CN109699080B

CN109699080B - Resource mapping method of uplink control information and user equipment

Info

Publication number: CN109699080B
Application number: CN201711002014.7A
Authority: CN
Inventors: 郑辰; 冯绍鹏
Original assignee: Potevio Information Technology Co Ltd
Current assignee: Potevio Information Technology Co Ltd
Priority date: 2017-10-24
Filing date: 2017-10-24
Publication date: 2023-06-27
Anticipated expiration: 2037-10-24
Also published as: CN109699080A

Abstract

The embodiment of the invention provides a resource mapping method of uplink control information and user equipment. The method comprises the following steps: determining a target subframe for mapping uplink control information UCI in channel resources of a physical uplink shared channel PUSCH; acquiring resource mapping configuration information corresponding to a frame structure of the target subframe; determining a target symbol for bearing UCI in the target subframe; performing UCI resource mapping in a target symbol in the target subframe according to the resource mapping configuration information; the frame structure of the target subframe specifically includes: a subframe structure containing 2 symbols or a subframe structure containing 7 symbols. The user equipment is used for executing the method. The method and the user equipment provided by the embodiment of the invention are suitable for UCI resource mapping of a short TTI structure containing 2 symbols or 7 symbols, and are convenient for reducing uplink transmission delay.

Description

Resource mapping method of uplink control information and user equipment

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a resource mapping method of uplink control information and user equipment.

Background

With the continuous development of mobile internet and internet of things, the 5G technology puts higher demands on its development according to the increasing demands, and in terms of service scheduling flexibility, scheduling delay, average throughput of users and the like, the demands on communication technology indexes are more severe, and especially, research on scheduling delay, which is one of important indexes affecting the performance of the 5G network, is receiving more and more attention.

Currently, 3GPP (3 rd Generation Partnership Project, third Generation partnership project) is developing standardization work for 5G technology-related for URLLC (Ultra-reliable and Low Latency Communications, low latency high reliability application scenario). Among them, a short TTI (Transmission Time Interval ) structure is being studied for a subframe structure, and 3GPP has clarified that the short TTI structure is designed in such a way as to reduce the number of symbols in a subframe. The short TTI structure that has been clarified includes a 2 symbol short TTI structure and a 7 symbol short TTI structure.

For the uplink, the resource mapping scheme of UCI (Uplink Control Information ) defined for a structure containing 14 symbols in a subframe in the existing LTE standard protocol is not applicable for a short TTI structure containing 2 symbols or 7 symbols.

Disclosure of Invention

Aiming at the defects in the prior art, the embodiment of the invention provides a resource mapping method of uplink control information and user equipment, which can be suitable for a short TTI structure containing 2 symbols or 7 symbols, and is convenient for reducing uplink transmission delay.

In one aspect, an embodiment of the present invention provides a method for mapping resources of uplink control information, including:

determining a target subframe for mapping uplink control information UCI in channel resources of a PUSCH;

acquiring resource mapping configuration information corresponding to a frame structure of the target subframe, and determining a target symbol for bearing UCI in the target subframe;

performing UCI resource mapping in a target symbol in the target subframe according to the resource mapping configuration information;

the frame structure of the target subframe specifically includes: a subframe structure containing 2 symbols or a subframe structure containing 7 symbols.

In another aspect, an embodiment of the present invention provides a user equipment, including:

a target subframe determining unit, configured to determine a target subframe for mapping UCI in a channel resource of a PUSCH;

a configuration target determining unit, configured to obtain resource mapping configuration information corresponding to a frame structure of the target subframe, and determine a target symbol for carrying UCI in the target subframe;

A resource mapping unit, configured to perform resource mapping of UCI in a target symbol in the target subframe according to the resource mapping configuration information;

In yet another aspect, an embodiment of the present invention provides an electronic device, including a processor, a memory, and a bus, wherein:

the processor and the memory complete communication with each other through a bus;

the processor may call a computer program in memory to perform the steps of the above method.

In yet another aspect, an embodiment of the present invention provides a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of the above method.

The resource mapping method and the user equipment of the uplink control information provided by the embodiment of the invention are characterized in that the target sub-frame for mapping UCI in the channel resource of the PUSCH is determined; acquiring resource mapping configuration information corresponding to a frame structure of the target subframe; the frame structure of the target subframe specifically comprises: a subframe structure containing 2 symbols or a subframe structure containing 7 symbols; determining a target symbol for bearing UCI in the target subframe; and according to the resource mapping configuration information, performing UCI resource mapping in a target symbol in the target subframe, wherein the UCI resource mapping is applicable to UCI resource mapping of a short TTI structure containing 2 symbols or 7 symbols, and is convenient for reducing transmission delay.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 illustrates an exemplary flowchart of a resource mapping method of uplink control information according to an embodiment of the present invention;

fig. 2 illustrates a diagram of UCI resource mapping configuration in the case of including 1 data symbol in a 2-symbol frame structure according to one embodiment of the present invention;

fig. 3 illustrates a diagram of UCI resource mapping configuration in the case where 2 data symbols are included in a 2-symbol frame structure according to one embodiment of the present invention;

fig. 4 illustrates a diagram of UCI resource mapping configuration in the case of a 7-symbol frame structure according to one embodiment of the present invention;

fig. 5 shows a schematic structural diagram of a user equipment according to an embodiment of the present invention;

fig. 6 shows a physical structure diagram of an electronic device according to an embodiment of the invention.

Detailed Description

The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the invention, are within the scope of the invention.

As used herein, the terms "module," "apparatus," and the like are intended to include a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a module may be, but is not limited to: a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of example, both an application running on a computing device and the computing device can be a module. One or more modules may be located in one process and/or thread of execution, and one module may be located on one computer and/or distributed between two or more computers.

The technical scheme of the invention is described in detail below with reference to the accompanying drawings.

Referring to fig. 1, an exemplary flowchart of a resource mapping method of uplink control information according to one embodiment of the present invention is shown.

As shown in fig. 1, the resource mapping method of uplink control information provided by the embodiment of the present invention may include the following steps:

s110: and determining a target subframe for mapping UCI in the channel resource of the PUSCH.

The resource mapping method of the uplink control information provided by the embodiment of the invention is suitable for a communication system which takes a subframe containing 2 symbols or a subframe containing 7 symbols as a unit of scheduling data and transmission (namely scheduling granularity), namely a short TTI structure containing 2 symbols or 7 symbols is adopted as a scheduling basic unit TTI in the communication system; for a short TTI structure containing 2 symbols, the minimum scheduled time-frequency resource is a subframe containing 2 symbols; for a short TTI structure containing 7 symbols, the smallest scheduled time-frequency resource is a subframe containing 7 symbols.

The communication system is specifically a TDD (Time Division Duplexing, time division duplex) system or an FDD (Frequency Division Dual, frequency division duplex) system.

The user equipment in the communication system may carry UCI on a PUSCH (Physical Uplink Shared Channel ) channel, where the UCI mainly includes CQI (Channel Quality Indicator, channel quality Indication)/PMI (Precoding Matrix Indicator, precoding matrix Indication), RI (Rank Indication) and HARQ-ACK (Hybrid Automatic Repeat request Acknowledgement ).

UCI is transmitted to the base station through one or more subframes with the length of 2 symbols or 7 symbols in the channel resource of the PUSCH. Therefore, in order to implement uplink transmission of UCI, a target subframe for mapping UCI in channel resources of PUSCH may be first determined so that resource mapping of UCI is completed in the target subframe later.

S120: and acquiring resource mapping configuration information corresponding to the frame structure of the target subframe, and determining a target symbol for bearing UCI in the target subframe.

Specifically, after determining the target subframe for mapping UCI through step S110, a frame structure of the target subframe may be determined, and resource mapping configuration information corresponding to the frame structure may be acquired according to the frame structure of the target subframe.

The frame structure of the target subframe specifically comprises: a subframe structure containing 2 symbols or a subframe structure containing 7 symbols.

In the embodiment of the invention, different UCI resource mapping schemes are configured in advance for different frame structures, and are stored in the form of resource mapping configuration information.

Considering that there are different configuration requirements for HARQ-ACK, RI and CQI/PMI in UCI, the resource mapping configuration information corresponding to the frame structure of different subframes may include: position indication information of a target mapping resource corresponding to HARQ-ACK, position indication information of a target mapping resource corresponding to RI and position indication information of a target mapping resource corresponding to CQI/PMI.

In practical application, the PUSCH channel is the most important channel in the uplink of the physical layer, and the information amount carried by the PUSCH channel is the largest in the uplink channel; in addition to the UCI, the PUSCH channel also carries uplink data information and uplink reference signals. The uplink reference signal associated with PUSCH transmission is DMRS (Demodulation Reference Signal ).

In the embodiment of the invention, the target subframe used for mapping UCI is also used for mapping DMRS and uplink data information. Therefore, in order to implement resource mapping of UCI, a target symbol for carrying UCI needs to be determined from the target subframe.

Consider that DMRS needs to occupy 1 symbol, while UCI may be mapped within the same symbol as uplink data information. Therefore, in the embodiment of the present invention, the symbol mapped with the DMRS may be first found out, and the symbol mapped with the DMRS may be used as a reference symbol; then, a target symbol for carrying UCI in the target subframe is determined according to the reference symbol. For example, in a target subframe including 2 symbols, if one symbol is mapped with a DMRS, another symbol may be determined as a target symbol for carrying UCI in the target subframe.

In the embodiment of the present invention, the acquisition of the resource mapping configuration information corresponding to the frame structure of the target subframe may be performed before determining the target symbol for carrying UCI in the target subframe; alternatively, the acquisition of the resource mapping configuration information corresponding to the frame structure of the target subframe may be performed after determining the target symbol for carrying UCI in the target subframe; or, the acquisition of the resource mapping configuration information corresponding to the frame structure of the target subframe and the determination of the target symbol for carrying UCI in the target subframe are simultaneously performed.

S130: and according to the resource mapping configuration information, performing resource mapping of UCI in a target symbol in the target subframe.

Specifically, the resource for mapping the HARQ-ACK in the target symbol in the target subframe may be determined according to the location indication information of the target mapping resource corresponding to the HARQ-ACK in the resource mapping configuration information, and then the resource for mapping the HARQ-ACK is performed on the resource for mapping the HARQ-ACK in the target symbol in the target subframe.

And determining resources for mapping the RI in the target symbol in the target subframe according to the position indication information of the target mapping resources corresponding to the RI in the resource mapping configuration information, and then carrying out resource mapping of the RI on the resources for mapping the RI in the target symbol in the target subframe.

And determining the resources for mapping the CQI/PMI in the target symbol in the target subframe according to the position indication information of the target mapping resources corresponding to the CQI/PMI in the resource mapping configuration information, and then carrying out resource mapping of the CQI/PMI on the resources for mapping the CQI/PMI in the target symbol in the target subframe.

The resource mapping method of the uplink control information provided by the embodiment of the invention is characterized by determining a target subframe for mapping UCI in channel resources of a PUSCH; acquiring resource mapping configuration information corresponding to a frame structure of the target subframe; the frame structure of the target subframe specifically comprises: a subframe structure containing 2 symbols or a subframe structure containing 7 symbols; determining a target symbol for bearing UCI in the target subframe; and according to the resource mapping configuration information, performing UCI resource mapping in a target symbol in the target subframe, wherein the UCI resource mapping is applicable to UCI resource mapping of a short TTI structure containing 2 symbols or 7 symbols, and is convenient for reducing transmission delay.

Further, on the basis of the foregoing embodiment, after performing, according to the resource mapping configuration information, resource mapping of UCI in a target symbol in the target subframe, the method further includes:

and performing resource mapping of uplink data information on resources except for the resources mapped with the UCI in the target symbol.

On the basis of the foregoing embodiment, in the resource mapping method of uplink control information provided in another embodiment of the present invention, when the frame structure of the target subframe is specifically a subframe frame structure including 2 symbols, the determining a target symbol for carrying UCI in the target subframe includes:

taking a symbol mapped with a demodulation reference signal (DMRS) in the target subframe as a reference symbol; and determining the symbols except the reference symbols in the target subframe as target symbols.

Correspondingly, the location indication information of the target mapping resource corresponding to the HARQ-ACK is specifically: and sequentially selecting S1 resource elements from the resource element with the largest frequency in the target symbol as mapping resources corresponding to the HARQ-ACK according to the sequence from the big frequency to the small frequency.

The location indication information of the target mapping resource corresponding to the RI specifically includes: and sequentially selecting S2 resource elements from the resource element with the minimum frequency in the target symbol as mapping resources corresponding to the RI according to the sequence from the small frequency to the large frequency.

The location indication information of the target mapping resource corresponding to the CQI/PMI specifically comprises the following steps: and sequentially selecting S3 resource elements from the next resource element of the resource element with the largest frequency in the target mapping resource corresponding to the RI as the mapping resource corresponding to the CQI/PMI according to the sequence from the small frequency to the large frequency.

Wherein, the S1 is the maximum value of the total amount of resource elements required by mapping the HARQ-ACK; the S2 is the maximum value of the total amount of resource elements required for mapping the RI; and S3 is the maximum value of the total amount of the resource elements required for mapping the CQI/PMI.

In the embodiment of the present invention, the symbol for mapping the DMRS may be referred to as a DMRS symbol, and other symbols may be referred to as data symbols.

For a target subframe containing 2 symbols, if the target subframe comprises 1 DMRS symbol, 1 data symbol; the DMRS symbol may be determined as a reference symbol and the unique 1 data symbol as a target symbol.

Since the DMRS occupies 1 symbol in the target subframe containing 2 symbols, HARQ-ACK, RI, CQI/PMI in UCI needs to be mapped onto the same data symbol.

To ensure system reliability, referring to fig. 2, there is shown a diagram of UCI resource mapping configuration in the case of including 1 data symbol in a 2-symbol frame structure according to one embodiment of the present invention. As shown in fig. 2, the HARQ-ACK configuration maps to the bottom of the data symbol closest to the DMRS symbol. The RI and CQI/PMI map to the top of the same data symbol.

Wherein the frequency of the bottom of the data symbols is higher than the frequency of the top of the data symbols.

Correspondingly, the specific steps of resource mapping of UCI in a target symbol in a target subframe are as follows:

first, starting from the bottom of the data symbol, corresponding resource elements are sequentially punctured in the order from the bottom to the top in the frequency domain direction, and corresponding HARQ-ACKs are mapped thereon.

Secondly, on the same data symbol, starting from the top of the symbol, and starting from the resource element in the topmost frequency domain in the data symbol according to the sequence of the first time domain and the second frequency domain, mapping RI into the corresponding resource element; if the mapping of the resource elements in the row is completed, switching to the next row in the frequency domain, and continuing to map RI into the corresponding resource elements; and so on until RI mapping is complete. Finally, starting from the last position of RI mapping, continuing mapping CQI/PMI, wherein the mapping sequence and method are the same as the RI mapping method.

Other steps of the embodiment of the present invention are similar to those of the previous embodiment, and are not repeated.

The resource mapping method of uplink control information provided by the embodiment of the invention takes a symbol mapped with a DMRS in a target subframe as a reference symbol aiming at the situation that 1 data symbol is included in a subframe frame structure containing 2 symbols; determining symbols except the reference symbols in a target subframe as target symbols; and according to the position indication information of the target mapping resource corresponding to each HARQ-ACK, RI, CQI/PMI in the resource mapping configuration information, the resource mapping in the target symbol in the target subframe is completed, so that the uplink transmission delay is reduced conveniently.

On the basis of the foregoing embodiment, in the resource mapping method of uplink control information provided in another embodiment of the present invention, the performing, according to the resource mapping configuration information, resource mapping of UCI in a target symbol in the target subframe includes:

and according to a preset mapping priority order, performing UCI resource mapping in a target symbol in the target subframe according to the resource mapping configuration information.

Specifically, in order to ensure that a base station can acquire complete HARQ-ACK in time after acquiring the DMRS, in the embodiment of the invention, each piece of control information in UCI is aimed at; the HARQ-ACK, RI and CQI/PMI set the corresponding priorities. Wherein, the priority of HARQ-ACK is higher than the priority of RI; the priority of RI is higher than the priority of CQI/PMI.

Therefore, when resource mapping of UCI is performed, HARQ-ACK is mapped first, RI is mapped later, and CQI/PMI is mapped again. The purpose of this is to: if the number of HARQ-ACKs is large, the priority principle of 'HARQ-ACKRI > CQI/PMI > data' that is not punched is followed.

The resource mapping method of the uplink control information provided by the embodiment of the invention can ensure the timely and complete acquisition of the HARQ-ACK by the base station by setting the mapping priority of each control information in the UCI, thereby being convenient for improving the reliability of the system.

On the basis of the foregoing embodiment, in the resource mapping method of uplink control information provided in another embodiment of the present invention, when the frame structure of the target subframe is a subframe frame structure including 2 symbols, the determining a target symbol for carrying UCI in the target subframe includes:

if the target subframe does not have the symbol for mapping the DMRS information, taking the symbol mapped with the DMRS information in the previous subframe of the target subframe as a reference symbol; determining that two symbols in the target subframe are target symbols; the symbol adjacent to the reference symbol in the target subframe is determined to be a first target symbol, and the symbols except the first target symbol in the target subframe are determined to be second target symbols; the ordering in the time domain satisfies: the first target symbol precedes the second target symbol.

Correspondingly, the location indication information of the target mapping resource corresponding to the HARQ-ACK is specifically: and sequentially selecting S1 resource elements from the resource element with the largest frequency in the first target symbol as mapping resources corresponding to the HARQ-ACK according to the sequence from the big frequency to the small frequency.

The location indication information of the target mapping resource corresponding to the RI specifically includes: starting from the resource element with the minimum frequency and in the first target symbol, sequentially selecting resource elements on different frequencies in the target subframe according to the sequence from the small frequency to the large frequency; for each selected frequency, sequentially selecting resource elements in a first target symbol and resource elements in a second target symbol on the frequency according to the sequence in the time domain; and until S2 resource elements are selected, taking the selected S2 resource elements as mapping resources corresponding to the RI.

The location indication information of the target mapping resource corresponding to the CQI/PMI specifically comprises the following steps:

starting from a resource element in a first target symbol on the next frequency of the maximum frequency in the target mapping resource corresponding to the RI, sequentially selecting resource elements on different frequencies in the target subframe according to the sequence from the frequency to the high; for each selected frequency, sequentially selecting resource elements in a first target symbol and resource elements in a second target symbol on the frequency according to the sequence in the time domain; and until S3 resource elements are selected, taking the selected S3 resource elements as mapping resources corresponding to the CQI/PMI.

Since DMRS occupying 1 symbol can be shared by other subframes in a system having a subframe containing 2 symbols as a scheduling granularity; therefore, in the channel resource of the PUSCH, there are subframes including the DMRS symbol and subframes not including the DMRS symbol.

For a target subframe containing 2 symbols, if the target subframe does not include DMRS symbols, the target subframe includes 2 data symbols: the 1 st data symbol and the 2 nd data symbol may be the reference symbols of the symbol mapped with DMRS information in the previous subframe of the target subframe, and the 2 data symbols in the target subframe are all determined as target symbols. Wherein the 1 st data symbol precedes the 2 nd data symbol in the time domain.

Thus, the HARQ-ACK, RI, CQI/PMI in UCI can be mapped onto these 2 data symbols.

To ensure system reliability, referring to fig. 3, there is shown a diagram of UCI resource mapping configuration in the case where 2 data symbols are included in a 2-symbol frame structure according to one embodiment of the present invention. As shown in fig. 3, the HARQ-ACK configuration maps to the bottom of the data symbol closest to the DMRS symbol. RI and CQI/PMI information is mapped to the top of 2 data symbols.

In the embodiment of the invention, the frequency of the bottom of the data symbol is higher than the frequency of the top of the data symbol in the frequency domain.

first, starting from the bottom of the data symbol closest to the DMRS symbol, corresponding resource elements are sequentially punctured in the order from the bottom up in the frequency domain direction, and corresponding HARQ-ACKs are mapped thereon.

Secondly, on 2 data symbols, starting from the resource element with the minimum frequency and in the 1 st data symbol, sequentially selecting resource elements on different frequencies in a target subframe according to the sequence from the small frequency to the large frequency; and for each selected frequency, mapping the resource elements in the 1 st data symbol and the resource elements in the 2 nd data symbol on the frequency in sequence according to the sequence in the time domain until RI mapping is completed. Wherein the 1 st data symbol precedes the 2 nd data symbol in the time domain.

Finally, starting from the resource element in the first target symbol on the next frequency of the maximum frequency in the target mapping resource corresponding to RI, continuing to map CQI/PMI on 2 data symbols, wherein the mapping sequence and method are the same as the RI mapping method.

The resource mapping method of the uplink control information provided by the embodiment of the invention takes a symbol mapped with DMRS information in the previous subframe of a target subframe as a reference symbol aiming at the condition that 2 data symbols are included in a subframe structure containing 2 symbols; determining that two symbols in a target subframe are target symbols; and according to the position indication information of the target mapping resource corresponding to each HARQ-ACK, RI, CQI/PMI in the resource mapping configuration information, the resource mapping in the target symbol in the target subframe is completed, so that the uplink transmission delay is reduced conveniently.

On the basis of the foregoing embodiment, in the resource mapping method of uplink control information provided in another embodiment of the present invention, when the frame structure of the target subframe is specifically a subframe frame structure including 7 symbols, the determining a target symbol for carrying UCI in the target subframe includes:

taking the symbol mapped with the DMRS in the target subframe as a reference symbol; determining 6 symbols except the reference symbol in the target subframe as target symbols;

correspondingly, the location indication information of the target mapping resource corresponding to the HARQ-ACK is specifically:

selecting a symbol adjacent to the reference symbol from the target symbols as an HARQ-ACK symbol; sequentially selecting resource elements on different frequencies in the target subframe from the resource element with the largest frequency in the HARQ-ACK symbol according to the sequence from the big frequency to the small frequency; for each selected frequency, sequentially selecting resource elements in the HARQ-ACK symbols on the frequency according to the sequence in the time domain; until S1 resource elements are selected, taking the selected S1 resource elements as mapping resources corresponding to the HARQ-ACK;

the location indication information of the target mapping resource corresponding to the RI specifically includes:

Selecting a symbol adjacent to the HARQ-ACK symbol from the target symbol as an RI symbol; sequentially selecting resource elements on different frequencies in the target subframe from the resource element with the largest frequency in the RI symbol according to the sequence from the big frequency to the small frequency; for each selected frequency, sequentially selecting resource elements in the RI symbol of the frequency according to the sequence in the time domain; until S2 resource elements are selected, taking the selected S2 resource elements as mapping resources corresponding to the RI;

starting from the resource elements with the minimum frequency in the target subframe and in the target symbol, sequentially selecting the resource elements with different frequencies in the target subframe according to the sequence from the small frequency to the large frequency; sequentially selecting resource elements in the target symbol on each selected frequency according to the sequence in the time domain; until S3 resource elements are selected, taking the selected S3 resource elements as mapping resources corresponding to the CQI/PMI;

In practical applications, for a subframe structure containing 7 symbols, the DMRS is typically configured on the 4 th symbol of the 7 symbols.

Thus, the 4 th symbol in the target subframe may be used as a reference symbol; determining the 1 st symbol, the 2 nd symbol, the 3 rd symbol, the 5 th symbol, the 6 th symbol and the 7 th symbol except the reference symbol in the target subframe as target symbols; wherein the ordering in the time domain satisfies: the 1 st symbol precedes the 2 nd symbol, the 2 nd symbol precedes the 3 rd symbol, the 3 rd symbol precedes the 4 th symbol, the 4 th symbol precedes the 5 th symbol, the 5 th symbol precedes the 6 th symbol, and the 6 th symbol precedes the 7 th symbol.

The location indication information of the target mapping resource corresponding to the HARQ-ACK specifically comprises the following steps: starting from the resource element with the largest frequency and being in the 3 rd symbol, sequentially starting from the resource elements on different frequencies in the target subframe according to the sequence from the largest frequency to the smallest frequency; for each selected frequency, sequentially selecting the resource elements in the 3 rd symbol and the resource elements in the 5 th symbol of the frequency according to the sequence in the time domain; and until S1 resource elements are selected, taking the selected S1 resource elements as mapping resources corresponding to the HARQ-ACK.

The location indication information of the target mapping resource corresponding to the RI specifically includes: sequentially selecting resource elements on different frequencies in the target subframe according to the sequence from the largest frequency to the smallest frequency from the resource elements in the 2 nd symbol; for each selected frequency, sequentially selecting the resource elements in the 2 nd symbol and the resource elements in the 6 th symbol of the frequency according to the sequence in the time domain; and until S2 resource elements are selected, taking the selected S2 resource elements as mapping resources corresponding to the RI.

starting from the resource element with the minimum frequency and in the 1 st symbol, sequentially selecting resource elements on different frequencies in the target subframe according to the sequence from the small frequency to the large frequency; for each selected frequency, sequentially selecting the resource elements in the 1 st symbol, the resource elements in the 2 nd symbol, the resource elements in the 3 rd symbol, the resource elements in the 5 th symbol, the resource elements in the 6 th symbol and the resource elements in the 7 th symbol of the frequency according to the sequence in the time domain; and until S3 resource elements are selected, taking the selected S3 resource elements as mapping resources corresponding to the CQI/PMI.

To ensure system reliability, reference is made to fig. 4, which illustrates a diagram of UCI resource mapping configuration in the case of a 7-symbol frame structure according to one embodiment of the present invention. As shown in fig. 4, the HARQ-ACK maps to the bottom of the two data symbols closest to the left and right of the DMRS symbol, the RI configuration maps to the bottom of the 2 data symbols to the left and right of the data symbol carrying the HARQ-ACK, and the CQI/PMI configuration maps to the top of the 6 data symbols other than the DMRS symbol. Wherein, in the frequency domain, the frequency of the bottom of the data symbol is higher than the frequency of the top of the data symbol; in the time domain, the data symbols on the left precede the data symbols on the right.

firstly, starting from the bottom of 2 data symbols closest to two sides of a DMRS symbol, sequentially punching corresponding resource elements according to the sequence from the bottom to the top in the frequency domain direction, and mapping HARQ-ACK (hybrid automatic repeat request-acknowledgement) on the resource elements; for each frequency domain row, the data symbols on the left side are required to be punched and mapped on the time domain, then the data symbols on the right side are required to be punched and mapped, and then the previous row of frequency domain is required to be transferred; and so on until the HARQ-ACK mapping is completed.

Secondly, on the left data symbol and the right data symbol of the 2 data symbols mapped with HARQ-ACK, RI is mapped at the corresponding resource element position in sequence from bottom to top according to the frequency domain direction; for each frequency domain row, the data symbol on the left side needs to be mapped on the time domain, then the data symbol on the right side needs to be mapped, and then the previous row of frequency domain is transferred; and so on until RI mapping is complete.

Finally, on 6 data symbols except the DMRS symbol, mapping CQI/PMI into corresponding resource elements from 1 st resource element of the top frequency domain of the 1 st symbol in sequence from left to right according to the sequence of time domain before frequency domain; after the mapping of the 1 st symbol in the row is completed, mapping on the 2 nd symbol is continued, and so on until the last symbol of the row; if the mapping of the resource elements of all the symbols in the row is completed, turning to the next row of the frequency domain, and then continuing to map CQI/PMI into the corresponding resource elements of all the symbols from the time domain to the left; and so on until CQI/PMI mapping is complete.

Further, for a subframe structure including 7 symbols, if the DMRS is configured on a symbol other than the 4 th symbol in the 7 symbols, a symbol used for mapping the DMRS in the target subframe may be used as a reference symbol, and 6 symbols other than the reference symbol in the target subframe may be used as target symbols.

In order to ensure that a base station timely acquires the HARQ-ACK after acquiring the DMRS, one or two symbols adjacent to a reference symbol in a target subframe are determined to be target symbols for bearing the HARQ-ACK; starting from the resource element with the largest frequency in the target symbol for carrying HARQ-ACK in order of time-domain-first-frequency-domain in the target symbol for carrying HARQ-ACK,

The resource mapping method of the uplink control information provided by the embodiment of the invention takes a symbol mapped with DMRS information in the previous subframe of a target subframe as a reference symbol by aiming at a subframe frame structure containing 7 symbols; determining that two symbols in a target subframe are target symbols; and according to the position indication information of the target mapping resource corresponding to each HARQ-ACK, RI, CQI/PMI in the resource mapping configuration information, the resource mapping in the target symbol in the target subframe is completed, so that the uplink transmission delay is reduced conveniently.

On the basis of the above embodiments, a further embodiment of the present invention provides a user equipment.

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

As shown in fig. 5, a user equipment 500 provided in an embodiment of the present invention may include: a target subframe determination unit 501, a resource configuration determination unit 502, a target symbol determination unit 503, and a resource mapping unit 504.

The target subframe determining unit 501 is configured to determine a target subframe for mapping uplink control information UCI in a channel resource of a PUSCH.

The resource configuration determining unit 502 is configured to obtain resource mapping configuration information corresponding to a frame structure of the target subframe.

The target symbol determining unit 503 is configured to determine a target symbol for carrying UCI in the target subframe.

The resource mapping unit 504 is configured to perform resource mapping of UCI in a target symbol in the target subframe according to the resource mapping configuration information.

Optionally, the UCI includes: channel quality indicator CQI/precoding matrix indicator PMI, rank indicator RI and hybrid automatic repeat request acknowledgement HARQ-ACK; in response to this, the control unit,

the resource mapping configuration information includes:

position indication information of a target mapping resource corresponding to HARQ-ACK, position indication information of a target mapping resource corresponding to RI and position indication information of a target mapping resource corresponding to CQI/PMI.

Alternatively, when the frame structure of the target subframe is specifically a subframe frame structure including 2 symbols, the target symbol determining unit 503 is configured to use the symbol mapped with the demodulation reference signal DMRS in the target subframe as a reference symbol; and determining the symbols except the reference symbols in the target subframe as target symbols.

Optionally, the resource mapping unit 504 performs resource mapping of UCI in the target symbol in the target subframe according to the resource mapping configuration information according to a preset mapping priority order.

Wherein the priority of the HARQ-ACK is higher than the priority of the RI; the priority of the RI is higher than the priority of the CQI/PMI.

Optionally, when the frame structure of the target subframe is a subframe frame structure including 2 symbols, the target symbol determining unit 503 is configured to take, as a reference symbol, a symbol in a previous subframe of the target subframe, in which DMRS information is mapped, if there is no symbol in the target subframe, in which DMRS information is mapped; determining that two symbols in the target subframe are target symbols; the symbol adjacent to the reference symbol in the target subframe is determined to be a first target symbol, and the symbols except the first target symbol in the target subframe are determined to be second target symbols; the ordering in the time domain satisfies: the first target symbol precedes the second target symbol.

Optionally, when the frame structure of the target subframe is specifically a subframe frame structure including 7 symbols, the target symbol determining unit 503 is configured to use, if the 4 th symbol in the target subframe is used for mapping DMRS, the 4 th symbol in the target subframe as a reference symbol; determining the 1 st symbol, the 2 nd symbol, the 3 rd symbol, the 5 th symbol, the 6 th symbol and the 7 th symbol except the reference symbol in the target subframe as target symbols; wherein the ordering in the time domain satisfies: the 1 st symbol precedes the 2 nd symbol, the 2 nd symbol precedes the 3 rd symbol, the 3 rd symbol precedes the 4 th symbol, the 4 th symbol precedes the 5 th symbol, the 5 th symbol precedes the 6 th symbol, and the 6 th symbol precedes the 7 th symbol.

Correspondingly, the location indication information of the target mapping resource corresponding to the HARQ-ACK is specifically: starting from the resource element with the largest frequency and being in the 3 rd symbol, sequentially starting from the resource elements on different frequencies in the target subframe according to the sequence from the largest frequency to the smallest frequency; for each selected frequency, sequentially selecting the resource elements in the 3 rd symbol and the resource elements in the 5 th symbol of the frequency according to the sequence in the time domain; and until S1 resource elements are selected, taking the selected S1 resource elements as mapping resources corresponding to the HARQ-ACK.

Optionally, after performing resource mapping of UCI in a target symbol in the target subframe according to the resource mapping configuration information, the resource mapping unit 504 is further configured to perform resource mapping of uplink data information on resources other than the resource mapping the UCI in the target symbol.

The user equipment provided by the embodiment of the invention determines the target subframe for mapping UCI in the channel resource of the PUSCH; acquiring resource mapping configuration information corresponding to a frame structure of the target subframe; the frame structure of the target subframe specifically comprises: a subframe structure containing 2 symbols or a subframe structure containing 7 symbols; determining a target symbol for bearing UCI in the target subframe; and according to the resource mapping configuration information, performing UCI resource mapping in a target symbol in the target subframe, wherein the UCI resource mapping is applicable to UCI resource mapping of a short TTI structure containing 2 symbols or 7 symbols, and is convenient for reducing transmission delay.

The embodiment of the user equipment provided by the present invention may be specifically used to execute the processing flow of each method embodiment, and the functions thereof are not described herein again, and reference may be made to the detailed description of the method embodiments.

Referring to fig. 6, a schematic diagram of the physical structure of an electronic device according to one embodiment of the invention is shown. As shown in fig. 6, the electronic device 600 may include: a processor (processor) 601, a memory (memory) 602, and a bus 603, wherein the processor 601, the memory 602, and the bus 603 complete communication with each other. The processor 601 may call a computer program in the memory 602 to perform the methods provided by the method embodiments described above, for example comprising:

determining a target subframe for mapping uplink control information UCI in channel resources of a PUSCH; acquiring resource mapping configuration information corresponding to a frame structure of the target subframe; determining a target symbol for bearing UCI in the target subframe; performing UCI resource mapping in a target symbol in the target subframe according to the resource mapping configuration information; the frame structure of the target subframe specifically includes: a subframe structure containing 2 symbols or a subframe structure containing 7 symbols.

In another embodiment, the UCI includes: channel quality indicator CQI/precoding matrix indicator PMI, rank indicator RI and hybrid automatic repeat request acknowledgement HARQ-ACK; in response to this, the control unit,

the resource mapping configuration information includes:

In another embodiment, the processor 601, when executing the computer program, implements the following method:

when the frame structure of the target subframe is specifically a subframe frame structure including 2 symbols, the determining the target symbol for carrying UCI in the target subframe includes:

taking a symbol mapped with a demodulation reference signal (DMRS) in the target subframe as a reference symbol; determining symbols except the reference symbols in the target subframe as target symbols;

correspondingly, the location indication information of the target mapping resource corresponding to the HARQ-ACK is specifically: sequentially selecting S1 resource elements from the resource element with the largest frequency in the target symbol as mapping resources corresponding to HARQ-ACK according to the sequence from the big frequency to the small frequency;

The location indication information of the target mapping resource corresponding to the RI specifically includes: sequentially selecting S2 resource elements from the resource element with the minimum frequency in the target symbol as mapping resources corresponding to the RI according to the sequence from the small frequency to the large frequency;

the location indication information of the target mapping resource corresponding to the CQI/PMI specifically comprises the following steps: sequentially selecting S3 resource elements as mapping resources corresponding to the CQI/PMI from the next resource element of the resource element with the largest frequency in the target mapping resources corresponding to the RI according to the sequence from the small frequency to the large frequency;

the performing, according to the resource mapping configuration information, resource mapping of UCI in a target symbol in the target subframe includes:

according to a preset mapping priority order, performing UCI resource mapping in a target symbol in the target subframe according to the resource mapping configuration information;

when the frame structure of the target subframe is a subframe frame structure including 2 symbols, the determining the target symbol for carrying UCI in the target subframe includes:

if the target subframe does not have the symbol for mapping the DMRS information, taking the symbol mapped with the DMRS information in the previous subframe of the target subframe as a reference symbol; determining that two symbols in the target subframe are target symbols; the symbol adjacent to the reference symbol in the target subframe is determined to be a first target symbol, and the symbols except the first target symbol in the target subframe are determined to be second target symbols; the ordering in the time domain satisfies: the first target symbol precedes the second target symbol;

correspondingly, the location indication information of the target mapping resource corresponding to the HARQ-ACK is specifically: sequentially selecting S1 resource elements from the resource element with the largest frequency in the first target symbol as mapping resources corresponding to the HARQ-ACK according to the sequence from the big frequency to the small frequency;

The location indication information of the target mapping resource corresponding to the RI specifically includes: starting from the resource element with the minimum frequency and in the first target symbol, sequentially selecting resource elements on different frequencies in the target subframe according to the sequence from the small frequency to the large frequency; for each selected frequency, sequentially selecting resource elements in a first target symbol and resource elements in a second target symbol on the frequency according to the sequence in the time domain; until S2 resource elements are selected, taking the selected S2 resource elements as mapping resources corresponding to the RI;

starting from a resource element in a first target symbol on the next frequency of the maximum frequency in the target mapping resource corresponding to the RI, sequentially selecting resource elements on different frequencies in the target subframe according to the sequence from the frequency to the high; for each selected frequency, sequentially selecting resource elements in a first target symbol and resource elements in a second target symbol on the frequency according to the sequence in the time domain; until S3 resource elements are selected, taking the selected S3 resource elements as mapping resources corresponding to the CQI/PMI;

when the frame structure of the target subframe is specifically a subframe frame structure including 7 symbols, the determining the target symbol for carrying UCI in the target subframe includes:

selecting a symbol adjacent to the reference symbol from the target symbols as an HARQ-ACK symbol; sequentially selecting resource elements on different frequencies in the target subframe from the resource element with the largest frequency in the HARQ-ACK symbol according to the sequence from the big frequency to the small frequency; for each selected frequency, sequentially selecting resource elements in the HARQ-ACK symbols on the frequency according to the sequence in the time domain; and until S1 resource elements are selected, taking the selected S1 resource elements as mapping resources corresponding to the HARQ-ACK.

selecting a symbol adjacent to the HARQ-ACK symbol from the target symbol as an RI symbol; sequentially selecting resource elements on different frequencies in the target subframe from the resource element with the largest frequency in the RI symbol according to the sequence from the big frequency to the small frequency; for each selected frequency, sequentially selecting resource elements in the RI symbol of the frequency according to the sequence in the time domain; and until S2 resource elements are selected, taking the selected S2 resource elements as mapping resources corresponding to the RI.

starting from the resource elements with the minimum frequency in the target subframe and in the target symbol, sequentially selecting the resource elements with different frequencies in the target subframe according to the sequence from the small frequency to the large frequency; sequentially selecting resource elements in the target symbol on each selected frequency according to the sequence in the time domain; and until S3 resource elements are selected, taking the selected S3 resource elements as mapping resources corresponding to the CQI/PMI.

after the resource mapping of UCI is performed in the target symbol in the target subframe according to the resource mapping configuration information, the method further includes:

The electronic equipment provided by the embodiment of the invention has at least the following technical effects: determining a target subframe for mapping UCI in channel resources of a PUSCH; acquiring resource mapping configuration information corresponding to a frame structure of the target subframe; the frame structure of the target subframe specifically comprises: a subframe structure containing 2 symbols or a subframe structure containing 7 symbols; determining a target symbol for bearing UCI in the target subframe; and according to the resource mapping configuration information, performing UCI resource mapping in a target symbol in the target subframe, wherein the UCI resource mapping is applicable to UCI resource mapping of a short TTI structure containing 2 symbols or 7 symbols, and is convenient for reducing transmission delay.

Embodiments of the present invention disclose a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the methods provided by the method embodiments described above, for example comprising:

Embodiments of the present invention provide a non-transitory computer-readable storage medium storing a computer program that causes the computer to execute the methods provided by the above-described method embodiments, for example, including:

Further, the logic instructions in the memory described above may be implemented in the form of software functional units and stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the method described in the respective embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The resource mapping method of the uplink control information is characterized by comprising the following steps:

determining a target subframe for mapping uplink control information UCI in channel resources of a physical uplink shared channel PUSCH;

the frame structure of the target subframe specifically includes: a subframe structure containing 2 symbols or a subframe structure containing 7 symbols;

the UCI includes: channel quality indicator CQI/precoding matrix indicator PMI, rank indicator RI and hybrid automatic repeat request acknowledgement HARQ-ACK; in response to this, the control unit,

the resource mapping configuration information includes:

position indication information of target mapping resources corresponding to HARQ-ACK, position indication information of target mapping resources corresponding to RI and position indication information of target mapping resources corresponding to CQI/PMI;

wherein, the S1 is the maximum value of the total amount of resource elements required by mapping the HARQ-ACK; the S2 is the maximum value of the total amount of resource elements required for mapping the RI; the S3 is the maximum value of the total amount of resource elements required for mapping the CQI/PMI;

2. The method of claim 1, wherein the performing resource mapping of UCI in a target symbol in the target subframe according to the resource mapping configuration information comprises:

3. The method of claim 1, wherein when the frame structure of the target subframe is a subframe frame structure including 2 symbols, the determining the target symbol for carrying UCI in the target subframe includes:

4. A method according to any one of claims 1-3, wherein, after performing resource mapping of UCI in a target symbol in the target subframe according to the resource mapping configuration information, the method further comprises:

5. A user device, comprising:

a target subframe determining unit, configured to determine a target subframe for mapping uplink control information UCI in a channel resource of a PUSCH;

the resource mapping configuration information includes:

when the frame structure of the target subframe is specifically a subframe frame structure including 2 symbols, the configuration target determining unit is specifically configured to:

when the frame structure of the target subframe is specifically a subframe frame structure including 7 symbols, the configuration target determining unit is specifically configured to:

6. An electronic device comprising a processor, a memory, and a bus, wherein:

the processor may call a computer program in a memory to perform the steps of the method according to any of claims 1-4.

7. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the steps of the method according to any of claims 1-4.