CN105657834A - Methods for configuring uplink sub-frame and downlink sub-frame - Google Patents
Methods for configuring uplink sub-frame and downlink sub-frame Download PDFInfo
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- CN105657834A CN105657834A CN201410640582.XA CN201410640582A CN105657834A CN 105657834 A CN105657834 A CN 105657834A CN 201410640582 A CN201410640582 A CN 201410640582A CN 105657834 A CN105657834 A CN 105657834A
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Abstract
The invention provides methods for configuring an uplink sub-frame and a downlink sub-frame. According to one embodiment of the invention, a method for configuring the downlink sub-frame is provided; and the method comprises the following steps of: configuring a downlink domain and an uplink domain in the downlink sub-frame, wherein the uplink domain is positioned at the tail end of the downlink sub-frame; and configuring a guard interval between the downlink domain and the uplink domain. According to the other embodiment of the invention, a method for configuring the uplink sub-frame is provided; and the method comprises the following steps of: configuring a downlink domain and an uplink domain in the uplink sub-frame, wherein the downlink domain is positioned at the starting end of the uplink sub-frame; and configuring a guard interval between the downlink domain and the uplink domain.
Description
Technical field
The present invention relates to the communication technology, particularly relate to a kind of for the method for collocating uplink subframe and descending sub frame.
Background technology
5G physical layer is devoted to provide cost and the watt consumption [1] of high performance data rate and reduction. As described in document [2], the main technology that a large amount of MIMO of community, high frequency band and intensive layout will be the high performance requirements meeting 5G. In addition, the optimization of the system expandability, the handiness keeping uplink and downlink ability and non-paired frequency spectrum uses for 5G concept is also extremely important. In addition, except traditional UE-eNB accesses, more and more various links newly start to occur, such as between eNB communication from the link of backhaul link and the device-to-device without the need to Infrastructure.
Based on this kind of requirement of 5G, it is contemplated that can utilizing vast non-paired frequency spectrum to the high efficiency of low cost of tdd mode and its, tdd mode has main advantages for the 5G scheme in future. The use of tdd mode also allows to utilize the channel reciprocity between uplink and downlink, to reduce feedback spending. This is also favourable for needing the MIMO technology of a large amount of channel condition information.
But, in the current LTE/LTE-Advanced system of Release8 to Release12, although support fdd mode and tdd mode simultaneously, but fdd mode is main dual-mode compared to tdd mode. Tdd mode is coordinated towards fdd mode greatly, and the special degree in the optimization of TDD is minimized. Specifically, the design of subframe structure is optimized for FDD, but not TDD. When use traditional for the subframe structure of the optimization of FDD time, in tdd mode, the time span of any handshake operation (the round time (RRT) of such as primary data scheduling, HARQ procedure) between UE and eNB will extend, and depend on very much row/descending ratio. Therefore, this can not realize the RRT of following 5G technology is the requirement of 1ms.
Summary of the invention
In view of the above problems, in the present invention, by proposing the frame structure design of a kind of applicable optimization being used for TDD, to ensure the requirement of 5G.
According to the first aspect of the invention, it is proposed that a kind of method for configurating downlink subframe, comprising: configurating downlink territory and upper row territory in described descending sub frame, wherein said upper row territory is positioned at the end of described descending sub frame;And described descending territory and described between row territory configuration one protection interval.
Preferably, described upper row territory comprises upload control territory.
Preferably, described upper row territory comprises row data territory and upload control territory.
Preferably, described upload control territory comprises ascending control information and/or detection reference signal.
Preferably, by the content of network or the high-rise pre-configured described upper row territory of signaling.
Preferably, when the subsequent subframe of described sub-frame of uplink is sub-frame of uplink, remove described upper row territory.
Preferably, described descending territory comprises descending control domain and downlink data territory.
According to the second aspect of the invention, it is proposed that a kind of method for collocating uplink subframe, comprising: configurating downlink territory and upper row territory in described sub-frame of uplink, wherein said descending territory is positioned at the beginning of described sub-frame of uplink; And described descending territory and described between row territory configuration one protection interval.
Preferably, described descending territory comprises descending control domain.
Preferably, described descending territory comprises downlink data territory and descending control domain.
Preferably, described descending control domain comprise following at least one item: the ACK/NACK of Downlink Control Information, the uplink scheduling information for described sub-frame of uplink, the HARQ for previous downlink transfer, downlink reference signal, synchronizing signal and system information.
Preferably, described descending territory comprises downlink data territory.
Preferably, described upper row territory comprises row data territory and upload control territory, and configures described upload control territory at the edge of bandwidth, row data territory on the rest part configuration of bandwidth is described.
In the present invention, for uplink and downlink propose the frame structure of the optimization for TDD respectively. No matter being descending or uplink, each subframe comprises the upper row territory in descending territory and then descending territory. Inner in each subframe, by down conversion extremely descending period, only insert protection interval (guardperiod, GP), to compensate the transport delay of the downlink transfer to different user equipmenies (userequipment, UE). Owing to can be postponed by the uplink that the preposition process of the time in LTE/LTE-Advanced system compensates to different UE, therefore during going upward to down conversion, it is not necessary to insertion GP. Thus, no matter the distributing style of upper row/descending, does not need insertion GP during continuous subframes. Therefore, the solution of the present invention cost is lower, and meets the requirement of 5G system.
The all respects of the present invention are more clear by the explanation by specific embodiment hereinafter.
Accompanying drawing explanation
By reading with reference to detailed description non-limiting example done that the following drawings is done, the other features, objects and advantages of the present invention will become more apparent:
Fig. 1 shows the structural representation of descending sub frame according to an embodiment of the invention; And
Fig. 2 shows the structural representation of sub-frame of uplink in accordance with another embodiment of the present invention.
In the drawings, running through different diagrams, same or similar Reference numeral represents identical or corresponding parts or feature.
Embodiment
Fig. 1 shows the structural representation of descending sub frame according to an embodiment of the invention. As shown in Figure 1, in descending sub frame, configurating downlink territory and upper row territory, wherein go up the end that row territory is positioned at descending sub frame. Further, between descending territory and upper row territory, configure a protection interval.
At this, upper row territory is positioned at the end of descending sub frame. It is embedded in descending sub frame by upper row territory can to reduce the time of the handshake procedure between UE and eNB.This handshake procedure can be such as transfer, HARQ procedure and the Stochastic accessing etc. that UE initiates. In addition, the quantity of the conversion in each descending sub frame can be reduced to 1 time by the edge that upper row territory is placed on descending sub frame, and this will save the watt consumption of half.
According to one embodiment of present invention, upper row territory only comprises upload control territory.
Alternatively, upper row territory can also be upper row data territory or comprise row data territory and the hybrid domain in upload control territory.
On this, detection reference signal (soundingreferencesignal, SRS) such as can be carried in row territory, for the channel reciprocity in tdd mode, and/or ascending control information.
In addition, only inserting a GP on coming downwards in the switching process of row, it is for compensating the transport delay of the downlink transfer to different UE.
GP during going upward to down conversion is unnecessary, because can being compensated by the time preposition process being similar in current LTE/LTE-A system from the transport delay of the uplink of different UE.
Thus, by decreasing the quantity of GP according to the configuration of the present invention, thus resource consumption is decreased.
In addition, the upper row territory of the embedding in descending sub frame is configurable.
Such as, it is possible to pre-define by network or by high-rise signaling semi-static realize the configuration to the content in upper row territory.
Further, this configuration can depend on the type of subsequent subframe. If such as subsequent subframe is sub-frame of uplink, then the upper row territory embedded can remove, because UCI can be transmitted by follow-up sub-frame of uplink. Thus, in the descending sub frame not having row territory in embedding, more resource can be allocated for downlink transfer.
Fig. 2 shows the structural representation of sub-frame of uplink in accordance with another embodiment of the present invention. As shown in Figure 2, configurating downlink territory and upper row territory in sub-frame of uplink, wherein descending territory is positioned at the beginning of sub-frame of uplink. Further, between descending territory and upper row territory, configure a protection interval.
At this, descending territory is positioned at the beginning of sub-frame of uplink. The time of the handshake procedure between UE and eNB can be reduced by being embedded in sub-frame of uplink by descending territory. In addition, UE have received uplink scheduling and transmit ascending data in identical subframe, thus decreases delay.
According to one embodiment of present invention, descending territory only comprises descending control domain.
Alternatively, descending territory can also be downlink data territory or comprise downlink data territory and the hybrid domain of descending control domain.
It is one or more that this descending control domain such as can carry in following information: for the uplink scheduling of current sub-frame of uplink, the HARQ-ACK/NACK for previous downlink transfer, the downlink reference signal for channel measurement, synchronizing signal, system information and/or Downlink Control Information.
Further, only inserting a GP on coming downwards in the switching process of row, it is for compensating the transport delay of the downlink transfer to different UE.
In one embodiment of the invention, upload control territory is positioned at the edge of bandwidth, such as, in fig. 2 for being depicted as the top and bottom. Upper row data territory is positioned at other parts of bandwidth. The frequency resource distributed by this way time gap edge time frequency hopping. The resource distributing upload control territory at the edge of bandwidth by combining with frequency hopping can provide maximized frequency diversity for such as control signal. Consequently, it is possible to avoid frequency selective fading, enhance the robustness of communication.
At this, the resources allocation in upload control territory to the edge of bandwidth can not be affected uplink spectrum.Therefore, this can be embodied as single UE and distribute very wide transmission frequency spectrum, and is therefore retained to low peak-to-average power ratio (PAPR) characteristic of UE transmission.
Wish that there is very wide frequency spectrum owing to being operated in the following system of high band, therefore upload control territory is distributed over the whole width and can retain abundant frequency resource for upstream control signaling. In the present invention, position in the time domain, upload control territory is specified according to the upstream control signaling expense of reality and assigned frequency resource is very flexibly such that it is able to saved frequency resource.
Therefore, the present invention considers the demand of 5G completely, such as low delay, low power consumption, flexibly extendability, and supports the various communication links except traditional UE-eNB.
It should be noted that, above-described embodiment is only exemplary, but not limitation of the present invention. Any technical scheme not deviating from spirit of the present invention all should fall within protection scope of the present invention, and this comprises the different technologies feature using and occurring in different embodiments, and installation method can combine, to obtain useful effect. In addition, it should not any Reference numeral in claim is considered as the claim involved by limiting; " comprise " word not get rid of other claims or specification sheets are exempted from the device listed or step.
Claims (14)
1., for a method for configurating downlink subframe, comprising:
Configurating downlink territory and upper row territory in described descending sub frame, wherein said upper row territory is positioned at the end of described descending sub frame; And
Described descending territory and described between row territory configuration one protection interval.
2. method according to claim 1, it is characterised in that, described upper row territory comprises upload control territory.
3. method according to claim 1, it is characterised in that, described upper row territory comprises row data territory and upload control territory.
4. require the method described in 2 or 3 according to power, it is characterised in that, described upload control territory comprises ascending control information and/or detection reference signal.
5. method according to claim 1, it is characterised in that, described upper row territory comprises row data territory.
6. method according to claim 1, it is characterised in that, by the content of network or the high-rise pre-configured described upper row territory of signaling.
7. method according to claim 1, it is characterised in that, when the subsequent subframe of described sub-frame of uplink is sub-frame of uplink, remove described upper row territory.
8. method according to claim 1, it is characterised in that, described descending territory comprises descending control domain and downlink data territory.
9., for a method for collocating uplink subframe, comprising:
Configurating downlink territory and upper row territory in described sub-frame of uplink, wherein said descending territory is positioned at the beginning of described sub-frame of uplink; And
Described descending territory and described between row territory configuration one protection interval.
10. method according to claim 9, it is characterised in that, described descending territory comprises descending control domain.
11. methods according to claim 9, it is characterised in that, described descending territory comprises downlink data territory and descending control domain.
12. require the method described in 10 or 11 according to power, it is characterized in that, described descending control domain comprise following at least one item: the ACK/NACK of Downlink Control Information, the uplink scheduling information for described sub-frame of uplink, the HARQ for previous downlink transfer, downlink reference signal, synchronizing signal and system information.
13. require the method described in 9 according to power, it is characterised in that, described descending territory comprises downlink data territory.
14. methods according to claim 9, it is characterised in that, described upper row territory comprises row data territory and upload control territory, and configures described upload control territory at the edge of bandwidth, row data territory on the rest part configuration of bandwidth is described.
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| CN201410640582.XA CN105657834B (en) | 2014-11-13 | 2014-11-13 | Method for configuring uplink subframe and downlink subframe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018027809A1 (en) * | 2016-08-11 | 2018-02-15 | 富士通株式会社 | Resource scheduling method, apparatus and communication system |
| WO2018027807A1 (en) * | 2016-08-11 | 2018-02-15 | 富士通株式会社 | Resource scheduling method, apparatus and communication system |
| CN109565812A (en) * | 2016-08-09 | 2019-04-02 | 三菱电机株式会社 | Communication system |
-
2014
- 2014-11-13 CN CN201410640582.XA patent/CN105657834B/en active Active
Non-Patent Citations (3)
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| CATT: "Begin and End of measurement GAPs", 《3GPP TSG-RAN WG4 MEETING #67 R4-132628》 * |
| MEDIATEK INC.: "Working Assumption for Aperiodic CSI Reporting in Subframe Subsets", 《3GPP TSG-RAN WG1 #63BIS R1-110141》 * |
| SAMSUNG: "Uplink time domain hopping for E-UTRA TDD", 《3GPP TSG RAN WG1 MEETING #50BIS R1-074100》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109565812A (en) * | 2016-08-09 | 2019-04-02 | 三菱电机株式会社 | Communication system |
| CN109565812B (en) * | 2016-08-09 | 2024-01-19 | 三菱电机株式会社 | Communication system |
| WO2018027809A1 (en) * | 2016-08-11 | 2018-02-15 | 富士通株式会社 | Resource scheduling method, apparatus and communication system |
| WO2018027807A1 (en) * | 2016-08-11 | 2018-02-15 | 富士通株式会社 | Resource scheduling method, apparatus and communication system |
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| CN105657834B (en) | 2020-03-20 |
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