most at present, the UE(User Equipment of LTE-A, subscriber equipment) need be at the ACK(Acknowledgment of a plurality of descending carriers of same sub-frame of uplink internal feedback and descending sub frame, positive acknowledgement)/and NACK(Negative Acknowledgment, Negative Acknowledgement) feedback information.
It is as shown in table 1 that corresponding same sub-frame of uplink carries out the descending sub frame of ACK/NACK feedback on each descending carrier, M carries out the descending sub frame number of ACK/NACK feedback for a corresponding sub-frame of uplink on each descending carrier, M is to different sub-frame of uplink and different TDD(Time Division Duplexing, time division duplex) uplink-downlink configuration value difference, the descending sub frame that is each the sub-frame of uplink correspondence shown in the table 1 is gathered
In the descending sub frame sum.Especially, for uplink-downlink configuration 0 and 5 at conventional CP(Cyclic Prefix, Cyclic Prefix) under, and the special descending sub frame of uplink-downlink configuration 0 and 4 under expansion CP, can not count, promptly M can not comprise this subframe, and UE is not to this subframe feeding back ACK/NACK.
Table 1 Downlink association set index
:
For TDD
The LTE-A system supports ACK/NACK at PUSCH(Physical Uplink Shared Channel, Physical Uplink Shared Channel) goes up transmission, for there not being corresponding PDCCH(Physical Downlink Control Channel, Physical Downlink Control Channel) SPS(Semi-persistent Scheduling, semi-continuous scheduling) PUSCH, because PUSCH does not have corresponding UL grant(uplink scheduling permission), therefore UE can't be according to the UL DAI(Downlink Assignment Index among the UL grant, descending allocation index) (comprise
Or
) determine the ACK/NACK feedback information of each descending carrier.At this situation, regulation UE transmits ACK/NACK in the following manner in the existing standard on PUSCH:
(1) if UE receives at least one PDSCH(Physical Downlink Shared Channel in the current sub-frame of uplink of correspondence carries out the descending sub frame of a plurality of descending carriers of ACK/NACK feedback, Physical Downlink Shared Channel) or the PDCCH that discharges of indicating downlink SPS resource, then UE determines that according to following mode PUSCH goes up the ACK/NACK feedback information of transmission:
A, be configured to adopt PUCCH (Physical Uplink Control Channel as ACK/NACK, Physical Uplink Control Channel) format(form) 3 o'clock, UE to the single codeword transmission mode or each descending carrier that carries out many codeword transmission pattern that the space merges produce M bit ACK/NACK feedback information; Descending sub frame on the descending carrier that does not receive the PDCCH that PDSCH or indicating downlink SPS resource discharge is produced 1 bit NACK as feedback information; To many codeword transmission pattern and do not carry out each descending carrier that the space merges and produce 2M bit ACK/NACK feedback information; Descending sub frame on the descending carrier that does not receive the PDCCH that PDSCH or indicating downlink SPS resource discharge is produced 2 bit NACK as feedback information, the ACK/NACK feedback information of each descending carrier cascaded up on PUSCH, transmit, wherein N is the descending carrier number of UE configuration/polymerization, and M is the corresponding descending sub frame number that carries out the ACK/NACK feedback at a sub-frame of uplink on each up-link carrier.
B, when ACK/NACK 2 descending carriers that have been configured to adopt PUCCH format 1b with channel selection and polymerization, UE transmission 4 bit informations at most on PUSCH:
When M=1, UE does not carry out the space merging to the ACK/NACK feedback information of many code words, the PDCCH of each code word on each descending carrier or the release of indicating downlink SPS resource is produced the ACK/NACK feedback information of 1 bit; The PDCCH that each code word on the descending carrier that does not receive the PDCCH that PDSCH or indicating downlink SPS resource discharge or indicating downlink SPS resource are discharged produces NACK as feedback information, the ACK/NACK feedback information of each descending carrier is cascaded up transmit on PUSCH;
When M=2, UE carries out the space merging to the ACK/NACK feedback information of many code words, each subframe on each descending carrier is produced the ACK/NACK feedback information of 1 bit; Descending sub frame on the descending carrier that does not receive the PDCCH that PDSCH or indicating downlink SPS resource discharge is produced NACK as feedback information, the ACK/NACK feedback information of each descending carrier is cascaded up on PUSCH, transmit;
When M=3 or 4, UE carries out the space merging to the ACK/NACK feedback information of many code words, corresponding 2 bit informations of each descending carrier represent that first descending sub frame begins continuous ACK number on the descending carrier, wherein 4 ACK can with a feedback states of 1 ACK or shared 2 bit informations of other ACK numbers, 2 bit informations of each descending carrier correspondence are cascaded up on PUSCH, transmit;
(2) if UE does not receive the PDCCH that PDSCH or indicating downlink SPS resource discharge in the current sub-frame of uplink of correspondence carries out all descending sub frames of a plurality of descending carriers of ACK/NACK feedback, UE transferring ACK/NACK feedback information not on PUSCH then.
Consider ACK/NACK on PUSCH by mapping that upstream data is punched, frequency domain is placed from the low frequency to the high frequency after the four row symbols elder generation time domain of pilot tone both sides, ascending control information as shown in Figure 3 is at PUSCH ascending physical signal resource mapping schematic diagram, and there are the following problems for the mode of UE above-mentioned transmission ACK/NACK on PUSCH:
If transmit at the PDCCH that the current sub-frame of uplink of correspondence carries out existing PDSCH scheduled transmission or indicating downlink SPS resource to discharge in the descending sub frame of ACK/NACK feedback the base station, consider that may there be the situation of the PDCCH that loses PDSCH or the release of indicating downlink SPS resource in UE, base station and UE may be inconsistent to the understanding of whether having transmitted ACK/NACK on the PUSCH.Therefore, the base station need be carried out the DTX(Discontinuous Transmission of ACK/NACK feedback information, discontinuous transmission to SPS PUSCH) detect, whether transmitted the ACK/NACK feedback information to judge UE.
But there is certain error probability in the DTX of ACK/NACK feedback information; If this has sent ACK/NACK UE on PUSCH, but when the DTX testing result that ACK/NACK is gone up to PUSCH in the base station is DTX, the base station thinks that UE does not send ACK/NACK on PUSCH, then the ACK/NACK information of UE feedback has been lost in the base station, to cause descending redundant retransmission, and ACK/NACK information decoded as upstream data, thereby influence the correct reception of upstream data; If this does not send ACK/NACK UE on PUSCH, but when the DTX testing result that ACK/NACK is gone up to PUSCH in the base station is non-DTX, the base station thinks that UE has sent ACK/NACK on PUSCH, then decode upstream data in the base station as ACK/NACK information, obtained wrong ACK/NACK feedback information, to cause descending redundant retransmission or erroneous transmissions, also influence the correct reception of upstream data simultaneously.
In addition, the resource transmitted on PUSCH of ACK/NACK is the resource offset parameter according to different ACK/NACK feedback bits length and the pre-configured relative upstream data of ACK/NACK
Determine.Resource offset is the shared RE(Resource Element of ACK/NACK feedback information, Resource Unit) adjustment amount of the number RE number shared with respect to the upstream data on the PUSCH is to guarantee the transmission reliability of the ACK/NACK under the different upstream data MCS grades.
Because ACK/NACK is different with many code words (2 code words) last transmission means of PUSCH in single codeword, when many codeword transmission of PUSCH, ACK/NACK is mapped in every layer and repeats transmission, ACK/NACK is different with transmission performance on many codeword transmission PUSCH in single codeword transmission, for fear of the wasting of resources, the PUSCH of single codeword and many codeword transmission is defined calculating respectively
,
For high-level signaling pre-configured, promptly based on PUSCH transfer bandwidth in a period of time and MCS(modulation and coding style, modulation coding mode) the isoparametric variation demand of grade and setting.
For SPS PUSCH, the transmission bandwidth of PUSCH and MCS grade be at a period of time internal fixation, therefore, determines based on the PUSCH transfer bandwidth of dynamic change and MCS grade
No longer be applicable to the ACK/NACK transmission on the SPS PUSCH.
In addition, for TDD system uplink-downlink configuration 0 or FDD system, owing to do not have 2 bit UL DAI among the UL grant, so there are the problems referred to above in ACK/NACK when transmitting too on PUSCH.
In realizing process of the present invention, the inventor finds to exist at least in the prior art following problem:
In LTE-A CA system, for the SPS PUSCH that does not have corresponding PDCCH, or the PUSCH under the TDD uplink-downlink configuration 0, or the PUSCH in the FDD system, if UE does not all receive the PDCCH that PDSCH or indicating downlink SPS resource discharge in the current sub-frame of uplink of correspondence carries out all descending sub frames of ACK/NACK feedback, UE transferring ACK/NACK feedback information not on PUSCH then.When the UE downlink data is lost, will cause base station and UE to whether understanding differently of transferring ACK/NACK causes on the PUSCH, thereby influence the detection performance of ACK/NACK and upstream data.
Embodiment
In LTE-A CA system, UE can't be according to the UL DAI among the UL grant
Or
Determine the ACK/NACK feedback information of each descending carrier, if UE does not receive the PDCCH that PDSCH or indicating downlink SPS resource discharge in the current sub-frame of uplink of correspondence carries out all descending sub frames of ACK/NACK feedback, UE transferring ACK/NACK feedback information not on PUSCH then; ACK/NACK DTX detection is carried out to need SPS PUSCH in the base station, whether has transmitted the ACK/NACK feedback information to judge UE.Make mistakes if the ACK/NACK DTX of base station detects, then can influence the demodulation performance of base station upstream data and ACK/NACK feedback information.
At the problems referred to above, the embodiment of the invention has proposed the transmission method of a kind of ACK/NACK feedback information at PUSCH, to avoid base station and UE to whether understanding differently of transferring ACK/NACK causes on the PUSCH, and then avoid the base station that the DTX that PUSCH goes up the ACK/NACK feedback information is detected, improve the transmission reliability of upstream data and ACK/NACK feedback information.
Below in conjunction with accompanying drawing the embodiment of the invention is described in detail.
Embodiment one
The embodiment of the invention provides the transmission method of a kind of ACK/NACK, and as shown in Figure 4, this method may further comprise the steps:
Step 401, UE determines the ACK/NACK feedback information that transmits on PUSCH.
In the embodiment of the invention, in the LTE-A system, when the ACK/NACK feedback information when PUSCH transmits, if the PUSCH that is used for transmitting uplink control information that UE determines is the PUSCH that does not have corresponding PDCCH, or be the PUSCH under the uplink-downlink configuration 0 in the TDD system, or when being PUSCH in the FDD system, no matter whether UE receives the PDCCH that PDSCH or indicating downlink SPS resource discharge in the needs of current sub-frame of uplink correspondence carry out the descending sub frame of ACK/NACK feedback, UE is all transmission ACK/NACK feedback information on the PUSCH (if promptly UE does not receive the PDCCH of PDSCH or the release of indicating downlink SPS resource in the sub-frame of uplink that correspondence sends PUSCH carries out the descending sub frame of ACK/NACK feedback, UE also need transmit the ACK/NACK feedback information on PUSCH).
Particularly, promptly for there not being UL DAI(to include but not limited to
Or
) PUSCH of information, no matter whether UE receives the PDCCH that PDSCH or indicating downlink SPS resource discharge in the needs of current sub-frame of uplink correspondence carry out all descending sub frames of all descending carriers of ACK/NACK feedback, and UE is transmission ACK/NACK feedback information on these PUSCH all.
In the embodiment of the invention, UE determines that the mode of the ACK/NACK feedback information that transmits comprises on PUSCH:
Mode one: UE counts the descending sub frame that corresponding current sub-frame of uplink on N and each descending carrier carries out the ACK/NACK feedback according to the descending carrier of self configuration and counts M, determines ACK/NACK number of bits of feedback and feedback information sequence that UE need transmit on PUSCH.
(1) at each descending carrier, when this descending carrier was single codeword transmission mode or many codeword transmission pattern and the merging of employing space, UE need produce the ACK/NACK feedback information of M bit to this descending carrier; When this descending carrier is many codeword transmission pattern and when not adopting the space to merge, UE need produce the ACK/NACK feedback information of 2M bit to this descending carrier.Wherein M is the descending sub frame number that corresponding current sub-frame of uplink carries out the ACK/NACK feedback.
(2) UE produces NACK as the ACK/NACK feedback information to the descending sub frame of the PDCCH that do not receive PDSCH or indicating downlink SPS resource and discharge; Wherein, at each descending carrier, when this descending carrier was single codeword transmission mode or many codeword transmission pattern and the merging of employing space, UE produced 1 bit NACK to descending sub frame; When this descending carrier is many codeword transmission pattern and when not adopting the space to merge, UE produces 2 bit NACK to descending sub frame.
At above-mentioned two kinds of situations, when UE transmitted the ACK/NACK feedback information on PUSCH, this UE transmitted on PUSCH with the ACK/NACK feedback information cascade of each descending carrier correspondence together.
Mode two: UE merges mode according to the PUCCH transformat and/or the ACK/NACK of the transferring ACK/NACK feedback information of current configuration or use, determines ACK/NACK number of bits of feedback and the feedback information sequence transmitted on PUSCH; Be that UE merges the different of mode according to the PUCCH transformat with ACK/NACK, adopt distinct methods to determine that PUSCH goes up the ACK/NACK feedback information bits number and the feedback information sequence of transmission.
(1) current configuration of UE or the PUCCH transformat that uses are that UE adopts PUCCH format 3 forms transferring ACK/NACK feedback information on PUCCH as PUCCH format 3() time, UE determines that the mode of the ACK/NACK feedback information that transmits comprises on PUSCH:
At each descending carrier, when this descending carrier was single codeword transmission mode or many codeword transmission pattern and the merging of employing space, UE need produce the ACK/NACK feedback information of M bit to this descending carrier; When this descending carrier is many codeword transmission pattern and when not adopting the space to merge, UE need produce the ACK/NACK feedback information of 2M bit to this descending carrier.Wherein M is the descending sub frame number that corresponding current sub-frame of uplink carries out the ACK/NACK feedback.
UE produces NACK as the ACK/NACK feedback information to the descending sub frame of the PDCCH that do not receive PDSCH or indicating downlink SPS resource and discharge; Wherein, at each descending carrier, when this descending carrier was single codeword transmission mode or many codeword transmission pattern and the merging of employing space, UE produced 1 bit NACK to descending sub frame; When this descending carrier is many codeword transmission pattern and when not adopting the space to merge, UE produces 2 bit NACK to descending sub frame.
When UE transmitted the ACK/NACK feedback information on PUSCH, this UE transmitted on PUSCH with the ACK/NACK feedback information cascade of each descending carrier correspondence together.
(2) current configuration of UE or the PUCCH transformat that uses are that UE adopts PUCCH format 1b with channel selection form transferring ACK/NACK feedback information on PUCCH as PUCCH format 1b with channel selection() time, UE determines that the mode of the ACK/NACK feedback information that transmits comprises on PUSCH:
When M=1, UE does not carry out the space merging to the ACK/NACK feedback information of many code words; The PDCCH that each code word on each descending carrier or indicating downlink SPS resource are discharged produces the ACK/NACK feedback information of 1 bit, when promptly each descending carrier being produced this descending carrier of M(and is the single codeword transmission) or this descending carrier of 2M(when being many codeword transmission) bit ACK/NACK feedback information; Wherein, UE produces NACK as the ACK/NACK feedback information to the PDCCH that each code word on the descending carrier of the PDCCH that do not receive PDSCH or indicating downlink SPS resource and discharge or indicating downlink SPS resource discharge; The ACK/NACK feedback information of each descending carrier cascaded up on PUSCH, transmit.
When M=2, UE carries out the space merging to the ACK/NACK feedback information of many code words; Each descending sub frame on each descending carrier is produced the ACK/NACK feedback information of 1 bit, promptly each descending carrier common property is given birth to M bit ACK/NACK feedback information; Wherein, UE produces NACK as the ACK/NACK feedback information to the descending sub frame on the descending carrier of the PDCCH that do not receive PDSCH or indicating downlink SPS resource and discharge; The ACK/NACK feedback information of each descending carrier cascaded up on PUSCH, transmit.
When M=3 or 4, UE produces the ACK/NACK feedback information that the Z bit merges to each descending carrier, and this Z bit information represents that first descending sub frame begins continuous ACK number on this descending carrier, the promptly correct continuously descending sub frame number that receives.
Wherein, M is the descending sub frame number that corresponding current sub-frame of uplink carries out the ACK/NACK feedback.
For example, each descending carrier is produced the ACK/NACK feedback information (at first the ACK/NACK to many code words carries out the space merging) that the Z=2 bit merges, wherein 4 ACK can with a feedback states of 1 ACK or shared 2 bit informations of other ACK numbers, 2 bit informations of each descending carrier correspondence are cascaded up on PUSCH, transmit; As shown in table 2, the merging feedback bits of each carrier wave that merges for channel selection time domain.
Table 2
(3) ACK/NACK merging mode comprises that time domain ACK/NACK merges mode, this time domain ACK/NACK merging mode is: the descending sub frame of the M on each carrier wave is divided into the individual descending sub frame group of L(1≤L≤M), Ti(1≤Ti in each descending sub frame group≤M, the individual subframe of 1≤i≤L) merges the ACK/NACK feedback information of corresponding same numeral position in a plurality of descending sub frames in each descending sub frame group on the same descending carrier.When UE adopts above-mentioned time domain ACK/NACK to merge mode on PUCCH, the A bit ACK/NACK feedback information on the descending sub frame packet count L that UE merges according to time domain on last each descending carrier that adopts of PUCCH, each descending carrier after the merging of every group of descending sub frame correspondence and the descending carrier of UE polymerization/activation are counted N, determine ACK/NACK feedback information bits number and the feedback information sequence transmitted on PUSCH.
Further, when UE adopts above-mentioned time domain ACK/NACK to merge mode to the ACK/NACK feedback information on each descending carrier, UE can obtain the A bit ACK/NACK feedback information of each descending sub frame group correspondence on each descending carrier, with the A bit ACK after the merging of each descending sub frame group correspondence on a plurality of descending carriers/cascade of NACK feedback information together, obtain A * L * N bit ACK/NACK feedback information, on PUSCH, transmit.
In the embodiment of the invention,
, the descending sub frame of the M on each descending carrier is divided into L when group, and every group of descending sub frame that comprises counted Ti can be identical, also can be different; Descending sub frame packet mode on the different descending carriers can be identical, also can be different; More excellent, the descending sub frame packet mode on each descending carrier is T=M, L=1, and promptly UE is divided into one group with all M descending sub frame on the descending carrier and carries out time domain and merge, and finally obtains A * N bit ACK/NACK feedback information and transmit on PUSCH.
In addition, carry out the descending sub frame group that the space merges, the ACK/NACK number of bits of feedback A=1 after the merging of its correspondence for single codeword transmission or many code words ACK/NACK feedback information; Do not carry out the descending sub frame group that the space merges, the ACK/NACK number of bits of feedback A=2 after the merging of its correspondence for many codeword transmission and many code words ACK/NACK feedback information; M is the maximum of the descending sub frame number that carries out the ACK/NACK feedback of the correspondence of the current sub-frame of uplink of UE on each descending carrier.
At above-mentioned situation, time domain as shown in Figure 5 merges schematic diagram and time domain shown in Figure 6 merges schematic diagram, and Fig. 5 and Fig. 6 have provided the merging mode of two kinds of descending sub frame groupings, among Fig. 5, and T=4, L=1; Among Fig. 6, T1=2, T2=1, L=2.
(4) ACK/NACK merging mode comprises that frequency domain ACK/NACK merges mode, this frequency domain ACK/NACK merging mode is: N descending carrier of UE configuration is divided into the individual downstream carrier group of K(1≤K≤N), Pi(1≤Pi in each downstream carrier group≤N, the individual carrier wave of 1≤i≤K) merges the ACK/NACK feedback information of same descending sub frame correspondence on a plurality of descending carriers in the same downstream carrier group.When UE adopts above-mentioned frequency domain ACK/NACK to merge mode on PUCCH, B bit ACK/NACK feedback information after the descending carrier packet count K that the frequency domain that UE upward adopts according to PUCCH merges and the merging of every group of descending carrier correspondence is determined ACK/NACK feedback information bits number and the feedback information sequence transmitted on PUSCH.
Further, as UE when the ACK/NACK feedback information of same subframe position adopts above-mentioned frequency domain ACK/NACK to merge mode on a plurality of descending carriers in to every group of descending carrier, UE can obtain B bit ACK/NACK feedback information after the corresponding merging to each downstream carrier group, with the bit ACK of the B after the merging of every group of descending carrier/cascade of NACK feedback information together, obtain B * K bit ACK/NACK feedback information, on PUSCH, transmit.
In the embodiment of the invention,
, when N descending carrier was divided into the K group, every group of descending carrier that comprises counted P
i Can be identical, also can be different; More excellent, P=N, K=1, i.e. UE configuration or all descending carriers that activate are one group to carry out frequency domain and merges, and finally obtains B bit ACK/NACK feedback information and transmit on PUSCH.
In addition, carry out the downstream carrier group that the space merges, the ACK/NACK number of bits of feedback B=M after the merging of its correspondence for single codeword transmission or many code words ACK/NACK feedback information; Do not carry out the downstream carrier group that the space merges, the ACK/NACK number of bits of feedback B=2 * M after the merging of its correspondence for many codeword transmission and many code words ACK/NACK feedback information; M is the maximum of the descending sub frame number that carries out the ACK/NACK feedback of the correspondence of the current sub-frame of uplink of UE on each descending carrier.
At above-mentioned situation, frequency domain as shown in Figure 7 merges schematic diagram and frequency domain shown in Figure 8 merges schematic diagram, and the frequency domain that Fig. 7 and Fig. 8 have provided two kinds of descending carrier groupings merges mode, among Fig. 7, and P=3, K=1; Among Fig. 8, P1=1, P2=2, P3=1, K=3.
Need to prove, in actual applications, the assembled scheme of not getting rid of above-mentioned Merge Scenarios, or other ACK/NACK Merge Scenarioses, and the ACK/NACK feedback information cascade system after a plurality of groupings merging can be according to carrier wave order or subframe sequence arrangement, do not get rid of other possible sortords, repeat no more in the embodiment of the invention.
Step 402, UE determines to be used on the PUSCH resource of transferring ACK/NACK feedback information.
In the embodiment of the invention, UE under SPS PUSCH or TDD uplink-downlink configuration 0 PUSCH or the PUSCH in the FDD system on the resource of transmission ACK/NACK feedback information determine that mode comprises:
Mode one:
UE receives in advance one of this PUSCH configuration ACK/NACK resource offset parameter independently by high-level signaling
(this resource offset parameter
The employed resource of transferring ACK/NACK is with respect to the skew adjustment amount of the resource of PUSCH transmitting uplink data among the expression PUSCH), UE is according to this resource offset parameter
, and specified ACK/NACK Resource Unit RE number determine that mode (determining formula as the ACK/NACK RE that defines in the existing standard) calculates the RE number that this PUSCH goes up transmission ACK/NACK.
For example: adopt following computing formula to obtain being used for the RE resource number of transferring ACK/NACK
:
Wherein,
Be the ACK/NACK number of bits of feedback,
Be the scheduling bandwidth of current PUSCH in the current subframe, calculate with subcarrier (or RE) number,
Be the SC-FDMA(Signal-carrier frequency division multiple access in subframe in the PUSCH initial transmission, single-carrier frequency division multiple access) symbolic number,
Be the scheduling bandwidth of PUSCH initial transmission,
With
For PUSCH initial transmission code block is cut apart relevant information.
Mode two:
UE represents that by this resource offset parameter of ACK/NACK resource offset parameter Q(Q that high-level signaling receives in advance this PUSCH configuration the employed resource of transferring ACK/NACK goes up the ratio that maximum can be used for the resource of transferring ACK/NACK with PUSCH among the PUSCH), UE determines that according to resource offset parameter Q this PUSCH goes up the RE number of transmitting ACK/NACK.
For example, the ACK/NACK among the PUSCH can be in each time slot transmits in the SC-FDMA symbol of pilot tone both sides, and promptly the RE resource size that maximum can be used for transferring ACK/NACK in PUSCH channel is
,
Be the transmission bandwidth of PUSCH, with the RE(subcarrier) be unit, the ACK/NACK resource offset parameter Q of high-rise configuration can as shown in table 3ly be 1,3/4,1/2,1/4 etc., then UE determines that the RE number that is used for transferring ACK/NACK on this PUSCH is
The corresponding relation of table 3 2bit high-level signaling and ACK/NACK resource offset parameter Q
In aforesaid way one and the mode two, high-level signaling can be RRC(Radio Resource Control, Radio Resource control) signaling, MAC(Media Access Control, medium access control) signaling etc.
Mode three:
UE by activating SPS PUSCH the PDCCH signaling or the TDD system in the PDCCH signaling of PUSCH correspondence in the PDCCH signaling of PUSCH correspondence under the uplink-downlink configuration 0 or the FDD system, in resource offset indication territory obtain should PUSCH one ACK/NACK resource offset parameter independently
(be in the PDCCH signaling
In pre-configured K the ACK/NACK resource offset parameter of bit resource offset indication territory indication high-level signaling one, or in predefined K ACK/NACK resource offset parameter in the standard, this resource offset parameter
The employed resource of transferring ACK/NACK is with respect to the skew adjustment amount of the resource of PUSCH transmitting uplink data among the expression PUSCH), UE is according to the resource offset parameter
, and specified ACK/NACK RE number determine that mode (determining formula as the ACK/NACK RE that defines in the existing standard) calculates the RE number that this PUSCH goes up transmission ACK/NACK.
Similar in processing under this mode and the mode one, can indicate according to PDCCH
Calculate the RE resource number that is used for transferring ACK/NACK
, do not repeat them here.
Mode four:
UE is according to the PDCCH signaling of PUSCH correspondence in the PDCCH signaling of the PUSCH correspondence under the uplink-downlink configuration 0 in PDCCH signaling that activates SPS PUSCH or the TDD system or the FDD system, in to obtain an ACK/NACK resource offset parameter Q(that should PUSCH be in the PDCCH signaling in resource offset indication territory
One in predefined K the ACK/NACK resource offset parameter is indicated in bit resource offset indication territory, this resource offset parameter Q represents that the employed resource of transferring ACK/NACK and PUSCH go up the ratio that maximum can be used for the resource of transferring ACK/NACK among the PUSCH), UE determines that according to resource offset parameter Q this PUSCH goes up the RE number of transmission ACK/NACK.
When K=4, corresponding relation such as table 3; Similar in definite mode of the ACK/NACK resource under this mode and the mode two, do not repeat them here.
Step 403, the transmitted over resources ACK/NACK feedback information that is used for transferring ACK/NACK feedback information that UE determines on PUSCH.
Embodiment two
The embodiment of the invention provides the method for reseptance of a kind of ACK/NACK, and present embodiment is the ACK/NACK information at above-mentioned UE side transmission, the handling process of corresponding base station side.As shown in Figure 9, this method may further comprise the steps:
Step 901, base station are determined the ACK/NACK feedback information bits number that UE transmits on PUSCH.
In the embodiment of the invention, in the LTE-A system, the PUSCH that the UE that determines when the base station is used for transmitting uplink control information is the PUSCH that does not have corresponding PDCCH, or be the PUSCH under the uplink-downlink configuration 0 in the TDD system, or when being PUSCH in the FDD system, the transmission that has the ACK/NACK feeding back downlink is thought in the base station, be that the base station does not need the ACK/NACK feedback information on the PUSCH is carried out the DTX detection, determine that UE has always transmitted the ACK/NACK feedback information on this PUSCH, and then the ACK/NACK feedback information bits number that on this PUSCH, transmits of definite UE, be used to receive the ACK/NACK feedback information.
In the embodiment of the invention, the base station determines that the mode of the ACK/NACK feedback information bits number that UE transmits comprises on PUSCH:
Mode one: the base station is counted the descending sub frame that corresponding current sub-frame of uplink on N and each descending carrier carries out the ACK/NACK feedback according to the descending carrier of UE configuration and is counted M, determines the ACK/NACK number of bits of feedback of transmitting on PUSCH.
At each descending carrier, when this descending carrier was single codeword transmission mode or many codeword transmission pattern and the merging of employing space, the ACK/NACK feedback information of the corresponding M bit of this descending carrier was determined in the base station; When this descending carrier is many codeword transmission pattern and when not adopting the space to merge, the ACK/NACK feedback information of the corresponding 2M bit of this descending carrier is determined in the base station.Wherein M is the descending sub frame number that corresponding current sub-frame of uplink carries out the ACK/NACK feedback.
Mode two: the base station merges mode according to the Physical Uplink Control Channel PUCCH transformat and/or the ACK/NACK of the transferring ACK/NACK feedback information of current configuration of UE or use, determines the ACK/NACK number of bits of feedback of transmitting on PUSCH.
(1) current configuration of UE or the PUCCH transformat that uses are PUCCH format (being that UE adopts PUCCH format 3 forms transferring ACK/NACK feedback information on PUCCH) 3 o'clock, at each descending carrier; When this descending carrier was single codeword transmission mode or many codeword transmission pattern and the merging of employing space, the ACK/NACK feedback information of the corresponding M bit of this descending carrier was determined in the base station; When this descending carrier is many codeword transmission pattern and when not adopting the space to merge, the ACK/NACK feedback information of the corresponding 2M bit of this descending carrier is determined in the base station; Wherein, M is the descending sub frame number that corresponding current sub-frame of uplink carries out the ACK/NACK feedback.
(2) current configuration of UE or the PUCCH transformat that uses are that UE adopts PUCCH format 1b with channel selection form transferring ACK/NACK feedback information on PUCCH as PUCCH format 1b with channel selection() time:
When M=1, the base station determines that UE does not carry out the space merging to the ACK/NACK feedback information of many code words; Determine the ACK/NACK feedback information of corresponding 1 bit of PDCCH that each code word on each descending carrier or indicating downlink SPS resource discharge, determine each descending carrier corresponding M or 2M bit ACK/NACK feedback information altogether;
When M=2, the base station determines that UE carries out the space merging to the ACK/NACK feedback information of many code words; Determine the ACK/NACK feedback information of corresponding 1 bit of each descending sub frame on each descending carrier, determine each descending carrier corresponding M bit ACK/NACK feedback information altogether;
When M=3 or 4, the ACK/NACK feedback information that the corresponding Z bit of each descending carrier merges is determined in the base station, and the Z bit information represents that first descending sub frame begins continuous ACK number on this descending carrier.
Wherein, M is the descending sub frame number that corresponding current sub-frame of uplink carries out the ACK/NACK feedback.
It should be noted that under above-mentioned (1) and (2) that the base station determines that it is the ACK/NACK feedback information bits number that UE transmits that the ACK/NACK feedback information bits of each descending carrier correspondence is counted sum on PUSCH.
(3) ACK/NACK merging mode comprises that time domain ACK/NACK merges mode or frequency domain ACK/NACK merges mode; This time domain ACK/NACK merging mode is: the descending sub frame of the M on each carrier wave is divided into the individual descending sub frame group of L(1≤L≤M), Ti(1≤Ti in each descending sub frame group≤M, the individual subframe of 1≤i≤L) merges the ACK/NACK feedback information of corresponding same numeral position in a plurality of descending sub frames in each descending sub frame group on the same descending carrier.This frequency domain ACK/NACK merging mode is: N descending carrier of UE configuration is divided into the individual downstream carrier group of K(1≤K≤N), Pi(1≤Pi in each downstream carrier group≤N, the individual carrier wave of 1≤i≤K) merges the ACK/NACK feedback information of same descending sub frame correspondence on a plurality of descending carriers in the same downstream carrier group.
When the base station determines that UE adopts time domain ACK/NACK to merge mode on PUCCH, the base station according to UE after the merging of every group of descending sub frame correspondence on descending sub frame packet count L that time domain on each descending carrier that adopts on the PUCCH merges, each descending carrier A bit ACK/NACK feedback information and the descending carrier of UE polymerization/activation count N, determine the ACK/NACK feedback information bits number that on PUSCH, transmits.
Further, when the base station determined that UE adopts time domain ACK/NACK to merge mode on PUCCH, the base station determined that UE is at the bit number sum A * L * N of the ACK/NACK feedback information bits number that transmits on the PUSCH for the A bit ACK/NACK feedback information on each descending carrier, after the merging of the descending sub frame group correspondence that merges of each time domain.
When the base station determines that UE adopts frequency domain ACK/NACK to merge mode on PUCCH, the ACK/NACK feedback information bits number that transmits is determined according to the B bit ACK/NACK feedback information of UE after the merging of descending carrier packet count K that the frequency domain that adopts on the PUCCH merges and every group of descending carrier correspondence in the base station on PUSCH.
Further, when the base station determined that UE adopts frequency domain ACK/NACK to merge mode on PUCCH, the base station determined that UE is the bit number sum B * K of the B bit ACK/NACK feedback information after the merging of the downstream carrier group correspondence that merges of every group of frequency domain at the ACK/NACK feedback information bits number that transmits on the PUSCH.
Step 902, base station determine to be used on the PUSCH resource of transferring ACK/NACK feedback information.
Concrete, the base station disposes ACK/NACK resource offset parameter to the corresponding PUSCH of UE by the resource offset territory in high-level signaling or the PDCCH signaling
, the base station is according to the resource offset parameter
, and specified ACK/NACK Resource Unit RE number determine that formula calculates the RE number that PUSCH goes up transmission ACK/NACK feedback information; ACK/NACK resource offset parameter
The resource of transferring ACK/NACK feedback information and the deviant of upstream data resource among the expression PUSCH; Perhaps,
The base station disposes ACK/NACK resource offset parameter Q to the corresponding PUSCH of UE by the resource offset territory in high-level signaling or the PDCCH signaling, and the base station determines that according to resource offset parameter Q PUSCH goes up the RE number of transmission ACK/NACK feedback information; Resource offset parameter Q represents that the resource of transferring ACK among the PUSCH/NACK feedback information and PUSCH go up the ratio that maximum can be used for the resource of transferring ACK/NACK feedback information;
Wherein, the PDCCH signaling comprises the PDCCH signaling of PUSCH correspondence in the PDCCH signaling of 0 time PUSCH correspondence of uplink-downlink configuration in the PDCCH signaling that activates SPS PUSCH or the TDD system or the FDD system.
The resource that is used for transferring ACK/NACK feedback information that step 903, base station are determined on PUSCH receives the ACK/NACK feedback information that UE sends according to ACK/NACK feedback information bits number.
Embodiment three
Based on the inventive concept same with said method, a kind of user equipment (UE) also is provided in the embodiment of the invention, as shown in figure 10, this UE comprises:
Judge module 11, be used for judging that the Physical Uplink Shared Channel PUSCH that is used for transmitting uplink control information that UE determines does not have the PUSCH of corresponding physical down control channel PDCCH or is the PUSCH under the TDD system uplink-downlink configuration 0, or be PUSCH in the FDD system, and be used for judging that descending sub frame that sub-frame of uplink that described UE sends described PUSCH in correspondence carries out the ACK/NACK feedback does not receive the PDCCH that Physical Downlink Shared Channel PDSCH or indicating downlink semi-continuous scheduling SPS resource discharge;
Information determination module 12 is used to determine the ACK/NACK feedback information that transmits on described PUSCH;
Resource determination module 13 is used for determining being used to transmit on the described PUSCH resource of described ACK/NACK feedback information;
Sending module 14 is used for the described ACK/NACK feedback information of determining of transmitted over resources that is used to transmit described ACK/NACK feedback information on described PUSCH.
Described information determination module 12, specifically be used for counting the descending sub frame that corresponding current sub-frame of uplink on N and each descending carrier carries out the ACK/NACK feedback and count M, determine ACK/NACK number of bits of feedback and the feedback information sequence on described PUSCH, transmitted according to the descending carrier of self configuration.
At each descending carrier; Described information determination module 12 also is used for this descending carrier being produced the ACK/NACK feedback information of M bit when this descending carrier is single codeword transmission mode or many codeword transmission pattern and the merging of employing space;
When this descending carrier is many codeword transmission pattern and when not adopting the space to merge, this descending carrier is produced the ACK/NACK feedback information of 2M bit;
Wherein, the descending sub frame that does not receive the PDCCH that PDSCH or indicating downlink SPS resource discharge is produced NACK as the ACK/NACK feedback information.
Described information determination module 12, the Physical Uplink Control Channel PUCCH transformat and/or the ACK/NACK that specifically are used for the transferring ACK/NACK feedback information according to current configuration or use merge mode, determine ACK/NACK number of bits of feedback and the feedback information sequence transmitted on described PUSCH.
Current configuration or the PUCCH transformat that uses are during as PUCCH format 3, at each descending carrier; Described information determination module 12 also is used for this descending carrier being produced the ACK/NACK feedback information of M bit when this descending carrier is single codeword transmission mode or many codeword transmission pattern and the merging of employing space;
When this descending carrier is many codeword transmission pattern and when not adopting the space to merge, this descending carrier is produced the ACK/NACK feedback information of 2M bit;
Wherein, described M is the descending sub frame number that corresponding current sub-frame of uplink carries out ACK/NACK feedback, and the descending sub frame that does not receive the PDCCH that PDSCH or indicating downlink SPS resource discharge is produced NACK as the ACK/NACK feedback information.
Current configuration or the PUCCH transformat that uses are during as PUCCH format 1b with channel selection; Described information determination module 12 also is used for when M=1, the ACK/NACK feedback information of many code words is not carried out the space merge; The PDCCH that each code word on each descending carrier or indicating downlink SPS resource are discharged produces the ACK/NACK feedback information of 1 bit, and each descending carrier common property is given birth to M or 2M bit ACK/NACK feedback information; Wherein, the PDCCH that each code word on the descending carrier that does not receive the PDCCH that PDSCH or indicating downlink SPS resource discharge or indicating downlink SPS resource are discharged produces NACK as the ACK/NACK feedback information;
When M=2, the ACK/NACK feedback information of many code words is carried out the space merge; Each descending sub frame on each descending carrier is produced the ACK/NACK feedback information of 1 bit, each descending carrier common property is given birth to M bit ACK/NACK feedback information; Wherein, the descending sub frame on the descending carrier that does not receive the PDCCH that PDSCH or indicating downlink SPS resource discharge is produced NACK as the ACK/NACK feedback information;
When M=3 or 4, each descending carrier is produced the ACK/NACK feedback information that the Z bit merges, described Z bit information represents that first descending sub frame begins continuous ACK number on this descending carrier;
Wherein, described M is the descending sub frame number that corresponding current sub-frame of uplink carries out the ACK/NACK feedback.
Described sending module 14 specifically is used for transmitting on described PUSCH with the ACK/NACK feedback information cascade of each descending carrier correspondence together.
ACK/NACK merging mode comprises that time domain ACK/NACK merges mode or frequency domain ACK/NACK merges mode; Described information determination module 12, also be used for when on PUCCH, adopting time domain ACK/NACK to merge mode, the A bit ACK/NACK feedback information on the descending sub frame packet count L that time domain merges on each descending carrier that go up to adopt according to PUCCH, each descending carrier after the merging of every group of descending sub frame correspondence and the descending carrier of UE polymerization/activation are counted N, determine ACK/NACK feedback information bits number and the feedback information sequence transmitted on described PUSCH; Perhaps,
When on PUCCH, adopting frequency domain ACK/NACK to merge mode, B bit ACK/NACK feedback information after the descending carrier packet count K that the frequency domain that upward adopts according to PUCCH merges and the merging of every group of descending carrier correspondence is determined ACK/NACK feedback information bits number and the feedback information sequence transmitted on PUSCH.
Described sending module 14, also be used for when on PUCCH, adopting time domain ACK/NACK to merge mode, after the merging of the descending sub frame group correspondence that each time domain on each descending carrier is merged the A bit ACK/cascade of NACK feedback information together, obtain A * L * N bit ACK/NACK feedback information, on described PUSCH, transmit; Perhaps,
When adopting frequency domain ACK/NACK to merge mode on PUCCH, the B bit ACK/NACK feedback information cascade after the merging of the downstream carrier group correspondence that every group of frequency domain merged obtains B * K bit ACK/NACK feedback information together, transmits on described PUSCH.
Described
resource determination module 13 specifically is used for obtaining by the resource offset territory of high-level signaling or PDCCH signaling the ACK/NACK resource offset parameter of corresponding described PUSCH
, according to described resource offset parameter
, and specified ACK/NACK Resource Unit RE number determine that formula calculates the RE number that described PUSCH goes up the described ACK/NACK feedback information of transmission; Described ACK/NACK resource offset parameter
The resource of transferring ACK/NACK feedback information and the deviant of upstream data resource among the expression PUSCH; Perhaps,
Obtain the ACK/NACK resource offset parameter Q of corresponding described PUSCH by the resource offset territory in high-level signaling or the PDCCH signaling, determine that according to described resource offset parameter Q described PUSCH goes up the RE number of the described ACK/NACK feedback information of transmission; Described resource offset parameter Q represents that the resource of transferring ACK among the PUSCH/NACK feedback information and PUSCH go up the ratio that maximum can be used for the resource of transferring ACK/NACK feedback information;
Wherein, described PDCCH signaling comprises the PDCCH signaling of PUSCH correspondence in the PDCCH signaling of 0 time PUSCH correspondence of uplink-downlink configuration in the PDCCH signaling that activates SPS PUSCH or the TDD system or the FDD system.
Embodiment four
Based on the inventive concept same with said method, a kind of base station equipment also is provided in the embodiment of the invention, as shown in figure 11, this base station equipment comprises:
Judge module 21, be used for judging that the Physical Uplink Shared Channel PUSCH that UE is used for transmitting uplink control information does not have the PUSCH of corresponding physical down control channel PDCCH or is the PUSCH under the TDD system uplink-downlink configuration 0, or when being PUSCH in the FDD system, and further judging and have the ACK/NACK transmission of feedback information on the described PUSCH;
Information determination module 22 is used for the ACK/NACK feedback information bits number of determining that described UE transmits on described PUSCH;
Resource determination module 23 is used for determining to be used on the described PUSCH resource of transferring ACK/NACK feedback information;
Receiver module 24 is used for the resource that is used for transferring ACK/NACK feedback information definite on described PUSCH, receives the ACK/NACK feedback information that described UE sends according to described ACK/NACK feedback information bits number.
Described information determination module 22, specifically be used for counting the descending sub frame that corresponding current sub-frame of uplink on N and each descending carrier carries out the ACK/NACK feedback and count M, determine the ACK/NACK number of bits of feedback of on described PUSCH, transmitting according to the descending carrier of described UE configuration.
At each descending carrier, described information determination module 22 also is used for determining the ACK/NACK feedback information of the corresponding M bit of this descending carrier when this descending carrier is single codeword transmission mode or many codeword transmission pattern and the merging of employing space;
When this descending carrier is many codeword transmission pattern and when not adopting the space to merge, determine the ACK/NACK feedback information of the corresponding 2M bit of this descending carrier.
Described information determination module 22, specifically be used for Physical Uplink Control Channel PUCCH transformat and/or ACK/NACK merging mode, determine the ACK/NACK number of bits of feedback of on described PUSCH, transmitting according to the transferring ACK/NACK feedback information of current configuration of described UE or use.
Current configuration of described UE or the PUCCH transformat that uses are during as PUCCH format 3, at each descending carrier; Described information determination module 22 also is used for determining the ACK/NACK feedback information of the corresponding M bit of this descending carrier when this descending carrier is single codeword transmission mode or many codeword transmission pattern and the merging of employing space;
When this descending carrier is many codeword transmission pattern and when not adopting the space to merge, determine the ACK/NACK feedback information of the corresponding 2M bit of this descending carrier;
Wherein, described M is the descending sub frame number that corresponding current sub-frame of uplink carries out the ACK/NACK feedback.
Current configuration of described UE or the PUCCH transformat that uses are during as PUCCH format 1b with channel selection; Described information determination module 22 also is used for when M=1, determines that described UE does not carry out the space merging to the ACK/NACK feedback information of many code words; Determine the ACK/NACK feedback information of corresponding 1 bit of PDCCH that each code word on each descending carrier or indicating downlink SPS resource discharge, determine each descending carrier corresponding M or 2M bit ACK/NACK feedback information altogether;
When M=2, determine that described UE carries out the space merging to the ACK/NACK feedback information of many code words; Determine the ACK/NACK feedback information of corresponding 1 bit of each descending sub frame on each descending carrier, determine each descending carrier corresponding M bit ACK/NACK feedback information altogether;
When M=3 or 4, determine the ACK/NACK feedback information that the corresponding Z bit of each descending carrier merges, described Z bit information represents that first descending sub frame begins continuous ACK number on this descending carrier;
Wherein, described M is the descending sub frame number that corresponding current sub-frame of uplink carries out the ACK/NACK feedback.
Described information determination module 22, it is the ACK/NACK feedback information bits number that described UE transmits on described PUSCH that the ACK/NACK feedback information bits that is further used for determining each descending carrier correspondence is counted sum.
ACK/NACK merging mode comprises that time domain ACK/NACK merges mode or frequency domain ACK/NACK merges mode;
Described information determination module 22, also be used for when definite described UE adopts time domain ACK/NACK to merge mode on PUCCH, according to described UE after the merging of every group of descending sub frame correspondence on descending sub frame packet count L that time domain on each descending carrier that adopts on the PUCCH merges, each descending carrier A bit ACK/NACK feedback information and the descending carrier of described UE polymerization/activation count N, determine the ACK/NACK feedback information bits number that on described PUSCH, transmits; Perhaps,
When definite described UE adopts frequency domain ACK/NACK to merge mode on PUCCH, according to the B bit ACK/NACK feedback information of described UE after the merging of descending carrier packet count K that the frequency domain that adopts on the PUCCH merges and every group of descending carrier correspondence, determine the ACK/NACK feedback information bits number that on PUSCH, transmits.
Described information determination module 22, be further used for when definite described UE adopts time domain ACK/NACK to merge mode on PUCCH, determine that described UE is at the bit number sum A * L * N of the ACK/NACK feedback information bits number that transmits on the described PUSCH for the A bit ACK/NACK feedback information on each descending carrier, after the merging of the descending sub frame group correspondence that merges of each time domain; Perhaps,
When definite described UE adopts frequency domain ACK/NACK to merge mode, determine that described UE is the bit number sum B * K of the B bit ACK/NACK feedback information after the merging of the downstream carrier group correspondence that merges of every group of frequency domain at the ACK/NACK feedback information bits number that transmits on the described PUSCH on PUCCH.
Described
resource determination module 23 specifically is used for resource offset territory by high-level signaling or PDCCH signaling and disposes ACK/NACK resource offset parameter to the corresponding described PUSCH of described UE
, according to described resource offset parameter
, and specified ACK/NACK Resource Unit RE number determine that formula calculates the RE number that described PUSCH goes up the described ACK/NACK feedback information of transmission; Described ACK/NACK resource offset parameter
The resource of transferring ACK/NACK feedback information and the deviant of upstream data resource among the expression PUSCH; Perhaps,
Dispose ACK/NACK resource offset parameter Q by the resource offset territory in high-level signaling or the PDCCH signaling, determine that according to described resource offset parameter Q described PUSCH goes up the RE number of the described ACK/NACK feedback information of transmission to the corresponding described PUSCH of described UE; Described resource offset parameter Q represents that the resource of transferring ACK among the PUSCH/NACK feedback information and PUSCH go up the ratio that maximum can be used for the resource of transferring ACK/NACK feedback information;
Wherein, described PDCCH signaling comprises the PDCCH signaling of PUSCH correspondence in the PDCCH signaling of 0 time PUSCH correspondence of uplink-downlink configuration in the PDCCH signaling that activates SPS PUSCH or the TDD system or the FDD system.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, 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 among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment 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.