CN107241802B - Method and device for sending uplink control information UCI - Google Patents

Abstract

The present invention provides a method and device for sending uplink control information UCI, wherein the method includes: determining a resource for sending UCI, wherein the resource includes more than three clusters, or the resource includes one or more An interleaving unit, the interleaving unit is composed of more than three discrete resource blocks RB; the above-mentioned UCI is mapped to the above-mentioned resource, and the UCI is sent on the above-mentioned resource by using an unlicensed carrier. The present invention solves the problems in the related art that cannot satisfy regional control and bandwidth occupied by unlicensed carriers when UCI information is sent on unlicensed carriers, and then ensures that 80% of unlicensed carriers are occupied when sending UCI Bandwidth requirements, and the effect of PSD regulatory requirements.

Description

Method and device for sending uplink control information UCI

technical field

The present invention relates to the communication field, in particular to a method and device for sending uplink control information UCI.

Background technique

It is an important content in the LTE evolution process that the Long-Term Evolution (LTE for short) system uses an unlicensed carrier to work. This technology will enable the LTE system to use existing unlicensed carriers, greatly enhance the potential spectrum resources of the LTE system, and enable the LTE system to obtain lower spectrum costs.

There are two main modes for LTE to use unlicensed, one is Carrier Aggregation (CA for short), unlicensed is used as an auxiliary component carrier access, and the other is Dual Connectivity (DC for short). access mode. In these two working modes, it may be necessary to send a physical uplink control channel (Physical Uplink Control Channel, PUCCH for short) on the unlicensed carrier.

The PUCCH of LTE in the related art supports multiple transmission formats, including Format 1/1a/1b/2/2a/2b/3/5 which occupies only one Resource Block (RB) at a certain moment and occupies continuous Format 4 of 1 to 8 RBs.

Wherein, the modulation mode of each format and the maximum number of information bits that can be carried are shown in Table 1.

Table 1

The uplink control signaling combinations supported by each format are:

For Normal CP (general cyclic prefix), for format 1a, only 1-bit HARQ-ACK or 1-bit combination of HARQ-ACK and SR can be sent;

Format 1b can be used to send a combination of 2-bit HARQ-ACK or 2-bit Hybrid Automatic Repeat Request-Acknowledgment (HARQ-ACK for short) and Scheduling Request (SR for short);

When channel selection is enabled, Format 1b carries up to 4 bits of HARQ-ACK feedback: when not multiplexed with HARQ-ACK, Format 2 is used to send Channel Quality Indication (CQI for short)/precoding Matrix indicator (Precoding Matrix Indicator, referred to as PMI) or rank indicator (RankIndicator, referred to as RI);

Format 2a is used to send CQI/PMI or RI multiplexed with 1-bit HARQ-ACK;

Format 2b is used to send CQI/PMI or RI multiplexed with 2-bit HARQ-ACK;

format 2 is used to send CQI/PMI or RI multiplexed with HARQ-ACK;

Format 3 is used to transmit a maximum of 10-bit HARQ-ACK in a Frequency Division Duplex (FDD) system or a maximum of 20-bit HARQ-ACK in a TDD system;

Format 4 is used to send HARQ-ACK and/or periodic channel state information (ChannelState Information, CSI for short) of multiple carriers;

Format 5 is used to send HARQ-ACK and/or periodic CSI of multiple carriers.

According to the requirements of national and regional regulations, the terminal needs to listen before talk (abbreviated as LBT) before transmitting uplink data (such as Uplink Control Information (UCI for short)) on an unlicensed carrier It is called clear channel assessment (Clear Channel Assessment, referred to as CCA)) and the transmission data needs to meet the regulatory requirements of 80% occupied bandwidth and power spectral density (Power Specturm Density, referred to as PSD), but the current PUCCH structure of LTE only accounts for One RB at the bandwidth boundary, or several consecutive RBs, cannot meet the regulatory requirements.

Aiming at the problems existing in the related art that UCI information transmission on an unlicensed carrier cannot satisfy regional control and bandwidth occupied by an unlicensed carrier, no effective solution has been proposed so far.

Contents of the invention

The present invention provides a UCI sending method and device to at least solve the problems in the related art that when UCI information is sent on an unlicensed carrier, it cannot satisfy regional control and the bandwidth occupied by the unlicensed carrier.

According to one aspect of the present invention, a method for sending uplink control information UCI is provided, including: determining resources for sending UCI, wherein the resources include more than three clusters, or the resources include one or more an interleaving unit, the interleaving unit is composed of more than three discrete resource blocks RB; the UCI is mapped to the resource, and the UCI is sent on the resource by using an unlicensed carrier.

Optionally, determining the resource for sending the UCI includes at least one of the following: determining the resource for sending the UCI through received high-layer signaling from the base station; determining the resource for sending the UCI through the determined physical downlink control channel PDCCH Determine the resource used to send the UCI at the location of the location; determine the resource used to send the UCI according to the received downlink control information from the base station.

Optionally, determining the resources used to send UCI includes: determining the number of one or more interleaving units and a resource index in each RB in the interleaving unit; determining the resource index in each RB according to the number and the resource index said resources.

Optionally, the resources include frequency domain resources and code domain resources.

Optionally, the physical uplink control channel PUCCH format of the RB includes one of the following: Format1, Format1a, Format1b, Format2, Format2a, Format2b, Format3, Format4, Format5, wherein each resource block RB in the interleaving unit adopts The PUCCH formats are all the same, or the physical uplink control channel PUCCH format used by some RBs in the interleaving unit is the first format, and the PUCCH format used by the remaining RBs is the second format.

Optionally, the method further includes: determining the PUCCH format of the RB by at least one of the following methods: determining the PUCCH format of the RB by means indicated by the base station, wherein the PUCCH format of the RB is determined by the base station according to The number of the unlicensed carriers is determined; the PUCCH format of the RB is determined according to the number of bits of the UCI.

Optionally, one interleaving unit includes p RBs, and there are m RBs between the p RBs, where p is an integer greater than or equal to 3, m is a positive integer, and the values of p and m are based on the system bandwidth Sure.

Optionally, all RBs in an interleaving unit use the same code sequence when sending the UCI.

Optionally, the resource includes a physical uplink control channel PUCCH and/or a physical uplink shared channel PUSCH, wherein the subframe corresponding to the PUCCH includes a demodulation reference signal DMRS and symbols occupied by the UCI, and the subframe The structure includes at least one of the following: one subframe contains two DMRS symbols, and the two DMRS symbols are symbols 3 and 10 respectively; one said subframe contains four DMRS symbols, and the four DMRS symbols are respectively for symbols 1, 5, 8 and 12.

Optionally, the RB includes a demodulation reference signal DMRS, and the number and positions of the DMRS included in the RB are determined by the format of the physical uplink control channel PUCCH of the RB.

Optionally, the UCI includes at least one of the following: confirmation/non-acknowledgement ACK/NACK information of multiple processes of one or more carriers; confirmation/non-acknowledgement ACK/NACK information of multiple subframes of one or more carriers ; Periodic channel state information CSI of one or more carriers; aperiodic channel state information CSI of one or more carriers; buffer status report BSR; bits.

Optionally, when the UCI includes acknowledgment/non-acknowledgement ACK/NACK information corresponding to the physical downlink shared channel PDSCH of multiple subframes, and the UCI is sent through one sending subframe in the resource, the The timing relationship between the sending subframe and the plurality of subframes is determined by at least one of the following methods: the n+kth subframe sends ACK/NACK information of all PDSCH subframes corresponding to the terminal in the last downlink burst burst, where n is a positive integer, k is a positive integer, and the nth subframe is the last PDSCH subframe in the last downlink burst; the uplink subframe in the N+K transmission opportunity TXOP sends the downlink burst in the Nth TXOP ACK/NACK information of all PDSCH subframes corresponding to the terminal in the burst, where N is a positive integer and K is a positive integer.

Optionally, the k is 4; and/or, the K is 1.

Optionally, mapping the UCI to the resource includes at least one of the following: dividing the UCI into two or more groups; performing group mapping on the resource according to the groups divided by the UCI, wherein the Group mapping includes at least one of the following: one group of UCIs is mapped to more than two RBs, different groups of UCIs are mapped to different RBs, and different groups of UCIs are mapped to RBs of different physical uplink control channel PUCCH formats ; process the UCI code modulation into modulation symbols; map the modulation symbols to multiple RBs of a single-carrier orthogonal frequency division multiplexing SC-OFDM symbol included in the resources by multiplying the modulation symbols by a predetermined sequence, Wherein, the predetermined sequence is a different sequence corresponding to a plurality of RBs of the SC-OFDM symbol; or, the modulation symbol is multiplied by a time domain spreading sequence and a ZC sequence of a predetermined length Mapping to a plurality of single-carrier orthogonal frequency division multiplexing SC-OFDM symbols included in the resource, wherein the modulation symbol only occupies one RB on each SC-OFDM symbol; mapping the UCI to the Resources include two or more discrete RBs or resource elements RE within the system bandwidth of m single-carrier orthogonal frequency division multiple access SC-OFDMA symbols, where m is a positive integer less than or equal to 4; the UCI is mapped to the last s symbols of the special subframe, or mapped to t symbols after a predetermined microsecond after the downlink burst, where the values of s and t are both positive integers less than 7.

Optionally, when the number of bits of the UCI is less than a predetermined value, mapping the UCI to the resource, and using an unlicensed carrier to send the UCI on the resource includes: repeatedly mapping the UCI to On multiple RBs in the resource, and use the unlicensed carrier resource to send the UCI on the resource; and/or transfer the UCI to a licensed carrier for sending.

Optionally, the method includes at least one of the following: the resource includes a physical uplink control channel PUCCH and/or a physical uplink shared channel PUSCH, wherein the PUCCH and the PUSCH are frequency-divided by different interleaving units; the The resources include the physical uplink control channel PUCCH. When the PUCCH and the sounding reference signal SRS are transmitted in the same subframe, the UCI is sent by discarding the SRS or by deleting the corresponding frequency domain of the symbol occupied by the SRS The UCI is sent by way of location.

According to another aspect of the present invention, a method for sending uplink control information UCI is provided, including: determining resources for sending UCI, wherein the resources include more than three clusters, or the resources include one or more An interleaving unit, where the interleaving unit is composed of more than three discrete resource blocks RB; notifying the terminal of the determined resources, where the resources are used by the terminal to send the UCI.

Optionally, notifying the terminal of the determined resource includes: notifying the terminal of the determined resource through high layer signaling; notifying the terminal of the determined resource through downlink control information.

Optionally, notifying the terminal of the determined resource includes: when the physical uplink control channel PUCCH format of each RB included in the interleaving unit is the same, allocating the same resource to each RB in the interleaving unit. and notify the terminal of the resource index of the first RB in the interleaving unit; and/or, when the physical uplink control channel PUCCH formats of the RBs contained in the interleaving unit are different, the The resource index of each RB in the interleaving unit is notified to the terminal.

Optionally, when the PUCCH format of each RB included in the interleaving unit is the same and the resource index allocated to each RB in the interleaving unit is the same, the cycle of the frequency domain spreading sequence of each RB The shift is the same as that of the first RB, or each RB is shifted by a cyclic shift of the same size, wherein the cyclic shift is notified to the terminal through the resource; and/or, when the When the PUCCH format of the RBs included in the interleaving unit includes a time-domain spreading code, the time-domain spreading code is notified to the terminal through the resource, where the time-domain spreading codes included in the RBs of the same PUCCH format are the same.

Optionally, when the PUCCH format of each RB included in the interleaving unit is different or the resource index of each RB is different, the cyclic shift and/or time domain spreading code of the frequency domain spreading sequence of the RB Determined according to the resource index of the RB.

Optionally, the resources include frequency domain resources and code domain resources.

Optionally, after determining the resource for sending the UCI, the method further includes: notifying the terminal of the physical uplink control channel PUCCH format of the RB.

Optionally, the PUCCH format of the RB includes one of the following: Format1, Format1a, Format1b, Format2, Format2a, Format2b, Format3, Format4, Format5, wherein the PUCCH format used by each resource block RB in the interleaving unit is are the same, or the physical uplink control channel PUCCH format adopted by some RBs in the interleaving unit is the first format, and the PUCCH format adopted by the remaining RBs is the second format.

Optionally, one interleaving unit includes p RBs, and there are m RBs between the p RBs, where p is an integer greater than or equal to 3, m is a positive integer, and the values of p and m are based on the system bandwidth Sure.

Optionally, the resource includes a physical uplink control channel PUCCH and/or a physical uplink shared channel PUSCH, wherein the subframe corresponding to the PUCCH includes a demodulation reference signal DMRS and symbols occupied by the UCI, and the subframe The structure includes at least one of the following: one subframe contains two DMRS symbols, and the two DMRS symbols are symbols 3 and 10 respectively; one said subframe contains four DMRS symbols, and the four DMRS symbols are respectively for symbols 1, 5, 8 and 12.

Optionally, the RB includes a demodulation reference signal DMRS, and the number and positions of the DMRS included in the RB are determined by the format of the physical uplink control channel PUCCH of the RB.

Optionally, the UCI includes at least one of the following: confirmation/non-acknowledgement ACK/NACK information of multiple processes of one or more carriers; confirmation/non-acknowledgement ACK/NACK information of multiple subframes of one or more carriers ; Periodic channel state information CSI of one or more carriers; aperiodic channel state information CSI of one or more carriers; buffer status report BSR; bits.

Optionally, when the UCI includes acknowledgment/non-acknowledgement ACK/NACK information corresponding to the physical downlink shared channel PDSCH of multiple subframes, and the UCI is sent through one sending subframe in the resource, the The timing relationship between the sending subframe and the plurality of subframes is determined by at least one of the following methods: the n+kth subframe sends ACK/NACK information of all PDSCH subframes corresponding to the terminal in the last downlink burst burst, where n is a positive integer, k is a positive integer, and the nth subframe is the last PDSCH subframe in the last downlink burst; the uplink subframe in the N+K transmission opportunity TXOP sends the downlink burst in the Nth TXOP ACK/NACK information of all PDSCH subframes corresponding to the terminal in the burst, where N is a positive integer and K is a positive integer.

Optionally, the k is 4; and/or, the K is 1.

According to another aspect of the present invention, there is provided an apparatus for sending uplink control information UCI, including: a first determining module, configured to determine resources for sending UCI, wherein the resources include more than three clusters, or , the resource includes one or more interleaving units, and the interleaving unit is composed of more than three discrete resource blocks RB; a processing module is used to map the UCI to the resource, and use an unlicensed carrier in the Send the UCI on the resource.

According to another aspect of the present invention, there is provided an apparatus for sending uplink control information UCI, including: a second determining module, configured to determine resources for sending UCI, wherein the resources include more than three clusters, or, all The resource includes one or more interleaving units, the interleaving unit is composed of more than three discrete resource blocks RB; the notification module is configured to notify the terminal of the determined resource, wherein the resource is used for the terminal Send the UCI.

According to the present invention, it can be known that the resource used for sending UCI includes more than three clusters, or includes one or more interleaving units, and each interleaving unit is composed of more than three discrete resource blocks RB. Therefore, when using the above resources to send UCI, 80% of the bandwidth occupied by unlicensed carriers and the control requirements of PSD can be realized, which solves the problem in the related art that when UCI information is sent on unlicensed carriers, it cannot meet regional control and unlicensed The carrier occupies the bandwidth problem.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

FIG. 1 is a flowchart of a first UCI sending method according to an embodiment of the present invention;

FIG. 2 is a flowchart of a second UCI sending method according to an embodiment of the present invention;

FIG. 3 is a first schematic diagram of a PUCCH channel structure;

FIG. 4 is a schematic diagram of the PUCCH format and structure;

FIG. 5 is a second schematic diagram of a PUCCH channel structure;

FIG. 6 is a schematic diagram of a PUCCH channel structure III;

FIG. 7 is a first schematic diagram of uplink control information transmission;

FIG. 8 is a second schematic diagram of uplink control information transmission;

FIG. 9 is a first schematic diagram of the timing relationship between ACK/NACK and PDSCH;

FIG. 10 is a second schematic diagram of the timing relationship between ACK/NACK and PDSCH;

FIG. 11 is a first schematic diagram of the position of the PUCCH in a subframe;

FIG. 12 is a second schematic diagram of the position of the PUCCH in the subframe;

FIG. 13 is a third schematic diagram of the position of the PUCCH in the subframe;

FIG. 14 is a schematic diagram 4 of the position of the PUCCH in the subframe;

FIG. 15 is a structural block diagram of a first UCI sending device according to an embodiment of the present invention;

Fig. 16 is a structural block diagram of an apparatus for sending a second type of UCI according to an embodiment of the present invention.

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence.

A method for sending UCI is provided in this embodiment. FIG. 1 is a flowchart of a first method for sending UCI according to an embodiment of the present invention. As shown in FIG. 1 , the process includes the following steps:

Step S102, determining resources for sending UCI, wherein the resources include more than three clusters, or the resources include one or more interleaving units, and the interleaving units are composed of more than three discrete resource blocks RB;

Step S104, mapping the UCI to the resource, and sending the UCI on the resource by using an unlicensed carrier.

Wherein, the one performing the above operations may be a terminal.

Through the above steps, the resources used to send UCI include more than three clusters, or include one or more interleaving units, and each interleaving unit is composed of more than three discrete RBs, and the specific number of RBs can be determined according to the system Bandwidth determination, when using the above-mentioned types of resources to send UCI, it can ensure that 80% of the unlicensed carrier occupies the bandwidth when sending UCI, and the PSD control requirements, thus solving the problem of performing UCI on the unlicensed carrier in the related technology When the information is sent, it cannot meet the problems of regional control and unlicensed carriers occupying bandwidth.

In an optional embodiment, determining the resource for sending the UCI includes at least one of the following: determining the resource for sending the UCI by receiving high-level signaling from the base station; determining the location of the physical downlink control channel PDCCH Determine the resource for sending UCI; determine the resource for sending UCI through the received downlink control information from the base station. Wherein, the above-mentioned three ways of determining are only some preferred ways of determining resources. In practical applications, other ways may also be used to determine resources for sending UCI, for example, through negotiation between the base station and the terminal.

In an optional embodiment, determining resources for sending UCI includes: determining numbers of one or more interleaving units and resource indexes in each RB in the interleaving units; and determining resources according to the numbers and resource indexes. In this embodiment, the number of the interleaving unit and the resource index of the RB in the interleaving unit may be notified by the base station, or determined through negotiation between the base station and the terminal, or determined in other ways.

In an optional embodiment, the foregoing resources include frequency domain resources and code domain resources.

In an optional embodiment, the physical uplink control channel PUCCH format of the above-mentioned RB includes one of the following: Format1, Format1a, Format1b, Format2, Format2a, Format2b, Format3, Format4, Format5, wherein each resource block in the interleaving unit The PUCCH formats adopted by the RBs are all the same, or the physical uplink control channel PUCCH format adopted by some RBs in the interleaving unit is the first format, and the PUCCH format adopted by the remaining RBs is the second format. In this embodiment, the PUCCH formats of the multiple RBs in the interleaving unit may be all the same, or all different, or partly the same, and the PUCCH formats of the RBs are consistent with existing PUCCH formats.

In an optional embodiment, the above method further includes: determining the PUCCH format of the RB by at least one of the following methods: determining the PUCCH format of the RB by means indicated by the base station, wherein the PUCCH format of the RB is determined by the base station according to the unlicensed carrier The number is determined; the PUCCH format of the RB is determined according to the above-mentioned UCI bit number.

In an optional embodiment, an interleaving unit includes p RBs, and m RBs are spaced between the p RBs, where p is an integer greater than or equal to 3, m is a positive integer, and the selection of p and m is The value is determined according to the system bandwidth. In this embodiment, when determining the values of p and m, the determination is based on 80% occupied bandwidth.

In an optional embodiment, all RBs in an interleaving unit use the same code sequence when transmitting UCI, and the code sequence is one of multiple code sequences, and the multiple code sequences satisfy the requirement that the same sequence is different The nature of cyclic shift orthogonality, that is, multiple code sequences are formed by the same sequence undergoing different cyclic shifts.

In an optional embodiment, the above resources include a physical uplink control channel PUCCH and/or a physical uplink shared channel PUSCH, wherein the subframe corresponding to the PUCCH includes a demodulation reference signal (De Modulation Reference Signal, DMRS for short) and the The symbols occupied by the UCI, the structure of the subframe includes at least one of the following: one of the above subframes contains two DMRS symbols, and the two DMRS symbols are symbols 3 and 10 respectively; one of the above subframes contains four DMRS symbols, The four DMRS symbols are symbols 1, 5, 8 and 12, respectively.

In an optional embodiment, the above-mentioned RB includes a demodulation reference signal DMRS, and the number and positions of the DMRS included in the RB are determined by the format of the physical uplink control channel PUCCH of the RB.

In an optional embodiment, the UCI includes at least one of the following: Acknowledge/non-Acknowledge (ACK/NACK for short) information of multiple processes of one or more carriers; one or more Confirmation/non-confirmation ACK/NACK information of multiple subframes of the carrier; periodic channel state information (ChannelState Information, CSI for short) of one or more carriers; aperiodic channel state information CSI of one or more carriers; buffer status report (Buffer State Report, abbreviated as BSR); one or more bits used for the base station and the terminal to maintain acknowledgment/non-acknowledgement ACK/NACK reporting synchronization.

In an optional embodiment, when the above-mentioned UCI includes acknowledgment/non-acknowledgement ACK/NACK information corresponding to a Physical Downlink Shared Channel (PDSCH for short) of multiple subframes, and the UCI is sent through one of the resources When a subframe is sent, the timing relationship between the above-mentioned sending subframe and multiple subframes is determined by at least one of the following methods: the n+kth subframe sends ACK/NACK of all PDSCH subframes corresponding to the terminal in the last downlink burst burst information, wherein n is a positive integer, k is a positive integer, and the nth subframe is the last PDSCH subframe in the last downlink burst; the N+Kth transmission opportunity (Transmission Opportunity, referred to as TXOP) The uplink subframe sends ACK/NACK information of all PDSCH subframes corresponding to the terminal in the downlink burst in the Nth TXOP, where N is a positive integer and K is a positive integer.

In an optional embodiment, the above k is 4; and/or, the above K is 1.

In an optional embodiment, mapping the above-mentioned UCI to resources includes at least one of the following: dividing the above-mentioned UCI into two or more groups; performing group mapping on resources according to the groups into which the UCI is divided, wherein the group mapping includes At least one of the following: one group of UCIs is mapped to more than two RBs, different groups of UCIs are mapped to different RBs, and different groups of UCIs are mapped to RBs of different physical uplink control channel PUCCH formats; the UCI The coded modulation is processed into a modulation symbol; the modulation symbol is multiplied by a predetermined sequence and mapped to a single carrier-orthogonal frequency division multiplexing (Single Carrier-Orthogonal Frequency Division Multiplexing, referred to as SC-OFDM) symbol included in the resource On multiple RBs, where the predetermined sequence is a different sequence corresponding to multiple RBs of the SC-OFDM symbol; or, the modulation symbol is multiplied by a time domain spreading sequence and a ZC sequence of a predetermined length Mapped to a plurality of single-carrier orthogonal frequency division multiplexing SC-OFDM symbols included in the resource, wherein the modulation symbol only occupies one RB on each SC-OFDM symbol; UCI is mapped to the m symbols included in the resource Single Carrier-Orthogonal Frequency Division Multiple Access (Single Carrier-Orthogonal Frequency Division Multiple Access, referred to as SC-OFDMA) on discrete or more than two RBs or Resource Elements (Resource Element, referred to as RE) within the system bandwidth of the symbol, wherein, m is a positive integer less than or equal to 4; UCI is mapped to the last s symbols of the special subframe, or mapped to t symbols after a predetermined microsecond after the downlink burst burst, where the values of s and t are all positive integers less than 7. In the first mapping method of this embodiment, the UCI information of each group is processed according to the bit information that can be carried by the format corresponding to the mapped RB.

In an optional embodiment, when the number of bits of the UCI is less than a predetermined value, mapping the UCI to the resource, and using an unlicensed carrier to send the UCI on the resource includes: repeatedly mapping the UCI to multiple bits in the resource RB, and use the above-mentioned unlicensed carrier resource to transmit the above-mentioned UCI on the resource; and/or, transfer the UCI to the licensed carrier for transmission.

In an optional embodiment, the above-mentioned method includes at least one of the following: the above-mentioned resource includes a physical uplink control channel PUCCH and/or a physical uplink shared channel PUSCH, wherein the PUCCH and PUSCH are frequency-divided by different interleaving units; the above-mentioned resource Including the physical uplink control channel PUCCH, when the PUCCH and the Sounding Reference Signal (SRS) are transmitted in the same subframe, the UCI is sent by discarding the SRS, or by deleting the corresponding frequency domain of the symbol occupied by the SRS The above UCI is sent by way of location.

A method for sending UCI is also provided in this embodiment. FIG. 2 is a flowchart of a second method for sending UCI according to an embodiment of the present invention. As shown in FIG. 2 , the process includes the following steps:

Step S202, determining resources for sending UCI, wherein the resources include more than three clusters, or the resources include one or more interleaving units, and the interleaving units are composed of more than three discrete resource blocks RB;

In step S204, the terminal is notified of the above-mentioned determined resource, where the resource is used for the terminal to send the above-mentioned UCI.

Wherein, it may be the base station that performs the above operations.

Through the above steps, the resources used to send UCI include more than three clusters, or include one or more interleaving units, and each interleaving unit is composed of more than three discrete RBs, and the specific number of RBs can be determined according to the system The bandwidth is determined. When the terminal uses the above-mentioned resources to send UCI, it can ensure that when sending UCI, the unlicensed carrier occupies 80% of the bandwidth and the PSD control requirements, thus solving the problem of unlicensed carriers in related technologies. When sending UCI information, it cannot meet the problems of regional control and unlicensed carriers occupying bandwidth.

In an optional embodiment, notifying the terminal of the determined resource includes: notifying the terminal of the determined resource through high-layer signaling; notifying the terminal of the determined resource through downlink control information.

In an optional embodiment, notifying the terminal of the determined resource includes: when the physical uplink control channel PUCCH format of each RB included in the interleaving unit is the same, allocating the same resource index, and notify the terminal of the resource index of the first RB in the interleaving unit; and/or, when the physical uplink control channel PUCCH formats of the RBs contained in the interleaving unit are different, each RB in the interleaving unit The resource indexes of all are notified to the terminal.

In an optional embodiment, when the PUCCH format of each RB included in the interleaving unit is the same and the resource index allocated to each RB in the interleaving unit is the same, the frequency domain spreading sequence of each RB The cyclic shift of is the same as that of the first RB, or each RB is offset by a cyclic shift of the same size, wherein the cyclic shift is notified to the terminal through resources, that is, when the above resources are notified to the terminal, The cyclic shift may be notified to the terminal together; and/or, when the PUCCH format of the RB contained in the above-mentioned interleaving unit contains a time-domain spreading code, the time-domain spreading code is notified to the terminal through the above-mentioned resources, wherein the same PUCCH The time-domain spreading codes contained in the RBs of the format are the same, that is, when the above resources are notified to the terminal, the time-domain spreading code may be notified to the terminal at the same time.

In an optional embodiment, when the PUCCH format of each RB included in the interleaving unit is different or the resource index of each RB is different, the cyclic shift of the frequency domain spreading sequence of the above RB and/or the time domain The spreading code is determined according to the resource index of the RB.

In an optional embodiment, the foregoing resources include frequency domain resources and code domain resources.

In an optional embodiment, after determining the resource for sending the above UCI, the method further includes: notifying the terminal of the physical uplink control channel PUCCH format of the RB.

In an optional embodiment, the PUCCH format of the above-mentioned RB includes one of the following: Format1, Format1a, Format1b, Format2, Format2a, Format2b, Format3, Format4, Format5, wherein, each resource block RB in the above-mentioned interleaving unit adopts The PUCCH formats are all the same, or the physical uplink control channel PUCCH format adopted by some RBs in the interleaving unit is the first format, and the PUCCH format adopted by the remaining RBs is the second format.

In an optional embodiment, an interleaving unit includes p RBs, and m RBs are spaced between the p RBs, where p is an integer greater than or equal to 3, m is a positive integer, and p and m The value is determined according to the system bandwidth.

In an optional embodiment, the above resources include a physical uplink control channel PUCCH and/or a physical uplink shared channel PUSCH, wherein the subframe corresponding to the PUCCH includes demodulation reference signal DMRS and symbols occupied by the UCI, the The subframe structure includes at least one of the following: a subframe includes two DMRS symbols, and the two DMRS symbols are symbols 3 and 10 respectively; a subframe includes four DMRS symbols, and the four DMRS symbols are symbols 1, 1, and 10 respectively. 5, 8 and 12.

In an optional embodiment, the above-mentioned RB includes a demodulation reference signal DMRS, and the number and positions of the DMRS included in the RB are determined by the format of the physical uplink control channel PUCCH of the RB.

In an optional embodiment, the above UCI includes at least one of the following: acknowledgment/non-acknowledgment ACK/NACK information of multiple processes of one or more carriers; acknowledgment/non-acknowledgment of multiple subframes of one or more carriers ACK/NACK information; periodic channel state information CSI of one or more carriers; aperiodic channel state information CSI of one or more carriers; buffer status report BSR; /NACK reports the synchronization bit.

In an optional embodiment, when the above UCI includes acknowledgment/non-acknowledgement ACK/NACK information corresponding to the physical downlink shared channel PDSCH of multiple subframes, and the UCI is sent through one transmission subframe in the resource, The timing relationship between the above-mentioned sending subframe and multiple subframes is determined by at least one of the following methods: the n+kth subframe sends the ACK/NACK information of all PDSCH subframes corresponding to the terminal in the last downlink burst burst, where n is A positive integer, k is a positive integer, the nth subframe is the last PDSCH subframe in the previous downlink burst; the uplink subframe in the N+Kth transmission opportunity TXOP is sent in the downlink burst in the Nth TXOP ACK/NACK information of all PDSCH subframes corresponding to the terminal, where N is a positive integer and K is a positive integer.

In an optional embodiment, the above k is 4; and/or, the above K is 1.

The method for sending the unlicensed spectrum uplink control information provided in the present invention will be described in detail below in conjunction with specific embodiments.

Embodiment one:

This embodiment describes the resource or structure and configuration of the PUCCH.

Each UE is assigned a PUCCH channel, and a PUCCH channel occupies M RBs with equal intervals and discrete intervals, and the number of RBs at intervals is N. For example, for a system bandwidth of 20M, the values of M and N are both 10. As shown in Figure 3, one PUCCH channel occupies 10 channels numbered 0, 10, 20, 30, 40, 50, 60, 70, 80, and 90. RBs, these RBs can form an interleaving unit, and the number of the interleaving unit is 0. The interleaving unit numbered 1 includes RB1, 11, 21, 31, 41, 51, 61, 71, 81, and 91. The PUCCH channel of each UE occupies one interleaving unit, that is, 10 RBs.

The base station can semi-statically configure the PUCCH resource of each UE through high-layer signaling, or the UE can determine its own PUCCH resource through implicit mapping. For example, the base station indicates the interleaving unit number of the UE PUCCH channel through 4-bit signaling. 0000 indicates that the PUCCH of the UE occupies the interleaving unit numbered 0, including RBs with RB indexes of 0, 10, 20, 30, 40, 50, 60, 70, 80, and 90. 1001 indicates that the PUCCH of the UE occupies the interleaving unit numbered 9, and the included RB indexes are 9, 19, 29, 39, 49, 59, 69, 79, 89, and 99.

Or, when the content carried by the PUCCH includes ACK/NACK, the UE determines the interleaving unit number of the PUCCH channel through the minimum CCE index of the PDCCH of the PDSCH subframe corresponding to the ACK/NACK.

The PUCCH and the PUSCH occupy different interleaving units through frequency division. When the base station schedules the PUSCH or allocates PUSCH resources to the UE, it avoids the PUCCH resources.

Embodiment two

This embodiment describes the format adopted by the PUCCH.

The channel structure of PUCCH is shown in Fig. 4, each PUCCH channel includes multiple RBs, and the structure adopted by each RB is still the existing PUCCH format of R13.

Wherein, the format adopted by each RB may include the following two types:

The first type: pre-defined or semi-statically configured by high-layer signaling of the base station, a certain interleaving unit contains only one format. That is, the format of each RB is the same, for example, both are format2, or both are format2a, or both are format2b, or both are format 5, or both are format4.

The second type: the base station configures a certain interleaving unit to include multiple formats, and the formats adopted by different RBs may be different. For example, some RBs of an interleaving unit are format 1, some RBs are format 2, or some RBs use format 3, some RBs use format 2, or some RBs use format 1, and some RBs use format 4 or format 5.

The base station can realize the transmission of different UCI bit numbers and the switching between various formats by allocating different formats.

Different UEs on the same RB can only use the same format, so as to realize multi-user orthogonal multiplexing.

Each UE performs PUCCH resource code division multiplexing in one interleaving resource through frequency domain multiplexing with different interleaving indexes and different frequency domain spreading codes in the same interleaving index, and/or Orthogonal Convolutional Code (Orthogonal Convolutional Code, OCC for short). use.

Wherein, the UCI information transmitted by the carrier may include at least one of the following:

ACK/NACK of multiple processes or multiple subframes of one carrier; periodic CSI information or aperiodic CSI information of one or more carriers; BSR; extra bits are used by the base station and UE to maintain ACK/NACK reporting synchronization.

The information processing process of UCI includes the following two methods:

Method 1: UCI information is grouped first, and one group may be eventually mapped to multiple RBs, and different groups are mapped to different RBs or carried in different formats.

Then the UCI information of each group performs coding rate matching on the information according to the bit information that can be carried by the format corresponding to the mapped RB, followed by scrambling, modulation, and mapping.

Manner 2: The UCI information is repeatedly sent on multiple RBs. Each RB processes the UCI according to the format adopted by the RB.

Embodiment three

This embodiment describes the case where the PUCCH includes only one of the formats 2/2a/2b, or two or three formats of the formats 2/2a/2b.

The format 2/2a/2b processing method is used to process the UCI for each RB of the PUCCH defined by the system pre-defined method or the RRC signaling configuration method of the upper layer of the base station. The structure of the PUCCH is shown in FIG. 5 . Each RB uses the same format, for example, all RBs in an interleaving unit are format 2, or all are format 2a, or all are format 2b. Or each RB adopts a different format, for example, the RB with index 0 adopts format2, the RB with index 10 adopts format 2a, and the RB with index 20 adopts format2b.

Each subframe of the PUCCH in format 2/2a/2b includes 4 DMRS symbol positions, and the specific positions are the same as the existing positions.

When UCI includes CSI information such as ACK/NACK, CQI, PMI, and RI, uplink control information can be sent in format2/2a/2b. The specific information processing process is as follows:

Divide the UCI information into 10 groups, and then each group is mapped to a different RB, and each group performs corresponding information processing, coding, scrambling, and modulation according to the format corresponding to the RB, and then multiplies a ZC sequence in the frequency domain Spectrum spreading, and finally mapped to a corresponding SC-OFDM symbol of an RB.

Among them, the determination method of the ZC sequence used by each RB is as follows:

Mode 1: ZC sequences of all RBs are the same.

Mode 2: The root sequences of the ZC sequences of all RBs are the same, and the cyclic shifts adopted by each RB are different.

When multiple UEs occupy the same RB and the ZC root sequence is the same, the cyclic shifts of the ZC sequences used are different.

Mode 3: The spreading sequences used by all RBs are obtained by intercepting the same ZC sequence.

For example, PUCCH occupies 10 RBs of an interleaving unit, and the sequence used for spreading on each RB consists of the same ZC sequence with a length of 120, and the values are N(0), N(1), N(2), N( 3),...N(119) are obtained by intercepting 12 values at different positions. The sequence used by the first RB of the interleaving unit is N(0)-N(11) of this sequence, the sequence used by the second RB is N(12)-N(23), and so on.

When the UCI information is less than 10 bits, the processing method is:

Way 1: Each RB repeatedly transmits the UCI information. That is, the contents of the final SC-OFDM symbols on all RBs included in the PUCCH are the same.

Method 2: Divide the UCI information into p groups, where p is less than 10, for example, p is 2 or 5. Each group is then repeatedly mapped onto multiple RBs. The data of each RB is spread according to the sequence corresponding to the RB.

Embodiment Four

This embodiment describes the resource mapping manner when the uplink control information is carried by the PUCCH format4.

The original reserved configuration 7 of the extended configuration PUCCH format 4 is used to support the PUCCH occupying one interleaving unit, or 10 discrete and equally spaced RBs. Then the base station gives the index of the interleaving unit occupied by the PUCCH of the UE through high layer signaling. The numbers of the interleaving units occupied by the PUCCH of different UEs are different. In other words, in this format, different UEs can only be multiplexed through frequency division.

Then UCI of different bits performs data generation of 10 RBs and 12 OFDM symbols through coding rate matching, and then performs data scrambling and QPSK modulation processing according to the existing format 4 to generate modulation symbols, and then maps these modulation symbols to SC-OFDM symbols of 10 RBs at discrete intervals.

For example, if the high-level signaling configures the interleaving unit occupied by the PUCCH of a certain UE as number 1, then the RB indexes occupied by the PUCCH channel are 1, 11, 21, 31, 41, 51, 61, 71, 81, 91, which are mapped to Indexes of subcarriers include k=12, 13, 14...23,....

PUCCH format4 carries UCI information of at least 10 modulation symbols. When the UCI information is less than 10 modulation symbols, it is sent in a repeated manner, that is, the data on the same SC-OFDM symbol of each RB is the same.

Embodiment five

This embodiment describes the situation that each RB corresponding to the PUCCH is format 5 (ie, format5).

Each RB of the PUCCH is defined by the system pre-defined method or the radio resource control (Radio Resource Control, RRC for short) signaling configuration method of the upper layer of the base station, and the format5 processing method is used for UCI processing. The structure of the PUCCH is shown in FIG. 6 . Each subframe contains 2 DMRS symbol positions, located at symbol 3 and symbol 10.

Optionally, the UCI information processing process can be as follows:

The UCI information is equally divided into 10 groups, and each group is mapped to a different RB, and each group performs corresponding information processing, coding, scrambling, and modulation according to format 5, and then maps to SC-OFDMA symbols.

Multiple UEs can implement multiplexing by configuring different interleaving units in frequency division or in the same frequency domain resource code division.

Embodiment six

This embodiment describes the switching between various formats when the PUCCH supports multiple formats.

When the PUCCH supports multiple formats, the format to be used can be determined according to one of the following methods.

When the number of carriers configured by the UE is less than the predefined threshold n1, or the number of UCI bits is less than the predefined threshold m1, the PUCCH adopts format 2/2a/2b.

When the number of carriers configured by the UE is greater than n1 and less than the predefined threshold n2, or when the number of UCI bits is greater than m1 and less than the predefined threshold m2, the PUCCH adopts format 3.

When the number of carriers configured by the UE is greater than the predefined threshold n2, or the number of UCI bits is greater than the predefined threshold m2, the PUCCH adopts format 4/5.

When the UCI information only includes ACK/NACK information, use format1a/1b and/or format3 or format4 or format5.

When UCI information includes CSI and ACK/NACK multiplexing, use format2/2a/2b and/or format4 or format5.

Embodiment seven

This embodiment describes the information processing of the UCI with a small number of bits.

When the number of UCI bits fed back by a certain carrier is relatively small, use one of the following methods to deal with it:

Method 1: transfer to the primary cell PCell of the authorized carrier to send.

Method 2: Send by repeating.

Specifically, the UCI information is repeatedly sent on multiple RBs, and the specific UCI information processing process is performed according to the existing PUCCH format corresponding to the RB.

Method 3:

All UCI information is coded together according to a predefined coding method, then scrambled by a UE-specific scrambling sequence, and modulated by QPSK, and then each modulation symbol is mapped to an SC-OFDM symbol by multiplying a different sequence corresponding to a different RB on multiple RBs, as shown in Figure 7. And there is no need to support frequency hopping between time slots, and the sequence of each RB is still a CG sequence with a length of 12.

Optionally, the sequence design of each RB can be as follows:

Each RB uses a different cyclic shift of the same sequence. Different UEs may have different cyclic shifts of the first RB. The base station only provides the cyclic shift of the first RB during configuration. Subsequent RBs have the same predefined shift length, so subsequent RBs are also orthogonal. In the time domain, the original symbol-based sequence frequency hopping method is still used.

Method 4: All UCI information can be coded together according to a predefined coding method, then scrambled by a UE-specific scrambling sequence, and modulated by QPSK, and then each modulation symbol is first multiplied by a time-domain spreading sequence, and then each The RB is multiplied by a ZC sequence with a length of 12, and then mapped to multiple SC-OFDM symbols, each modulation symbol occupies only one RB of one SC-OFDMA symbol, as shown in Figure 8 . Frequency hopping is still supported between time slots to obtain frequency diversity gain.

Embodiment eight

In this embodiment, the UCI is first encoded, scrambled, and modulated according to the original format 3 processing method to generate one RB mapping data.

Then, the data processing method of the remaining RB mapping is: before the discrete Fourier transform (DFT for short) transformation, the y(n) content of one RB is cyclically shifted with different lengths.

Assuming that the symbol data generated by UCI using format 3 is y(n), the content sent by the first RB is to directly perform DFT on y(n), and the content of the second and other RBs is firstly processed before DFT. y(n) performs a cyclic shift of a predefined length, and different RBs have different shift lengths.

For example, the cyclic shift length of the second RB is 1, the cyclic shift length of the third RB is 2, and the cyclic shift length of the content sent by the sixth RB is 6. The shifted y(n) is transformed into:

In this manner, the initial UCI information sent by different RBs is the same, except that each RB cyclically shifts the transmitted modulated symbols before DFT. In this way, since the same content has been sent at different frequency positions, there is no need to support frequency hopping between time slots.

Embodiment nine

This embodiment describes the carrier grouping method of the PUCCH.

When the UE only supports simultaneous transmission of two PUCCHs, one of the following is used for carrier grouping:

Method 1: Unlicensed carriers form a group, and licensed carriers form a group. Each group has one PUCCH, and the UCI of multiple carriers is sent through the PUCCH of one carrier.

Method 2: A set of licensed carriers + some unlicensed carriers. A group of remaining unlicensed carriers.

Method 3: A group of PCells. The remaining carriers are one group, and the unlicensed carrier transmits the PUCCH to only feed back the ACK/NACK of this carrier or this unlicensed carrier group. The ACK/NACK of the authorized carrier is only fed back through the PCell.

And when the number of UCI bits of the unlicensed carrier is relatively small, the UCI is transmitted through authorization, and when the number of bits is large, the UCI is transmitted through unlicensed.

When the UE can support three PUCCH transmissions, the carrier groups corresponding to the PUCCH are as follows:

A group of licensed carriers. One group for some unlicensed carriers, and one group for the remaining unlicensed carriers. The UCI information of each carrier is sent through its own PUCCH.

Embodiment ten

This embodiment describes the timing relationship between ACK/NACK and PDSCH in UCI.

When a subframe can feed back ACK/NACK corresponding to multiple subframe PDSCHs, the timing relationship is determined by one of the following methods:

Method 1: As shown in FIG. 9 , it is determined according to the principle of adding 4 to the last downlink PDSCH subframe of the last downlink burst. And the n+k subframe feeds back the demodulation structure of all PDSCH subframes of the UE in the last downlink burst.

Method 2: As shown in FIG. 10 , a method of cross-burst feedback is adopted. The uplink subframe in the N+1th transmission opportunity (Transmission Opportunity, TXOP for short) feeds back the demodulation results of all PDSCH subframes in the downlink burst in the Nth TXOP.

Embodiment Eleven

This embodiment describes the sending method of compressing the time-domain length of the uplink control information and extending the frequency-domain resources.

The uplink control information can be mapped to the PUCCH channel of two or three symbols for transmission. Or carried by a new PUCCH transmission format. At this time, different PUCCH resources are frequency-divided by different REs or RBs. Each PUCCH channel occupies a plurality of discrete REs or RBs within the bandwidth. The PUCCH resource of each UE is configured by the base station.

At this time, the position structure of the PUCCH in the subframe has the following three types:

The first type: the PUCCH is transmitted from the middle of the subframe, or the PUCCH and the downlink belong to the same subframe, and the subframe structure is shown in FIG. 11 . The uplink subframe is located at the end of the downlink partial subframe. Wherein GP is the time used for uplink and downlink conversion and UE performs CCA.

The second type: PUCCH starts 16 microseconds after the DL burst, and 16 microseconds are used for the transceiving time of downlink to uplink conversion, as shown in Figure 12. The time domain length of PUCCH is 2 to 4 OFDM symbols.

This PUCCH is used to transmit the demodulation result of the PDSCH in the previous burst, that is, ACK/NACK information.

The third type: PUCCH is transmitted from the first symbol of the subframe, and the time domain length occupies L OFDM symbols, as shown in FIG. 13 . The location of the UE CCA is at the end of the subframe.

The process of UCI is as follows:

If the ACK/NACK information corresponding to the PUCCH group is to be transmitted, the ACK/NACK information of these carriers is concatenated first, and 1 bit or 2 bits are used to represent the ACK/NACK of each carrier.

Optionally, when feeding back the ACK/NACK corresponding to multiple PDSCHs contained in a downlink (DL) burst on the same carrier at one time, the ACK/NACK information of the multiple PDSCH packets is also in the order of subframes Carry out cascading, and then multiple carriers are cascaded together. After the original information is coded by a sequence, it is then modulated by QPSK to generate a modulation symbol, which is mapped to the RE corresponding to the PUCCH.

When the channel also carries channel quality indicator (CQI for short) information, the information may be the CQI of multiple carriers in the PUCCH group. At this time, the CQIs of the multiple carriers are first concatenated, and then passed Sequence encoding, and then attach ACK/NACK information to the encoded CQI information, and then perform quadrature phase shift keying (Quadrature Phase Shift Keying, QPSK for short) modulation to generate modulation symbols. Then resource mapping is performed according to the REs occupied by the PUCCH.

In the frequency domain, the frequency domain positions mapped by the PUCCH of some subframes are discrete M REs or RBs at equal intervals, meeting the requirement that the entire frequency domain accounts for at least 80% of the system bandwidth.

Alternatively, an information processing method similar to a Physical Hybrid ARQ Indicator Channel (PHICH for short) is adopted.

Embodiment 12

This embodiment describes the resource allocation of the UE PUCCH channel. The resources include frequency domain resources and code domain resources.

The base station configures the PUCCH resource semi-statically through high-level signaling, and/or the UE implicitly determines the PUCCH resource through the position of the corresponding PDCCH. The resource includes an interleaving unit number and a resource index in each RB of the interleaving unit.

In this embodiment, PUCCH resources can be allocated in the following two ways:

Method 1: When the RBs included in the allocated interleaving unit all adopt the same PUCCH format, the base station only provides the resource index of the first RB, and the other RBs are the same.

Mode 2: When the RBs included in the allocated interleaving unit adopt different PUCCH formats, the base station provides the resource index of each RB.

The method for determining the code domain resource adopted by each RB is:

When the PUCCH format of each RB in the interleaving unit is the same and the resource index allocated to the UE is the same, the cyclic shift of the frequency domain spreading sequence of each RB is the same as that of the first RB, or each UE Offset a circular shift of the same size. The UE implicitly obtains the size of the cyclic shift through the PUCCH resource allocated by the base station.

When the adopted format includes a time-domain spreading code, the time-domain spreading code of the UE implicitly obtains a code index through the PUCCH resource allocated by the base station. And the spreading codes of other RBs with the same format are the same.

When the PUCCH format contained in each RB of the interleaving unit is different or the resource index of each RB is different, the cyclic shift of the frequency-domain spreading sequence and/or time-domain spreading code of each RB of the UE is based on the resource index of the RB Sure.

Embodiment Thirteen

This embodiment describes the PUCCHs with different time domain lengths in the eleventh embodiment.

The system can predefine various PUCCH structures including different numbers of symbols. For example, the number of symbols of the predefined short PUCCH is 7, 2, 3, and 4. Other short PUCCHs with different symbols can be obtained by combining the above symbols with different numbers.

For example, as shown in accompanying drawing 14. When the number of remaining symbols in the last subframe of the downlink burst is 11, 10 symbols can send the PUCCH. Then it can be realized by sending a PUCCH with 7 symbols and a PUCCH structure with 3 symbols.

Wherein, the PUCCH structure of 7 symbols is exactly the same as the existing PUCCH structure of one time slot. The PUCCH structure of 3 symbols is that the middle one is DMRS, and UCI is sent on both sides. The PUCCH structure of 2 symbols is that one symbol is DMRS, and the other symbol sends UCI. The time domain structure of the PUCCH with 4 symbols is that the middle two symbols are DMRS, and the two sides are UCI, or the two DMRS are separated and the middle is placed with UCI.

In this embodiment, a UCI sending device is also provided, and the device is used to implement the above embodiments and preferred implementation modes, and what has been explained will not be repeated. As used below, the term "module" may be a combination of software and/or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

FIG. 15 is a structural block diagram of a first UCI sending device according to an embodiment of the present invention. As shown in FIG. 15 , the device includes a first determination module 152 and a processing module 154. The device is described below:

The first determining module 152 is configured to determine resources for sending UCI, wherein the resources include more than three clusters, or the resources include one or more interleaving units, and the interleaving units consist of more than three discrete resource blocks RB composition: a processing module 154, connected to the first determining module 152, configured to map the UCI to resources, and send the UCI on the resources by using an unlicensed carrier.

In an optional embodiment, the above-mentioned first determination module 152 may determine the resource for sending the above-mentioned UCI through at least one of the following methods: determine the resource for sending the UCI by receiving high-layer signaling from the base station; The position of the physical downlink control channel PDCCH determines the resource used for sending UCI; the resource used for sending UCI is determined through the received downlink control information from the base station. Wherein, the above-mentioned three ways of determining are only some preferred ways of determining resources. In practical applications, other ways may also be used to determine resources for sending UCI, for example, through negotiation between the base station and the terminal.

In an optional embodiment, the above-mentioned first determination module 152 may determine resources for sending UCI in the following manner: determine the number of one or more interleaving units and the resource index in each RB in the interleaving unit; Identify the resource based on this number and the resource index. In this embodiment, the number of the interleaving unit and the resource index of the RB in the interleaving unit may be notified by the base station, or determined through negotiation between the base station and the terminal, or determined in other ways.

In an optional embodiment, the foregoing resources include frequency domain resources and code domain resources.

In an optional embodiment, the physical uplink control channel PUCCH format of the above-mentioned RB includes one of the following: Format1, Format1a, Format1b, Format2, Format2a, Format2b, Format3, Format4, Format5, wherein each resource block in the interleaving unit The PUCCH formats adopted by the RBs are all the same, or the physical uplink control channel PUCCH format adopted by some RBs in the interleaving unit is the first format, and the PUCCH format adopted by the remaining RBs is the second format. In this embodiment, the PUCCH formats of the multiple RBs in the interleaving unit may be all the same, or all different, or partly the same, and the PUCCH formats of the RBs are consistent with existing PUCCH formats.

In an optional embodiment, the above apparatus further includes a format determining module, the format determining module is used to determine the PUCCH format of the RB in at least one of the following ways: determine the PUCCH format of the RB in a manner indicated by the base station, wherein the RB The PUCCH format of the base station is determined according to the number of unlicensed carriers; the PUCCH format of the RB is determined according to the number of bits of the UCI.

In an optional embodiment, an interleaving unit includes p RBs, and m RBs are spaced between the p RBs, where p is an integer greater than or equal to 3, m is a positive integer, and the selection of p and m is The value is determined according to the system bandwidth. In this embodiment, when determining the values of p and m, the determination is based on 80% occupied bandwidth.

In an optional embodiment, all RBs in an interleaving unit use the same code sequence when transmitting UCI, and the code sequence is one of multiple code sequences, and the multiple code sequences satisfy the requirement that the same sequence is different The nature of cyclic shift orthogonality, that is, multiple code sequences are formed by the same sequence undergoing different cyclic shifts.

In an optional embodiment, the above resources include a physical uplink control channel PUCCH and/or a physical uplink shared channel PUSCH, wherein the subframe corresponding to the PUCCH includes demodulation reference signal DMRS and symbols occupied by the UCI, the The structure of the subframe includes at least one of the following: one of the above-mentioned subframes contains two DMRS symbols, and the two DMRS symbols are symbols 3 and 10 respectively; one of the above-mentioned subframes contains four DMRS symbols, and the four DMRS symbols are respectively symbols 1, 5, 8 and 12.

In an optional embodiment, the above-mentioned RB includes a demodulation reference signal DMRS, and the number and positions of the DMRS included in the RB are determined by the format of the physical uplink control channel PUCCH of the RB.

In an optional embodiment, the above UCI includes at least one of the following: acknowledgment/non-acknowledgment ACK/NACK information of multiple processes of one or more carriers; acknowledgment/non-acknowledgment of multiple subframes of one or more carriers ACK/NACK information; periodic channel state information CSI of one or more carriers; aperiodic channel state information CSI of one or more carriers; buffer status report BSR; /NACK reports the synchronization bit.

In an optional embodiment, when the UCI includes acknowledgment/non-acknowledgement ACK/NACK information corresponding to the physical downlink shared channel PDSCH of multiple subframes, and the UCI is sent through one sending subframe in the resource, the above sending The timing relationship between a subframe and multiple subframes is determined by at least one of the following methods: the n+kth subframe sends the ACK/NACK information of all PDSCH subframes corresponding to the terminal in the last downlink burst burst, where n is a positive integer , k is a positive integer, the nth subframe is the last PDSCH subframe in the last downlink burst; the uplink subframe in the N+K transmission opportunity TXOP sends the terminal in the Nth TXOP downlink burst burst ACK/NACK information of all corresponding PDSCH subframes, where N is a positive integer and K is a positive integer.

In an optional embodiment, the above k is 4; and/or, the above K is 1.

In an optional embodiment, the above-mentioned processing module 154 may map the above-mentioned UCI to resources in at least one of the following ways: divide the above-mentioned UCI into two or more groups; perform group mapping on resources according to the groups divided by the UCI, Wherein, the packet mapping includes at least one of the following: one group of UCIs is mapped to more than two RBs, different groups of UCIs are mapped to different RBs, and different groups of UCIs are mapped to different physical uplink control channel PUCCH formats on the RB; UCI coding and modulation is processed into a modulation symbol; the modulation symbol is mapped to multiple RBs of a single-carrier orthogonal frequency division multiplexing SC-OFDM symbol included in the resource by multiplying the predetermined sequence, wherein , the predetermined sequence is a different sequence corresponding to multiple RBs of the SC-OFDM symbol; or, the modulation symbol is mapped to multiple RBs included in the resource by multiplying a time-domain spreading sequence and a ZC sequence of a predetermined length. On single carrier orthogonal frequency division multiplexing SC-OFDM symbols, wherein, the modulation symbol only occupies one RB on each SC-OFDM symbol; UCI is mapped to the m single carrier orthogonal frequency division included in the resource On two or more discrete RBs or resource elements RE within the system bandwidth of a multiple access SC-OFDMA symbol, where m is a positive integer less than or equal to 4; UCI is mapped to the last s symbols of a special subframe, or mapped to t symbols after a predetermined microsecond after the downlink burst, where the values of s and t are positive integers less than 7. In the first mapping method of this embodiment, the UCI information of each group is processed according to the bit information that can be carried by the format corresponding to the mapped RB.

In an optional embodiment, when the number of bits of UCI is less than a predetermined value, the processing module 154 may map UCI to the resource in the following manner, and use an unlicensed carrier to send UCI on the resource: repeat the UCI Mapping to multiple RBs in the resource, and using the unlicensed carrier resource to send the UCI on the resource; and/or, the device further includes a sending module, configured to transfer the UCI to a licensed carrier for sending.

In an optional embodiment, at least one of the following is included: the above-mentioned resource includes a physical uplink control channel PUCCH and/or a physical uplink shared channel PUSCH, wherein the PUCCH and PUSCH are frequency-divided by different interleaving units; the above-mentioned resource includes a physical For the uplink control channel PUCCH, when the PUCCH and the sounding reference signal SRS are transmitted in the same subframe, the UCI is sent by discarding the SRS, or by deleting the corresponding frequency domain position of the symbol occupied by the SRS.

FIG. 16 is a structural block diagram of a second UCI sending device according to an embodiment of the present invention. As shown in FIG. 16 , the device includes a second determination module 162 and a notification module 164. The device is described below:

The second determining module 162 is configured to determine resources for sending UCI, wherein the resources include more than three clusters, or the resources include one or more interleaving units, and the interleaving units are composed of more than three discrete resource blocks RB The notification module 164, connected to the second determination module 162, is configured to notify the terminal of the determined resource, where the resource is used for the terminal to send the UCI.

In an optional embodiment, the notification module 164 may notify the terminal of the determined resource in the following manner: notify the terminal of the determined resource through high-layer signaling; notify the determined resource to the terminal through downlink control information terminal.

In an optional embodiment, the notification module 164 may notify the terminal of the determined resources in the following manner: when the physical uplink control channel (PUCCH) format of each RB included in the interleaving unit is the same, the resource in the interleaving unit Each RB in the interleaving unit is assigned the same resource index, and the resource index of the first RB in the interleaving unit is notified to the terminal; and/or, when the physical uplink control channel PUCCH formats of the RBs contained in the interleaving unit are different, the interleaving unit The resource index of each RB in is notified to the terminal.

In an optional embodiment, when the PUCCH format of each RB included in the interleaving unit is the same and the resource index allocated to each RB in the interleaving unit is the same, the frequency domain spreading sequence of each RB The cyclic shift of is the same as that of the first RB, or each RB is offset by a cyclic shift of the same size, wherein the cyclic shift is notified to the terminal through resources, that is, when the above resources are notified to the terminal, The cyclic shift may be notified to the terminal together; and/or, when the PUCCH format of the RB contained in the above-mentioned interleaving unit contains a time-domain spreading code, the time-domain spreading code is notified to the terminal through the above-mentioned resources, wherein the same PUCCH The time-domain spreading codes contained in the RBs of the format are the same, that is, when the above resources are notified to the terminal, the time-domain spreading code may be notified to the terminal at the same time.

In an optional embodiment, when the PUCCH format of each RB included in the interleaving unit is different or the resource index of each RB is different, the cyclic shift of the frequency domain spreading sequence of the above RB and/or the time domain The spreading code is determined according to the resource index of the RB.

In an optional embodiment, the foregoing resources include frequency domain resources and code domain resources.

In an optional embodiment, the above apparatus further includes a notification module, configured to notify the terminal of the physical uplink control channel PUCCH format of the RB after determining the resource for sending the UCI.

In an optional embodiment, the PUCCH format of the above-mentioned RB includes one of the following: Format1, Format1a, Format1b, Format2, Format2a, Format2b, Format3, Format4, Format5, wherein, each resource block RB in the above-mentioned interleaving unit adopts The PUCCH formats are all the same, or the physical uplink control channel PUCCH format adopted by some RBs in the interleaving unit is the first format, and the PUCCH format adopted by the remaining RBs is the second format.

In an optional embodiment, an interleaving unit includes p RBs, and m RBs are spaced between the p RBs, where p is an integer greater than or equal to 3, m is a positive integer, and p and m The value is determined according to the system bandwidth.

In an optional embodiment, the above resources include a physical uplink control channel PUCCH and/or a physical uplink shared channel PUSCH, wherein the subframe corresponding to the PUCCH includes demodulation reference signal DMRS and symbols occupied by the UCI, the The subframe structure includes at least one of the following: a subframe includes two DMRS symbols, and the two DMRS symbols are symbols 3 and 10 respectively; a subframe includes four DMRS symbols, and the four DMRS symbols are symbols 1, 1, and 10 respectively. 5, 8 and 12.

In an optional embodiment, the above-mentioned RB includes a demodulation reference signal DMRS, and the number and positions of the DMRS included in the RB are determined by the format of the physical uplink control channel PUCCH of the RB.

In an optional embodiment, the above UCI includes at least one of the following: acknowledgment/non-acknowledgment ACK/NACK information of multiple processes of one or more carriers; acknowledgment/non-acknowledgment of multiple subframes of one or more carriers ACK/NACK information; periodic channel state information CSI of one or more carriers; aperiodic channel state information CSI of one or more carriers; buffer status report BSR; /NACK reports the synchronization bit.

In an optional embodiment, when the above UCI includes acknowledgment/non-acknowledgement ACK/NACK information corresponding to the physical downlink shared channel PDSCH of multiple subframes, and the UCI is sent through one transmission subframe in the resource, The timing relationship between the above-mentioned sending subframe and multiple subframes is determined by at least one of the following methods: the n+kth subframe sends the ACK/NACK information of all PDSCH subframes corresponding to the terminal in the last downlink burst burst, where n is A positive integer, k is a positive integer, the nth subframe is the last PDSCH subframe in the previous downlink burst; the uplink subframe in the N+Kth transmission opportunity TXOP is sent in the downlink burst in the Nth TXOP ACK/NACK information of all PDSCH subframes corresponding to the terminal, where N is a positive integer and K is a positive integer.

In an optional embodiment, the above k is 4; and/or, the above K is 1.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products are stored in a storage medium (such as ROM/RAM, disk, CD) contains several instructions to enable a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present invention.

It should be noted that each of the above-mentioned modules can be implemented by software or hardware. For the latter, it can be implemented in the following manner, but not limited to this: the above-mentioned modules are all located in the same processor; or, the above-mentioned modules are respectively located in multiple in the processor.

The embodiment of the invention also provides a storage medium. Optionally, in this embodiment, the above-mentioned storage medium may be configured to store program codes for performing the following steps:

S1. Determine a resource for sending UCI, where the resource includes more than three clusters, or the resource includes one or more interleaving units, and the interleaving unit is composed of more than three discrete resource blocks RB;

S2. Map the above-mentioned UCI to the above-mentioned resource, and use an unlicensed carrier to send the UCI on the above-mentioned resource.

Optionally, the storage medium is also configured to store program codes for performing the following steps:

S1. Determine a resource for sending UCI, where the resource includes more than three clusters, or the resource includes one or more interleaving units, and the interleaving unit is composed of more than three discrete resource blocks RB;

S2. Notify the terminal of the above-mentioned determined resource, where the resource is used for the terminal to send the above-mentioned UCI.

Optionally, in this embodiment, the above-mentioned storage medium may include but not limited to: U disk, read-only memory (Read-Only Memory, ROM for short), random access memory (Random Access Memory, RAM for short), Various media that can store program codes such as removable hard disks, magnetic disks, or optical disks.

Optionally, in this embodiment, the processor executes the above steps according to the program code stored in the storage medium.

Optionally, for specific examples in this embodiment, reference may be made to the examples described in the foregoing embodiments and optional implementation manners, and details are not repeated in this embodiment.

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Alternatively, they may be implemented in program code executable by a computing device so that they may be stored in a storage device to be executed by a computing device, and in some cases in an order different from that shown here The steps shown or described are carried out, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps among them are fabricated into a single integrated circuit module for implementation. As such, the present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (32)

1. A method for sending Uplink Control Information (UCI), comprising:

determining a resource for transmitting UCI, wherein the resource comprises more than three clusters, or the resource comprises one or more interleaving units, and each interleaving unit consists of more than three discrete Resource Blocks (RBs);

mapping the UCI to the resources, and transmitting the UCI on the resources by using an unlicensed carrier.

2. The method of claim 1, wherein determining the resources for transmitting the UCI comprises at least one of:

determining the resource for transmitting the UCI through a received higher layer signaling from a base station;

determining the resource for transmitting the UCI according to the determined position of a Physical Downlink Control Channel (PDCCH);

determining the resource for transmitting the UCI through the received downlink control information from the base station.

3. The method of claim 1, wherein determining resources for transmitting UCI comprises:

determining the number of one or more of the interleaved units and the resource index within each RB within the interleaved units;

and determining the resources according to the numbers and the resource indexes.

4. The method of any of claims 1-3, wherein the resources comprise frequency domain resources and code domain resources.

5. The method of claim 1, wherein a Physical Uplink Control Channel (PUCCH) format of the RB comprises one of:

format1, format1a, format1b, format2a, format2b, format3, format4, and Format5, where PUCCH formats adopted by each resource block RB in the interleaving unit are all the same, or a PUCCH Format of a physical uplink control channel adopted by a part of RBs in the interleaving unit is a first Format, and PUCCH formats adopted by the rest of RBs are a second Format.

6. The method of claim 5, further comprising: determining a PUCCH format of the RB by at least one of:

determining the PUCCH format of the RB in a mode indicated by a base station, wherein the PUCCH format of the RB is determined by the base station according to the number of the unlicensed carriers;

and determining the PUCCH format of the RB according to the bit number of the UCI.

7. The method of claim 1, wherein one interleaving unit comprises p RBs, the p RBs are spaced by m RBs, where p is an integer greater than or equal to 3, m is a positive integer, and values of p and m are determined according to a system bandwidth.

8. The method of claim 1 or 7, wherein all RBs in an interlace unit use the same code sequence when transmitting the UCI.

9. The method according to claim 1, wherein the resources comprise a Physical Uplink Control Channel (PUCCH) and/or a Physical Uplink Shared Channel (PUSCH), wherein a subframe corresponding to the PUCCH comprises symbols occupied by a demodulation reference signal (DMRS) and the UCI, and wherein the structure of the subframe comprises at least one of:

one said subframe contains two DMRS symbols, symbols 3 and 10, respectively;

one of the subframes contains four DMRS symbols, which are symbols 1,5, 8, and 12, respectively.

10. The method according to claim 1, wherein the RB contains a DMRS, and wherein the number and location of DMRS contained in the RB is determined by the format of the physical uplink control channel, PUCCH, of the RB.

11. The method of claim 1, wherein the UCI comprises at least one of:

acknowledgement/non-acknowledgement, ACK/NACK, information for multiple processes for one or more carriers;

acknowledgement/non-acknowledgement, ACK/NACK, information for a plurality of subframes of one or more carriers;

periodic channel state information, CSI, of one or more carriers;

aperiodic channel state information, CSI, of one or more carriers;

a buffer status report BSR;

one or more bits for the base station and the terminal to keep acknowledgement/non-acknowledgement ACK/NACK reporting synchronization.

12. The method according to claim 1 or 11, wherein when the UCI includes acknowledgement/non-acknowledgement ACK/NACK information corresponding to a physical downlink shared channel, PDSCH, of a plurality of subframes and the UCI is transmitted through one transmission subframe in the resources, a timing relationship between the transmission subframe and the plurality of subframes is determined by at least one of:

the nth + kth subframe sends ACK/NACK information of all PDSCH subframes corresponding to the terminal in the last downlink burst, wherein n is a positive integer, k is a positive integer, and the nth subframe is the last PDSCH subframe in the last downlink burst;

and sending ACK/NACK information of all PDSCH subframes corresponding to the terminal in a downlink burst in an Nth TXOP by using an uplink subframe in the (N + K) th transmission opportunity TXOP, wherein N is a positive integer, and K is a positive integer.

13. The method of claim 12, comprising at least one of:

the k is 4;

and K is 1.

14. The method of claim 1, wherein mapping the UCI onto the resources comprises at least one of:

dividing the UCI into two or more groups; performing packet mapping on the resources according to the group into which the UCI is divided, wherein the packet mapping includes at least one of: UCI of one group is mapped to more than two RBs, UCI of different groups is mapped to different RBs respectively, and UCI of different groups is mapped to different RBs of formats of a Physical Uplink Control Channel (PUCCH);

processing the UCI code modulation into modulation symbols; mapping the modulation symbols onto a plurality of RBs of a single-carrier orthogonal frequency division multiplexing (SC-OFDM) symbol included in the resources by multiplying the modulation symbols by a predetermined sequence, wherein the predetermined sequence is a different sequence corresponding to the plurality of RBs of the SC-OFDM symbol respectively; or, the modulation symbols are mapped to a plurality of single-carrier orthogonal frequency division multiplexing (SC-OFDM) symbols included in the resources in a mode of multiplying a time domain spreading sequence and a ZC sequence with a preset length, wherein the modulation symbols only occupy one RB on each SC-OFDM symbol;

mapping the UCI to more than two discrete RBs or Resource Elements (REs) in a system bandwidth of m single-carrier orthogonal frequency division multiple access (SC-OFDMA) symbols included in the resources, wherein m is a positive integer less than or equal to 4;

and mapping the UCI to the last s symbols of the special subframe or to t symbols which are preset microseconds after the downlink burst, wherein the values of s and t are positive integers less than 7.

15. The method of claim 1, wherein mapping the UCI onto the resource when the number of bits of the UCI is less than a predetermined value, and wherein transmitting the UCI on the resource using an unlicensed carrier comprises: repeatedly mapping the UCI onto a plurality of the RBs in the resource and transmitting the UCI on the resource by using the unlicensed carrier resource; and/or the presence of a gas in the atmosphere,

and transferring the UCI to a authorized carrier for transmission.

16. The method of claim 1, comprising at least one of:

the resources comprise a Physical Uplink Control Channel (PUCCH) and/or a Physical Uplink Shared Channel (PUSCH), wherein the PUCCH and the PUSCH are subjected to frequency division through different interleaving units;

and the resource comprises a Physical Uplink Control Channel (PUCCH), and when the PUCCH and a Sounding Reference Signal (SRS) are transmitted in the same subframe, the UCI is transmitted in a mode of discarding the SRS or in a mode of knocking off the corresponding frequency domain position of a symbol occupied by the SRS.

17. A method for sending Uplink Control Information (UCI), comprising:

determining a resource for transmitting UCI, wherein the resource comprises more than three clusters, or the resource comprises one or more interleaving units, and each interleaving unit comprises more than three discrete Resource Blocks (RBs);

and notifying the determined resources to a terminal, wherein the resources are used for the terminal to send the UCI.

18. The method of claim 17, wherein notifying the terminal of the determined resources comprises:

notifying the determined resources to the terminal through a high-level signaling;

and notifying the determined resources to the terminal through the downlink control information.

19. The method according to claim 17 or 18, wherein notifying the terminal of the determined resources comprises:

when the physical uplink control channel PUCCH formats of each RB contained in the interleaving unit are the same, allocating the same resource index to each RB in the interleaving unit, and informing the terminal of the resource index of the first RB in the interleaving unit; and/or the presence of a gas in the atmosphere,

and when the physical uplink control channel PUCCH formats of the RBs contained in the interleaving unit are different, notifying the terminal of the resource index of each RB in the interleaving unit.

20. The method of claim 19,

when the PUCCH format of each RB contained in the interleaving unit is the same and the resource index allocated to each RB in the interleaving unit is the same, the cyclic shift of the frequency domain spreading sequence of each RB is the same as that of the first RB, or each RB is shifted by a cyclic shift with the same size, wherein the cyclic shift is informed to the terminal through the resource; and/or the presence of a gas in the atmosphere,

and when the PUCCH format of the RB contained in the interleaving unit contains a time domain spreading code, the time domain spreading code is informed to the terminal through the resource, wherein the time domain spreading codes contained in the RBs with the same PUCCH format are the same.

21. The method of claim 19, wherein when a PUCCH format of each RB included in the interleaving unit is different or a resource index of each RB is different, the cyclic shift of the frequency domain spreading sequence of the RB and/or the time domain spreading code is determined according to the resource index of the RB.

22. The method of claim 17, wherein the resources comprise frequency domain resources and code domain resources.

23. The method of claim 17, wherein after determining the resources to transmit the UCI, the method further comprises: and informing the terminal of the physical uplink control channel PUCCH format of the RB.

24. The method of claim 23, wherein the PUCCH format for the RB comprises one of:

format1, format1a, format1b, format2a, format2b, format3, format4, and Format5, where PUCCH formats adopted by each resource block RB in the interleaving unit are all the same, or a PUCCH Format of a physical uplink control channel adopted by a part of RBs in the interleaving unit is a first Format, and PUCCH formats adopted by the rest of RBs are a second Format.

25. The method of claim 17, wherein one interlace unit comprises p RBs, and the p RBs are spaced by m RBs, wherein p is an integer greater than or equal to 3, m is a positive integer, and values of p and m are determined according to a system bandwidth.

26. The method according to claim 17, wherein the resources comprise a Physical Uplink Control Channel (PUCCH) and/or a Physical Uplink Shared Channel (PUSCH), wherein a subframe corresponding to the PUCCH comprises symbols occupied by a demodulation reference signal (DMRS) and the UCI, and wherein a structure of the subframe comprises at least one of:

one said subframe contains two DMRS symbols, symbols 3 and 10, respectively;

one such subframe contains four DMRS symbols, symbols 1,5, 8, and 12, respectively.

27. The method of claim 17, wherein the RB contains DMRSs for demodulation reference signals, and wherein the number and location of the DMRSs contained in the RB are determined by a format of a physical uplink control channel, PUCCH, of the RB.

28. The method of claim 17, wherein the UCI includes at least one of:

acknowledgement/non-acknowledgement, ACK/NACK, information for multiple processes for one or more carriers;

acknowledgement/non-acknowledgement, ACK/NACK, information for a plurality of subframes of one or more carriers;

periodic channel state information, CSI, of one or more carriers;

aperiodic channel state information, CSI, of one or more carriers;

a buffer status report BSR;

one or more bits for the base station and the terminal to keep acknowledgement/non-acknowledgement ACK/NACK reporting synchronization.

29. The method of claim 17 or 28, wherein when the UCI includes acknowledgement/non-acknowledgement, ACK/NACK, information corresponding to a physical downlink shared channel, PDSCH, of a plurality of subframes and the UCI is transmitted through one transmission subframe of the resources, a timing relationship between the transmission subframe and the plurality of subframes is determined by at least one of:

the nth + kth subframe sends ACK/NACK information of all PDSCH subframes corresponding to the terminal in the last downlink burst, wherein n is a positive integer, k is a positive integer, and the nth subframe is the last PDSCH subframe in the last downlink burst;

and sending the ACK/NACK information of all PDSCH subframes corresponding to the terminal in the downlink burst in the Nth TXOP by the uplink subframe in the (N + K) th transmission opportunity TXOP, wherein N is a positive integer, and K is a positive integer.

30. The method of claim 29, comprising at least one of:

k is 4;

the K is 1.

31. An apparatus for transmitting uplink control information UCI, comprising:

a first determining module, configured to determine a resource for transmitting UCI, where the resource includes three or more clusters, or the resource includes one or more interleaving units, and the interleaving units are composed of three or more discrete resource blocks RB;

a processing module, configured to map the UCI to the resource and send the UCI on the resource using an unlicensed carrier.

32. An apparatus for transmitting uplink control information UCI, comprising:

a second determining module, configured to determine a resource for transmitting UCI, where the resource includes three or more clusters, or the resource includes one or more interleaving units, and the interleaving units are composed of three or more discrete resource blocks RB;

and a notifying module, configured to notify the determined resource to a terminal, where the resource is used for the terminal to send the UCI.

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