CN107241802B

CN107241802B - Method and device for sending uplink control information UCI

Info

Publication number: CN107241802B
Application number: CN201610188092.XA
Authority: CN
Inventors: 李新彩; 赵亚军; 苟伟; 彭佛才; 毕峰; 杨玲
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-03-29
Filing date: 2016-03-29
Publication date: 2022-12-02
Anticipated expiration: 2036-03-29
Also published as: CN107241802A; WO2017167003A1

Abstract

The invention provides a method and a device for sending Uplink Control Information (UCI), wherein the method comprises the following steps: 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 (RB); and mapping the UCI to the resources, and transmitting the UCI on the resources by using an unlicensed carrier. The invention solves the problem that the regional regulation and the bandwidth occupied by the unauthorized carrier can not be met when UCI information is sent on the unauthorized carrier in the related technology, thereby achieving the effect of ensuring that 80 percent of the bandwidth occupied by the unauthorized carrier and the PSD regulation when UCI is sent.

Description

Method and device for sending uplink control information UCI

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for sending uplink control information UCI.

Background

The Long-Term Evolution (Long-Term Evolution, LTE for short) system uses an unlicensed carrier to work, which is an important content in the LTE Evolution process. The technology enables the LTE system to use the existing unlicensed carrier, greatly improves the potential spectrum resources of the LTE system, and enables the LTE system to obtain lower spectrum cost.

There are two main modes of LTE using unlicensed communication, one is Carrier Aggregation (CA), one is unlicensed as a secondary component Carrier access, and the other is an access mode using Dual Connectivity (DC). In both operating modes, a Physical Uplink Control Channel (PUCCH) may need to be sent on an unlicensed carrier.

The PUCCH of LTE in the related art supports multiple transmission formats, including Format 1/1a/1b/2 a/2b/3/5 occupying only one Resource Block (RB) at a time and Format4 occupying 1 to 8 consecutive RBs.

The modulation scheme 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 combination supported by each format is as follows:

normal CP (general cyclic prefix), for format1a, only 1-bit HARQ-ACK or 1-bit HARQ-ACK and SR combination can be transmitted;

the Format1b may be used to send a 2-bit HARQ-ACK or a 2-bit Hybrid Automatic Repeat Request-Acknowledgement (Hybrid Automatic Repeat Request-Acknowledgement, abbreviated as HARQ-ACK and Scheduling Request (abbreviated as SR)) combination;

when channel selection is enabled, format1b carries 4 bits of HARQ-ACK feedback at most: when not multiplexed with HARQ-ACK, format2 is used to transmit a Channel Quality Indication (CQI)/Precoding Matrix Indication (PMI) or a Rank Indication (RI);

the Format2a is used for sending the multiplexing of the CQI/PMI or the RI and the HARQ-ACK of 1 bit;

format2b is used for sending CQI/PMI or RI multiplexed with 2-bit HARQ-ACK;

format2 is used for sending CQI/PMI or RI multiplexed with HARQ-ACK;

format3 is used to send HARQ-ACK of at most 10 bits in a Frequency Division Duplex (FDD) system or HARQ-ACK of at most 20 bits in a TDD system;

format4 is used to send HARQ-ACK and/or periodic Channel State Information (CSI) of multiple carriers;

format5 is used to send HARQ-ACK and/or periodic CSI for multiple carriers.

According to the requirements of national regional regulation, a terminal needs to make Listen Before Talk (LBT) before Uplink data (such as Uplink Control Information (UCI) is transmitted) on an unlicensed carrier, and transmit data needs to meet the regulation requirement of 80% occupied bandwidth and Power Spectrum Density (PSD), but the PUCCH structure of LTE currently only occupies one RB of the boundary of the system bandwidth or several consecutive RBs, which cannot meet the regulation requirement.

Aiming at the problems that the regional regulation and the bandwidth occupied by the unauthorized carrier cannot be met when UCI information is sent on the unauthorized carrier in the related technology, an effective solution is not provided at present.

Disclosure of Invention

The invention provides a UCI sending method and device, which at least solve the problems that the regional regulation and the bandwidth occupied by an unauthorized carrier cannot be met when UCI information is sent on the unauthorized carrier in the related technology.

According to an aspect of the present invention, there is provided a method for transmitting uplink control information UCI, including: determining a resource for transmitting UCI, wherein the resource comprises more than three clusters, or the resource comprises one or more interleaving units, and the interleaving units consist 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.

Optionally, determining the resources for transmitting the UCI includes 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.

Optionally, determining resources for transmitting UCI includes: determining the number of one or more of the interleaving units and the resource index within each RB within the interleaving unit; and determining the resources according to the numbers and the resource indexes.

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 physical uplink control channel interleaving unit comprises Format1, format1a, format1b, format2a, format2b, format3, format4 and Format5, wherein the PUCCH formats adopted by each resource block RB in the interleaving unit are the same, or the PUCCH Format adopted by a part of the RBs in the interleaving unit is a first Format, and the PUCCH formats adopted by the rest RBs are second formats.

Optionally, the method further comprises: 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.

Optionally, one interleaving unit includes p RBs, where 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.

Optionally, all RBs in one interleaving unit use the same code sequence when transmitting the UCI.

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

Optionally, the RB contains a demodulation reference signal DMRS, and the number and the position of the DMRSs contained in the RB are determined by a format of a physical uplink control channel, PUCCH, of the RB.

Optionally, 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 the acknowledgement/non-acknowledgement ACK/NACK reporting synchronized.

Optionally, when the UCI includes ACK/NACK information corresponding to a PDSCH (physical downlink shared channel) of multiple subframes and the UCI is transmitted through one transmission subframe in the resource, a timing relationship between the transmission subframe and the multiple subframes is determined by at least one of the following manners: 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.

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

Optionally, mapping the UCI onto the resource comprises at least one of: dividing the UCI into two or more groups; performing packet mapping on the resources according to the groups into which the UCI is divided, wherein the packet mapping comprises at least one of the following: 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 with different physical uplink control channel PUCCH formats; processing the UCI coding 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.

Optionally, when the number of bits of the UCI is less than a predetermined value, mapping the UCI onto the resource, and transmitting the UCI on the resource using an unlicensed carrier includes: 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 transferring the UCI to a authorized carrier for transmission.

Optionally, the method comprises 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; the resources comprise 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 out the corresponding frequency domain position of a symbol occupied by the SRS.

According to another aspect of the present invention, there is provided a method for transmitting uplink control information UCI, including: determining a resource for transmitting UCI, wherein the resource comprises more than three clusters, or the resource comprises one or more interleaving units, and the interleaving units consist of 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.

Optionally, notifying the determined resource to the terminal includes: 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.

Optionally, notifying the terminal of the determined resource includes: 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 resource index of the first RB in the interleaving unit to the terminal; and/or 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.

Optionally, when the PUCCH formats of each RB included in the interleaving unit are 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 offset by a cyclic shift of the same size, where the cyclic shift is informed to the terminal through the resource; and/or 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.

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 the time domain spreading code of the frequency domain spreading sequence of the RB are determined according to the resource index of the RB.

Optionally, after determining the resource to transmit the UCI, the method further comprises: and informing the terminal of the physical uplink control channel PUCCH format of the RB.

Optionally, the PUCCH format of the RB includes 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.

Optionally, the resource includes a physical uplink control channel PUCCH and/or a physical uplink shared channel PUSCH, where a subframe corresponding to the PUCCH includes a demodulation reference signal DMRS and a symbol occupied by the UCI, and a structure of the subframe includes 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.

Optionally, when the UCI includes ACK/NACK information corresponding to a PDSCH (physical downlink shared channel) of multiple subframes and the UCI is transmitted through one transmission subframe in the resource, a timing relationship between the transmission subframe and the multiple subframes is determined by at least one of the following manners: 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.

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

According to another aspect of the present invention, there is provided an apparatus for transmitting uplink control information UCI, including: 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.

According to another aspect of the present invention, there is provided an apparatus for transmitting uplink control information UCI, including: 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 each interleaving unit includes 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.

As can be seen from the present invention, the resource for transmitting UCI includes three or more clusters, or one or more interleaving units, and each interleaving unit is composed of three or more discrete resource blocks RB. Therefore, when the UCI is sent by using the resources, the control requirements of 80% occupied bandwidth of the unauthorized carrier and PSD can be realized, and the problems that the regional control and the bandwidth occupied by the unauthorized carrier cannot be met when UCI information is sent on the unauthorized carrier in the related technology are solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:

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

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

fig. 3 is a PUCCH channel structure diagram i;

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

fig. 5 is a PUCCH channel structure diagram ii;

fig. 6 is a schematic diagram of a PUCCH channel structure three;

fig. 7 is a first diagram illustrating uplink control information transmission;

fig. 8 is a diagram illustrating uplink control information transmission;

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

FIG. 10 is a diagram illustrating a timing relationship between ACK/NACK and PDSCH;

fig. 11 illustrates a location of a PUCCH in a subframe;

fig. 12 is a diagram illustrating the position of the PUCCH in a subframe;

fig. 13 illustrates a location of a PUCCH in a subframe;

fig. 14 illustrates a position of a PUCCH in a subframe;

fig. 15 is a block diagram of a transmitting apparatus of a first UCI according to an embodiment of the present invention;

fig. 16 is a block diagram of a transmitting apparatus of a second UCI according to an embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the drawings and embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In this embodiment, a method for transmitting UCI is provided, and fig. 1 is a flowchart of a first method for transmitting UCI according to an embodiment of the present invention, as shown in fig. 1, the flowchart includes the following steps:

step S102, determining a resource for transmitting UCI, wherein the resource comprises more than three clusters, or the resource comprises 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 transmitting the UCI on the resource by using an unauthorized carrier.

Among them, it may be the terminal that performs the above operation.

Through the steps, the resource for sending the UCI comprises more than three clusters, or comprises one or more interleaving units, each interleaving unit consists of more than three discrete RBs, the specific number of the RBs can be determined according to the system bandwidth, and when the UCI is sent by using the resource of the type, the requirement that an unauthorized carrier occupies 80% of the bandwidth and the control requirement of a PSD can be ensured when the UCI is sent, so that the problems that the regional control and the bandwidth occupied by the unauthorized carrier cannot be met when UCI information is sent on the unauthorized carrier in the related technology are solved.

In an optional embodiment, determining the resource for transmitting the UCI includes at least one of: determining a resource for transmitting UCI through a received higher layer signaling from a base station; determining the resource for transmitting UCI according to the determined position of a Physical Downlink Control Channel (PDCCH); the resource for transmitting UCI is determined by downlink control information received from the base station. The three determination manners are only some preferred resource determination manners, and in practical applications, other manners may also be used to determine the resource for sending the UCI, for example, the determination is performed by a negotiation manner between the base station and the terminal.

In an alternative embodiment, determining resources for transmitting UCI includes: determining the number of one or more interleaving units and the resource index in each RB in the interleaving unit; and determining the resource according to the 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, may be determined by negotiation between the base station and the terminal, or may be determined by other means.

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

In an optional embodiment, the physical uplink control channel PUCCH format of the RB includes 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. In this embodiment, the PUCCH formats of the plurality of RBs in the interleaving unit may all be the same, or all be different, or partially the same, and the PUCCH format of the RB may be consistent with the existing PUCCH format.

In an optional embodiment, the method further includes: determining a PUCCH format of the RB by at least one of: determining the PUCCH format of the RB in a mode indicated by the base station, wherein the PUCCH format of the RB is determined by the base station according to the number of the unauthorized carriers; and determining the PUCCH format of the RB according to the bit number of the UCI.

In an optional embodiment, one interleaving unit includes p RBs, the p RBs are all separated 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. In this embodiment, when determining the values of p and m, the determination is performed based on 80% of the occupied bandwidth.

In an alternative embodiment, when all RBs in one interleaving unit perform UCI transmission, the code sequence used in the UCI transmission is the same, and the code sequence is one of a plurality of code sequences, and the plurality of code sequences satisfy the property that different cyclic shifts of the same sequence are orthogonal, that is, the plurality of code sequences are formed by different cyclic shifts of the same sequence.

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

In an optional embodiment, the RB contains a DMRS, and the number and the position of the DMRSs contained in the RB are determined by a format of a physical uplink control channel, PUCCH, of the RB.

In an alternative embodiment, 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) for one or more carriers; aperiodic channel state information, CSI, of one or more carriers; buffer State Report (BSR); one or more bits for the base station and the terminal to keep the acknowledgement/non-acknowledgement ACK/NACK reporting synchronized.

In an optional embodiment, when the UCI includes acknowledgement/non-acknowledgement ACK/NACK information corresponding to a Physical Downlink Shared Channel (PDSCH) of multiple subframes and the UCI is transmitted through one transmission subframe in resources, a timing relationship between the transmission subframe and the multiple subframes is determined by at least one of the following manners: 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 an uplink subframe in an (N + K) th Transmission Opportunity (TXOP), wherein N is a positive integer, and K is a positive integer.

In an alternative embodiment, k is 4; and/or, K is 1.

In an optional embodiment, mapping the UCI onto the resource includes at least one of: dividing the UCI into more than two groups; performing packet mapping on 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 with different physical uplink control channel PUCCH formats; UCI coding modulation is processed into modulation symbols; mapping the modulation symbol to a plurality of RBs of a Single-Carrier Orthogonal Frequency Division Multiplexing (SC-OFDM) symbol included in the resource in a manner of multiplying the modulation symbol by a predetermined sequence, wherein the predetermined sequence is different sequences corresponding to the plurality of RBs of the SC-OFDM symbol respectively; or, mapping the modulation symbols 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 after a predetermined microsecond after the downlink burst, wherein 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 processes the information according to bit information that can be carried by a 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 onto the resource, and transmitting the UCI on the resource using an unlicensed carrier includes: repeatedly mapping UCI to a plurality of RBs in resources, and transmitting the UCI on the resources by using the unlicensed carrier resources; and/or transferring the UCI to a authorized carrier for transmission.

In an alternative embodiment, the method includes 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; the resources include a Physical Uplink Control Channel (PUCCH), and when the PUCCH and a Sounding Reference Signal (SRS) are transmitted in the same subframe, UCI is transmitted by dropping the SRS, or the UCI is transmitted by dropping a corresponding frequency domain position of a symbol occupied by the SRS.

In this embodiment, a method for sending UCI is further provided, and 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 flowchart includes the following steps:

step S202, determining a resource for transmitting UCI, wherein the resource comprises more than three clusters, or the resource comprises one or more interleaving units, and the interleaving units comprise more than three discrete Resource Blocks (RB);

step S204, notifying the terminal of the determined resource, wherein the resource is used for the terminal to transmit the UCI.

Wherein, it may be the base station to perform the above operations.

Through the steps, the resource for sending the UCI comprises more than three clusters, or comprises one or more interleaving units, each interleaving unit consists of more than three discrete RBs, the specific number of the RBs can be determined according to the system bandwidth, and when the terminal sends the UCI by using the resource of the type, the requirement that the unauthorized carrier occupies 80% of the bandwidth and the control requirement of the PSD can be ensured when the UCI is sent, so that the problems that the regional control and the bandwidth occupied by the unauthorized carrier cannot be met when UCI information is sent on the unauthorized carrier in the related technology are solved.

In an optional embodiment, notifying the determined resource to the terminal includes: notifying the determined resources to the terminal through a high-level signaling; and informing the determined resources to the terminal through the downlink control information.

In an optional embodiment, notifying the determined resource to the terminal includes: 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 when the physical uplink control channel PUCCH formats of the RBs contained in the interleaving unit are different, notifying the resource index of each RB in the interleaving unit to the terminal.

In an alternative embodiment, when the PUCCH formats of each RB included in the interleaving unit are 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 of the same size, where the cyclic shift is informed to the terminal by the resource, that is, when the resource is informed to the terminal, the cyclic shift can be informed to the terminal together; and/or, when the PUCCH format of the RB included in the interleaving unit includes a time-domain spreading code, the time-domain spreading code is notified to the terminal through the resource, wherein the time-domain spreading codes included in the RBs of the same PUCCH format are the same, that is, when the resource is notified to the terminal, the time-domain spreading code may be notified to the terminal together.

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 and/or the time domain spreading code of the frequency domain spreading sequence of the RB is determined according to the resource index of the RB.

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

In an optional embodiment, the PUCCH format of the RB includes 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 remaining RBs are second formats.

In an optional embodiment, one interleaving unit includes p RBs, the p RBs are all 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.

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

In an alternative embodiment, 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 the acknowledgement/non-acknowledgement ACK/NACK reporting synchronized.

In an optional embodiment, when the UCI includes ACK/NACK information corresponding to a PDSCH (physical downlink shared channel) of multiple subframes and the UCI is transmitted through one transmission subframe in the resources, a timing relationship between the transmission subframe and the multiple subframes is determined by at least one of the following manners: 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.

In an alternative embodiment, k is 4; and/or, K is 1.

The following describes in detail a method for transmitting unlicensed spectrum uplink control information according to an embodiment of the present invention.

The first embodiment is as follows:

this embodiment explains the resource, structure, and configuration of the PUCCH.

Each UE is allocated with a PUCCH channel, and the PUCCH channel occupies M equally-spaced and discrete RBs, and the number of the spaced RBs is N. For example, for a system bandwidth of 20M, both M and N have a value of 10, and as shown in fig. 3, one PUCCH channel occupies 10 RBs numbered 0,10,20,30,40,50,60,70,80,90, which may constitute one interleaving unit, and the interleaving unit is numbered 0. The interleaving unit numbered 1 includes RB1, 11,21,31,41,51,61,71,81, 91. The PUCCH channel of each UE occupies one interleaving unit, i.e., 10 RBs.

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

Or, when the content carried by the PUCCH contains 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 in a frequency division mode, and the resources of the PUCCH are avoided when the base station schedules the PUSCH or allocates PUSCH resources to the UE.

Example two

This embodiment explains a format adopted by the PUCCH.

The channel structure of the PUCCH is shown in fig. 4, each PUCCH channel includes a plurality of RBs, and the structure adopted by each RB is still the original PUCCH format of R13.

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

the first method comprises the following steps: the pre-defined or semi-static configuration of the high-level signaling of the base station only contains one format for a certain interleaving unit. That is, the formats of each RB are the same, for example, both formats are format2, or both formats are format2a, or both formats are format2b, or both formats are format5, or both formats are format4.

And the second method comprises the following steps: the base station configures a certain interleaving unit to contain multiple formats, and formats adopted by different RBs can be different. For example, some RBs of a certain interleaving unit are format1, some RBs are format2, or some RBs adopt format3, some RBs adopt format2, or some RBs adopt format1, and some RBs adopt format4 or format5.

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

Different UEs on the same RB can only use the same format in order to achieve multi-user orthogonal multiplexing.

Each UE performs PUCCH resource Code division multiplexing within one interleaving resource by different interleaving index frequency domain multiplexing and different frequency domain spreading codes within the same interleaving index, and/or Orthogonal Convolutional Codes (OCC).

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

ACK/NACK of a plurality of processes or a plurality of subframes of one carrier; periodic CSI information or aperiodic CSI information of one or more carriers; a BSR; the extra bit is used for keeping ACK/NACK reporting synchronization between the base station and the UE.

The information processing process of the UCI comprises the following two modes:

the first method is as follows: the UCI information is grouped first, one group may be mapped to multiple RBs finally, and different groups are mapped to different RBs or carried through different formats.

And then, carrying out coding rate matching on the UCI information of each group according to bit information which can be carried by a format corresponding to the mapped RB, and then scrambling, modulating and mapping.

The second method comprises the following steps: the UCI information is repeatedly transmitted over a plurality of RBs. And each RB processes the UCI processing mode according to the format adopted by the RB.

EXAMPLE III

In this embodiment, a case where the PUCCH includes only one of format2/2a/2b, or two or three formats of format2/2a/2b is described.

Each RB of the PUCCH is defined through a system pre-defined mode or a mode of base station high-level RRC signaling configuration, and UCI processing is carried out in a format2/2a/2b processing mode. The PUCCH structure is shown in fig. 5. Each RB uses the same one of the formats, e.g., all RBs of one interleaved unit are in format2, or in format2a or in format2b. Or each RB may use a different format, for example, RB with index 0 may use format2, RB with index 10 may use format2a, and RB with index 20 may use format2b.

Each subframe of the PUCCH adopting the format2/2a/2b comprises 4 DMRS symbol positions, and the specific positions are the same as the existing positions.

When UCI comprises CSI (channel state information) such as ACK/NACK (acknowledgement/negative acknowledgement), CQI (channel quality indicator), PMI (precoding matrix indicator), RI (rank indication) and the like, uplink control information can be sent through format2/2a/2 b. The specific information processing process is as follows:

the UCI information is equally divided into 10 groups, then each group is mapped to different RB, each group carries out corresponding information processing, coding, scrambling and modulation according to the format corresponding to the RB, then the frequency domain is multiplied by a ZC sequence for spreading, and finally the frequency domain is mapped to a corresponding SC-OFDM symbol of one RB.

Wherein, the ZC sequence used by each RB is determined as follows:

the method I comprises the following steps: the ZC sequences of all RBs are the same.

The second method comprises the following steps: the root sequences of ZC sequences of all RBs are the same, and the cyclic shift employed by each RB is different.

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

The third method comprises the following steps: the spread spectrum sequences used by all RBs are obtained by intercepting the same ZC sequence.

For example, the PUCCH occupies 10 RBs in one interleaving unit, and the spreading sequence in each RB is obtained by truncating 12 values at different positions from the same ZC sequence of length 120, where the values are N (0), N (1), N (2), N (3), \8230; (82119). The first RB of the interleaved unit is the sequence N (0) to N (11), the second RB is the sequence N (12) to N (23), and so on.

When the UCI information is less than 10 bits, the processing mode is as follows:

the first method is as follows: each RB repeatedly transmits the UCI information. I.e. the content of the final SC-OFDM symbol is the same on all RBs contained in the PUCCH.

The second method comprises the following steps: the UCI information is divided into p groups, p being smaller than 10, e.g. p being 2 or 5. Each group repeat is then mapped onto multiple RBs. And the data of each RB is spread according to the sequence corresponding to the RB.

Example four

This embodiment describes a resource mapping method when uplink control information is carried on the PUCCH format4.

The originally reserved configuration 7 of the extended configuration PUCCH format4 is used to support that the PUCCH occupies one interleaving unit or 10 RBs at discrete equal intervals. And 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 interleaving units occupied by the PUCCHs of different UEs are different. Or different UEs in the format can only be multiplexed in a frequency division manner.

And then UCI of different bits performs data generation of 10 RBs and 12 OFDM symbols through coding rate matching, then performs data scrambling and QPSK modulation processing according to the conventional format4 mode to generate modulation symbols, and then maps the modulation symbols onto SC-OFDM symbols of 10 RBs with discrete equal intervals.

For example, if the interleaving unit occupied by the PUCCH allocated to a certain UE in the higher layer signaling configuration is number 1, the RB index occupied by the PUCCH channel is 1,11,21,31,41,51,61,71,81,91, and the index mapped to the subcarrier includes k =12,13,14 \8230; (8230);.

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

EXAMPLE five

This embodiment explains a case where the PUCCH is in format5 (i.e., format 5) for each RB.

Each RB of the PUCCH is defined by a system predefined manner or a manner of base station high-level Radio Resource Control (RRC) signaling configuration, and UCI is processed by using a format5 processing manner. The PUCCH structure is shown in fig. 6. Each subframe contains 2 DMRS symbol positions, located at symbol 3 and symbol 10.

Alternatively, the UCI information processing procedure may be as follows:

the UCI information is equally divided into 10 groups, and then each group is mapped onto a different RB, and each group performs corresponding information processing, coding, scrambling, modulation, and then mapping onto SC-OFDMA symbols in a format5 manner.

The multiplexing can be realized by configuring different interleaving units for frequency division or the same frequency domain resource for code division by a plurality of UEs.

EXAMPLE six

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

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

When the number of carriers configured by the UE is less than a predefined threshold n1, or the number of bits of the UCI is less than a predefined threshold m1, the PUCCH adopts format2/2a/2 b.

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

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

When the UCI information only contains ACK/NACK information, the format1a/1b and/or the format3 or the format4 or the format5 are adopted.

When UCI information contains CSI and ACK/NACK multiplexing, format2/2a/2b and/or format4 or format5 are adopted.

EXAMPLE seven

This embodiment explains information processing of UCI with a smaller number of bits.

When the number of UCI bits fed back by a certain carrier is less, one of the following methods is adopted for processing:

the first method is as follows: and turning to the PCell transmission of the authorized carrier primary cell.

The second method comprises the following steps: and is transmitted in a repeated manner.

Specifically, the UCI information is repeatedly transmitted over a plurality of RBs, and the information processing process of the UCI is performed according to the existing PUCCH format corresponding to the RB.

The third method comprises the following steps:

all UCI information is coded together in a predefined coding, then scrambled by a UE-specific scrambling sequence, and QPSK modulated, and then each modulated symbol is mapped onto RBs of one SC-OFDM symbol by multiplying different sequences corresponding to different RBs, as shown in fig. 7. And no frequency hopping is supported any more between slots, the sequence of each RB is still a CG sequence of length 12.

Alternatively, the sequence design of each RB may be as follows:

each RB employs a different cyclic shift of the same sequence. Different UEs may have different cyclic shifts of the first RB, and the base station only gives the cyclic shift of the first RB when configuring the UEs, and the subsequent RBs are all predefined shifts of the same length, so the subsequent RBs are also orthogonal. In time domain, the original symbol-based sequence frequency hopping mode is still adopted.

The method four comprises the following steps: all UCI information may be coded together in a predefined coding scheme, then scrambled by a UE-specific scrambling sequence, and modulated by QPSK, then each modulated symbol is multiplied by a time-domain spreading sequence, then each RB is multiplied by a ZC sequence of length 12, and then mapped onto a plurality of SC-OFDM symbols, each modulation symbol occupying only one RB of an SC-OFDMA symbol, as shown in fig. 8. Frequency hopping is still supported between time slots to obtain frequency diversity gain.

Example eight

In this embodiment, UCI is encoded according to the original format3 processing method, scrambled, and modulated to generate mapping data of one RB.

Then the data processing method of the remaining RB mapping comprises the following steps: before Discrete Fourier Transform (DFT) Transform, cyclic shifts of different lengths are performed on the y (n) content of one RB.

Assuming that symbol data generated by the UCI in format3 is y (n), the content transmitted by the first RB is DFT on y (n) directly, and cyclic shift of a predefined length is performed on y (n) before DFT is performed on the content of the second and other RBs, where the shift lengths of different RBs are different.

For example, the second RB cyclic shift length is 1, the third RB cyclic shift length is 2, the content cyclic shift length of the sixth RB transmission is 6, and y (n) after the shift is converted into:

in this scheme, the initial UCI information transmitted by different RBs is the same, but each RB cyclically shifts the transmitted modulated symbols before DFT. In this manner, frequency hopping is no longer supported between time slots since the same content has been transmitted at different frequency locations.

Example nine

This embodiment describes a carrier grouping method for PUCCH.

When the UE supports simultaneous transmission of only two PUCCHs, the carrier grouping employs one of:

the method comprises the following steps: the unlicensed carriers are in a group, and the licensed carriers are in a group. One PUCCH per group, UCI of multiple carriers is transmitted through PUCCH of one carrier.

The second method comprises the following steps: a set of licensed carriers + partially unlicensed carriers. And a group of the remaining unlicensed carriers.

The third method comprises the following steps: and PCell group. And one group of the rest carriers is selected, and the non-authorized carrier transmission PUCCH only feeds back ACK/NACK of the local carrier or the non-authorized carrier group. ACK/NACK of the licensed carrier is fed back only through the PCell.

And the UCI of the unauthorized carrier wave is transmitted through authorization when the number of bits is less, and is transmitted through the unauthorized when the number of bits is more.

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

the carriers are authorized for a group. Some of the unlicensed carriers are grouped into one group, and the remaining unlicensed carriers are grouped into one group. UCI information of each carrier is transmitted through its own PUCCH.

EXAMPLE ten

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

When one subframe can feed back ACK/NACK corresponding to a plurality of subframes PDSCH, the timing relationship is determined by one of the following ways:

the first method is as follows: as shown in fig. 9, the determination is determined according to the principle that the last downlink PDSCH subframe of the previous downlink burst is increased by 4. And the n + k subframe feeds back the demodulation structures of all PDSCH subframes of the UE in the last downlink burst.

The second method comprises the following steps: as shown in fig. 10, a cross-burst feedback manner is adopted. And feeding back the demodulation results of all PDSCH subframes in the downlink burst in the Nth TXOP by the uplink subframe in the (N + 1) th Transmission Opportunity (TXOP).

EXAMPLE eleven

The present embodiment describes a transmission method for spreading uplink control information time domain length compressed frequency domain resources.

The uplink control information can be mapped to a PUCCH channel of two or three symbols for transmission. Or by a new PUCCH transport format. At this time, the resources of different PUCCHs are frequency-divided by different REs or RBs. Each PUCCH channel occupies a discrete number of 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 method comprises the following steps: the PUCCH starts transmission from the middle of a subframe, or the PUCCH and downlink belong to the same subframe, and the subframe structure is shown in fig. 11. The uplink subframe is located at the end position of the downlink partial subframe. Wherein, GP is the time for uplink and downlink switching and CCA of UE.

And the second method comprises the following steps: the PUCCH starts 16 microseconds after the DL burst, where 16 microseconds is used for transmit-receive time for downlink to uplink conversion, as shown in fig. 12. The time domain length of the PUCCH is 2 to 4 OFDM symbols.

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

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

The UCI process is as follows:

and if the ACK/NACK information corresponding to the PUCCH group is transmitted, the ACK/NACK information of the carriers is cascaded, and 1 bit or 2 bits are used for representing the ACK/NACK of each carrier.

Optionally, when ACK/NACK corresponding to multiple PDSCHs included in a Downlink (DL) burst on the same carrier is fed back at a time, ACK/NACK information of packets of the multiple PDSCHs is also cascaded according to a sequence of subframes, and then multiple carriers are cascaded together. After the original information is coded by a sequence, modulation symbols are generated by QPSK modulation and are mapped to REs corresponding to PUCCH.

When the channel also carries Channel Quality Indicator (CQI) information, the information may be CQIs of multiple carriers of the PUCCH group, in this case, the CQIs of the multiple carriers are concatenated first, then are subjected to sequence coding, and then the ACK/NACK information is appended to the coded CQI information, and then are subjected to Quadrature Phase Shift Keying (QPSK) modulation to generate a modulation symbol. And then performing resource mapping according to the occupied RE of the PUCCH.

In the frequency domain, the frequency domain positions mapped by the PUCCHs of part of the sub-frames are discrete M REs or RBs with equal intervals, and the requirement that the whole frequency domain at least accounts for 80% of the system bandwidth is met.

Or an information processing method similar to a Physical Hybrid ARQ Indicator Channel (PHICH) is adopted.

Example twelve

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

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

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

the first method is as follows: when the RBs contained in the allocated interleaving units adopt the same PUCCH format, the base station only gives the resource index of the first RB, and other RBs are the same.

The second method comprises the following steps: when the RBs contained in the allocated interleaving unit adopt different PUCCH formats, the base station gives a resource index of each RB.

The method for determining the code domain resource adopted by each RB comprises the following steps:

when the PUCCH formats of each RB of the interleaving unit are the same and the resource indexes allocated to the UEs are 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 is offset by a cyclic shift of the same size. The UE implicitly obtains the size of the cyclic shift through PUCCH resources allocated by the base station.

When the adopted format comprises a time domain spreading code, the time domain spreading code of the UE implicitly obtains a code index through PUCCH resources allocated by the base station. And the spreading codes of the same format of other RBs 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 and/or the time domain spreading code of the frequency domain spreading sequence of each RB of the UE are determined according to the resource index of the RB.

Thirteen examples

This embodiment explains the PUCCH with different time domain lengths in the eleventh embodiment.

The system may predefine a variety of PUCCH structures containing different numbers of symbols. For example, the number of symbols of the predefined short PUCCH is 7, 2, 3, 4. Short PUCCHs of other different symbols can be obtained by combining the different numbers of symbols.

For example, as shown in fig. 14. When the number of remaining symbols of the last subframe of the downlink burst is 11, 10 symbols may transmit the PUCCH. It can be implemented by transmitting one PUCCH of 7 symbols and a PUCCH structure of 3 symbols.

The PUCCH structure of 7 symbols is identical to the existing PUCCH structure of one slot. The middle PUCCH structure of 3 symbols is DMRS, and both sides send UCI. The PUCCH structure with 2 symbols is one symbol DMRS and the other symbol transmits UCI. The PUCCH time domain structure of 4 symbols is that two symbols in the middle are DMRS, two sides are UCI, or two DMRS are separated and UCI is placed in the middle.

In this embodiment, a UCI sending apparatus is further provided, and the apparatus is used to implement the foregoing embodiments and preferred embodiments, and details of which have been already described are not repeated. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware or a combination of software and hardware is also possible and contemplated.

Fig. 15 is a block diagram of a transmitting apparatus of a first UCI according to an embodiment of the present invention, and as shown in fig. 15, the apparatus includes a first determining module 152 and a processing module 154, and the apparatus is explained as follows:

a first determining module 152, 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 154, connected to the first determining module 152, is configured to map the UCI onto a resource and transmit the UCI on the resource using an unlicensed carrier.

In an optional embodiment, the first determining module 152 may determine the resource for transmitting the UCI by at least one of: determining a resource for transmitting UCI through a received higher layer signaling from a base station; determining the resource for transmitting UCI according to the determined position of a Physical Downlink Control Channel (PDCCH); determining resources for transmitting UCI through downlink control information received from a base station. The three determination manners are only some preferred resource determination manners, and in practical applications, other manners may also be used to determine the resource for sending the UCI, for example, the determination is performed by a negotiation manner between the base station and the terminal.

In an alternative embodiment, the first determining module 152 may determine the resource for transmitting UCI by: determining the number of one or more interleaving units and the resource index in each RB in the interleaving unit; and determining the resource according to the 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, may be determined by negotiation between the base station and the terminal, or may be determined by other means.

In an optional embodiment, the apparatus further includes a format determining module, configured to determine a PUCCH format of the RB by at least one of: determining the PUCCH format of the RB in a mode indicated by the base station, wherein the PUCCH format of the RB is determined by the base station according to the number of the unauthorized carriers; and determining the PUCCH format of the RB according to the bit number of the UCI.

In an optional embodiment, one interleaving unit includes p RBs, the p RBs are all separated 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. In this embodiment, when values of p and m are determined, the values are determined based on 80% occupied bandwidth.

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

In an alternative embodiment, 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.

In an optional embodiment, when the UCI includes ACK/NACK information corresponding to a PDSCH (physical downlink shared channel) of multiple subframes and the UCI is transmitted through one transmission subframe in resources, a timing relationship between the transmission subframe and the multiple subframes is determined by at least one of the following manners: 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.

In an alternative embodiment, k is 4; and/or, K is 1.

In an alternative embodiment, the processing module 154 may map the UCI to a resource by at least one of: dividing the UCI into more than two groups; performing packet mapping on 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); UCI coding modulation is processed into modulation symbols; mapping the modulation symbol to a plurality of RBs of a single-carrier orthogonal frequency division multiplexing (SC-OFDM) symbol included in the resources in a mode of multiplying a predetermined sequence, wherein the predetermined sequence is different sequences respectively corresponding to the plurality of RBs of the SC-OFDM symbol; or, mapping the modulation symbols 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 UCI to more than two discrete RBs or resource particles (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. In the first mapping method of this embodiment, UCI information of each group processes information according to bit information that can be carried by a format corresponding to a mapped RB.

In an alternative embodiment, when the number of bits of the UCI is less than a predetermined value, the processing module 154 may map the UCI onto the resource and transmit the UCI on the resource using an unlicensed carrier by: repeatedly mapping UCI to a plurality of RBs in resources, and transmitting the UCI on the resources by using the unlicensed carrier resources; and/or, the apparatus further includes a sending module, configured to forward the UCI to a licensed carrier for sending.

In an alternative embodiment, at least one of the following is included: 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; the resources comprise 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 the UCI is transmitted in a mode of discarding the corresponding frequency domain position of a symbol occupied by the SRS.

Fig. 16 is a block diagram of a transmitting apparatus of a second UCI according to an embodiment of the present invention, and as shown in fig. 16, the apparatus includes a second determining module 162 and a notifying module 164, and the apparatus is explained as follows:

a second determining module 162, 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 notifying module 164, connected to the second determining module 162, configured to notify the determined resource to the terminal, where the resource is used for the terminal to send the UCI.

In an alternative embodiment, the notifying module 164 may notify the determined resource to the terminal by: notifying the determined resources to the terminal through a high-level signaling; and informing the determined resources to the terminal through the downlink control information.

In an alternative embodiment, the notifying module 164 may notify the determined resource to the terminal by: when the physical uplink control channel PUCCH formats of each RB contained in the interleaving unit are the same, allocating the same resource index for each RB in the interleaving unit, and informing the resource index of the first RB in the interleaving unit to a terminal; and/or when the physical uplink control channel PUCCH formats of the RBs contained in the interleaving unit are different, informing the terminal of the resource index of each RB in the interleaving unit.

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 and/or the time domain spreading code of the frequency domain spreading sequence of the RB are determined according to the resource index of the RB.

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

In an optional embodiment, the PUCCH format of the RB includes 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.

In an optional embodiment, one interleaving unit includes p RBs, where 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.

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

In an optional embodiment, when the UCI includes ACK/NACK information corresponding to a PDSCH (physical downlink shared channel) of multiple subframes and the UCI is transmitted through one transmission subframe in the resource, a timing relationship between the transmission subframe and the multiple subframes is determined by at least one of the following manners: 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.

In an alternative embodiment, k is 4; and/or, K is 1.

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

It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in a plurality of processors.

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

s1, determining a resource for transmitting UCI, wherein the resource comprises more than three clusters, or the resource comprises one or more interleaving units, and the interleaving units consist of more than three discrete Resource Blocks (RB);

and S2, mapping the UCI to the resources, and transmitting the UCI on the resources by using an unauthorized carrier.

Optionally, the storage medium is further arranged to store program code for performing the steps of:

s1, determining a resource for sending 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 (RB);

and S2, notifying the determined resources to the terminal, wherein the resources are used for the terminal to send the UCI.

Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing program codes, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.

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

Optionally, for a specific example in this embodiment, reference may be made to the examples described in the above embodiment and optional implementation, and this embodiment is not described herein again.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

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:

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:

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;

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:

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.