CN104868978B - Base station and user terminal downlink subframe feedback method and device - Google Patents
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Abstract
The present invention provides a kind of base station and user terminal downlink subframe feedback method and device, it include: that downlink subframe Feedback Rule is determined according to the actual use situation of ascending-descending subframes and informs user terminal, the downlink subframe Feedback Rule includes UL-DL configuration and sub-frame offset；Communications reception is carried out according to the downlink subframe Feedback Rule.The present invention can guarantee all downlink subframes HARQ-ACK can Normal Feedback on the basis of, flexible choice carries the sub-frame of uplink of HARQ-ACK.The feedback method of the embodiment of the present invention maintains the backwards compatibility of FDD/TDD LTE system, can either each sub-frame of uplink of active balance HARQ-ACK feedback overhead, the scene that sub-frame of uplink caused by due to interference etc. can be suitble to can not work normally again, while may also help in the realization of the technologies such as carrier wave polymerization, dual link, D2D and use coexists.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of base stations and user terminal downlink subframe feedback method and dress
It sets.
Background technique
Current long term evolution (Long Term Evolution, LTE)/lte-a system includes time division duplex (Time
Division Duplexing, TDD), frequency division duplex (Frequency Division Duplexing, FDD) both of which, often
A downlink subframe determines corresponding sub-frame of uplink according to 3GPP TS36.213 specification to feed back hybrid automatic repeat-request response
(hybridautomatic repeatrequest acknowledgement, HARQ-ACK), wherein for FDD LTE/
Lte-a system provides that the HARQ-ACK of subframe n-4 is fed back by subframe n；And for TDD LTE/LTE-A system, corresponding specification by
Table 1 provides, it may be assumed that subframe n-km(km∈K:{k0,k1,…,kM-1) HARQ-ACK fed back by subframe n.
The downlink incidence set of table 1TDD system indexes
Since current LTE/LTE-A system can only select reference configuration, uplink from 7 kinds of UL-DL configuration that table 1 provides
The using flexible of frame is extremely limited, and is unable to the HARQ-ACK expense of each sub-frame of uplink of active balance, is easily led to Internet resources tune
With with downstream transmission conflict, a variety of enhancing technologies such as carrier wave polymerization, dual link, D2D etc. are coexisted with the support used also more
It is difficult.
Summary of the invention
(1) technical problems to be solved
The present invention provides a kind of base station and user terminal downlink subframe feedback method and device, to solve to make in the prior art
With limited flexibility, the technical issues of Internet resources allotment conflicts with downstream transmission is easily led to.
(2) technical solution
In order to solve the above technical problems, the embodiment of the present invention provides a kind of base station down subframe feedback method, comprising:
Downlink subframe Feedback Rule is determined according to the actual use situation of ascending-descending subframes and informs user terminal, under described
Row subframe Feedback Rule includes UL-DL configuration and sub-frame offset；
Communications reception is carried out according to the downlink subframe Feedback Rule.
Further, the actual use situation according to ascending-descending subframes determines that downlink subframe Feedback Rule includes:
Feedback subframe is overlapped not according to Internet Use, guarantees sending and receiving while carrying out for ascending-descending subframes.
Further, the downlink subframe Feedback Rule includes:
Determine that UL-DL configures f and sub-frame offset λ, subframe n-kmHybrid automatic repeat-request response fed back by subframe n,
Wherein { 0,1 ..., 6 } f ∈, λ ∈ { 0,1 ..., 9 }, km∈K:{k0,k1,…,kM-1, set K:{ k0,k1,…,kM-1According to row
The downlink incidence set concordance list that index is UL-DL configuration f, column index is subframe n- λ lookup tdd systems determines.
On the other hand, the present invention also provides a kind of user terminal downlink subframe feedback methods, comprising:
The downlink subframe Feedback Rule of base station transmission is received, the downlink subframe Feedback Rule includes UL-DL configuration and son
Frame shifting amount；
Feedback transmission is carried out according to the downlink subframe Feedback Rule.
Further, the downlink subframe Feedback Rule includes:
Determine that UL-DL configures f and sub-frame offset λ, subframe n-kmHybrid automatic repeat-request response fed back by subframe n,
Wherein { 0,1 ..., 6 } f ∈, λ ∈ { 0,1 ..., 9 }, km∈K:{k0,k1,…,kM-1, set K:{ k0,k1,…,kM-1According to row
The downlink incidence set concordance list that index is UL-DL configuration f, column index is subframe n- λ lookup tdd systems determines.
In another aspect, the present invention also provides a kind of base station down subframe feedback devices, comprising:
Rule determination unit determines downlink subframe Feedback Rule for the actual use situation according to ascending-descending subframes and accuses
Know that user terminal, the downlink subframe Feedback Rule include UL-DL configuration and sub-frame offset；
Receiving unit, for carrying out communications reception according to the downlink subframe Feedback Rule.
Further, the rule determination unit is also used to:
Feedback subframe is overlapped not according to Internet Use, guarantees sending and receiving while carrying out for ascending-descending subframes.
Further, the rule determination unit includes: for determining downlink subframe Feedback Rule
Determine that UL-DL configures f and sub-frame offset λ, subframe n-kmHybrid automatic repeat-request response fed back by subframe n,
Wherein { 0,1 ..., 6 } f ∈, λ ∈ { 0,1 ..., 9 }, km∈K:{k0,k1,…,kM-1, set K:{ k0,k1,…,kM-1According to row
The downlink incidence set concordance list that index is UL-DL configuration f, column index is subframe n- λ lookup tdd systems determines.
On the other hand, the present invention also provides a kind of user terminal downlink subframe feedback devices, comprising:
Regular receiving unit, for receiving the downlink subframe Feedback Rule of base station transmission, the downlink subframe Feedback Rule
Including UL-DL configuration and sub-frame offset；
Transmission unit, for carrying out feedback transmission according to the downlink subframe Feedback Rule.
Further, the regular receiving unit includes: for received downlink subframe Feedback Rule
Determine that UL-DL configures f and sub-frame offset λ, subframe n-kmHybrid automatic repeat-request response fed back by subframe n,
Wherein { 0,1 ..., 6 } f ∈, λ ∈ { 0,1 ..., 9 }, km∈K:{k0,k1,…,kM-1, set K:{ k0,k1,…,kM-1According to row
The downlink incidence set concordance list that index is UL-DL configuration f, column index is subframe n- λ lookup tdd systems determines.
(3) beneficial effect
As it can be seen that in a kind of base station provided by the invention and user terminal downlink subframe feedback method and device, Neng Gou
Guarantee that the HARQ-ACK of all downlink subframes can be on the basis of Normal Feedback, flexible choice carries uplink of HARQ-ACK
Frame.The feedback method of the embodiment of the present invention maintains the backwards compatibility of FDD/TDD LTE system, can either active balance it is each on
The HARQ-ACK feedback overhead of row subframe, and sub-frame of uplink caused by due to interference etc. can be suitble to can not work normally
Scene, while may also help in the realization of the technologies such as carrier wave polymerization, dual link, D2D and use coexists.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the flow diagram of base station down subframe feedback method of the embodiment of the present invention；
Fig. 2 is the flow diagram of user terminal downlink subframe feedback method of the embodiment of the present invention；
Fig. 3 is the flow diagram of 1 base station down subframe feedback method of the embodiment of the present invention；
Fig. 4 is the feedback configuration schematic diagram of 1 base station down subframe feedback method of the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of base station down subframe feedback device of the embodiment of the present invention；
Fig. 6 is the structural schematic diagram of user terminal downlink subframe feedback device of the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
In order to effectively meet the needs of the technologies such as flexible carrier wave polymerization, current TDD LTE/LTE-A system allow using
It is anti-as downlink HARQ-ACK that different UL-DL configurations is configured with actual uplink (uplink, UL)-downlink (downlink, DL)
The reference configuration of feedback, and corresponding sub-frame of uplink is determined for each downlink subframe to feed back HARQ-ACK based on the reference configuration.
Therefore, the embodiment of the present invention provides a kind of base station down subframe feedback method first, referring to Fig. 1, comprising:
Step 101: downlink subframe Feedback Rule being determined according to the actual use situation of ascending-descending subframes and informs user's end
End, the downlink subframe Feedback Rule include UL-DL configuration and sub-frame offset.
Step 102: communications reception is carried out according to the downlink subframe Feedback Rule.
The embodiment of the present invention also provides a kind of user terminal downlink subframe feedback method, referring to fig. 2, comprising:
Step 201: receiving the downlink subframe Feedback Rule of base station transmission, the downlink subframe Feedback Rule includes UL-DL
Configuration and sub-frame offset.
Step 202: feedback transmission is carried out according to the downlink subframe Feedback Rule.
As it can be seen that in a kind of base station provided in an embodiment of the present invention and user terminal downlink subframe feedback method, Neng Gou
Guarantee that the HARQ-ACK of all downlink subframes can be on the basis of Normal Feedback, flexible choice carries uplink of HARQ-ACK
Frame.The feedback method of the embodiment of the present invention maintains the backwards compatibility of FDD/TDD LTE system, can either active balance it is each on
The HARQ-ACK feedback overhead of row subframe, and sub-frame of uplink caused by due to interference etc. can be suitble to can not work normally
Scene, while may also help in the realization of the technologies such as carrier wave polymerization, dual link, D2D and use coexists.
Preferably, base station determines that downlink subframe Feedback Rule may include: according to the actual use situation of ascending-descending subframes
Feedback subframe is overlapped not according to Internet Use, guarantees sending and receiving while carrying out for ascending-descending subframes.Under determination
When row subframe Feedback Rule, need to guarantee that downlink subframe is fed back on different sub frames as far as possible, so as to be staggered, information is transmitted,
So that the process sent and received does not conflict.
Preferably, downlink subframe Feedback Rule may include: determining UL-DL configuration f and sub-frame offset λ, subframe n-km's
Hybrid automatic repeat-request response is fed back by subframe n, wherein { 0,1 ..., 6 } f ∈, λ ∈ { 0,1 ..., 9 }, km∈K:{k0,
k1,…,kM-1, set K:{ k0,k1,…,kM-1It is UL-DL configuration f, column index according to line index is that subframe n- λ searches the time-division
The downlink incidence set concordance list 1 of duplex system determines.
Embodiment 1:
The embodiment of the present invention 1 provides the downlink subframe feedback method under a kind of TDD-LTE system, to explain in detail the present invention
One specific implementation process of embodiment, referring to Fig. 3:
Step 301: downlink subframe Feedback Rule is determined according to the actual use situation of ascending-descending subframes.
In this step, it is necessary first to selected according to the actual use situation of ascending-descending subframes suitable UL-DL configuration and
Sub-frame offset.Referring to fig. 4, the TDD-LTE system of the present embodiment 1 is enabled to actually use UL-DL configuration #1, and respectively for difference
UE specifies different sub-frame offset λ, wherein the reference configuration for being UE1 instruction is { UL-DL configures #2, sub-frame offset λ=0 }, is
The reference configuration of UE2 instruction is { UL-DL configures #2, sub-frame offset λ=1 }.
According to downlink subframe Feedback Rule, the DL-HARQ feedback of reference table 1, UE1 and UE2 is as shown in Figure 3.
Step 302: communications reception is carried out according to downlink subframe Feedback Rule.
So far, then the overall process of 1 downlink subframe feedback method of the embodiment of the present invention is completed.
The embodiment of the present invention also provides a kind of base station down subframe feedback device, sees Fig. 5, comprising:
Rule determination unit 501, for determining downlink subframe Feedback Rule according to the actual use situation of ascending-descending subframes
And inform user terminal, the downlink subframe Feedback Rule includes UL-DL configuration and sub-frame offset；
Receiving unit 502, for carrying out communications reception according to the downlink subframe Feedback Rule.
Preferably, rule determination unit 501 can be also used for: being overlapped feedback subframe not according to Internet Use, protects
Card ascending-descending subframes sending and receiving while carrying out.
Preferably, rule determination unit 501 may include: that determining UL-DL matches for determining downlink subframe Feedback Rule
Set f and sub-frame offset λ, subframe n-kmHybrid automatic repeat-request response fed back by subframe n, wherein { 0,1 ..., 6 } f ∈, λ
∈ { 0,1 ..., 9 }, km∈K:{k0,k1,…,kM-1, set K:{ k0,k1,…,kM-1According to line index be UL-DL configure f, column
Index is that the downlink incidence set concordance list of subframe n- λ lookup tdd systems determines.
The embodiment of the present invention also provides a kind of user terminal downlink subframe feedback device, sees Fig. 6, comprising:
Regular receiving unit 601, for receiving the downlink subframe Feedback Rule of base station transmission, the downlink subframe feedback rule
It then include UL-DL configuration and sub-frame offset；
Transmission unit 602, for carrying out feedback transmission according to the downlink subframe Feedback Rule.
Preferably, regular receiving unit 601 may include: that determining UL-DL matches for received downlink subframe Feedback Rule
Set f and sub-frame offset λ, subframe n-kmHybrid automatic repeat-request response fed back by subframe n, wherein { 0,1 ..., 6 } f ∈, λ
∈ { 0,1 ..., 9 }, km∈K:{k0,k1,…,kM-1, set K:{ k0,k1,…,kM-1According to line index be UL-DL configure f, column
Index is that the downlink incidence set concordance list of subframe n- λ lookup tdd systems determines.
The method and apparatus of the embodiment of the present invention are suitable for TDD and FDD system simultaneously.
As it can be seen that the embodiment of the present invention has the following beneficial effects:
In a kind of base station provided in an embodiment of the present invention and user terminal downlink subframe feedback method and device, Neng Gou
Guarantee that the HARQ-ACK of all downlink subframes can be on the basis of Normal Feedback, flexible choice carries uplink of HARQ-ACK
Frame.The feedback method of the embodiment of the present invention maintains the backwards compatibility of FDD/TDD LTE system, can either active balance it is each on
The HARQ-ACK feedback overhead of row subframe, and sub-frame of uplink caused by due to interference etc. can be suitble to can not work normally
Scene, while may also help in the realization of the technologies such as carrier wave polymerization, dual link, D2D and use coexists.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of base station down subframe feedback method characterized by comprising
Downlink subframe Feedback Rule is determined according to the actual use situation of ascending-descending subframes and informs user terminal, downlink
Frame Feedback Rule includes UL-DL configuration and sub-frame offset, wherein the sub-frame offset makes described in downlink subframe and carrying
The feedback subframe of the hybrid automatic repeat-request response HARQ-ACK of downlink subframe generates simultaneous bias；
Communications reception is carried out according to the downlink subframe Feedback Rule.
2. base station down subframe feedback method according to claim 1, which is characterized in that described according to ascending-descending subframes
Actual use situation determines that downlink subframe Feedback Rule includes:
Feedback subframe is overlapped not according to Internet Use, guarantees sending and receiving while carrying out for ascending-descending subframes.
3. base station down subframe feedback method according to claim 1 or 2, which is characterized in that the downlink subframe feedback
Rule includes:
Determine that UL-DL configures f and sub-frame offset λ, subframe n-kmHybrid automatic repeat-request response fed back by subframe n, wherein f
∈ { 0,1 ..., 6 }, λ ∈ { 0,1 ..., 9 }, km∈K:{k0,k1,…,kM-1, set K:{ k0,k1,…,kM-1According to line index
F is configured for UL-DL, the downlink incidence set concordance list that column index is subframe n- λ lookup tdd systems determines.
4. a kind of user terminal downlink subframe feedback method characterized by comprising
The downlink subframe Feedback Rule of base station transmission is received, the downlink subframe Feedback Rule includes that UL-DL configuration and subframe are inclined
Shifting amount, wherein the sub-frame offset makes the hybrid automatic repeat-request response of downlink subframe and the carrying downlink subframe
The feedback subframe of HARQ-ACK generates simultaneous bias；
Feedback transmission is carried out according to the downlink subframe Feedback Rule.
5. user terminal downlink subframe feedback method according to claim 4, which is characterized in that the downlink subframe feedback
Rule includes:
Determine that UL-DL configures f and sub-frame offset λ, subframe n-kmHybrid automatic repeat-request response fed back by subframe n, wherein f
∈ { 0,1 ..., 6 }, λ ∈ { 0,1 ..., 9 }, km∈K:{k0,k1,…,kM-1, set K:{ k0,k1,…,kM-1According to line index
F is configured for UL-DL, the downlink incidence set concordance list that column index is subframe n- λ lookup tdd systems determines.
6. a kind of base station down subframe feedback device characterized by comprising
Rule determination unit determines downlink subframe Feedback Rule for the actual use situation according to ascending-descending subframes and informs use
Family terminal, the downlink subframe Feedback Rule includes UL-DL configuration and sub-frame offset, wherein the sub-frame offset makes downlink
The feedback subframe of the hybrid automatic repeat-request response HARQ-ACK of subframe and the carrying downlink subframe generates simultaneous bias；
Receiving unit, for carrying out communications reception according to the downlink subframe Feedback Rule.
7. base station down subframe feedback device according to claim 6, which is characterized in that the rule determination unit is also used
In:
Feedback subframe is overlapped not according to Internet Use, guarantees sending and receiving while carrying out for ascending-descending subframes.
8. base station down subframe feedback device according to claim 6 or 7, which is characterized in that the rule determination unit
Include: for determining downlink subframe Feedback Rule
Determine that UL-DL configures f and sub-frame offset λ, subframe n-kmHybrid automatic repeat-request response fed back by subframe n, wherein f
∈ { 0,1 ..., 6 }, λ ∈ { 0,1 ..., 9 }, km∈K:{k0,k1,…,kM-1, set K:{ k0,k1,…,kM-1According to line index
F is configured for UL-DL, the downlink incidence set concordance list that column index is subframe n- λ lookup tdd systems determines.
9. a kind of user terminal downlink subframe feedback device characterized by comprising
Regular receiving unit, for receiving the downlink subframe Feedback Rule of base station transmission, the downlink subframe Feedback Rule includes
UL-DL configuration and sub-frame offset, wherein the sub-frame offset makes the mixing of downlink subframe and the carrying downlink subframe
The feedback subframe of automatic repeat request response HARQ-ACK generates simultaneous bias；
Transmission unit, for carrying out feedback transmission according to the downlink subframe Feedback Rule.
10. user terminal downlink subframe feedback device according to claim 9, which is characterized in that the rule receives single
Member is used for received downlink subframe Feedback Rule
Determine that UL-DL configures f and sub-frame offset λ, subframe n-kmHybrid automatic repeat-request response fed back by subframe n, wherein f
∈ { 0,1 ..., 6 }, λ ∈ { 0,1 ..., 9 }, km∈K:{k0,k1,…,kM-1, set K:{ k0,k1,…,kM-1According to line index
F is configured for UL-DL, the downlink incidence set concordance list that column index is subframe n- λ lookup tdd systems determines.
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| CN107046454B (en) * | 2016-02-05 | 2020-06-12 | 上海诺基亚贝尔股份有限公司 | Method and apparatus for receiving acknowledgement in a time division duplex based wireless communication network |
| US10349442B2 (en) * | 2016-08-12 | 2019-07-09 | Qualcomm Incorporated | Cross-carrier scheduling for V2X communication |
| CN106411482A (en) * | 2016-12-08 | 2017-02-15 | 珠海市魅族科技有限公司 | Downlink HARQ feedback method and device under TDD system |
| CN110768767B (en) * | 2018-07-27 | 2021-04-09 | 华为技术有限公司 | Method and device for allocating uplink and downlink time resources |
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