CN107734653B

CN107734653B - Information feedback method, base station and user equipment

Info

Publication number: CN107734653B
Application number: CN201610654126.XA
Authority: CN
Inventors: 柯颋; 侯雪颖; 沈晓冬; 刘建军
Original assignee: Research Institute of China Mobile Communication Co Ltd; China Mobile Communications Corp
Current assignee: China Mobile Communications Group Co Ltd; Research Institute of China Mobile Communication Co Ltd
Priority date: 2016-08-10
Filing date: 2016-08-10
Publication date: 2021-10-26
Anticipated expiration: 2036-08-10
Also published as: CN107734653A

Abstract

The present invention discloses an information feedback method, a base station and a user equipment. The method includes: determining a feedback information transmission parameter of at least one user equipment; wherein the feedback information transmission parameter is used to at least characterize the feedback information for downlink information. time domain location parameters; generating downlink control information for the at least one user equipment based on the feedback information transmission parameters, and sending the downlink control information to the at least one user equipment.

Description

Information feedback method, base station and user equipment

Technical Field

The present invention relates to signal transmission technologies in the field of communications, and in particular, to an information feedback method, a base station, and a user equipment.

Background

Conventional LTE systems operate on licensed spectrum that is exclusive to telecommunications operators. In order to reduce signaling indication overhead, in the conventional LTE system, a fixed DL ACK/NACK feedback timing relationship is defined, that is, there is a fixed timing relationship between PDSCH transmission and corresponding ACK/NACK feedback. In both FDD and TDD systems, there is a fixed timing relationship between PDSCH transmission and corresponding ACK/NACK feedback. With the rapid increase of data traffic in the mobile internet, the use of the LTE technology in the unlicensed frequency band becomes a trend.

The unlicensed frequency band is open to all Radio Access Technologies (RATs) and all operators, and different operators have the same right to deploy respective RAT systems (e.g., WIFI and unlicensed frequency band LTE) on the unlicensed frequency band. Because sites deployed by different RAT operators (such as WIFI and unlicensed band LTE) are not subjected to interference coordination planning (such as site planning), the sites are not allowed to transmit services at the same time, otherwise, a strong mutual interference phenomenon is caused.

In order to enable a different operator of a different RAT system or a same RAT system to compete for using an unlicensed frequency band in a fair and orderly manner without conflict (i.e., simultaneous traffic transmission is prohibited), a Listen Before Talk (LBT) mechanism is introduced, that is, before data transmission is performed each time, a period of time is reserved for sensing a carrier, a Clear Channel Assessment (CCA) process is performed, data transmission is started when the carrier is sensed to be available, and the maximum duration of data transmission is limited each time.

When the LTE system is applied to an unlicensed spectrum, there are a plurality of operating modes, including: a transmission mode based on carrier aggregation, a transmission mode based on dual connectivity, and an unlicensed spectrum LTE system independent deployment mode. Regardless of the working mode, if the support of feedback of DL ACK/NACK on the unlicensed spectrum is allowed, the UL subframe transmission behavior will have uncertainty due to the UL LBT mechanism limitation, so the conventional DL ACK/NACK feedback mechanism with fixed timing will not adapt any more, otherwise the DL ACK/NACK feedback message may be lost frequently. Based on the above analysis, a new DL ACK/NACK feedback timing relationship needs to be studied.

In summary, conventional LTE systems operate on licensed spectrum that is exclusive to telecommunications operators. In order to reduce signaling indication overhead, in the conventional LTE system, a fixed DL ACK/NACK feedback timing relationship is defined, that is, there is a fixed timing relationship between PDSCH transmission and corresponding ACK/NACK feedback.

In some new application scenarios, such as operating on unlicensed spectrum, the UL LBT mechanism limits, which may cause uncertainty in UL subframe transmission behavior, so the conventional DL ACK/NACK feedback mechanism with fixed timing is no longer adaptive, otherwise the DL ACK/NACK feedback message may be lost frequently.

Disclosure of Invention

The present invention mainly aims to provide an information feedback method, a base station and a user equipment, and aims to solve the above problems in the prior art.

In order to achieve the above object, the present invention provides an information feedback method, including:

determining a feedback information transmission parameter of at least one user equipment; the feedback information transmission parameter is used for at least representing a time domain position parameter of feedback information aiming at downlink information;

and generating downlink control information aiming at the at least one user equipment based on the feedback information transmission parameters, and sending the downlink control information to the at least one user equipment.

The invention provides an information feedback method, which is applied to user equipment and comprises the following steps:

receiving downlink control information sent by a base station, and determining a feedback information transmission parameter; the feedback information transmission parameter is used for at least representing a time domain position parameter of feedback information aiming at downlink information;

and determining the position of an uplink resource aiming at downlink information at least based on a time domain position parameter contained in the feedback information transmission parameter, and sending the feedback information aiming at the downlink information to the base station at the uplink resource.

The invention provides a base station, which comprises:

a processing unit for determining a feedback information transmission parameter of at least one user equipment; the feedback information transmission parameter is used for at least representing a time domain position parameter of feedback information aiming at downlink information;

an information sending unit, configured to generate downlink control information for the at least one ue based on the feedback information transmission parameter, and send the downlink control information to the at least one ue.

The invention provides a user equipment, which comprises:

a receiving unit, configured to receive downlink control information sent by a base station, and determine a feedback information transmission parameter; the feedback information transmission parameter is used for at least representing a time domain position parameter of feedback information aiming at downlink information;

a processing unit, configured to determine, based on at least a time domain location parameter included in the feedback information transmission parameter, a location of an uplink resource for downlink information;

a sending unit, configured to send feedback information for the downlink information to the base station at the uplink resource.

According to the information feedback method, the base station and the user equipment, the base station can determine the feedback information transmission parameter corresponding to the user equipment, and further indicate the position of the time domain resource of the uplink resource fed back by the user equipment at least through the feedback information transmission parameter. Therefore, the position of the uplink feedback time domain resource of the user equipment is flexibly controlled, and dynamic and flexible frame structure configuration can be guaranteed.

Drawings

FIG. 1 is a first flowchart illustrating an information feedback method according to an embodiment of the present invention;

FIG. 2 is a second schematic flow chart illustrating an information feedback method according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating burst resources according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a base station according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a user equipment composition structure according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

The first embodiment,

An embodiment of the present invention provides an information feedback method, as shown in fig. 1, including:

step 101: determining a feedback information transmission parameter of at least one user equipment; the feedback information transmission parameter is used for at least representing a time domain position parameter of feedback information aiming at downlink information;

step 102: and generating downlink control information aiming at the at least one user equipment based on the feedback information transmission parameters, and sending the downlink control information to the at least one user equipment.

The time domain location parameter of the feedback information may characterize that the base station is configured to instruct the UE to perform a specific feedback time, so that the user equipment feeds back corresponding acknowledgement or non-acknowledgement information to the base station side according to the specific feedback time.

In this embodiment, first, a manner of indicating the feedback Information transmission parameter is indicated by Downlink Control Information (DCI), and the following is specifically described:

scene one,

Determining a feedback information transmission parameter of at least one user equipment, comprising one of:

determining a feedback information transmission parameter of the first user equipment;

correspondingly, the downlink control information for the at least one ue is generated based on the feedback information transmission parameter, which includes one of:

and adding the feedback information transmission parameter to the first downlink control information corresponding to the first user equipment.

That is, when determining the feedback information transmission parameter for a UE, indicating UE specific DL ACK/NACK feedback timing to a specific UE through specific DCI (e.g., DL resource scheduling indication DCI) corresponding to the UE; obviously, one DCI signaling in this scenario indicates one UE.

Scene two,

Selecting at least one user equipment scheduled in a first downlink subframe, and determining a feedback information transmission parameter of the at least one user equipment; adding a feedback information transmission parameter of at least one user equipment to the second downlink control information corresponding to the first downlink subframe.

Specifically, the eNB indicates common DL ACK/NACK feedback timing to all UEs scheduled in a specific DL subframe through common DCI of the DL subframe; by common DCI, it is meant that the DCI is within a common DCI search space (CSS: common search space) and is scrambled by common RNTI; obviously, one DCI signaling indicates multiple UEs in the same DL subframe.

Scene three,

Selecting a first group of user equipment scheduled in a second downlink subframe, wherein the first group of user equipment comprises at least one user equipment; determining a feedback information transmission parameter of at least one user equipment of the first set of user equipments; and adding the feedback information transmission parameter of at least one user equipment of the first group of user equipment to the third downlink control information corresponding to the first group of user equipment.

That is, in this scenario, multiple ue groups may be scheduled in the second downlink subframe, and the feedback information transmission parameters are determined only for all ues in one of the ue groups.

The eNB indicates the specific DL ACK/NACK feedback timing of the group UE to the specific group UE scheduled in the DL subframe through the specific DCI of the group UE scrambled by the specific group RNTI in the specific DL subframe; obviously, one DCI signaling indicates multiple UEs in the same DL subframe.

Scene four,

Selecting a first burst resource for downlink transmission, scheduling at least one user equipment in the first burst resource, and determining a feedback information transmission parameter of the at least one user equipment; and adding the feedback information transmission parameter of at least one user equipment to fourth downlink control information corresponding to the first burst resource for downlink transmission.

Wherein the burst resource (burst) refers to a set of consecutive subframes. Wherein, a burst resource may only include downlink subframes, which are called downlink bursts; or only include the uplink subframe, called uplink burst; or may include both uplink and downlink subframes, which is called uplink and downlink hybrid burst.

For example, in an LTE system or a 5G system, one burst resource may represent one radio frame. The downlink burst is a wireless frame only comprising downlink subframes; the uplink burst is a wireless frame only comprising uplink subframes; and the uplink and downlink hybrid burst is a radio frame including uplink and downlink subframes simultaneously.

Of course, in the LTE system or the 5G system, other burst resource definitions may be used, for example, a set of N consecutive subframes is referred to as a burst, where N is a positive integer.

In an unlicensed spectrum application scenario, the burst resource refers to a series of consecutive subframes that can be transmitted after the node (eNB or UE) succeeds in LBT. The total duration of the burst resource needs to meet the limit of MCOT (maximum Channel occupancy time), that is, the total duration of the burst resource needs to be less than or equal to MCOT.

For example, after the eNB succeeds in performing downlink LBT, the eNB may send a downlink burst with a total duration less than or equal to MCOT; and sending an uplink and downlink mixed burst, wherein the total duration of a downlink subframe and an uplink subframe in the uplink and downlink mixed burst is required to be less than or equal to MCOT. And after the uplink LBT is successfully performed by the UE, the uplink burst with the total duration less than or equal to the MCOT can be sent.

In scenario four, the first burst resource available for downlink transmission may represent a burst resource at least containing downlink resources. Therefore, the first burst resource for downlink transmission may be a downlink burst or a mixed uplink and downlink burst.

Specifically, the eNB indicates common DL ACK/NACK feedback timing to all UEs scheduled in a first burst resource for downlink transmission through common DCI of a specific downlink subframe in the burst resource.

Obviously, one piece of DCI signaling indicates multiple UEs in the same DL burst;

specifically, the eNB selects to transmit the common DCI in 1 or more DL subframes of the current burst resource, which may include the following:

the eNB transmits the common DCI in the 1 st DL subframe of the current burst resource;

the eNB transmits the common DCI in the last 1 DL subframe of the current burst resource;

the eNB transmits the common DCI in the 2 nd last DL subframe of the current burst resource.

Scene five,

Selecting a second group of user equipment scheduled in a second burst resource for downlink transmission, wherein the second group of user equipment comprises at least one user equipment; determining a feedback information transmission parameter for at least one user equipment of the second set of user equipments; adding a feedback information transmission parameter of at least one user equipment of a second group of user equipment to the fifth downlink control information corresponding to the second group of user equipment.

The eNB indicates the group UE specific DL ACK/NACK feedback timing to the specific group UE scheduled in the burst resource through the group UE specific DCI scrambled by the specific group RNTI in the specific burst resource which can be used for downlink transmission; obviously, one piece of DCI signaling indicates multiple UEs in the same DL burst;

the eNB selects to transmit the common DCI in 1 or more DL subframes of the current burst resource.

The method further comprises the following steps: in order to reduce the DCI signaling blind detection complexity of the UE, i.e. to avoid the UE blindly detecting common DCI corresponding to a burst resource in each downlink subframe of the burst resources available for downlink transmission, the eNB transmits the common DCI corresponding to the burst resource only in a specific downlink subframe. Thus, the UE only needs to blindly detect the common DCI corresponding to the burst resource in the specific downlink subframe of the burst resource available for downlink transmission.

Specifically, the eNB may send the downlink control information including the at least one ue feedback information transmission parameter in a specific downlink subframe in a first burst resource or a second burst resource used for downlink transmission according to a preset rule;

and/or the eNB sends the downlink control information containing at least one user equipment feedback information transmission parameter in a specific downlink subframe in a first burst resource or a second burst resource used for downlink transmission, and informs the user equipment of the configuration information corresponding to the specific downlink subframe through a resource configuration control (RRC) signaling.

On the basis of the scene, when the UE receives the UE specific DCI signaling, or common DCI signaling, or group UE specific DCI signaling, the UE directly feeds back DL ACK/NACK information according to DL ACK/NACK feedback timing indicated in the DCI signaling; or

And the UE calculates the DL ACK/NACK feedback timing by combining the DL ACK/NACK feedback timing indicated in the DCI signaling and the DL ACK/NACK feedback timing configuration information configured by the RRC, and feeds back the DL ACK/NACK information according to the calculated timing.

Based on the above scenario, the following description about the content of the indication of the DL ACK/NACK feedback timing specifically includes the following processing manners:

in a first way,

And determining a subframe offset corresponding to at least one user equipment, and using the subframe offset as the feedback information transmission parameter.

Specifically, the DL ACK/NACK feedback timing DCI signaling only includes a subframe offset k; for the case of indication by UE specific DCI, or by common DCI for a specific DL subframe, or by group specific DCI scrambled by a specific group RNTI in a specific DL subframe, if the UE detects PDSCH transmission on DL subframe n-k, the UE replies ACK/NACK in UL subframe n. Wherein n and k are integers.

For the case of indication by common DCI in a specific burst resource or by group specific DCI scrambled by a specific group RNTI in a specific burst resource, if the UE detects the above-mentioned DCI indication on DL subframe n, the UE selects to feed back ACK/NACK messages for all received DL PDSCH transmissions within the burst resource at the following positions.

ACK/NACK feedback timing is n + K1, where K1 is some constant (e.g., K1 is 0,4, …), or some parameter configured in advance by RRC.

ACK/NACK feedback timing is the last DL subframe + K2 of the current burst resource, where K2 is some constant (e.g., K1 is 0,4, …) or some parameter configured in advance by RRC;

ACK/NACK feedback timing is the first DL subframe + K3 of the current burst resource, where K3 is some constant (e.g., K1 is 0,4, …) or some parameter configured in advance by RRC;

which understanding the UE specifically employs depends on standard protocol specifications, or RRC signaling configuration.

And secondly, determining a burst resource offset corresponding to at least one user equipment, and taking the burst resource offset as the feedback information transmission parameter. The DL ACK/NACK feedback timing DCI signaling only includes cross burst indication:

the DL ACK/NACK feedback timing DCI signaling comprises cross burst field, which is used to instruct the UE to feed back DL ACK/NACK information in the next burst resource which is available for uplink transmission and is next to the current burst resource.

And when the length of the burst resource offset indication information is one bit, indicating the user equipment to select a first or a second burst resource which contains the burst resource currently sending the downlink control information and can be used for uplink transmission to send feedback information.

For example, cross burst indicates that the field takes up only 1 bit.

If the burst resource is a downlink burst, when the cross burst field takes a value of 0, the UE selects to feed back DL ACK/NACK information in the first burst resource which is used for uplink transmission and is next to the current burst resource; and when the cross burst field takes a value of 1, the UE selects to feed back DL ACK/NACK information in a second burst resource which can be used for uplink transmission and is next to the current burst resource.

If the burst resource is an uplink and downlink mixed burst, when the cross burst field takes a value of 0, the UE selects to feed back DL ACK/NACK information in the current burst resource; and when the cross burst field takes a value of 1, the UE selects to feed back DL ACK/NACK information in the first burst resource which can be used for uplink transmission and is next to the current burst resource.

And when the length of the indication information is at least two bits, indicating the user equipment to select the M +1 th burst resource which contains the burst resource currently sending the downlink control information and can be used for uplink transmission to send the feedback information, wherein M is an integer greater than or equal to 0.

For example, the cross burst indication field m occupies a plurality of bits, indicating that the UE selects to feed back DL ACK/NACK information in the (m +1) th burst resource which can be used for uplink transmission and includes the current burst, where m is 0,1, ….

The UE needs to further select which UL subframe to feed back DL ACK/NACK information in the selected burst resource available for uplink transmission. Specifically, the method comprises the following steps:

ACK/NACK feedback timing is the sequential k-th UL subframe of the burst resource selected to be available for uplink transmission, where k is 1,2, …, and k is some constant or some parameter configured in advance by the RRC;

ACK/NACK feedback timing — the k-last UL subframe of the burst resource selected to be available for uplink transmission, where k is 1,2, …, and k is some constant or some parameter configured in advance by RRC;

The third method,

Determining a burst resource offset corresponding to at least one user equipment and a subframe offset in the burst resource, and using the burst resource offset and the subframe offset in the burst resource as the feedback information transmission parameter. That is, the DL ACK/NACK feedback timing DCI signaling contains both cross burst indication and subframe offset k. The UE selects to feed back DL ACK/NACK information in the several burst resources which are available for uplink transmission and are next to the current burst resources according to cross burst indication; further, the UE selects which UL subframe to feed back DL ACK/NACK information in the selected burst resource according to the indicated subframe offset k. Specifically, the method comprises the following steps:

ACK/NACK feedback timing is the (K + K4) th UL subframe in the order of the selected burst resource, where K4 is a certain constant (e.g., K4 is 0,1, …), or a certain parameter configured in advance by the RRC;

ACK/NACK feedback timing is the last K + K5 UL subframes of the selected burst resource, where K5 is a certain constant (e.g., K5 is 0,1, …) or a certain parameter configured in advance by RRC;

The fourth way,

And determining the burst resource offset corresponding to at least one user equipment and the frequency domain resource position of the uplink subframe, and taking the burst resource offset and the frequency domain resource position of the uplink subframe as the feedback information transmission parameters. The DL ACK/NACK feedback timing DCI signaling contains cross burst indication and frequency domain resource range index used in the subframe at the same time: it is considered that when cross burst feedback is supported, multiple DL subframes in multiple burst resources may be mapped into the same UL subframe. To simplify the frequency domain resource mapping method of DL ACK/NACK feedback information, the entire bandwidth of the UL subframe may be divided into several frequency domain resource usage ranges and indicated with a frequency domain resource range index. At this time, the eNB can map the ACK/NACK feedback information of different burst resources into different frequency domain resource ranges, and at this time, the UE only needs to determine the frequency domain position of the feedback ACK/NACK information in the configured frequency domain resource range through a display or implicit rule;

specifically, for the unlicensed spectrum situation, the frequency domain resource range may correspond to one or more RB interlace structures, where the RB interlace structure refers to a comb-shaped resource mapping structure, where the size of each comb is 1 PRB, and each comb has an equal distance, and occupies all bandwidths uniformly. Specifically, in a 20MHz bandwidth, the RB interlace structure occupies 10 PRBs, and is spaced by 9 PRBs between every 2 comb teeth (e.g., the RB interlace structure occupies 0 th, 9 th, 19 th, 29 th, 39 th, 49 th, 59 th, 69 th, 79 th, 89 th PRB resources in the frequency domain).

Specifically, for the conventional LTE system or 5G system, the frequency domain resource range may also refer to a PUCCH mapping range; the UE firstly selects to feed back DL ACK/NACK information in the first burst resource which is used for uplink transmission and is next to the current burst resource according to cross burst indication;

after determining which UL subframe in which burst resource feeds back DL ACK/NACK information, the UE further needs to further select which frequency domain resource range of the current subframe feeds back DL ACK/NACK information according to the frequency domain resource range index.

The fifth way,

Determining a burst resource offset, a subframe offset in the burst resource and a frequency domain resource position of an uplink subframe corresponding to at least one user equipment, and taking the burst resource offset, the subframe offset in the burst resource and the frequency domain resource position of the uplink subframe as the feedback information transmission parameters. The DL ACK/NACK feedback timing DCI signaling contains cross burst indication, subframe offset k and frequency domain resource range index used in the subframe at the same time: the UE firstly determines to feed back DL ACK/NACK information on which subframe of which burst resource can be used for uplink transmission according to cross burst indication and subframe offset k; then, the UE further selects which frequency domain resource range of the current subframe to feed back the DL ACK/NACK information according to the frequency domain resource range index.

And informing the user equipment of the parameter types contained in the feedback information transmission parameters in the downlink control information through a resource configuration control (RRC) signaling.

The DL ACK/NACK feedback timing DCI signaling may further include a burst resource indication, which is used to indicate the UE to feed back DL ACK/NACK information corresponding to which burst resource at a DL ACK/NACK feedback resource position determined in any manner.

Further, in view of the problem of UL LBT failure, if all or part of UEs scheduled in 1 or more burst resources available for downlink transmission fail to contend for a UL transmission opportunity in the indicated specific UL subframe for feeding back DL ACK/NACK due to the UL LBT failure, the following processing is performed:

when the feedback of part or all of the user equipment in at least one user equipment fails, generating updated feedback information transmission parameters aiming at the part or all of the user equipment; and generating updated indication information based on the updated feedback information transmission parameters, and sending the updated indication information to the part or all of the user equipment.

The eNB may send updated feedback information transmission parameters including DL ACK/NACK feedback timing and burst resource indication in a certain subsequent burst resource available for downlink transmission, and is configured to instruct the UE to determine which burst resource corresponds to the DL ACK/NACK feedback information to be fed back in a DL ACK/NACK feedback resource position determined in any manner.

In particular, different DCI fields may be included in the feedback information transmission parameters for different DL ACK/NACK feedback timing indication manners, which may use the same or different DCI signaling formats.

When different DCI signaling formats are used by different DL ACK/NACK feedback timing indication modes, the UE can confirm which DL ACK/NACK feedback timing indication mode is used by the eNB by blindly detecting the different DCI signaling formats. However, when the DL ACK/NACK feedback timing indicates more, this approach may significantly increase DCI signaling blind detection complexity of the UE.

Another method is: and enabling a plurality of different DL ACK/NACK feedback timing indication modes to share the same DCI signaling format. At this point, the UE makes the correct understanding based on the default configuration or RRC signaling indication.

For example: a variety of DL ACK/NACK feedback timing indication modes are defined,

opt 1A (corresponding to mode one): the feedback information transmission parameters comprise subframe offset;

opt 1B (corresponding to mode two): the feedback information transmission parameter comprises burst resource deviation;

opt 1C (corresponding to mode three): the feedback information transmission parameters comprise burst resource offset and subframe offset in the burst resource;

opt 1D (corresponding to mode four): the feedback information transmission parameters comprise burst resource offset and the frequency domain resource position of the uplink subframe;

opt 1E (corresponding to mode five): the feedback information transmission parameters include burst resource offset, subframe offset in the burst resource, and frequency domain resource position of the uplink subframe.

opt 2A: the feedback information transmission parameters comprise subframe offset and burst resource indication;

opt 2B: the feedback information transmission parameters comprise burst resource offset and burst resource indication;

opt 2C: the feedback information transmission parameters comprise burst resource offset, subframe offset in the burst resource and burst resource indication;

opt 2D: the feedback information transmission parameters comprise burst resource offset, the frequency domain resource position of an uplink subframe and burst resource indication;

opt 2E: the feedback information transmission parameters comprise burst resource offset, subframe offset in the burst resource, frequency domain resource position of an uplink subframe, and burst resource indication.

Preferably, one or more of the opt 1A, 1B, 1C, 1D and 1E above are made to share one and the same DCI signaling format, such as DCI signaling format 1; and let one or more of opt 2A, 2B, 2C, 2D, 2E share another same DCI signaling format, such as DCI signaling format 2.

For example, in the absence of any a priori information, the UE understands by default that said DCI signaling format 1 corresponds to opt 1C, or DCI signaling format 2 corresponds to opt 2C. Or, the eNB may instruct the UE to interpret DCI signaling format 1 and DCI signaling format 2 as other DL ACK/NACK feedback timing indication modes through RRC signaling configuration.

For the problem that all or part of UEs cannot compete for the UL transmission opportunity in the indicated specific UL subframe for feeding back DL ACK/NACK due to failure of UL LBT, the UEs are indicated again by the methods of generating and issuing DCI provided in the above scenario, which may specifically be to indicate individual, part or all UEs to feed back DL ACK/NACK information again on new DL ACK/NACK feedback timing;

specifically, the eNB instructs the UE to feed back DL ACK/NACK information again; if the eNB receives 2 valid DL ACK/NACK feedbacks for the same DL scheduling, the UE may choose the following processing method:

when at least two pieces of feedback information aiming at downlink information sent by second user equipment are received, taking the first piece of feedback information in the at least two pieces of feedback information as effective feedback information; and after receiving the first effective DL ACK/NACK feedback, the eNB immediately makes retransmission judgment and ignores other subsequently received ACK/NACK feedback.

When first feedback information aiming at downlink information sent by second user equipment is received, if at least one piece of feedback information aiming at the downlink information is determined to exist, waiting to receive the at least one piece of feedback information; wherein a reception time of the at least one feedback information is later than a reception time of the first feedback information.

The waiting to receive the at least one feedback information further comprises: when the content of second feedback information in the at least one feedback information is the same as that of the first feedback information, if the first feedback information and the second feedback information are both confirmation feedback information, controlling not to perform confirmation retransmission; and if the first feedback information and the second feedback information are both failure feedback information, controlling to confirm retransmission. After receiving the first effective DL ACK/NACK feedback, when determining that the subsequent effective DL ACK/NACK feedback still exists, the eNB waits for receiving the 2 nd effective DL ACK/NACK feedback and then makes retransmission judgment;

when second feedback information in the at least one feedback information is different from the first feedback information in content, performing judgment processing based on the second feedback information; or acquiring third feedback information in the at least one feedback information, and performing decision processing based on the first feedback information, the second feedback information and the third feedback information; the second feedback information is the feedback information with the earliest receiving time in the at least one feedback information. When the 2 times of DL ACK/NACK feedback results are the same, directly judging, namely when the 2 times of feedback results are all ACK, the eNB does not carry out HARQ retransmission; and when the 2 feedback results are all NACK, the eNB carries out HARQ retransmission.

Further, when the 2-time DL ACK/NACK feedback results are different, the 2 nd DL ACK/NACK feedback result is adopted; or, the UE may be required to perform DL ACK/NACK feedback for the 3 rd time, and decide by adopting a majority rule according to the 3-time results; which understanding the UE specifically employs depends on standard protocol specifications, or RRC signaling configuration.

Therefore, by adopting the scheme, the base station can determine the feedback information transmission parameter corresponding to the user equipment, and further indicate the position of the time domain resource of the uplink resource fed back by the user equipment at least through the feedback information transmission parameter. Therefore, the position of the uplink feedback time domain resource of the user equipment is flexibly controlled, and dynamic and flexible frame structure configuration can be guaranteed.

Example II,

An embodiment of the present invention provides an information feedback method, which is applied to a user equipment, and as shown in fig. 2, the method includes:

step 201: receiving downlink control information sent by a base station, and determining a feedback information transmission parameter; the feedback information transmission parameter is used for at least representing a time domain position parameter of feedback information aiming at downlink information;

step 202: and determining the position of an uplink resource aiming at downlink information at least based on a time domain position parameter contained in the feedback information transmission parameter, and sending the feedback information aiming at the downlink information to the base station at the uplink resource.

First, the receiving the downlink control information sent by the base station may include:

listening for at least one downlink control information in all or part of the downlink subframes,

the downlink control information scrambled by the DCI scrambling code special for the user equipment;

the downlink control information scrambled by the common DCI scrambling code of the cell where the user equipment is located;

the downlink control information scrambled by the DCI scrambling code special for the user equipment in the group where the user equipment is located;

and the downlink control information scrambled by the public DCI scrambling code of the burst resource where the user equipment is located.

Specifically, which way or combination of ways the user equipment adopts to monitor the downlink control information may be determined by the user equipment according to a preset rule; and/or determined according to RRC signaling configuration.

In particular, in order to reduce DCI signaling blind detection complexity of the UE, i.e., to avoid the UE blindly detecting common DCI corresponding to a burst resource in each downlink subframe of the burst resource available for downlink transmission, the eNB transmits the common DCI corresponding to the burst resource only in a specific downlink subframe. Thus, the UE only needs to blindly detect the common DCI corresponding to the burst resource in the specific downlink subframe of the burst resource available for downlink transmission. Therefore, the ue determines to listen to the downlink control information in the specific downlink subframe according to a preset rule and/or according to RRC signaling configuration.

Further, the user equipment determines the parameter type contained in the feedback information transmission parameter according to the received RRC signaling, and selects and monitors all or part of the downlink control information types. For example, the transmission parameters may include the types of parameters, such as whether the subframe offset is included, whether the burst offset is included, whether the preset value is included, and the like.

Determining the position of an uplink subframe for transmitting feedback information by any one of the following methods, including:

determining the position of an uplink subframe for transmitting feedback information at least based on the position of the burst resource for receiving downlink information, the subframe offset and a preset first value; ACK/NACK feedback timing is n + K1, where K1 is some constant (e.g., K1 is 0,4, …), or some parameter configured in advance by RRC.

Determining the position of an uplink resource for transmitting feedback information at least based on the position of the last downlink subframe of the burst resource for receiving the downlink information, the subframe offset and a preset second value; ACK/NACK feedback timing is the last DL subframe + K2 of the current burst resource, where K2 is some constant (e.g., K1 is 0,4, …) or some parameter configured in advance by RRC.

And determining the position of the uplink resource for transmitting the feedback information at least based on the position of the first downlink subframe of the burst resource for receiving the downlink information, the subframe offset and a preset third numerical value. ACK/NACK feedback timing is the first DL subframe + K3 of the current burst resource, where K3 is some constant (e.g., K1 is 0,4, …) or some parameter configured in advance by RRC.

Wherein the preset first value (K1), the preset second value (K2), and the preset third value (K3) are predefined or obtained through RRC signaling.

And the user equipment determines the position of the uplink subframe for transmitting the feedback information according to which mode according to the RRC signaling.

Corresponding to the first embodiment where the base station issues the downlink control information to the ue side, the processing method for the ue side to perform demodulation based on the downlink control information includes:

analyzing at least the feedback information transmission parameters to obtain burst resource offset; and at least determining the burst resource which is used for transmitting the feedback information and can be used for uplink transmission based on the burst resource position for receiving the downlink information and the burst resource offset.

When the length of the indication information is one bit, if the burst resource of the downlink control information is monitored to be a downlink burst, determining that the feedback information is sent in a first or second burst resource which can be used for uplink transmission after the current burst resource;

when the length of the indication information is one bit, if the burst resource of the downlink control information is monitored to be uplink and downlink mixed burst, determining to send the feedback information in the current burst resource or the first burst resource which can be used for uplink transmission after the current burst resource;

when the length of the indication information is at least two bits, if the burst resource of the downlink control information is monitored to be a downlink burst, determining to send the feedback information in the (M +1) th burst resource after the current burst resource, where M is an integer greater than or equal to 0, and the burst resource can be used for uplink transmission;

when the length of the indication information is at least two bits, if it is detected that the burst resource of the downlink control information is an uplink and downlink mixed burst, it is determined that the feedback information is sent in an M +1 th burst resource which includes the current burst resource and can be used for uplink transmission, where M is an integer greater than or equal to 0.

It should be understood that the above-mentioned determining the position of the burst resource corresponding to the transmission of the feedback information is the reverse of the determining the burst offset in the first embodiment, and a repeated description is not repeated in this embodiment.

Specifically, determining at least the position of the uplink resource for transmitting the feedback information further includes:

determining the position of the uplink resource of the order and/or the k-last uplink subframe in the burst resource where the uplink transmission for transmitting the feedback information is located, wherein k is an integer.

In addition, the determining the position of the uplink resource for the downlink information based on the time domain position parameter at least included in the feedback information transmission parameter further includes:

analyzing the feedback information transmission parameters to obtain burst resource offset and subframe offset in the burst resource offset; and determining the position of the uplink resource for transmitting the feedback information at least based on the burst resource offset and the subframe offset in the burst resource offset. Or analyzing the feedback information transmission parameters to obtain burst resource offset, subframe offset in the burst resource and frequency domain resource positions; and determining the time domain and the frequency domain resource position of the uplink resource for transmitting the feedback information based on the burst resource offset, the subframe offset in the burst resource and the frequency domain resource position.

The method further includes sending feedback information for the downlink information to the base station at the uplink resource, and the method further includes:

if the demodulation processing for the downlink information is not completed at the time corresponding to the uplink resource, executing one of the following processing:

not sending feedback information aiming at the downlink information;

sending feedback information aiming at the demodulated part of the downlink information to the base station at the uplink resource aiming at the demodulated part of the downlink information;

generating a binding message for the demodulated part of the downlink information, and sending the binding message for the demodulated part of the downlink information to the base station at the uplink resource.

For the overall feedback situation of the burst resource, if the UE does not complete the demodulation operation on all DL subframes in the burst resource to be fed back currently on the UL subframe indicated by the eNB for feeding back the DL ACK/NACK information, the UE selects the following processing method:

on the UL subframe, the UE does not perform feedback;

on the UL subframe, the UE only feeds back ACK/NACK information of the DL subframe which completes the demodulation operation;

if the UE is allowed to perform the ACK/NACK bundling operation, the UE performs the ACK/NACK bundling operation only on the ACK/NACK information of the DL sub-frame which has completed the demodulation operation, and feeds back the ACK/NACK bundling result. At this time, it is required that the eNB should be able to understand which DL subframes the UE performs ACK/NACK bundling operation. The ACK/NACK bundling operation refers to that the UE performs logic AND operation on a plurality of pieces of ACK/NACK information, namely the UE feeds back the ACK only if and only if all the pieces of ACK/NACK information are ACK; otherwise, the UE feeds back NACK;

if the UE is allowed to perform ACK/NACK bundling operation, the UE directly feeds back NACK on the UL subframe.

The following describes the burst resource in this embodiment with reference to fig. 3. Burst resource (burst) refers to a set of consecutive subframes. In fig. 3, the burst resources are indicated by dashed line boxes, where the first, second, and fifth burst resources are uplink and downlink mixed bursts, and the third, and fourth burst resources are downlink bursts.

Example III,

An embodiment of the present invention provides a base station, as shown in fig. 4, where the base station includes:

a processing unit 41, configured to determine a feedback information transmission parameter of at least one user equipment; the feedback information transmission parameter is used for at least representing a time domain position parameter of feedback information aiming at downlink information;

an information sending unit 42, configured to generate downlink control information for the at least one ue based on the feedback information transmission parameter, and send the downlink control information to the at least one ue.

The specific functions of the processing unit and the information sending unit provided in this embodiment correspond to the method of the first embodiment.

scene one,

The processing unit is used for determining a feedback information transmission parameter of the first user equipment;

correspondingly, the information sending unit is configured to add the feedback information transmission parameter to the first downlink control information corresponding to the first user equipment.

Scene two,

Scene three,

The eNB indicates the specific DL ACK/NACK feedback timing of the group UE to the specific group UE scheduled in the DL subframe through the group UE specific DCI scrambled by the specific group RNTI in the specific DL subframe; obviously, one DCI signaling indicates multiple UEs in the same DL subframe.

Scene four,

Scene five,

in a first way,

And a processing unit, configured to determine a subframe offset corresponding to at least one ue, and use the subframe offset as the feedback information transmission parameter.

For example, cross burst indicates that the field takes up only 1 bit.

The third method,

Determining a burst resource offset corresponding to at least one user equipment and a subframe offset in the burst resource, and using the burst resource offset and the subframe offset in the burst resource as the feedback information transmission parameter. That is, the DL ACK/NACK feedback timing DCI signaling contains both cross burst indication and subframe offset k. The UE selects to feed back DL ACK/NACK information in the several burst resources which are available for uplink transmission and are next to the current burst resources according to cross burst indication; further, the UE selects which UL subframe to feed back DL ACK/NACK information in the selected burst resource according to the indicated subframe offset k. A specific ACK/NACK feedback timing is the (K + K4) th UL subframe in the order of the selected burst resource, where K4 is a certain constant (e.g., K4 is 0,1, …), or a certain parameter configured in advance by the RRC; ACK/NACK feedback timing is selected as the K + K5 UL subframes of the last of the UL bursts, where K5 is a certain constant (e.g., K5 is 0,1, …), or a certain parameter configured in advance by RRC; which understanding the UE specifically employs depends on standard protocol specifications, or RRC signaling configuration.

The fourth way,

And determining the burst resource offset corresponding to at least one user equipment and the frequency domain resource position of the uplink subframe, and taking the burst resource offset and the frequency domain resource position of the uplink subframe as the feedback information transmission parameters. The DL ACK/NACK feedback timing DCI signaling contains both the burst resource indication and the frequency domain resource range index used in the subframe: it is considered that when cross-burst resource feedback is supported, multiple DL subframes in multiple burst resources may be mapped into the same UL subframe. To simplify the frequency domain resource mapping method of DL ACK/NACK feedback information, the entire bandwidth of the UL subframe may be divided into several frequency domain resource usage ranges and indicated with a frequency domain resource range index. At this time, the eNB can map the ACK/NACK feedback information of different burst resources into different frequency domain resource ranges, and at this time, the UE only needs to determine the frequency domain position of the feedback ACK/NACK information in the configured frequency domain resource range through a display or implicit rule;

The fifth way,

And informing the user equipment of the parameter types contained in the feedback information transmission parameters in the downlink control information through a resource configuration control (RRC) signaling. The DL ACK/NACK feedback timing DCI signaling may further include a burst resource indication, which is used to indicate the UE to feed back DL ACK/NACK information corresponding to which burst resource at a DL ACK/NACK feedback resource position determined in any manner.

Further, in view of the UL LBT failure problem, if all or some UEs in 1 or more DL bursts fail to contend for a UL transmission opportunity in the indicated specific UL subframe for feeding back DL ACK/NACK due to the UL LBT failure, the following processing is performed:

The processing unit of the eNB may be configured to send updated feedback information transmission parameters in a certain subsequent burst resource that is available for downlink transmission, where the updated feedback information transmission parameters include DL ACK/NACK feedback timing and a burst resource indication, and are used to instruct the UE to determine, at a DL ACK/NACK feedback resource position determined in any manner, which burst resource corresponds to the DL ACK/NACK information to be fed back.

Example four,

An embodiment of the present invention provides a user equipment, as shown in fig. 5, where the user equipment includes:

a receiving unit 51, configured to receive downlink control information sent by a base station, and determine a feedback information transmission parameter; the feedback information transmission parameter is used for at least representing a time domain position parameter of feedback information aiming at downlink information;

a processing unit 52, configured to determine, based on at least a time domain position parameter included in the feedback information transmission parameter, a position of an uplink resource for downlink information;

a sending unit 53, configured to send feedback information for the downlink information to the base station at the uplink resource.

First, the receiving unit 51 is configured to listen to at least one of the following downlink control information in all or part of downlink subframes:

Specifically, which way the user equipment performs frame listening of the downlink control information is determined by the user equipment according to a preset rule; and/or, determining to listen to the downlink control information in the specific downlink subframe according to the RRC signaling configuration.

The traditional problem of DL ACK/NACK feedback timing and DL processing delay is as follows:

note that the UE needs a certain processing time to demodulate the DL data. In the conventional LTE system, the DL data demodulation time is 4ms at most; and as the LTE technology evolves or in the 5G technology, the DL data demodulation time may be further reduced.

not sending feedback information aiming at the downlink information;

on the UL subframe, the UE does not perform feedback;

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An information feedback method applied to a base station, the method comprising:

determining a feedback information transmission parameter of at least one user equipment; the feedback information transmission parameter is used for at least representing a time domain position parameter of feedback information aiming at downlink information on an unlicensed spectrum on the unlicensed spectrum; the feedback information transmission parameter includes at least one of: subframe offset, burst resource offset, subframe offset in burst resource; the burst resource represents a string of continuous subframes which can be transmitted after Listen Before Talk (LBT) on an unlicensed spectrum is successful;

generating downlink control information for the at least one user equipment based on the feedback information transmission parameters, and sending the downlink control information to the at least one user equipment; wherein,

the feedback information transmission parameter satisfies one of:

the subframe offset contained in the feedback information transmission parameter is used for determining the position of an uplink subframe for transmitting the feedback information by the user equipment at least based on the position of the burst resource for receiving the downlink information, the subframe offset and a preset first numerical value;

the subframe offset contained in the feedback information transmission parameter is used for the user equipment to determine the position of the uplink resource for transmitting the feedback information at least based on the position of the last downlink subframe of the burst resource for receiving the downlink information, the subframe offset and a preset second value;

the subframe offset contained in the feedback information transmission parameter is used for the user equipment to determine the position of the uplink resource for transmitting the feedback information at least based on the position of the first downlink subframe of the burst resource for receiving the downlink information, the subframe offset and a preset third numerical value;

wherein, the preset first value, the preset second value and the preset third value are specified in advance or obtained through a resource configuration control RRC signaling;

or,

the burst resource offset included in the feedback information transmission parameter is used for the user equipment to at least determine the burst resource used for transmitting the feedback information based on the burst resource position for receiving the downlink information and the burst resource offset;

or,

the feedback information transmission parameter satisfies one of:

the burst resource offset and the subframe offset in the burst resource offset included in the feedback information transmission parameter are used for the user equipment to determine the position of the uplink resource for transmitting the feedback information at least based on the burst resource offset and the subframe offset in the burst resource offset;

the burst resource offset, the subframe offset in the burst resource and the frequency domain resource position contained in the feedback information transmission parameter are used for the user equipment to determine the time domain and the frequency domain resource position of the uplink resource for transmitting the feedback information.

2. The method of claim 1, wherein determining the feedback information transmission parameter of at least one user equipment comprises one of:

selecting at least one user equipment scheduled in a first downlink subframe, and determining a feedback information transmission parameter of the at least one user equipment;

selecting a first group of user equipment scheduled in a second downlink subframe, wherein the first group of user equipment comprises at least one user equipment; determining a feedback information transmission parameter of at least one user equipment of the first set of user equipments;

selecting a first burst resource for downlink transmission, scheduling at least one user equipment in the first burst resource, and determining a feedback information transmission parameter of the at least one user equipment;

selecting a second group of user equipment scheduled in a second burst resource for downlink transmission, wherein the second group of user equipment comprises at least one user equipment; determining a feedback information transmission parameter for at least one user equipment of the second set of user equipments.

3. The method of claim 2, wherein generating downlink control information for the at least one UE based on the feedback information transmission parameters comprises one of:

corresponding to the feedback information transmission parameter of the first user equipment, adding the feedback information transmission parameter to first downlink control information corresponding to the first user equipment;

corresponding to at least one user equipment scheduled in a selected first downlink subframe, determining a feedback information transmission parameter of the at least one user equipment, and adding the feedback information transmission parameter of the at least one user equipment to second downlink control information corresponding to the first downlink subframe;

correspondingly selecting a first group of user equipment scheduled in a second downlink subframe, wherein the first group of user equipment comprises at least one user equipment; determining a feedback information transmission parameter of at least one user equipment of the first group of user equipment, and adding the feedback information transmission parameter of the at least one user equipment of the first group of user equipment to third downlink control information corresponding to the first group of user equipment;

corresponding to a first burst resource selected for downlink transmission, at least one user equipment scheduled in the first burst resource determines a feedback information transmission parameter of the at least one user equipment, and adds the feedback information transmission parameter of the at least one user equipment to fourth downlink control information corresponding to the first burst resource for downlink transmission;

a second group of user equipment corresponding to scheduling in a second burst resource selected for downlink transmission, wherein the second group of user equipment comprises at least one user equipment; and determining a feedback information transmission parameter of at least one user equipment of the second group of user equipment, and adding the feedback information transmission parameter of the at least one user equipment of the second group of user equipment to fifth downlink control information corresponding to the second group of user equipment.

4. The method of claim 3, further comprising:

according to a preset rule, sending the downlink control information containing at least one user equipment feedback information transmission parameter in a specific downlink subframe in a first burst resource or a second burst resource used for downlink transmission;

and/or the presence of a gas in the gas,

and sending the downlink control information containing at least one user equipment feedback information transmission parameter in a specific downlink subframe in a first burst resource or a second burst resource for downlink transmission, and informing the user equipment of the configuration information corresponding to the specific downlink subframe through a resource configuration control (RRC) signaling.

5. The method of claim 2, further comprising:

6. The method of claim 2, further comprising:

and determining a burst resource offset corresponding to at least one user equipment, and using the burst resource offset as the feedback information transmission parameter.

7. The method of claim 6, wherein determining the burst resource offset corresponding to the at least one UE comprises at least one of:

when the length of the burst resource offset indication information is one bit, indicating the user equipment to select a first or a second burst resource which contains the burst resource currently sending the downlink control information and can be used for uplink transmission to send feedback information;

8. The method of claim 2, wherein the method comprises one of:

determining a burst resource offset corresponding to at least one user equipment and a subframe offset in a burst resource, and using the burst resource offset and the subframe offset in the burst resource as the feedback information transmission parameters;

determining a burst resource offset corresponding to at least one user equipment and a frequency domain resource position of an uplink subframe, and using the burst resource offset and the frequency domain resource position of the uplink subframe as the feedback information transmission parameters;

determining a burst resource offset, a subframe offset in the burst resource and a frequency domain resource position of an uplink subframe corresponding to at least one user equipment, and taking the burst resource offset, the subframe offset in the burst resource and the frequency domain resource position of the uplink subframe as the feedback information transmission parameters.

9. The method according to any one of claims 6-8, further comprising:

and informing the user equipment of the parameter type contained in the feedback information transmission parameter in the downlink control information through resource configuration control (RRC) signaling.

10. The method according to any one of claims 6-8, further comprising:

and adding the indication information of the burst resource corresponding to the feedback information of the downlink information to the feedback information transmission parameter.

11. The method of claim 1, further comprising:

when the feedback of part or all of the user equipment in at least one user equipment fails, generating updated feedback information transmission parameters aiming at the part or all of the user equipment;

and generating updated indication information based on the updated feedback information transmission parameters, and sending the updated indication information to the part or all of the user equipment.

12. The method of claim 1, further comprising:

when at least two pieces of feedback information aiming at downlink information sent by second user equipment are received, taking the first piece of feedback information in the at least two pieces of feedback information as effective feedback information;

or,

13. The method of claim 12, wherein waiting to receive the at least one feedback information further comprises:

when the content of second feedback information in the at least one feedback information is the same as that of the first feedback information, if the first feedback information and the second feedback information are both confirmation feedback information, controlling not to perform confirmation retransmission; if the first feedback information and the second feedback information are both failure feedback information, controlling to confirm retransmission;

when second feedback information in the at least one feedback information is different from the first feedback information in content, performing judgment processing based on the second feedback information; or acquiring third feedback information in the at least one feedback information, and performing decision processing based on the first feedback information, the second feedback information and the third feedback information;

the first feedback information is the feedback information with the earliest receiving time in the at least one feedback information.

14. An information feedback method applied to User Equipment (UE), the method comprising:

receiving downlink control information sent by a base station, and determining a feedback information transmission parameter; the feedback information transmission parameter is used for at least representing a time domain position parameter of feedback information aiming at downlink information on an unlicensed spectrum on the unlicensed spectrum; the feedback information transmission parameter includes at least one of: subframe offset, burst resource offset, subframe offset in burst resource; the burst resource represents a string of continuous subframes which can be transmitted after Listen Before Talk (LBT) on an unlicensed spectrum is successful;

determining the position of an uplink resource aiming at downlink information at least based on a time domain position parameter contained in the feedback information transmission parameter, and sending the feedback information aiming at the downlink information to the base station at the uplink resource; wherein,

the determining, based on a time domain position parameter at least included in the feedback information transmission parameter, a position of an uplink resource for downlink information includes one of:

determining the position of an uplink subframe for transmitting feedback information at least based on the position of the burst resource for receiving downlink information, the subframe offset and a preset first value;

determining the position of an uplink resource for transmitting feedback information at least based on the position of the last downlink subframe of the burst resource for receiving the downlink information, the subframe offset and a preset second value;

determining the position of an uplink resource for transmitting feedback information at least based on the position of a first downlink subframe of a burst resource for receiving downlink information, subframe offset and a preset third numerical value;

wherein the preset first value, the preset second value and the preset third value are specified in advance or obtained through RRC signaling;

or,

the determining the position of the uplink resource for the downlink information based on the time domain position parameter at least included in the feedback information transmission parameter includes:

analyzing at least the feedback information transmission parameters to obtain burst resource offset;

at least determining a burst resource for transmitting feedback information based on a burst resource position for receiving downlink information and the burst resource offset;

or,

the method includes determining a location of an uplink resource for downlink information based on a time domain location parameter at least included in the feedback information transmission parameter, and includes one of:

analyzing the feedback information transmission parameters to obtain burst resource offset and subframe offset in the burst resource offset; determining a position of an uplink resource for transmitting feedback information at least based on the burst resource offset and a subframe offset in the burst resource offset;

analyzing the feedback information transmission parameters to obtain burst resource offset, subframe offset in the burst resource and frequency domain resource positions; and determining the time domain and the frequency domain resource position of the uplink resource for transmitting the feedback information based on the burst resource offset, the subframe offset in the burst resource and the frequency domain resource position.

15. The method of claim 14, wherein the receiving downlink control information from a base station further comprises:

monitoring at least one of the following downlink control information in all or part of downlink subframes:

16. The method of claim 15,

and the user equipment determines to monitor the downlink control information in the specific downlink subframe according to a preset rule and/or according to RRC signaling configuration.

17. The method of claim 15,

and the user equipment determines the parameter types contained in the feedback information transmission parameters according to the received RRC signaling, and selects and monitors all or part of the downlink control information types.

18. The method of claim 14, further comprising:

19. The method of claim 18, wherein determining at least a location of an uplink resource for transmitting feedback information further comprises:

20. The method of any one of claims 14-19, further comprising:

analyzing the feedback information transmission parameters to obtain indication information of burst resources corresponding to the feedback information of the downlink information;

and determining the position of an uplink resource corresponding to the feedback information aiming at the downlink information according to the indication information, and sending the feedback information aiming at the downlink information to the base station at the determined position of the uplink resource.

21. The method of claim 14, wherein the uplink resource sends feedback information for the downlink information to the base station, and wherein the method further comprises:

not sending feedback information aiming at the downlink information;

22. A base station, characterized in that the base station comprises:

a processing unit for determining a feedback information transmission parameter of at least one user equipment; the feedback information transmission parameter is used for at least representing a time domain position parameter of feedback information aiming at downlink information on an unlicensed spectrum on the unlicensed spectrum; the feedback information transmission parameter includes at least one of: subframe offset, burst resource offset, subframe offset in burst resource; the burst resource represents a string of continuous subframes which can be transmitted after Listen Before Talk (LBT) on an unlicensed spectrum is successful;

an information sending unit, configured to generate downlink control information for the at least one ue based on the feedback information transmission parameter, and send the downlink control information to the at least one ue; wherein,

the feedback information transmission parameter satisfies one of:

or,

the feedback information transmission parameter satisfies one of:

23. The base station of claim 22,

a processing unit for performing one of the following processes:

24. The base station of claim 23,

an information transmitting unit configured to perform one of the following processes:

25. The base station of claim 24, wherein the information sending unit is configured to send the downlink control information including at least one ue feedback information transmission parameter in a specific downlink subframe in a first burst resource or a second burst resource used for downlink transmission according to a preset rule;

and/or the presence of a gas in the gas,

an information sending unit, configured to send, in a specific downlink subframe in a first burst resource or a second burst resource used for downlink transmission, the downlink control information including at least one ue feedback information transmission parameter, and notify, through a resource configuration control RRC signaling, configuration information corresponding to the specific downlink subframe to a ue.

26. The base station according to claim 23, wherein the processing unit is configured to determine a subframe offset corresponding to at least one ue, and use the subframe offset as the feedback information transmission parameter.

27. The base station of claim 23, wherein the processing unit is configured to determine a burst resource offset corresponding to at least one ue, and use the burst resource offset as the feedback information transmission parameter;

the processing unit is specifically configured to determine a burst resource offset corresponding to the at least one ue, where the burst resource offset includes at least one of:

28. The base station of claim 23,

the processing unit is configured to perform one of:

29. The base station of claim 26, wherein the processing unit is configured to notify a user equipment of a parameter type included in a feedback information transmission parameter in the downlink control information through RRC signaling.

30. The base station of claim 22, wherein the processing unit is configured to add indication information of a burst resource corresponding to feedback information for downlink information to the feedback information transmission parameter.

31. The base station according to claim 22, wherein the processing unit is configured to generate updated feedback information transmission parameters for some or all of the at least one ue when feedback fails;

and the information sending unit is used for generating updated indication information based on the updated feedback information transmission parameters and sending the updated indication information to the part or all of the user equipment.

32. The base station of claim 22,

the processing unit is configured to, when receiving at least two pieces of feedback information for a piece of downlink information sent by a second user equipment, take a first piece of feedback information of the at least two pieces of feedback information as effective feedback information;

or,

the processing unit is configured to, when receiving first feedback information for downlink information sent by a second user equipment, wait to receive at least one piece of feedback information if it is determined that the feedback information for the downlink information still exists; wherein a reception time of the at least one feedback information is later than a reception time of the first feedback information.

33. The base station of claim 32,

the processing unit is configured to, when a second feedback information of the at least one feedback information is the same as the first feedback information in content, control not to perform acknowledgment retransmission if the first feedback information and the second feedback information are both acknowledgment feedback information; if the first feedback information and the second feedback information are both failure feedback information, controlling to confirm retransmission;

34. A user equipment, the user equipment comprising:

a receiving unit, configured to receive downlink control information sent by a base station, and determine a feedback information transmission parameter; the feedback information transmission parameter is used for at least representing a time domain position parameter of feedback information aiming at downlink information on an unlicensed spectrum on the unlicensed spectrum; the feedback information transmission parameter includes at least one of: subframe offset, burst resource offset, subframe offset in burst resource; the burst resource represents a string of continuous subframes which can be transmitted after Listen Before Talk (LBT) is successfully carried out on the unauthorized frequency band;

a sending unit, configured to send feedback information for the downlink information to the base station at the uplink resource; wherein,

the processing unit is used for analyzing at least the feedback information transmission parameters to obtain subframe offset;

or,

the processing unit is configured to at least analyze the feedback information transmission parameter to obtain a burst resource offset; at least determining a burst resource for transmitting feedback information based on a burst resource position for receiving downlink information and the burst resource offset;

or,

the processing unit is used for analyzing the feedback information transmission parameters to obtain burst resource offset and subframe offset in the burst resource offset; determining a position of an uplink resource for transmitting feedback information at least based on the burst resource offset and a subframe offset in the burst resource offset; or analyzing the feedback information transmission parameters to obtain burst resource offset, subframe offset in the burst resource and frequency domain resource positions; and determining the time domain and the frequency domain resource position of the uplink resource for transmitting the feedback information based on the burst resource offset, the subframe offset in the burst resource and the frequency domain resource position.

35. The UE of claim 34, wherein the receiving unit is configured to perform one of the following:

the downlink control information scrambled by the special DCI scrambling code;

the downlink control information scrambled by the public DCI scrambling code of the cell is located;

the downlink control information scrambled by the DCI scrambling code is special for the user equipment in the group;

and scrambling the scrambled downlink control information by the public DCI of the burst resource.

36. The user equipment of claim 35,

the receiving unit is configured to determine to monitor the downlink control information in the specific downlink subframe according to a preset rule and/or according to RRC signaling configuration.

37. The user equipment of claim 35,

the receiving unit is configured to determine a parameter type included in the feedback information transmission parameter according to the received RRC signaling, and select to monitor all or part of the downlink control information types.

38. The user equipment of claim 35,

the processing unit is configured to, when the length of the indication information is one bit, determine that the feedback information is sent in a first or second burst resource that can be used for uplink transmission after a current burst resource if it is detected that the burst resource of the downlink control information is a downlink burst;

39. The ue of claim 34, wherein the processing unit is configured to, if the demodulation processing for the downlink information is not completed at the time corresponding to the uplink resource, perform one of the following processing:

not sending feedback information aiming at the downlink information;

40. A computer-readable storage medium, characterized in that it stores a computer program which, when executed, is capable of carrying out the steps of the method according to any one of claims 1 to 13 or the steps of the method according to any one of claims 14 to 21.