CN108886793A

CN108886793A - A kind of ascending transmission method, base station and UE

Info

Publication number: CN108886793A
Application number: CN201680083819.6A
Authority: CN
Inventors: 杨美英; 官磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-03-31
Filing date: 2016-03-31
Publication date: 2018-11-23
Also published as: WO2017166208A1

Abstract

The present invention provides a kind of ascending transmission method, base station and UE, it is related to the communications field, indicate UE in the scene that subframe #n+4 sends filling signal in subframe #n at least to solve base station, the problem of UL grant loss of subframe #n impacts the uplink of subframe #n+5, or since under subframe #n+4 does not have PUSCH transmission and subframe #n is made not send UL grant scene, subframe #n does not send the problem of UL grant impacts the uplink of subframe #n+5.Including：Base station sends the first downlink transfer information to UE in the first subframe, and the first downlink transfer information, which is used to indicate UE and sends the first upstream data in the second subframe and be used to indicate UE, sends uplink detection signal in third subframe.Second subframe and third subframe are later than the first subframe in time, and the second subframe and third subframe are that continuous and the second subframe is later than third subframe in time.

Description

A kind of ascending transmission method, base station and UE

Technical field

The present invention relates to the communications field more particularly to a kind of ascending transmission methods, base station and UE.

Background technique

LAA UL (Licensed-Assisted Access Uplink, authorize frequency spectrum auxiliary access up direction) send in, including SRS (Sounding reference signal, detection reference signal) it sends, PUSCH (Physical uplink sharing channel, Physical Uplink Shared Channel) send and UL related data, UL signaling, the transmission of UL signal etc..Wherein, SRS is used for UL channel detection, and UE usually sends SRS in the last one OFDM (Orthogonal frequency division Multiplexing, orthogonal frequency division multiplexing) symbol of uplink subframe.In addition, sending multiple UE (User Equipment, user equipment) of SRS in the subframe, the running time-frequency resource, i.e. the last one OFDM symbol of the subframe are multiplexed by way of frequency division and code point.If certain UE for not needing transmission SRS, need to send PUSCH in next subframe of the subframe, then need to carry out LBT (Listen before talk, first listen and send out afterwards) on the symbol.In this way, the UE for sending SRS will interfere the UE for carrying out LBT, it is busy for causing the UE for carrying out LBT to listen to channel, to not can be carried out the transmission of UL data in next subframe.

In order to avoid the above problem, according to the consensus standard of existing LTE/LTE-A, it can enable the UE for not sending SRS on the time-frequency location that other UE send SRS, send a filling signal (such as padding SRS), to avoid the UE interference caused by the UE for not sending SRS for sending SRS.Specifically, base station indicates that UE sends filling signal on subframe #n+4 in the UL grant of subframe #n.Since the transmission of SRS is always in first symbol of the last one OFDM symbol of subframe or next subframe, the transmission of filling signal is also in the last one OFDM symbol of subframe or first symbol of next subframe.

When the UL grant of subframe #n loses, the UE for not needing transmission SRS not can determine that whether need to transmit filling signal in #n+4 then.Alternatively, then no need to send UL grant by subframe #n, without transmitting the UE of SRS when subframe #n+4 does not have PUSCH transmission It can not determine whether #n+4 needs to transmit filling signal.If the UE needs to carry out transmitting uplink data in subframe #n+5, UE does not transmit filling signal in subframe #n+4, then LBT can be in the last symbol of subframe #n+4, and then LBT can transmit SRS by other UE and interfere, UE listen to channel be it is busy, cause UE not can be carried out the transmission of normal UL data in subframe #n+5.

Summary of the invention

The embodiment of the present invention provides a kind of ascending transmission method, base station and UE, indicate UE in the scene that subframe #n+4 sends filling signal at least to solve base station in subframe #n, the problem of UL grant loss of subframe #n impacts the uplink of subframe #n+5, or since under subframe #n+4 does not have PUSCH transmission and subframe #n is made not send UL grant scene, subframe #n does not send the problem of UL grant impacts the uplink of subframe #n+5.

In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that

In a first aspect, disclosing a kind of ascending transmission method, comprising:

Base station sends the first downlink transfer information to user equipment (UE) in the first subframe, and the first downlink transfer information, which is used to indicate the UE and sends the first upstream data in the second subframe and be used to indicate the UE, sends uplink detection signal in third subframe.Here second subframe and the third subframe is later than first subframe in time, and second subframe and the third subframe are that continuous and described second subframe is later than the third subframe in time.Second subframe and the third subframe are that continuously i.e. described second subframe and the third subframe are two subframes adjacent in timing in time.

According to the sequential relationship of the first subframe, the second subframe and third subframe, for example, the first subframe can be the (n+1)th subframe, and the second subframe can be the n-th+5 subframe, and third subframe can be the n-th+4 subframe.It is, base station indicates that UE sends uplink detection signal in the n-th+4 subframe by the UL grant of the (n+1)th subframe, and indicate UE in the n-th+5 sub-frame transmission upstream data.

In the prior art, base station indicates that UE sends filling signal in the last symbol of subframe #n+4 in the UL grant of subframe #n.When the UL grant of subframe #n loses, the UE for not needing transmission SRS not can determine that whether need to transmit filling signal in #n+4 then.If should UE needs to carry out transmitting uplink data in subframe #n+5, UE does not transmit filling signal in subframe #n+4, then LBT can be in the last symbol of subframe #n+4, and then LBT can transmit SRS by other UE and interfere, UE listen to channel be it is busy, cause UE not can be carried out the transmission of normal UL data in subframe #n+5.

Method provided by the invention, instruction UE of the base station in the UL grant of the first subframe of downlink (subframe #n+1) transmits upstream data at the second subframe (#n+5) and needs to send uplink detection signal in third subframe (subframe #n+4), to when the UL grant of subframe #n loses, UE can still be determined whether subframe #n+4 sends uplink detection signal, it avoids UE and carries out LBT when other UE transmit SRS, and then avoid SRS block (i.e. UE transmission SRS interferes the LBT of other UE) and the uplink of UE is impacted.

Optionally, the method also includes:

The base station sends the second downlink transfer information to the UE in the 5th subframe, and the second downlink transfer information is used to indicate the UE and sends the second upstream data and the uplink detection signal in the third subframe.Alternatively, the second downlink transfer information is only used for indicating that the UE sends the uplink detection signal in the third subframe and do not indicate that UE sends second upstream data in the third subframe.

Here the third subframe is later than the 5th subframe in time；First subframe and the 5th subframe are that continuous and described first subframe is later than the 5th subframe in time in time.Wherein, with reference to above-mentioned example, if the first subframe is N+1 subframe, the 5th subframe can be N subframe.

That is, base station can also be in the n-th subframe instruction UE in the n-th+4 sub-frame transmission upstream data and uplink detection signal, or only indicate that UE sends uplink detection signal in the n-th+4 subframe.

Method provided by the invention, base station is in addition to that can indicate that UE other than third subframe (subframe #n+4) sends uplink detection signal, can also indicate that UE sends uplink detection signal in third subframe in the previous subframe (i.e. the 5th subframe --- subframe #n) of the first subframe in the first subframe (subframe #n+1).

Optionally, the method also includes:

The base station is the resource information that UE configuration sends the uplink detection signal in the third subframe, and the base station is not the resource information that the UE configuration sends the uplink detection signal in second subframe.Wherein, the resource information includes at least one of time-domain resource information, frequency domain resource information and code domain resource information of the uplink detection signal.

In the present invention, base station the first subframe (subframe #n+1) instruction UE third subframe (subframe #n+4) send uplink detection information, therefore base station be in advance UE be configured with third subframe send uplink detection signal resource information.With reference to the prior art, base station sends uplink detection signal in subframe #n+5 in subframe #n+1 instruction UE, and base station, which needs to configure for UE, sends the resource information of uplink detection signal in the second subframe (subframe #n+5).In the present invention, UE is according to base station in the instruction of the first subframe, and without sending uplink detection signal in the second subframe, therefore the unpromising UE in base station is pre-configured in the resource information that the second subframe sends uplink detection signal.

Optionally, the uplink detection signal is located at the last symbol in the third subframe, that is to say, that base station sends uplink detection signal in the last symbol of third subframe in the first subframe instruction UE.

Optionally, first upstream data occupies whole symbols in second subframe in addition to the symbol shared by the first signal, and first signal includes uplink demodulation reference signal and/or the uplink detection signal.

Optionally, the uplink detection signal is detection reference signal SRS；Alternatively, the uplink detection signal is the filling signal orthogonal with the SRS.

It is exemplary, the filling signal can be the other SRS sequences orthogonal with the SRS sent, a kind of new SRS signal (may be different with existing SRS due to sending position or configuration parameter), the signal orthogonal with SRS frequency division, orthogonal signal, DMRS signal etc. with SRS code point.

According to base station in the instruction of the first subframe, UE can send SRS or filling signal in third subframe, in this way, UE will not carry out LBT while other UE send SRS, avoid other UE from sending SRS and interfere to the LBT result of the UE.

Optionally, second subframe is the 4th subframe after first subframe, i.e., If the first subframe is subframe subframe #n+1, the second subframe is subframe #n+4.That is, base station can indicate that UE sends uplink detection signal in subframe #n+4 in subframe #n+1.In addition, according to, in relation to the standard of uplink scheduling, base station can indicate that UE sends upstream data in subframe #n+5 in subframe #n+1 in LTE protocol.

Second aspect discloses a kind of ascending transmission method, comprising:

User equipment (UE) receives the first downlink transfer information that base station is sent in the first subframe.The first downlink transfer information is used to indicate the UE and sends the first upstream data in the second subframe and send uplink detection signal in third subframe；Second subframe and the third subframe are later than first subframe in time, and second subframe and the third subframe are continuous in time, and second subframe is later than the third subframe；

The UE carries out channel sense before sending the uplink detection signal in the third subframe, i.e. execution LBT (Listen before talk, first listen and send out afterwards) operation.Certainly, UE can determine the time-domain position for executing LBT operation according to the time-frequency location for the transmission uplink detection signal that the first downlink transfer information indicates first, usually can execute LBT in the previous time-frequency location for sending the time-frequency location of uplink detection signal.Exemplary, UE sends the uplink detection signal in the last symbol of third subframe, then need to carry out LBT in the penultimate symbol of third subframe.

If the LBT is operated successfully, that is, channel idle is listened to, the UE then sends the uplink detection signal in the third subframe and sends first upstream data in the second subframe after the third subframe.That is, UE carries out channel sense LBT first in timing, uplink detection signal is sent after determining channel idle, retransmits upstream data later.

In the prior art, base station indicates that UE sends filling signal in the last symbol of subframe #n+4 in the UL grant of subframe #n.When the UL grant of subframe #n loses, the UE for not needing transmission SRS not can determine that whether need to transmit filling signal in #n+4 then.If the UE needs to carry out transmitting uplink data in subframe #n+5, UE does not transmit filling signal in subframe #n+4, then LBT can be in the last symbol of subframe #n+4, and then LBT can transmit SRS by other UE and interfere, UE listen to channel be it is busy, cause UE not can be carried out the transmission of normal UL data in subframe #n+5.

Method provided by the invention, instruction UE of the base station in the UL grant of the first subframe of downlink (subframe #n+1) transmits upstream data at the second subframe (#n+5) and needs to send uplink detection signal in third subframe (subframe #n+4), to when the UL grant of subframe #n loses, UE still can determine whether send uplink detection signal in subframe #n+4 in the UL grant of subframe #n+1 according to base station, it avoids UE and carries out LBT when other UE transmit SRS, and then it avoids SRS block (i.e. UE transmission SRS interferes the LBT of other UE) and the uplink of UE is impacted.

Optionally, the method also includes:

The UE receives the second downlink transfer information that the base station is sent in the 5th subframe, the second downlink transfer information is used to indicate that the UE sends the second upstream data and the uplink detection signal in third subframe or the second downlink transfer information is used to indicate the UE and sends the uplink detection signal in third subframe.Wherein, the third subframe is later than the 5th subframe in time；First subframe and the 5th subframe are continuous in time, and first subframe is later than the 5th subframe in time.

Optionally, the UE is preconfigured the resource information that the uplink detection signal is sent in the third subframe, the UE is not preconfigured in the resource information that the uplink detection signal is sent in second subframe, wherein, the resource information includes at least one of time-domain resource information, frequency domain resource information and code domain resource information of the uplink detection signal.

The third aspect discloses a kind of base station, comprising:

Transmission unit, for sending the first downlink transfer information to user equipment (UE) in the first subframe, the first downlink transfer information is used to indicate the UE and sends in the second subframe It first upstream data and is used to indicate the UE and sends uplink detection signal in third subframe；

Wherein, second subframe and the third subframe are later than first subframe in time, and second subframe and the third subframe are that continuous and described second subframe is later than the third subframe in time.

Base station provided by the invention, instruction UE in the UL grant of the first subframe of downlink (subframe #n+1) transmits upstream data at the second subframe (#n+5) and needs to send uplink detection signal in third subframe (subframe #n+4), to when the UL grant of subframe #n loses, UE still can determine whether send uplink detection signal in subframe #n+4 in the UL grant of subframe #n+1 according to base station, it avoids UE and carries out LBT when other UE transmit SRS, and then it avoids SRS block (i.e. UE transmission SRS interferes the LBT of other UE) and the uplink of UE is impacted.

Optionally, the transmission unit is also used to, the second downlink transfer information is sent to the UE in the 5th subframe, the second downlink transfer information is used to indicate that the UE sends the second upstream data and the uplink detection signal in the third subframe or the second downlink transfer information is used to indicate the UE and sends the uplink detection signal in the third subframe；

Wherein, the third subframe is later than the 5th subframe in time；First subframe and the 5th subframe are that continuous and described first subframe is later than the 5th subframe in time in time.

Optionally, above-mentioned base station further includes configuration unit,

The configuration unit is used for, and has been pre-configured with the resource information of the uplink detection signal in the third subframe for the UE, pre- in second subframe not for the UE First configure the resource information of the uplink detection signal, wherein the resource information includes at least one of time-domain resource information, frequency domain resource information and code domain resource information of the uplink detection signal.

Optionally, the uplink detection signal is located at the last symbol in the third subframe.

Optionally, second subframe is the 4th subframe after first subframe.

Fourth aspect discloses a kind of user equipment (UE), comprising:

Receiving unit, for receiving the first downlink transfer information that base station is sent in the first subframe, the first downlink transfer information, which is used to indicate the UE and sends the first upstream data in the second subframe and be used to indicate the UE, sends uplink detection signal in third subframe；Second subframe and the third subframe are later than first subframe in time, and second subframe and the third subframe are continuous in time, and second subframe is later than the third subframe；

It first listens and sends out LBT unit afterwards, for executing LBT operation before sending the uplink detection signal in the third subframe；

Transmission unit sends the uplink detection signal in the third subframe and sends first upstream data in second subframe if operating successfully for the LBT.

Optionally, the receiving unit is also used to, the second downlink transfer information that the base station is sent is received in the 5th subframe, the second downlink transfer information is used to indicate that the UE sends the second upstream data and the uplink detection signal in third subframe or the second downlink transfer information is used to indicate the UE and sends the uplink detection signal in third subframe；

Wherein, the third subframe is later than the 5th subframe in time；First subframe and the 5th subframe are continuous in time, and first subframe is late in time In the 5th subframe.

Optionally, the UE is not preconfigured the resource information of the uplink detection signal in second subframe, the UE has been preconfigured the resource information of the uplink detection signal in the third subframe, wherein, the resource information includes at least one of time-domain resource information, frequency domain resource information and code domain resource information of the uplink detection signal.

Optionally, second subframe is the 4th subframe after first subframe.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, the drawings to be used in the description of the embodiments or prior art will be briefly described below, apparently, drawings in the following description are only some embodiments of the invention, for those of ordinary skill in the art, without creative efforts, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the schematic diagram that UE provided in an embodiment of the present invention sends filling signal；

Fig. 2 is the method schematic diagram provided in an embodiment of the present invention for avoiding SRS from interfering PUSCH；

Fig. 3 is the schematic diagram of communication system provided in an embodiment of the present invention；

Fig. 3 .1 is the timing diagram of the first, second, third subframe provided in an embodiment of the present invention；

Fig. 4 is another schematic diagram of communication system provided in an embodiment of the present invention；

Fig. 5 is the flow diagram of ascending transmission method provided in an embodiment of the present invention；

Fig. 6 is that the (n+1)th subframe provided in an embodiment of the present invention indicates that the n-th+4 subframe sends the schematic diagram of uplink detection signal；

Fig. 7 is that base station provided in an embodiment of the present invention indicates that UE sends the schematic diagram of uplink detection signal；

Fig. 8 is the structural block diagram of base station provided in an embodiment of the present invention；

Fig. 9 is another structural block diagram of base station provided in an embodiment of the present invention；

Figure 10 is the structural block diagram of UE provided in an embodiment of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, shall fall within the protection scope of the present invention.

Firstly, doing several concepts of the present invention to illustrate.

Multi-subscriber dispatching: in LTE communication system, multiple communication terminals can carry out signal transmission or signal reception simultaneously in the same subframe, on frequency spectrum resource.I.e. each user occupancy part frequency domain resource, so as to accommodate multiple user's concurrent multiplexing frequency spectrum resources simultaneously.

LBT: it before node busy channel sends signal, first has to detect channel, detection mode can have energy measuring, signal detection etc..After obtaining the channel right to use, just signal can be sent with busy channel.

The channel right to use: communication node obtains the license in channel transmission signal by certain mode, can be considered obtaining the right to use of the channel.For example, channel resource is distributed by dispatching algorithm in base station, the node being scheduled can then be considered as obtaining the channel right to use.In the present invention, UE is refered in particular in accordance with the communication mechanism sent out afterwards is first listened, and detection channel result is the free time, can carry out data transmission, then can also be considered as obtaining the channel right to use.

Base station (eNB or cell or access network equipment): in general, being signalling in downstream communications link.It is receiving side signal in uplink communication links, and the sender of control information (launch party's control signaling) etc..

UE (user terminal): in general, being the sender of signal in uplink communication links.It is the recipient of signal in downstream communications link.

In LAA UL (uplink, uplink) transmission under multi-subscriber dispatching scene, need LBT mechanism is followed, i.e. UE needs to listen to wireless channel before signal transmission.It is only dispatched to by base station, and channel sense is the result is that idle UE (i.e. the acquisition channel right to use) just can be carried out signal transmission.In addition, LAA UL transmission includes that SRS is sent, PUSCH (Physical uplink sharing channel, Physical Uplink Shared Channel) is sent and the transmission of other UL related data, signaling, signals etc..Wherein, SRS transmission is usually located at the last one OFDM symbol of subframe, and the multiple UE sent in the subframe being dispatched to by base station are multiplexed the running time-frequency resource by way of frequency division and code point.On the symbol, certain UE for not needing transmission SRS on the symbol, need to carry out LBT if needing to send PUSCH in next subframe.

Can have the following problems at this time: the UE for sending SRS can interfere the UE for carrying out LBT, and it is busy that the UE for allowing to carry out LBT, which listens to channel, thus cannot be in the transmission of next subframe progress UL data.In order to avoid the problem, scheme shown in FIG. 1 is proposed in standard, with reference to Fig. 1, it needs to send the UE (UE2) of PUSCH in next subframe, a uplink detection signal can be sent, LBT can be both aligned and listen to position on the time-frequency location that other UE (UE1) send SRS, the block of SRS is avoided, PUSCH can also be interfered to avoid SRS is sent.Further, according to the consensus standard of existing LTE/LTE-A, base station indicates that UE sends filling signal (i.e. above-mentioned uplink detection signal) on subframe #n+4 in the UL grant of subframe #n.Since the transmission of SRS is always in first symbol of the last one OFDM symbol of subframe or next subframe, the transmission of filling signal is also in the last one OFDM symbol of subframe or first symbol of next subframe.

With reference to Fig. 2, when the UL grant of subframe #n loses, the UE for not needing transmission SRS not can determine that whether need to transmit filling signal in #n+4 then.If the UE needs to carry out transmitting uplink data in subframe #n+5, UE does not transmit filling signal in subframe #n+4, then LBT can be in the last symbol of subframe #n+4, and then LBT can transmit SRS by other UE and interfere, UE listen to channel be it is busy, cause UE not can be carried out the transmission of normal UL data in subframe #n+5.

The principle of the invention lies in base station indicates to send uplink detection signal in UL subframe #n+4 in the UL grant of DL subframe #n+1, impacts so as to avoid the UE for sending SRS to the UL transmission for the UE for not sending SRS.Meanwhile even if the UL grant of DL subframe #n loses, equally can to avoid send SRS UE to the UE for not sending SRS It is impacted in the uplink of subframe #n+5.

Embodiment 1:

The embodiment of the present invention provides a kind of communication system, as shown in figure 3, the communication system includes base station and at least one UE.Base station carries out uplink scheduling to UE by UL grant, and UE needs to send uplink detection signal before sending upstream data.

Further, for the UE that the embodiment of the present invention is dispatched by one by the base station, ascending transmission method provided in an embodiment of the present invention is introduced.

As shown in figure 4, the base station 10 includes processor 101, transmitter 102 and receiver 103 and memory 104.The UE20 includes processor 201, transmitter 202 and receiver 203 and memory 204.

In the specific implementation, ascending transmission method provided by the invention includes:

S1. the transmitter 101 of base station sends the first downlink transfer information to user equipment (UE) in the first subframe, indicates that the UE sends the first upstream data in the second subframe and is used to indicate the UE and sends uplink detection signal in third subframe.Receiver 203 receives the first downlink transfer information.

With reference to Fig. 3 .1, second subframe and the third subframe here is later than first subframe in time, and second subframe and the third subframe are that continuous and described second subframe is later than the third subframe in time.Second subframe and the third subframe are that continuously i.e. described second subframe and the third subframe are two subframes adjacent in timing in time.

S2. processor 201 carries out channel sense before sending the uplink detection signal in the third subframe, i.e. execution LBT (Listen before talk, first listen and send out afterwards) operation.

Certainly, UE can determine the time-domain position for executing LBT operation according to the time-frequency location for the transmission uplink detection signal that the first downlink transfer information indicates first, usually can execute LBT in the previous time-frequency location for sending the time-frequency location of uplink detection signal.Exemplary, UE sends the uplink detection signal in the last symbol of third subframe, then need to carry out LBT in the penultimate symbol of third subframe.

If S3. the LBT is operated successfully, that is, listen to channel idle, the UE then sent in the third subframe uplink detection signal and after the third subframe First upstream data is sent in two subframes.

That is, UE carries out channel sense LBT first in timing, uplink detection signal is sent after determining channel idle, retransmits upstream data later.

It should be noted that processor 101, processor 201 can be central processing unit (English: central processing unit, abbreviation: CPU).

Transmitter 102, transmitter 202 can be by optical transmitting set, electric transmitter, wireless transmitter or any combination thereof realizations.Such as, optical transmitting set can be Small Form-Factor Pluggable (English: small form-factor pluggable transceiver, abbreviation: SFP) transmitter (English: transceiver), enhance Small Form-Factor Pluggable (English: enhanced small form-factor pluggable, abbreviation: SFP+) transmitter or 10 gigabit Small Form-Factor Pluggables (English: 10Gigabit small form-factor pluggable, abbreviation: XFP) transmitter.Electric transmitter can be Ethernet (English: Ethernet) network interface controller (English: network interface controller, abbreviation: NIC).Wireless transmitter can be radio network interface controller (English: wireless network interface controller, abbreviation: WNIC).

Receiver 103, receiver 203 can be by optical receiver, electric receiver, wireless receiver or any combination thereof realizations.For example, optical receiver can be Small Form-Factor Pluggable receiver, enhance Small Form-Factor Pluggable receiver or 10 gigabit Small Form-Factor Pluggable receivers.Electric receiver can be ethernet network interface controller.Wireless receiver can be radio network interface controller.

Memory 104 (memory 204) is transferred to the processor 101 (processor 201) for storing program code, and by the program code, and processor 101 (processor 201) executes following instructions according to program code.Memory 104 (memory 204) may include volatile memory (English: volatile memory), such as random access memory (English: random-access memory, abbreviation: RAM)；Memory 104 (memory 204) also may include nonvolatile memory (English: non-volatile memory), such as read-only memory (English: read-only memory, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state hard disk (English: solid-state drive, abbreviation: SSD).Memory 104 (memory 204) can also include the combination of the memory of mentioned kind.

Embodiment 2:

The embodiment of the present invention provides a kind of ascending transmission method, as shown in figure 5, the described method comprises the following steps:

301, UE obtains the resource information of uplink detection signal.

Wherein, the resource information is the resource information that uplink detection signal is sent in third subframe (can be subframe #n+4) that base station is UE configuration, but the unpromising UE configuration in base station sends the resource information of the uplink detection signal in second subframe (subframe #n+5).Here the second subframe and the third subframe is that continuous and described second subframe is later than the third subframe in time.

It should be noted that the resource information includes at least one of time-domain resource information, frequency domain resource information and code domain resource information of the uplink detection signal.In addition, the uplink detection signal is detection reference signal SRS.Alternatively, being also possible to orthogonal with SRS filling signal on signal form (padding SRS).The filling signal can be the other SRS sequences orthogonal with the SRS sent, a kind of new SRS signal (may be different with existing SRS due to sending position or configuration parameter), the orthogonal signal of the signal and SRS code orthogonal with SRS frequency division point, DMRS signal etc..

In the specific implementation, the resource information of the uplink detection signal can be pre-configured with by base station, by static state, semi-static or dynamic signaling is notified to UE.For example, RRC signaling, UL grant signaling and other signalling formats.It is of course also possible to be UE according to predefined Rule, it is not limited thereto.

302, base station sends the first downlink transfer information to user equipment (UE) in the first subframe, and the first downlink transfer information, which is used to indicate the UE and sends the first upstream data in the second subframe and be used to indicate the UE, sends uplink detection signal in third subframe.

Here second subframe and the third subframe is later than first subframe in time, and second subframe and the third subframe are that continuous and described second subframe is later than the third subframe in time.Second subframe and the third subframe are that continuously i.e. described second subframe and the third subframe are two subframes adjacent in timing in time.

According to the sequential relationship of the first subframe, the second subframe and third subframe, for example, the first subframe can be the (n+1)th subframe, and the second subframe can be the n-th+5 subframe, third Frame can be the n-th+4 subframe.Exemplary, with reference to Fig. 6, base station indicates that UE sends uplink detection signal in the n-th+4 subframe by the UL grant of the (n+1)th subframe, and indicates UE in the n-th+5 sub-frame transmission upstream data.

In the specific implementation, the first downlink transfer information indicates the time-domain OFDM symbol of uplink detection signal.The DL subframe for carrying the first downlink transfer information can be authorization carrier wave, be also possible to unauthorized carrier wave.

In addition, base station can directly be indicated in the first subframe in the OFDM symbol position of third subframe transmission uplink detection signal, SRS is sent in third subframe subframe by the way that the UE of the first downlink transfer message scheduling is existing, also has and sends filling signal.Then UE can reserve filling signal or the sending time of SRS when subframe #n+4 carries out transmitting uplink data.Alternatively, base station can directly indicate that UE third subframe executes the position of LBT in the first subframe, so that UE is according to the position acquisition of execution LBT in the time of the sub-frame transmission upstream data and the time of transmission SRS.Further, base station can be in the transmission of the uplink detection signal of at least one subframe after the first subframe indicates third subframe by the first downlink transfer information.

Optionally, base station can also be in the previous subframe of the first subframe --- the 5th subframe (can be subframe #n) while indicating whether third subframe needs to transmit the uplink detection signal, certain 5th subframe can not also indicate.If the 5th subframe indicates whether UE needs to transmit the uplink detection signal in third subframe, specifically, base station sends the second downlink transfer information to the UE in the 5th subframe, and the second downlink transfer information is used to indicate the UE and sends the second upstream data and the uplink detection signal in the third subframe.Alternatively, the second downlink transfer information is only used for indicating that the UE sends the uplink detection signal in the third subframe and do not indicate that UE sends second upstream data in the third subframe.The first downlink transfer information, the second downlink transfer information of the embodiment of the present invention can be the UL grant that base station is sent to UE.

If UE can receive the second downlink transfer information of the 5th subframe of base station transmission, the uplink detection signal can be sent according to the instruction of the second downlink transfer information；Otherwise, UE can only determine whether to send the uplink detection signal and information relevant to the uplink detection signal is sent in the first subframe by the first downlink transfer information received.

303, UE, which is obtained, executes the relevant configuration of LBT in third subframe.

Here, UE obtains the relevant configuration of LBT, can be that base station is predefined or base station configuration.Specifically, base station can notify UE by static state or semi-static or dynamic signaling, further, it is possible to be RRC signaling or UL grant signaling.

In addition, the relevant configuration of LBT, can be the time-domain position information of LBT, frequency domain position information, CCA (clear channel assessment, the evaluation and test of headroom channel) thresholding relevant information of LBT, competition window relevant information, other LBT relevant configurations.

The time-domain position information of LBT can be base station configuration；It is also possible to what UE was calculated according to the time-domain position of uplink detection reference signal, i.e., does not need the time-domain information of base station configuration LBT at this time.Usually LBT can be executed in the previous time-frequency location for sending the time-frequency location of uplink detection signal.Exemplary, UE sends the uplink detection signal in the last symbol of third subframe, then need to carry out LBT in the penultimate symbol of third subframe.

Certainly, it is also possible to that UE is self-determining, any time that UE is in reception pattern can carry out LBT operation, i.e., does not also need the time-domain information of base station configuration LBT at this time, meanwhile UE does not need to determine to determine that the moment executes LBT operation according to the time-domain position for sending uplink detection reference signal yet.

304, LBT operation is executed before UE sends the uplink detection signal in the third subframe.

Wherein, so-called execution LBT operation carries out channel sense, it is determined whether acquisition has channel occupancy power.

If 305, the LBT is operated successfully, UE sends the uplink detection signal in the third subframe and sends first upstream data in the second subframe after the third subframe.

Wherein, the LBT, which is operated, successfully listens to channel idle.That is, UE carries out channel sense LBT first in timing, uplink detection signal is sent after determining channel idle, retransmits upstream data later.

If LBT operation failure listens to channel busy, UE cannot send the uplink detection signal in third subframe, can not send first upstream data in the second subframe.

Further, in embodiments of the present invention, the timing information of the first subframe and the second subframe, which can be, does not limit.The subframe lattice that the present invention is defined according to LTE/LTE-A existing protocol Formula and UL data transmission timing relationship, the second subframe can be the 4th subframe after the first subframe, and by taking the scheduling of normal single sub-frame as an example, and dispatching granularity is a LTE/LTE-A subframe, i.e. 1ms.Specifically: for cross-subframe scheduling or more subframe schedulings, one DL subframe can indicate the scheduling of multiple UL subframes, if it is list frame scheduling, the UL grant of i.e. one DL subframe dispatches a UL subframe, at this time, DL subframe #n+1UL grant information indicates the transmission of the SRS (or filling signal) of UL subframe #n+4, i.e. base station sends uplink detection signal in subframe #n+4 in subframe #n+1 instruction UE.In addition, subframe #n+1 also can indicate that the transmission of the uplink detection signal of the UL subframe after UL subframe #n+4.

But the present invention is not limited to existing LTE/LTE-A subframe sizes and timing, time delay relationship.To support cross-subframe scheduling or more subframe schedulings, and the subframe that the time is shorter, subframe size 1ms can be expressed as x milliseconds (ms), scheduling subframe can be expressed as the n-th+ax subframe, time delay between scheduling and data transmission can be expressed as n+kx subframe, and wherein k is the multiple of a.I.e. base station is in subframe #n+ax scheduling subframe #n+kx.Specifically, by taking a=1 as an example, in subframe #n+ax, i.e. the n-th+x of subframe, the n-th+3x of scheduling subframe is applied to the present invention, refering to what is shown in Fig. 7, SRS or filling signal are then transmitted in #n+kx in subframe #n+ (a+1) x instruction UE in base station.

Embodiment 3:

The embodiment of the invention provides a kind of base stations, as shown in figure 8, the base station includes transmission unit 401.

Transmission unit 401, for the first subframe to user equipment (UE) send the first downlink transfer information, the first downlink transfer information be used to indicate the UE the first upstream data is sent in the second subframe and be used to indicate the UE is sent in third subframe uplink detection believe Number.

The transmission unit 401 is also used to, the second downlink transfer information is sent to the UE in the 5th subframe, the second downlink transfer information is used to indicate that the UE sends the second upstream data and the uplink detection signal in the third subframe or the second downlink transfer information is used to indicate the UE and sends the uplink detection signal in the third subframe.

As shown in figure 9, the base station further includes configuration unit 402.

The configuration unit 402 is used for, the resource information of the uplink detection signal has been pre-configured in the third subframe for the UE, it is not pre-configured with the resource information of the uplink detection signal in second subframe for the UE, wherein, the resource information includes at least one of time-domain resource information, frequency domain resource information and code domain resource information of the uplink detection signal.

It should be noted that the uplink detection signal is located at the last symbol in the third subframe.

First upstream data occupies whole symbols in second subframe in addition to the symbol shared by the first signal, and first signal includes uplink demodulation reference signal and/or the uplink detection signal.

The uplink detection signal is detection reference signal SRS；Alternatively, the uplink detection signal is the filling signal orthogonal with the SRS.

Second subframe is the 4th subframe after first subframe.

It should be noted that the transmission unit 401 in the present embodiment can be the transmitter of base station.Setting unit 402 can integrate to be realized in the processor of base station, in addition it is also possible to be stored in the memory of base station in the form of program code, is called in memory by processor The code of storage executes the function of arrangement above unit 402.

Embodiment 4:

The embodiment of the present invention provides a kind of user equipment (UE), and as shown in Figure 10, the UE includes:

Receiving unit 501, for receiving the first downlink transfer information that base station is sent in the first subframe, the first downlink transfer information, which is used to indicate the UE and sends the first upstream data in the second subframe and be used to indicate the UE, sends uplink detection signal in third subframe；Second subframe and the third subframe are later than first subframe in time, and second subframe and the third subframe are continuous in time, and second subframe is later than the third subframe.

It first listens and sends out LBT unit 502 afterwards, for executing LBT operation before sending the uplink detection signal in the third subframe.

Transmission unit 503 sends the uplink detection signal in the third subframe and sends first upstream data in second subframe if operating successfully for the LBT.

The receiving unit 501 is also used to, the second downlink transfer information that the base station is sent is received in the 5th subframe, the second downlink transfer information is used to indicate that the UE sends the second upstream data and the uplink detection signal in third subframe or the second downlink transfer information is used to indicate the UE and sends the uplink detection signal in third subframe.

Wherein, the third subframe is later than the 5th subframe in time；First subframe and the 5th subframe are continuous in time, and first subframe is later than the 5th subframe in time.

It should be noted that, the UE is not preconfigured the resource information of the uplink detection signal in second subframe, the UE has been preconfigured the resource information of the uplink detection signal in the third subframe, wherein, the resource information includes at least one of time-domain resource information, frequency domain resource information and code domain resource information of the uplink detection signal.

The uplink detection signal is located at the last symbol in the third subframe.

Second subframe is the 4th subframe after first subframe.

UE provided by the invention, according to the instruction in the UL grant of the first subframe of downlink (subframe #n+1), upstream data is transmitted at the second subframe (#n+5) and needs to send uplink detection signal in third subframe (subframe #n+4), to when the UL grant of subframe #n loses, UE still can determine whether send uplink detection signal in subframe #n+4 in the UL grant of subframe #n+1 according to base station, it avoids UE and carries out LBT when other UE transmit SRS, and then it avoids SRS block (i.e. UE transmission SRS interferes the LBT of other UE) and the uplink of UE is impacted.

It should be noted that receiving unit 501 can be the receiver of UE in the present embodiment, transmission unit 503 can be the transmitter of UE, and the transmitter of UE can be with the reception integrated transceiver of UE.LBT unit 502 can integrate to be realized in the processor of UE, in addition it is also possible to be stored in the memory of UE in the form of program code, is called the code stored in memory by processor, is executed the function of the above LBT unit 502.

Through the above description of the embodiments, it is apparent to those skilled in the art that, for convenience and simplicity of description, only the example of the division of the above functional modules, in practical application, it can according to need and be completed by different functional modules above-mentioned function distribution, i.e., the internal structure of device is divided into different functional modules, to complete all or part of the functions described above.The specific work process of the device of foregoing description, It can refer to corresponding processes in the foregoing method embodiment, details are not described herein.

The unit as illustrated by the separation member may or may not be physically separated, and component shown as a unit can be a physical unit or multiple physical units, it can and it is in one place, or may be distributed over multiple and different places.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.In addition, the functional units in various embodiments of the present invention may be integrated into one processing unit, it is also possible to each unit and physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated unit both can take the form of hardware realization, can also realize in the form of software functional units.

If the integrated unit is realized in the form of SFU software functional unit and when sold or used as an independent product, can store in a read/write memory medium.Based on this understanding, substantially all or part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products technical solution of the present invention in other words, the software product is stored in a storage medium, it uses including some instructions so that an equipment (can be single-chip microcontroller, chip etc.) or processor (processor) perform all or part of the steps of the method described in the various embodiments of the present invention.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), the various media that can store program code such as magnetic or disk.

It is described above; only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and anyone skilled in the art is in the technical scope disclosed by the present invention; it can easily think of the change or the replacement, should be covered by the protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

A kind of ascending transmission method characterized by comprising

Base station sends the first downlink transfer information to user equipment (UE) in the first subframe, and the first downlink transfer information, which is used to indicate the UE and sends the first upstream data in the second subframe and be used to indicate the UE, sends uplink detection signal in third subframe；

Wherein, second subframe and the third subframe are later than first subframe in time, and second subframe and the third subframe are that continuous and described second subframe is later than the third subframe in time.
The method according to claim 1, wherein the method also includes:

The base station sends the second downlink transfer information to the UE in the 5th subframe, the second downlink transfer information is used to indicate that the UE sends the second upstream data and the uplink detection signal in the third subframe or the second downlink transfer information is used to indicate the UE and sends the uplink detection signal in the third subframe；

Wherein, the third subframe is later than the 5th subframe in time；First subframe and the 5th subframe are that continuous and described first subframe is later than the 5th subframe in time in time.
According to claim 1 or 2 methods stated, which is characterized in that

The base station is not the resource information that the UE is pre-configured with the uplink detection signal in second subframe, the base station is the resource information that the UE has been pre-configured with the uplink detection signal in the third subframe, wherein, the resource information includes at least one of time-domain resource information, frequency domain resource information and code domain resource information of the uplink detection signal.
Method according to any one of claims 1 to 3, which is characterized in that

The uplink detection signal is located at the last symbol in the third subframe.
Method according to any one of claims 1 to 4, which is characterized in that

First upstream data occupies whole symbols in second subframe in addition to the symbol shared by the first signal, and first signal includes uplink demodulation reference signal and/or the uplink detection signal.
Method according to any one of claims 1 to 5, which is characterized in that described Uplink detection signal is detection reference signal SRS；Alternatively,

The uplink detection signal is the filling signal orthogonal with the SRS.
Method according to any one of claims 1 to 6, which is characterized in that second subframe is the 4th subframe after first subframe.
A kind of ascending transmission method characterized by comprising

User equipment (UE) receives the first downlink transfer information that base station is sent in the first subframe, and the first downlink transfer information, which is used to indicate the UE and sends the first upstream data in the second subframe and be used to indicate the UE, sends uplink detection signal in third subframe；Second subframe and the third subframe are later than first subframe in time, and second subframe and the third subframe are continuous in time, and second subframe is later than the third subframe；

The UE executes first to listen before sending the uplink detection signal in the third subframe sends out LBT operation afterwards；

If the LBT is operated successfully, the UE sends the uplink detection signal in the third subframe and sends first upstream data in second subframe.
According to the method described in claim 8, it is characterized in that, the method also includes:

The UE receives the second downlink transfer information that the base station is sent in the 5th subframe, the second downlink transfer information is used to indicate that the UE sends the second upstream data and the uplink detection signal in third subframe or the second downlink transfer information is used to indicate the UE and sends the uplink detection signal in third subframe；

Wherein, the third subframe is later than the 5th subframe in time；First subframe and the 5th subframe are continuous in time, and first subframe is later than the 5th subframe in time.
Method according to claim 8 or claim 9, which is characterized in that

The UE is not preconfigured the resource information of the uplink detection signal in second subframe, the UE has been preconfigured the resource information of the uplink detection signal in the third subframe, wherein, the resource information includes at least one of time-domain resource information, frequency domain resource information and code domain resource information of the uplink detection signal.
According to the described in any item methods of claim 8 to 10, which is characterized in that

The uplink detection signal is located at the last symbol in the third subframe.
Method according to any one of claims 8 to 11, which is characterized in that

First upstream data occupies whole symbols in second subframe in addition to the symbol shared by the first signal, and first signal includes uplink demodulation reference signal and/or the uplink detection signal.
According to the described in any item methods of claim 8 to 12, which is characterized in that the uplink detection signal is detection reference signal SRS；Alternatively,

The uplink detection signal is the filling signal orthogonal with the SRS.
According to the described in any item methods of claim 8 to 13, which is characterized in that second subframe is the 4th subframe after first subframe.
A kind of base station characterized by comprising

Transmission unit, for sending the first downlink transfer information to user equipment (UE) in the first subframe, the first downlink transfer information, which is used to indicate the UE and sends the first upstream data in the second subframe and be used to indicate the UE, sends uplink detection signal in third subframe；

Wherein, second subframe and the third subframe are later than first subframe in time, and second subframe and the third subframe are that continuous and described second subframe is later than the third subframe in time.
Base station according to claim 15, it is characterized in that, the transmission unit is also used to, the second downlink transfer information is sent to the UE in the 5th subframe, the second downlink transfer information is used to indicate that the UE sends the second upstream data and the uplink detection signal in the third subframe or the second downlink transfer information is used to indicate the UE and sends the uplink detection signal in the third subframe；

Wherein, the third subframe is later than the 5th subframe in time；First subframe and the 5th subframe are that continuous and described first subframe is later than the 5th subframe in time in time.
Base station according to claim 15 or 16, which is characterized in that it further include configuration unit,

The configuration unit is used for, the resource information of the uplink detection signal has been pre-configured in the third subframe for the UE, the resource information of the uplink detection signal it is not pre-configured in second subframe for the UE, wherein the resource information includes the uplink At least one of time-domain resource information, frequency domain resource information and code domain resource information of detectable signal.
The described in any item base stations 5-17 according to claim 1, which is characterized in that the uplink detection signal is located at the last symbol in the third subframe.
The described in any item base stations 5-18 according to claim 1, it is characterized in that, first upstream data occupies whole symbols in second subframe in addition to the symbol shared by the first signal, and first signal includes uplink demodulation reference signal and/or the uplink detection signal.
The described in any item base stations 5-19 according to claim 1, which is characterized in that the uplink detection signal is detection reference signal SRS；Alternatively,

The uplink detection signal is the filling signal orthogonal with the SRS.
The described in any item base stations 5-20 according to claim 1, which is characterized in that second subframe is the 4th subframe after first subframe.
A kind of user equipment (UE) characterized by comprising

Receiving unit, for receiving the first downlink transfer information that base station is sent in the first subframe, the first downlink transfer information, which is used to indicate the UE and sends the first upstream data in the second subframe and be used to indicate the UE, sends uplink detection signal in third subframe；Second subframe and the third subframe are later than first subframe in time, and second subframe and the third subframe are continuous in time, and second subframe is later than the third subframe；

It first listens and sends out LBT unit afterwards, for executing LBT operation before sending the uplink detection signal in the third subframe；

Transmission unit sends the uplink detection signal in the third subframe and sends first upstream data in second subframe if operating successfully for the LBT.
UE according to claim 22, it is characterized in that, the receiving unit is also used to, the second downlink transfer information that the base station is sent is received in the 5th subframe, the second downlink transfer information is used to indicate that the UE sends the second upstream data and the uplink detection signal in third subframe or the second downlink transfer information is used to indicate the UE and sends the uplink detection signal in third subframe；

Wherein, the third subframe is later than the 5th subframe in time；First subframe It is continuous in time with the 5th subframe, and first subframe is later than the 5th subframe in time.
The UE according to claim 22 or 23, which is characterized in that

The UE is not preconfigured the resource information of the uplink detection signal in second subframe, the UE has been preconfigured the resource information of the uplink detection signal in the third subframe, wherein, the resource information includes at least one of time-domain resource information, frequency domain resource information and code domain resource information of the uplink detection signal.
According to the described in any item UE of claim 22-24, which is characterized in that the uplink detection signal is located at the last symbol in the third subframe.
According to the described in any item UE of claim 22-25, it is characterized in that, first upstream data occupies whole symbols in second subframe in addition to the symbol shared by the first signal, and first signal includes uplink demodulation reference signal and/or the uplink detection signal.
According to the described in any item UE of claim 22-26, which is characterized in that the uplink detection signal is detection reference signal SRS；Alternatively,

The uplink detection signal is the filling signal orthogonal with the SRS.
According to the described in any item UE of claim 22-27, which is characterized in that second subframe is the 4th subframe after first subframe.