CN104349475A - TDD-FDD (time division duplex-frequency division duplex) cross-carrier scheduling method and device - Google Patents
TDD-FDD (time division duplex-frequency division duplex) cross-carrier scheduling method and device Download PDFInfo
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Abstract
The invention provides an HARQ (hybrid automatic repeat request) time sequence method in a cross-carrier scheduling scene in a TDD-FDD (time division duplex-frequency division duplex) combination system. In one embodiment, the PUSCH (physical uplink shared channel) scheduling follows the time sequence of an FDD system, and the repeating follows the time sequence of the TDD system. When the technical scheme provided by the invention is used, the occurrence of DCI (downlink control information) of the TDD system on a PCC (primary carrier component) is avoided, the problem of PUSCH repeating subframe and downlink subframe conflict caused by an uplink synchronization HARQ (hybrid automatic repeat request) is also avoided, meanwhile, the compatibility with the existing system is maintained to the greatest degree.
Description
Technical field
The present invention relates to the scheme of dispatching in time division duplex-Frequency Division Duplexing (FDD) (TDD-FDD:Time Division Duplex-Frequency Division Duplex) association system, particularly relate to the timing scheme across carrier dispatching based on TDD-FDD Long Term Evolution (LTE-Long Term Evolution) system.
Background technology
In traditional third generation partner program (3GPP – 3rd Generation Partner Project) Long Term Evolution (LTE-Long Term Evolution) system, define two kinds of duplex modes, i.e. Frequency Division Duplexing (FDD) (FDD-Frequency Division Duplex) system and time division duplex (TDD-Time Division Duplex) system.FDD adopts frame structure 1, TDD to adopt frame structure 2.The two difference is that each subframe of FDD frame structure is 1 millisecond (ms-millisecond); and TDD system defines 1 ~ 2 special subframe in each frame (10 subframes); special subframe is by downlink synchronization slot, and protection interval, uplink synchronous time slot three part is formed.
In LTE system, communication between base station and subscriber equipment (UE-User Equipment) is dispatched by Physical Downlink Control Channel (PDCCH-Physical Downlink Control Channel), and the information of the upper transmission of PDCCH becomes Downlink Control Information (DCI-Downlink Control Information).Further, DCI is divided into uplink scheduling DCI and descending scheduling DCI, and the former dispatches UE and sends upstream data, and the latter dispatches UE downlink data receiving.By the end of 3GPP version 11(R11-Release11), { 0,4} is uplink scheduling DCI to DCI format, and { 1,1A, 1B, 1C, 1D, 2,2A, 2B, 2C, 2D} are descending scheduling DCI to DCI format, and { 3,3A} is for adjusting uplink transmission power for DCI format.For TDD system, extra bit (namely described additional bit does not occur in FDD system) is comprised in DCI, the descending allocation index (DAI-Downlink Assignment Index) of such as 2 bits or upper line index (ULI-Uplink Index), the interception reference signal request (Sounding Reference Signal Request) of 1 bit, the hybrid automatic repeat-request (HARQ-Hybrid Automatic Repeat Request) of extra 1 bit.Therefore, under identical system configuration and DCI format condition, DCI is usual than 2 ~ 4 bits many in FDD system in a tdd system.
In order to improve the peak rate of communication and provide larger dispatching flexibility, 3GPP introduces carrier aggregation (CA-Carrier Aggregation) technology, namely allows UE more than simultaneously transceiving data on a carrier wave.When UE has been configured more than 1 carrier wave, wherein have a carrier wave to be main carrier (PCC-Primary Carrier Component), other have been auxiliary carrier wave (SCC-Secondary Carrier Component).Further, be introduced into 3GPP across carrier dispatching technology, it is that the carrier wave instructions field (CIF-Carrier Indicator Field) that namely DCI increases by 3 bits is used to indicate carrier wave that this DCI dispatches for which in candidate carrier.The CIF-value of PCC is fixed as 0.Whether system is configured in current DCI containing CIF by high-level signaling.The UE high-level signaling read on PCC obtains the system information of PCC and SCC, and described high-level signaling is wireless heterogeneous networks (RRC-Radio Resource Control) layer signaling.
Traditional CA performs in same dual-mode inside, i.e. multiple TDD carrier aggregation or multiple FDD carrier aggregation.And 3GPP wireless access network the 60th plenary session (RAN#60plenary) have passed a new research topic-LTE TDD-FDD association system (LTE TDD – FDD Joint Operation), namely UE accesses TDD and FDD network to obtain higher traffic rate or better communication experiences simultaneously.One intuitively scheme be that traditional carrier aggregation scheme is expanded to TDD-FDD association system, namely between TDD carrier wave and FDD carrier wave, perform carrier aggregation scheme.
When employing FDD carrier wave is PCC, TDD carrier wave is SCC, the sequential of scheduling needs design, and described scheduling sequential comprises uplink scheduling sequential and descending scheduling sequential.The sequential of described uplink scheduling comprises the sequential relationship between multiple step: base station sends uplink scheduling DCI, UE physically row shared channel (PUSCH) sends data according to the scheduling of described DCI, base station is sent to response/non-response (ACK/NACK) on physical mixed HARQ channel (PHICH-Physical HARQ Indicator Channel), and UE sends data according to described ACK/NACK on PUSCH.The sequential relationship that the sequential of described descending scheduling comprises the steps: base station sends descending scheduling DCI and data, UE feeding back uplink ACK/NACK.
The invention discloses the solution for the problems referred to above in LTE TDD-FDD association system.
Summary of the invention
The invention discloses the method in a kind of subscriber equipment (UE), wherein, comprise the steps:
A. on the subframe n of first carrier, receive the first descending control instruction (DCI)
B. on the subframe n+k of the second carrier wave, upstream data is sent according to the scheduling of a DCI
Wherein, described n is integer, and described k is Physical Uplink Shared Channel (PUSCH) scheduler latency in Frequency Division Duplexing (FDD) Long Term Evolution (FDD-LTE) system, and first carrier is FDD descending carrier, second carrier wave is time division duplex (TDD) carrier wave, and a DCI is uplink scheduling DCI.
The scheduler latency of described PUSCH is the absolute value of the difference of the subframe index that uplink scheduling DCI and corresponding PUSCH send, and in FDD-LTE system, the scheduler latency of described PUSCH is 4.Described FDD carrier wave is the carrier wave of the support LTE system in FDD frequency range, and described TDD carrier wave is the carrier wave of the support LTE system in TDD frequency range.Described uplink scheduling DCI refers to DCI format { 0,4} and other DCI format defined in the 3GPP version in future.
Although current 3GPP specification does not support the SFB state on SCC, scheme disclosed by the invention is applicable to the SFB state on SCC.Be in subframe bundle status (SFB-SubFrame Bundling) if current, the continuous sub-frame of uplink being in bundled window after described subframe n+k also will send upstream data according to the scheduling of a DCI.
Concrete, according to an aspect of the present invention, it is characterized in that, also comprise the steps:
C. s subframe after the described subframe n+k of first carrier receives the response/non-response (ACK/NACK) for described upstream data
Wherein, described s is one of following:
The delay of feedback of the physical hybrid automatic repeat request indicator channel (PHICH) in-Frequency Division Duplexing (FDD) Long Term Evolution (FDD-LTE) system.
The delay of feedback of described PHICH is the absolute value that PUSCH sends the difference of the index of subframe and the index of corresponding descending ACK/NACK subframe, in the normal condition of FDD-LTE system, the delay of feedback of described PHICH is 4, in the SFB state of FDD-LTE, the delay of feedback of described PHICH is 4+w-1, and wherein w is the sub-frame number in bundled window.
The delay of feedback of the physical hybrid automatic repeat request indicator channel (PHICH) in-time division duplex Long Term Evolution (TDD-LTE) system.
In a tdd system, the delay of feedback of described PHICH is k
pHICHdetermined by tdd frame structural allocation, in the normal condition of TDD-LTE system, the span of the delay of feedback of described PHICH is { 4,6,7}, in the SFB state of TDD-LTE system, the span of the delay of feedback of described PHICH is { 4,6,7}+w-1, wherein w is the sub-frame number in bundled window.
Concrete, according to above-mentioned aspect of the present invention, it is characterized in that, also comprise the steps:
D. t subframe after the described subframe n+k of the second carrier wave sends up follow-up data, and described up follow-up data and described upstream data belong to same hybrid automatic repeat-request (HARQ) process
Wherein, described t is that PUSCH in the TDD-LTE system determined by the position of the frame structure of the second carrier wave and described subframe n+k sends interval.
Described PUSCH sends the absolute value that interval refers to the difference of the index of the subframe that the double PUSCH in same HARQ process sends.In the normal condition of TDD-LTE system, for tdd frame structure #{1,2,3,4,5}, described t is 10; For tdd frame structure #{0,6}, described t may be different for different subframes.Such as the subframe #2 in frame structure #6, #3, #4, #7, #8, described t is respectively 11, and 11,13,11,14.In the SFB state of TDD-LTE system, for tdd frame structure #{0,1,6}, described t is that the value in normal condition adds a side-play amount, and the span of described side-play amount is that { 2,3,5,6,8,9}, other tdd frame structure does not support SFB state.
The transmission subframe of the PUSCH that the PUSCH transmission interval of reusing TDD system ensure that in LTE system under uplink synchronization HARQ mechanism is sub-frame of uplink.In addition, the PUSCH reusing TDD system sends interval and means the ascending HARQ course number of reusing TDD system, described uplink retransmission process is several to be determined according to tdd frame structure, such as, in the HARQ of normal TDD system transmission mode 1, tdd frame structure #0 supports 7 ascending HARQ courses and tdd frame structure #5 supports 1 ascending HARQ course; In the HARQ of subframe binding TDD system transmission mode 1, tdd frame structure #0 supports 3 ascending HARQ courses and tdd frame structure #1 supports 2 ascending HARQ courses.Above-mentioned aspect of the present invention ensure that the re-transmission of PUSCH can not occur in descending sub frame, avoids ascending-descending subframes conflict.
If described up follow-up data is triggered by above-mentioned response/non-response, then: if described response/non-response is response (ACK), then described up follow-up data is new upstream data; If described response/non-response is non-response (NACK) and does not reach maximum retransmission, then described up follow-up data retransmits upstream data; If described response/non-response is non-response (NACK) and reaches maximum retransmission, then described up follow-up data is new upstream data.
Concrete, according to above-mentioned aspect of the present invention, it is characterized in that, also comprise the steps: before described step D
D0. receive the 3rd DCI, described 3rd DCI in u subframe before the transmission subframe of described up follow-up data and be used for the up follow-up data of execution cost
Wherein, described u is Physical Uplink Shared Channel (PUSCH) scheduler latency in Frequency Division Duplexing (FDD) Long Term Evolution (FDD-LTE) system, is 4.
Above-mentioned steps D0 is applicable to described up follow-up data and is triggered by DCI.
Concrete, according to an aspect of the present invention, it is characterized in that, a DCI meets the uplink scheduling DCI in FDD-LTE system.
Bit number and the bit implication of the one DCI map according to the definition of FDD system, namely need not carry the distinctive DCI bit of TDD, decrease DCI signaling consumption.
Concrete, according to an aspect of the present invention, it is characterized in that, also comprise the steps:
E. on the subframe m of first carrier, receive the second descending control instruction (DCI)
F. on the subframe m of the second carrier wave according to the scheduled reception downlink data of the 2nd DCI
G. on the subframe m+4 of the 3rd carrier wave, send the response/non-response (ACK/NACK) for described downlink data
Wherein, described m is integer, and the 3rd carrier wave is the FDD up-link carrier with first carrier pairing, and the 2nd DCI meets the descending scheduling DCI in FDD-LTE system.
Compare the descending scheduling sequential of TDD, the descending scheduling sequential of FDD provides shorter time delay, and therefore the descending scheduling sequential of FDD has been reused in above-mentioned aspect.Described descending scheduling DCI is DCI format { 1,1A, 1B, 1C, 1D, the DCI format that may define in the 3GPP version in 2,2A, 2B, 2C, 2D} and other futures.
The invention discloses a kind of method in system equipment, wherein, comprise the steps:
A. on the subframe n of first carrier, send the first descending control instruction (DCI)
B. on the subframe n+k of the second carrier wave, the scheduling according to a DCI is received and the upstream data sent
Wherein, described n is integer, and described k is the PUSCH scheduler latency in FDD-LTE system, and first carrier is FDD descending carrier, and the second carrier wave is TDD carrier wave, and a DCI is uplink scheduling DCI.
Concrete, according to an aspect of the present invention, it is characterized in that, also comprise the steps:
C. s subframe after the described subframe n+k of first carrier sends the response/non-response (ACK/NACK) for described upstream data
Wherein, described s is one of following:
The delay of feedback of the PHICH in-FDD-LTE system.
The delay of feedback of the PHICH in-TDD-LTE system.
Concrete, according to above-mentioned aspect of the present invention, it is characterized in that, also comprise the steps:
D. t subframe after the described subframe n+k of the second carrier wave receives up follow-up data, and described up follow-up data and described upstream data belong to same HARQ process
Wherein, described t is that PUSCH in the TDD-LTE system determined by the position of the frame structure of the second carrier wave and described subframe n+k sends interval.
Concrete, according to above-mentioned aspect of the present invention, it is characterized in that, also comprise the steps: before described step D
D0. send the 3rd DCI, described 3rd DCI in u subframe before the transmission subframe of described up follow-up data and be used for the up follow-up data of execution cost
Wherein, described u is the PUSCH scheduler latency in FDD-LTE system, is 4.
Concrete, according to an aspect of the present invention, it is characterized in that, a DCI meets the uplink scheduling DCI in FDD-LTE system.
Concrete, according to an aspect of the present invention, it is characterized in that, also comprise the steps:
E. on the subframe m of first carrier, send the second descending control instruction (DCI)
F. on the subframe m of the second carrier wave, downlink data is sent according to the scheduling of the 2nd DCI
G. on the subframe m+4 of the 3rd carrier wave, receive the response/non-response (ACK/NACK) for described downlink data
Wherein, described m is integer, and the 3rd carrier wave is the FDD up-link carrier with first carrier pairing, and the 2nd DCI meets the descending scheduling DCI in FDD-LTE system.
The invention discloses a kind of subscriber equipment (UE), it is characterized in that, this equipment comprises:
First module: receive the first descending control instruction (DCI) on the subframe n of first carrier
Second module: send upstream data according to the scheduling of a DCI on the subframe n+k of the second carrier wave
Wherein, described n is integer, and described k is the PUSCH scheduler latency in FDD-LTE system, and first carrier is FDD descending carrier, and the second carrier wave is time division duplex (TDD) carrier wave, and a DCI is uplink scheduling DCI.
3rd module: s subframe after the described subframe n+k of first carrier receives the response/non-response (ACK/NACK) for described upstream data
Wherein, described s is one of following:
The delay of feedback of the PHICH in-FDD-LTE system
The delay of feedback of the PHICH in-TDD-LTE system
As an embodiment, also comprise in the said equipment:
Four module: t subframe after the described subframe n+k of the second carrier wave sends up follow-up data, described up follow-up data and described upstream data belong to same HARQ process
Wherein, described t is that PUSCH in the TDD-LTE system determined by the position of the frame structure of the second carrier wave and described subframe n+k sends interval.
As another embodiment, also comprise in the said equipment:
5th module: receive the 2nd DCI on the subframe m of first carrier
6th module: according to the scheduled reception downlink data of the 2nd DCI on the subframe m of the second carrier wave
7th module: send the response/non-response (ACK/NACK) for described downlink data on the subframe m+4 of the 3rd carrier wave
Wherein, described m is integer, and the 3rd carrier wave is the FDD up-link carrier with first carrier pairing, and the 2nd DCI meets the descending scheduling DCI in FDD-LTE system.
The invention discloses a kind of system side equipment, it is characterized in that, this equipment comprises:
First module: send a DCI on the subframe n of first carrier
Second module: receive the scheduling according to a DCI and the upstream data sent on the subframe n+k of the second carrier wave
Wherein, described n is integer, and described k is the PUSCH scheduler latency in FDD-LTE system, and first carrier is FDD descending carrier, and the second carrier wave is TDD carrier wave, and a DCI is uplink scheduling DCI.
3rd module: s subframe after the described subframe n+k of first carrier sends the response/non-response (ACK/NACK) for described upstream data
Wherein, described s is one of following:
The delay of feedback of the PHICH in-FDD-LTE system
The delay of feedback of the PHICH in-TDD-LTE system
As an embodiment, also comprise in the said equipment:
Four module: t subframe after the described subframe n+k of the second carrier wave receives up follow-up data, described up follow-up data and described upstream data belong to same HARQ process
Wherein, described t is that PUSCH in the TDD-LTE system determined by the position of the frame structure of the second carrier wave and described subframe n+k sends interval.
As another embodiment, also comprise in the said equipment:
5th module: send the 2nd DCI on the subframe m of first carrier
6th module: send downlink data according to the scheduling of the 2nd DCI on the subframe m of the second carrier wave
7th module: receive the response/non-response (ACK/NACK) for described downlink data on the subframe m+4 of the 3rd carrier wave
Wherein, described m is integer, and the 3rd carrier wave is the FDD up-link carrier with first carrier pairing, and the 2nd DCI meets the descending scheduling DCI in FDD-LTE system.
The invention solves that FDD carrier wave is PCC and TDD carrier wave is the sequence problem across carrier dispatching in SCC scene, the sequential of FDD system is followed in the scheduling of PUSCH, and retransmit the sequential following TDD system, namely the DCI occurring TDD system on PCC is avoided, it also avoid the PUSCH that uplink synchronous HARQ causes and retransmit subframe and the afoul problem of descending sub frame, the present invention simultaneously at utmost maintains the compatibility with existing system.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent:
Fig. 1 shows the schematic diagram of uplink scheduling according to an embodiment of the invention;
Fig. 2 shows the schematic diagram performing descending PHICH transmission according to FDD sequential according to an embodiment of the invention;
Fig. 3 shows the schematic diagram performing descending PHICH transmission according to TDD sequential according to an embodiment of the invention;
Fig. 4 shows the schematic diagram of the PUSCH re-transmission that PHICH according to an embodiment of the invention triggers;
Fig. 5 shows the schematic diagram of the PUSCH re-transmission that DCI according to an embodiment of the invention triggers;
Fig. 6 shows the schematic diagram that Physical Downlink Shared Channel according to an embodiment of the invention (PDSCH-Physical Shared Channel) is dispatched;
Fig. 7 shows the structured flowchart for the processing unit in UE according to an embodiment of the invention;
Embodiment
Hereafter will be described in further detail technical scheme of the present invention by reference to the accompanying drawings, and it should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine arbitrarily mutually.
Embodiment 1
Embodiment 1 illustrates uplink scheduling sequential, as shown in Figure 1.In accompanying drawing 1, first carrier is FDD descending carrier-PCC, and the second carrier wave is TDD carrier wave-SCC, and the second carrier wave is configured to frame structure #0.Base station sends uplink scheduling DCI-form 0 or format 4 at the descending sub frame of first carrier, the 4th subframe then after described descending sub frame receives on a second carrier the upstream data dispatched according to described uplink scheduling DCI.UE receives uplink scheduling DCI-form 0 or format 4 at the descending sub frame of first carrier, and the scheduling on a second carrier according to described uplink scheduling DCI in the 4th subframe then after described descending sub frame sends upstream data.
Embodiment 2
Embodiment 2 illustrates and performs descending PHICH according to FDD sequential and send, as shown in Figure 2.In accompanying drawing 2, first carrier is FDD descending carrier-PCC, and the second carrier wave is TDD carrier wave-SCC, and the second carrier wave is configured to frame structure #5.Base station sends uplink scheduling DCI-form 0 or format 4 at the subframe #8 of first carrier, then the 4th subframe after described subframe #8 and subframe #2 receive the upstream data dispatched according to described uplink scheduling DCI on a second carrier, the 4th subframe then after described subframe #2 and subframe #6 send descending response/non-response on first carrier.UE first carrier subframe #8 receive uplink scheduling DCI-form 0 or format 4, then the 4th subframe after described subframe #8 and described subframe #2 send upstream data according to the scheduling of described uplink scheduling DCI on a second carrier, the 4th subframe then after described subframe #2 and subframe #6 receive descending response/non-response on first carrier.
Embodiment 3
Embodiment 3 illustrates and performs descending PHICH according to TDD sequential and send, as shown in Figure 3.In accompanying drawing 3, first carrier is FDD descending carrier-PCC, and the second carrier wave is TDD carrier wave-SCC, and the second carrier wave is configured to frame structure #6.Embodiment 3 is alternate embodiments for embodiment 2.
Base station sends uplink scheduling DCI-form 0 or format 4 at the descending sub frame n of first carrier, the 4th subframe then after described descending sub frame n and subframe n+4 receives the upstream data dispatched according to described uplink scheduling DCI on a second carrier, s subframe then after described subframe n+4 sends descending response/non-response on first carrier, s is determined by tdd frame structure and subframe index n, when n is respectively 0, and 3,4,8, when 9, s is respectively 6,4,7,4,6.UE receives uplink scheduling DCI-form 0 or format 4 at the descending sub frame n of first carrier, the 4th subframe then after described descending sub frame n and subframe n+4 sends upstream data according to the scheduling of described uplink scheduling DCI on a second carrier, s subframe then after described subframe n+4 receives descending response/non-response on first carrier, s is determined by tdd frame structure and subframe index n, when n is respectively 0, and 3,4,8, when 9, s is respectively 6,4,7,4,6.
Embodiment 4
Embodiment 4 illustrates the PUSCH re-transmission that PHICH triggers, as shown in Figure 4.In accompanying drawing 4, first carrier is FDD descending carrier-PCC, and the second carrier wave is TDD carrier wave-SCC, and the second carrier wave is configured to frame structure #3.
Base station sends uplink scheduling DCI-form 0 or format 4 at the descending sub frame #0 of first carrier, then the 4th subframe after described descending sub frame #0 and subframe #4 receive the upstream data dispatched according to described uplink scheduling DCI on a second carrier, then the subframe #4 being interposed between next frame between sending according to the PUSCH of TDD system receives up follow-up data again, and described up follow-up data and described upstream data belong to same HARQ process.Described up follow-up data is triggered by the PHICH for described upstream data, described PHICH determines according to the PHICH delay of feedback of FDD or determines according to the PHICH delay of feedback of TDD, the arrow being designated FDD in the former respective figure 4, is designated the arrow of TDD in the latter's respective figure 4.Dotted line represents that two arrows can only select one.
UE receives uplink scheduling DCI-form 0 or format 4 at the descending sub frame #0 of first carrier, then the 4th subframe after described descending sub frame #0 and subframe #4 send upstream data according to the scheduling of described uplink scheduling DCI on a second carrier, then the subframe #4 being interposed between next frame between sending according to the PUSCH of TDD system sends up follow-up data again, and described up follow-up data and described upstream data belong to same HARQ process.Described up follow-up data is triggered by the PHICH for described upstream data, described PHICH determines according to the PHICH delay of feedback of FDD or determines according to the PHICH delay of feedback of TDD, the arrow being designated FDD in the former respective figure 4, is designated the arrow of TDD in the latter's respective figure 4.
Embodiment 5
Embodiment 5 illustrates the PUSCH re-transmission that DCI triggers, as shown in Figure 5.In accompanying drawing 5, first carrier is FDD descending carrier-PCC, and the second carrier wave is TDD carrier wave-SCC, and the second carrier wave is configured to frame structure #3.Embodiment 5 is alternate embodiments for embodiment 4.
Base station sends the first uplink scheduling DCI-form 0 or format 4 at the descending sub frame #0 of first carrier, and the 4th subframe then after described descending sub frame #0 and subframe #4 receive the upstream data dispatched according to the first uplink scheduling DCI on a second carrier.Send the 3rd DCI at the subframe #0 of the second frame, the subframe #4 being interposed between next frame between then sending according to the PUSCH of TDD system receives the up follow-up data of the 3rd DCI scheduling again, and described up follow-up data and described upstream data belong to same HARQ process.With accompanying drawing 4, two arrows of the broken line representation in accompanying drawing 5 represent PHICH sequential and can only select one.
UE receives the first uplink scheduling DCI-form 0 or format 4 at the descending sub frame #0 of first carrier, and the 4th subframe then after described descending sub frame #0 and subframe #4 send the upstream data dispatched according to the first uplink scheduling DCI on a second carrier.Receive the 3rd DCI at the subframe #0 of the second frame, the subframe #4 being interposed between next frame between then sending according to the PUSCH of TDD system sends up follow-up data again, and described up follow-up data and described upstream data belong to same HARQ process.Described up follow-up data is dispatched by the 3rd DCI and is triggered.With accompanying drawing 4, two arrows of the broken line representation in accompanying drawing 5 represent PHICH sequential and can only select one.
Embodiment 6
Embodiment 6 illustrates PDSCH scheduling, as shown in Figure 6.In accompanying drawing 6, first carrier is FDD descending carrier-PCC, and the second carrier wave is TDD carrier wave-SCC, and the second carrier wave is configured to frame structure #2, and the 3rd carrier wave is FDD up-link carrier-PCC.
Base station sends descending scheduling DCI at the descending sub frame of first carrier, and the described descending sub frame of the second carrier wave sends downlink data, and the 4th subframe then after described descending sub frame receives response/non-response on the 3rd carrier wave.UE receives descending scheduling DCI at the descending sub frame of first carrier, and downlink data receiving on the described descending sub frame of the second carrier wave, the 4th subframe then after described descending sub frame sends response/non-response on the 3rd carrier wave.
Embodiment 7
Embodiment 7 is the structured flowcharts for the processing unit in UE, as shown in Figure 7.In accompanying drawing 7, UE processing unit 300 is by receiving system 301, and dispensing device 302, receiving system 303 is formed.Wherein receiving system 301 receives uplink scheduling DCI-form 0 or format 4 at the subframe n of FDD descending carrier, dispensing device 302 sends upstream data at the subframe n+4 of TDD carrier wave, receiving system 303 receives descending response/non-response at subframe n+4+s, and described s is one of following:
The delay of feedback of the PHICH in-FDD-LTE system
The delay of feedback of the PHICH in-TDD-LTE system.
The all or part of step that one of ordinary skill in the art will appreciate that in said method can be carried out instruction related hardware by program and complete, and described program can be stored in computer-readable recording medium, as read-only memory, and hard disk or CD etc.Optionally, all or part of step of above-described embodiment also can use one or more integrated circuit to realize.Accordingly, each modular unit in above-described embodiment, can adopt example, in hardware to realize, and also can be realized by the form of software function module, the application is not limited to the combination of the software and hardware of any particular form.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improves, all should be included within protection scope of the present invention.
Claims (14)
1. the method in subscriber equipment (UE), wherein, comprises the steps:
A. on the subframe n of first carrier, receive the first descending control instruction (DCI)
B. on the subframe n+k of the second carrier wave, upstream data is sent according to the scheduling of a DCI
Wherein, described n is integer, and described k is Physical Uplink Shared Channel (PUSCH) scheduler latency in Frequency Division Duplexing (FDD) Long Term Evolution (FDD-LTE) system, and first carrier is FDD descending carrier, second carrier wave is time division duplex (TDD) carrier wave, and a DCI is uplink scheduling DCI.
2. method according to claim 1, is characterized in that, also comprises the steps:
C. s subframe after the described subframe n+k of first carrier receives the response/non-response (ACK/NACK) for described upstream data
Wherein, described s is one of following:
The delay of feedback of the physical hybrid automatic repeat request indicator channel (PHICH) in-Frequency Division Duplexing (FDD) Long Term Evolution (FDD-LTE) system
The delay of feedback of the physical hybrid automatic repeat request indicator channel (PHICH) in-time division duplex Long Term Evolution (TDD-LTE) system.
3. method according to claim 2, is characterized in that, also comprises the steps:
D. t subframe after the described subframe n+k of the second carrier wave sends up follow-up data, and described up follow-up data and described upstream data belong to same hybrid automatic repeat-request (HARQ) process
Wherein, described t is that PUSCH in the TDD-LTE system determined by the position of the frame structure of the second carrier wave and described subframe n+k sends interval.
4. method according to claim 3, is characterized in that, also comprises the steps: before described step D
D0. receive the 3rd DCI, described 3rd DCI in u subframe before the transmission subframe of described up follow-up data and be used for the up follow-up data of execution cost
Wherein, described u is the PUSCH scheduler latency in FDD-LTE system.
5. method according to claim 1, is characterized in that, a DCI meets the uplink scheduling DCI in FDD-LTE system.
6. method according to claim 1, is characterized in that, also comprises the steps:
E. on the subframe m of first carrier, the 2nd DCI is received
F. on the subframe m of the second carrier wave according to the scheduled reception downlink data of the 2nd DCI
G. on the subframe m+4 of the 3rd carrier wave, send the response/non-response (ACK/NACK) for described downlink data
Wherein, described m is integer, and the 3rd carrier wave is the FDD up-link carrier with first carrier pairing, and the 2nd DCI meets the descending scheduling DCI in FDD-LTE system.
7. the method in system equipment, wherein, comprises the steps:
A. on the subframe n of first carrier, a DCI is sent
B. on the subframe n+k of the second carrier wave, the scheduling according to a DCI is received and the upstream data sent
Wherein, described n is integer, and described k is the PUSCH scheduler latency in FDD-LTE system, and first carrier is FDD descending carrier, and the second carrier wave is TDD carrier wave, and a DCI is uplink scheduling DCI.
8. method according to claim 7, is characterized in that, also comprises the steps:
C. s subframe after the described subframe n+k of first carrier sends the response/non-response (ACK/NACK) for described upstream data
Wherein, described s is one of following:
The delay of feedback of the PHICH in-FDD-LTE system
The delay of feedback of the PHICH in-TDD-LTE system.
9. method according to claim 8, is characterized in that, also comprises the steps:
D. t subframe after the described subframe n+k of the second carrier wave receives up follow-up data, and described up follow-up data and described upstream data belong to same HARQ process
Wherein, described t is that PUSCH in the TDD-LTE system determined by the position of the frame structure of the second carrier wave and described subframe n+k sends interval.
10. method according to claim 9, is characterized in that, also comprises the steps: before described step D
D0. send the 3rd DCI, described 3rd DCI in u subframe before the transmission subframe of described up follow-up data and be used for the up follow-up data of execution cost
Wherein, described u is the PUSCH scheduler latency in FDD-LTE system.
11. methods according to claim 7, is characterized in that, a DCI meets the uplink scheduling DCI in FDD-LTE system.
12. methods according to claim 7, is characterized in that, also comprise the steps:
E. on the subframe m of first carrier, the 2nd DCI is sent
F. on the subframe m of the second carrier wave, downlink data is sent according to the scheduling of the 2nd DCI
G. on the subframe m+4 of the 3rd carrier wave, receive the response/non-response (ACK/NACK) for described downlink data
Wherein, described m is integer, and the 3rd carrier wave is the FDD up-link carrier with first carrier pairing, and the 2nd DCI meets the descending scheduling DCI in FDD-LTE system.
13. 1 kinds of subscriber equipmenies (UE), it is characterized in that, this equipment comprises:
First module: receive a DCI on the subframe n of first carrier
Second module: send upstream data according to the scheduling of a DCI on the subframe n+k of the second carrier wave
Wherein, described n is integer, and described k is the PUSCH scheduler latency in FDD-LTE system, and first carrier is FDD descending carrier, and the second carrier wave is TDD carrier wave, and a DCI is uplink scheduling DCI.
3rd module: s subframe after the described subframe n+k of first carrier receives the response/non-response (ACK/NACK) for described upstream data
Wherein, described s is one of following:
The delay of feedback of the PHICH in-FDD-LTE system
The delay of feedback of the PHICH in-TDD-LTE system.
14. 1 kinds of system side equipment, is characterized in that, this equipment comprises:
First module: send the first descending control instruction (DCI) on the subframe n of first carrier
Second module: receive the scheduling according to a DCI and the upstream data sent on the subframe n+k of the second carrier wave
Wherein, described n is integer, and described k is the PUSCH scheduler latency in FDD-LTE system, and first carrier is FDD descending carrier, and the second carrier wave is TDD carrier wave, and a DCI is uplink scheduling DCI.
3rd module: s subframe after the described subframe n+k of first carrier sends the response/non-response (ACK/NACK) for described upstream data
Wherein, described s is one of following:
The delay of feedback of the PHICH in-FDD-LTE system
The delay of feedback of the PHICH in-TDD-LTE system.
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