CN113612595A

CN113612595A - Uplink control information transmission method and device

Info

Publication number: CN113612595A
Application number: CN202111045681.XA
Authority: CN
Inventors: 冯伟; 江世宇; 严凡
Original assignee: CICT Mobile Communication Technology Co Ltd
Current assignee: CICT Mobile Communication Technology Co Ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2021-11-05
Anticipated expiration: 2041-09-07
Also published as: CN113612595B

Abstract

The invention provides an uplink control information transmission method and device, wherein the method comprises the following steps: configuring the mapping relation among the number of the modulation coding mode, the index of the deviant and the scaling ratio which are established in advance in the wireless resource control signaling; and sending the configured radio resource control signaling and the downlink control information to the terminal so that the terminal searches the index and the scaling of the offset value corresponding to the number of the modulation coding mode in the radio resource control signaling according to the number of the modulation coding mode in the downlink control information, and multiplexes the target uplink control information to a physical uplink shared channel for transmission according to the index and the scaling of the offset value. The invention reduces the load of the PDCCH, reduces the code rate, increases the number of redundant transmissions, improves the forward resolution ratio of the PDCCH and the system throughput of the base station, improves the accuracy of uplink control information transmission, reduces the time delay of uplink data transmission and improves the experience of users.

Description

Uplink control information transmission method and device

Technical Field

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

Background

URLLC (Ultra-Reliable-Low-Latency Communication) is one of three typical application scenarios of 5G NR (New Radio, New air interface), has characteristics of Low Latency and Ultra-high reliability, and is mainly applied to industrial automation, automatic driving, traffic safety and control, telemedicine, and the like. The ultra-high reliability is mainly implemented and enhanced for the reliability of Uplink data and Downlink data (including Control end data and user end data) transmission, and ensures the correctness and integrity of the data, and the adopted main technologies include low coding rate and redundant transmission, UCI (Uplink Control Information) enhancement, PDCCH (Physical Downlink Control Channel) enhancement and the like.

A UE (User Equipment, terminal) acquires BetaOffsets and Scaling of UCI according to an offset Indicator (Beta _ offset Indicator) field in RRC signaling configuration and Downlink Control Information (DCI), and then performs UCI multiplexing on a PUSCH channel according to the BetaOffsets and Scaling.

As shown in fig. 1, in a scenario that a Beta _ offset Indicator indication field exists in DCI0_1 and uplink control information is multiplexed in an uplink physical channel, and configured as Dynamic, a base station configures 4 BetaOffsets to a UE through RRC signaling. When UCI is multiplexed on PUSCH, the base station instructs the UE to select a specific BetaOffsets through a Beta _ offset Indicator indication field in DCI0_ 1. Therefore, DCI0_1 needs to add 2 bits to carry Beta _ offset Indicator indication information, which increases the load size of PDCCH, resulting in increasing code rate, reducing the number of redundant transmissions, reducing the positive rate of PDCCH, and further reducing the system throughput of the base station under the same CCE (Control Channel Element) resource; meanwhile, inappropriate BetaOffsets can reduce the correctness of the uplink control information transmission.

Disclosure of Invention

The invention provides an uplink control information transmission method and device, which are used for solving the defects that in the prior art, a base station indicates UE to select specific BetaOffsets through a Beta _ offset Indicator indication field in DCI0_1, so that the code rate is increased, the forward resolution ratio of a PDCCH (physical downlink control channel) and the system throughput of the base station are reduced, the accuracy of uplink control information transmission is reduced, and the forward resolution ratio of the PDCCH is enhanced and the accuracy of uplink control information transmission is improved.

The invention provides an uplink control information transmission method, which is applied to a base station and comprises the following steps:

configuring the mapping relation among the number of the modulation coding mode, the index of the deviant and the scaling ratio which are established in advance in the wireless resource control signaling;

sending the configured radio resource control signaling and downlink control information to a terminal so that the terminal searches an index and a scaling ratio of an offset value corresponding to the number of the modulation coding mode in the radio resource control signaling according to the number of the modulation coding mode in the downlink control information, and multiplexes target uplink control information to a physical uplink shared channel for transmission according to the index and the scaling ratio of the offset value;

wherein the downlink control information does not include an indication field of an index of the offset value.

According to the uplink control information transmission method provided by the present invention, before the mapping relationship between the number of the pre-established modulation coding scheme, the index of the offset value and the scaling is configured in the radio resource control signaling, the method further comprises:

determining the index of the offset value in the mapping relation according to the range of the index of the offset value; wherein the range of the index of the offset value is the same as the range of the number of the modulation coding scheme;

selecting a scaling in the mapping relationship from a plurality of pre-configured scaling.

According to the uplink control information transmission method provided by the invention, the radio resource control signaling is also configured with a preset identifier; the preset identifier is used for indicating the terminal to search an index and a scaling of an offset value corresponding to the number of the modulation coding mode in the radio resource control signaling;

correspondingly, the index and the scaling of the offset value are searched and obtained in the radio resource control signaling according to the number of the modulation coding mode in the downlink control information under the condition that the terminal obtains the preset identifier.

The invention also provides an uplink control information transmission method, which is applied to a terminal and comprises the following steps:

receiving a radio resource control signaling and downlink control information sent by a base station; the radio resource control signaling is configured with a mapping relation among a number of a modulation coding mode, an index of an offset value and a scaling ratio which are established in advance;

searching the index and the scaling ratio of an offset value corresponding to the number of the modulation coding mode in the radio resource control signaling according to the number of the modulation coding mode in the downlink control information, and multiplexing the target uplink control information on a physical uplink shared channel for transmission according to the index and the scaling ratio of the offset value;

According to the uplink control information transmission method provided by the present invention, multiplexing the target uplink control information on the physical uplink shared channel for transmission according to the index and the scaling of the offset value comprises:

calculating frequency domain resources used for transmitting the target uplink control information in the physical uplink shared channel according to the index and the scaling of the offset value;

and multiplexing the target uplink control information to a physical uplink shared channel for transmission according to the frequency domain resources.

The invention also provides an uplink control information transmission device, which is applied to a base station and comprises the following components:

a configuration module, configured to configure mapping relationships among numbers of pre-established modulation coding modes, indexes of offset values, and scaling ratios in radio resource control signaling;

a sending module, configured to send the configured radio resource control signaling and the downlink control information to a terminal, so that the terminal searches, according to the number of the modulation and coding scheme in the downlink control information, for an index and a scaling ratio of an offset value corresponding to the number of the modulation and coding scheme in the radio resource control signaling, and multiplexes, according to the index and the scaling ratio of the offset value, target uplink control information onto a physical uplink shared channel for transmission;

The invention also provides an uplink control information transmission device, which is applied to a terminal and comprises the following components:

a receiving module, configured to receive a radio resource control signaling and downlink control information sent by a base station; the radio resource control signaling is configured with a mapping relation among a number of a modulation coding mode, an index of an offset value and a scaling ratio which are established in advance;

a transmission module, configured to search, in the radio resource control signaling, an index and a scaling ratio of an offset value corresponding to a modulation coding mode number according to the modulation coding mode number in the downlink control information, and multiplex, according to the index and the scaling ratio of the offset value, target uplink control information onto a physical uplink shared channel for transmission;

The present invention also provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any of the above uplink control information transmission methods when executing the program.

The present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the uplink control information transmission method as described in any of the above.

The present invention also provides a computer program product comprising a computer program, which when executed by a processor implements the steps of any of the above uplink control information transmission methods.

The uplink control information transmission method and device provided by the invention directly configure the mapping relation among the number of the modulation coding mode, the index of the offset value and the scaling in the radio resource control signaling, and send the configured radio resource control signaling and downlink control information to the terminal so that the terminal can obtain the index and the scaling of the corresponding offset value according to the number of the modulation coding mode in the downlink control information directly, thereby not only reducing the resources of PDCCH (physical downlink control channel) occupied by setting a Beta _ offset Indicator indication field in DCI0_1, reducing the load size of PDCCH, reducing the code rate, increasing the number of redundant transmission, improving the correct rate of PDCCH, but also setting the appropriate transmission code rate of the uplink control information according to the uplink channel condition, further improving the system throughput of the base station and improving the accuracy of the uplink control information transmission, and then reduce the time delay of terminal service transmission, and can effectively promote user's experience and feel.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of DCI0_1 provided in the prior art;

fig. 2 is a flowchart illustrating an uplink control information transmission method according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of DCI0_1 in the uplink control information transmission method provided in the present invention;

fig. 4 is a schematic structural diagram of DCI0_0 in the uplink control information transmission method provided in the present invention;

fig. 5 is a second flowchart illustrating an uplink control information transmission method according to the present invention;

fig. 6 is a third flowchart illustrating an uplink control information transmission method according to the present invention;

fig. 7 is a schematic structural diagram of an apparatus for transmitting uplink control information according to the present invention;

fig. 8 is a second schematic structural diagram of an apparatus for transmitting uplink control information according to the present invention;

fig. 9 is a schematic structural diagram of an electronic device provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The following describes, with reference to fig. 2, an uplink control information transmission method of the present invention, which is applied to a base station, and includes: step 201, allocating mapping relation among number of modulation coding mode, index of deviant and scaling ratio in radio resource control signaling;

the execution subject in this embodiment is a base station.

The number of the modulation and coding scheme may be an index value or a modulation order of the modulation and coding scheme, and may be specifically set according to a requirement of network deployment, which is not specifically limited in this embodiment.

The number of each modulation coding mode corresponds to one modulation coding mode.

The index BetaOffsets _ index of the offset value is used to indicate which set of offset values the terminal uses, and each index of the offset value corresponds to one offset value. Since BetaOffsets is a floating-point number, if it is directly transmitted to the terminal, it occupies a large amount of wireless resources. Therefore, by setting an index for each BetaOffsets, only the index value needs to be transmitted between the base station and the terminal, and the terminal can be instructed to use the offset value of the group, thereby effectively saving wireless resources.

The offset value is used for determining the proportion of the target uplink control information occupying the resource space of the physical uplink shared channel, and the Scaling is used for limiting the maximum resource space which can be used for transmitting the target uplink control information in the physical uplink shared channel.

The mapping relation among the number of the modulation coding mode, the index of the deviant and the scaling is a plurality of groups, and the specific number can be set according to the actual requirement.

Optionally, the base station may add a new cell Map-Of-Mcs-And-Uci in the uplink physical shared channel configuration PUSCH-Config in the radio resource control signaling or in the semi-persistent scheduling configuration Configured Grant Config, which is not specifically limited in this embodiment.

Then, the base station arranges the mapping relationship among the number Of the modulation And coding scheme, the index Of the offset value, And the scaling in Map-Of-Mcs-And-Uci.

Since the radio resource control signaling is configured in the PDSCH, only a few resources in the PDSCH are occupied, and the impact on the load in the PDSCH is negligible. Compared with the prior art, the mapping relation is configured in the radio resource control signaling, so that the load of the PDCCH can be effectively reduced, and the forward resolution of the PDCCH is improved.

Step 202, sending the configured radio resource control signaling and downlink control information to a terminal, so that the terminal searches an index and a scaling ratio of an offset value corresponding to a modulation coding mode number in the radio resource control signaling according to the modulation coding mode number in the downlink control information, and multiplexes target uplink control information onto a physical uplink shared channel for transmission according to the index and the scaling ratio of the offset value; wherein the downlink control information does not include an indication field of an index of the offset value.

Generally, in the 5G NR system, UCI includes three types of uplink control Information, SR (Scheduling Request), HARQ-ACK (Hybrid Automatic Repeat Request acknowledgement), and CSI (Channel state Information). Wherein the HARQ-ACK, the aperiodic CSI, and the semi-persistent CSI can be multiplexed for transmission on the PUSCH. Wherein, the CSI comprises two parts: CSI part1 and CSI part 2.

In summary, the target downlink control information includes one or more of HARQ-ACK, aperiodic CSI, and semi-persistent CSI, which is not specifically limited in this embodiment.

As shown in fig. 3, if the format of the downlink control information is DCI0-1, the indication field of the index for indicating the offset value in DCI0-1 is deleted. The deleted downlink control information is only used to indicate which group of modulation and coding scheme the terminal selects, and does not indicate which group of offset index the terminal selects.

Optionally, the base station sends the configured radio resource control signaling to the terminal, so as to inform the terminal of a mapping relationship among a number of a modulation coding scheme, an index of an offset value, and a scaling ratio, which are pre-established in the radio resource control signaling.

As shown in fig. 3 and 4, the base station further transmits downlink control information to the terminal to notify the terminal of a Modulation and coding scheme number in an indication field (Modulation and coding scheme) indicating the Modulation and coding scheme in the downlink control information.

The terminal can search the index and the scaling of the offset value corresponding to the number of the modulation coding mode in the mapping relation according to the number of the modulation coding mode.

And then, the terminal acquires the resource space of the physical uplink shared channel, which is required to be occupied by the target uplink control information, according to the index and the scaling of the offset value, and multiplexes the target uplink control information onto the physical uplink shared channel according to the corresponding resource space for transmission so as to upload the target uplink control information to the base station.

The PDCCH resource occupied by the deleted DCI0-1 can be reduced by 2 bits; therefore, under the condition that CCE resources in the PDCCH are the same, the method in this embodiment may effectively reduce a code rate, increase the number of redundant transmissions, further effectively improve a forward decoding rate of the PDCCH, and improve throughput of the base station system, thereby effectively ensuring accuracy of uplink control information transmission, and avoiding a phenomenon of an increase in delay of uplink control information transmission due to repeated transmission of erroneous uplink control information.

In addition, in the prior art, the base station configures one or more sets of BetaOffsets and Scaling in the uplink physical shared channel configuration or semi-persistent scheduling configuration cell to the terminal through RRC signaling, and the terminal acquires the set of BetaOffsets and Scaling according to an offset indication field in RRC signaling configuration and downlink control information, and then performs UCI multiplexing on a PUSCH channel according to the BetaOffsets and Scaling. And the base station transmits the indication of the BetaOffsets index to the terminal through the DCI, indicates the terminal to select the corresponding BetaOffsets index and configures specific Scaling for the terminal. The existing BetaOffsets index is selected in a manner including,

in scenario 1, when a beta _ offset indicator field exists in DCI0_1 and uplink control information is multiplexed in an uplink physical shared channel (UCI-OnPUSCH) cell and configured to be dynamic, a base station indicates a terminal to select specific BetaOffsets through the beta _ offset indicator field in DCI0_ 1.

In scenario 2, when the uplink data scheduling authorization is issued by DCI0_0, and UCI is multiplexed into a cell of the PUSCH or UCI in a cell group is multiplexed into the PUSCH configuration to be dynamic, the terminal can only use the first group of BetaOffsets indexes in the dynamically configured RRC signaling.

In summary, in the prior art, in different scenarios, DCI with different formats needs to be adopted, and ways of indicating which set of offset value indexes is selected by the terminal are also different, and different protocol processing flows need to be formulated according to different scenarios, which results in a complex protocol structure inside the base station.

Compared with the prior art, in the present embodiment, in the scenario that UCI is multiplexed to PUSCH and configured dynamically, the Beta _ offset indicator field in DCI0_1 is deleted, and the PDCCH resource occupied by DCI0_1 is reduced. The UE is instructed to select proper BetaOffsets and Scaling by multiplexing Modulation and Coding Scheme (MCS) indication fields of the DCI0_0 or the DCI0_1, UCI and PUSCH data multiplexing is dynamically carried out, not only are the BetaOffsets and Scaling modes of UCI of different DCI format indication terminals unified, but also different indication modes do not need to be formulated according to different formats; and the indications in different formats are unified, and are all indication fields of modulation coding modes, so that when the BetaOffsets and Scaling of the UCI of the indication terminal are used, a unified collaborative processing flow can be adopted, the protocol processing flow is effectively simplified, and unified management is facilitated.

Alternatively, the existing BetaOffsets index selection method can only select one set of BetaOffsets or fixed BetaOffsets index from a few sets.

In addition, the existing base station only configures a fixed Scaling to the terminal when the UE accesses or performs uplink configuration authorization. When the terminal multiplexes the PUSCH, the upper limit of the number of the symbols used by the UCI can only be calculated according to the fixed Scaling, and the UE cannot adjust the upper limit of the symbols used by the UCI according to the service requirement.

And the quality of the uplink shared channel of the base station is dynamically changed. Therefore, the existing method for configuring Scaling and BetaOffsets for the terminal reduces the flexibility of configuration, and is difficult to adjust the Scaling and BetaOffsets configured for the terminal in real time according to the quality of the uplink shared channel of the base station, thereby further being difficult to ensure the accuracy of UCI transmission and reducing the system throughput of the base station.

In order to solve the above problems, in this embodiment, Scaling and BetaOffsets are flexibly configured according to the service requirement of the terminal, so as to improve the forward resolution of UCI or the uplink throughput of the base station, and improve the user experience.

Optionally, for different service requirements of the same terminal, the base station may indicate, through the MCS indication field of the DCI, that the terminal selects different BetaOffsets and Scaling values, so as to meet different service requirements and improve user experience.

TABLE 1 one of the mapping tables

Mcs	BetaOffsets_index	Scaling
				0	0	0.5
1	0	0.5
			2	1	0.5
…	…	…
			10	2	0.5
…	…	…
			17	3	0.5
…	…	…
			24	3	0.5
…	…	…
			28	0	0.5
29	1	0.5
			30	2	0.5
31	3	0.5

BetaOffsets and Scaling can be refined from terminal level to service bearer level, including two ways: the first way is to change only the index Of BetaOffsets, i.e. only Map-Of-Mcs-And-Uci needs to be configured to 31 mapping relationships when the terminal accesses; the second way is to configure Map-Of-Mcs-And-Uci at the same time Of configuring the terminal service bearer by using BetaOffsets And Scaling as the attributes Of the terminal service bearer. And the terminal selects corresponding BetaOffsets and scaling according to the transmitted service bearer to carry out UCI multiplexing. The present embodiment does not specifically limit the arrangement of BetaOffsets and Scaling.

Optionally, the service requirement of the UE is focused on the uplink data service, such as the UE is currently in an industrial internet scenario. Under the service requirement, to ensure the correctness of uplink data, it is necessary to minimize the influence of uplink control information on the uplink data code rate when uplink control information is multiplexed. That is, it is necessary to reduce occupation of RE (Resource Element) frequency domain resources of the PUSCH by UCI as much as possible.

Optionally, configuring a smaller BetaOffsets _ index and Scaling according to actual requirements may be as small as only ensuring the accuracy of the uplink control information feedback. Note that BetaOffsets are appropriately adjusted according to a change in channel quality of the current PDSCH, that is, according to an index value or a modulation order of the MCS. As shown in table 1, which is one of exemplary mapping tables, only BetaOffsets _ index is adjusted in the table.

In the service requirement of the UE, the service requirement is focused on the downlink data transmission delay service, and in order to ensure low delay of the downlink data, the uplink control information is required to be transmitted correctly as once as possible, that is, the number of REs used by the uplink control information is increased as much as possible when the uplink control information is multiplexed.

TABLE 2 second mapping relation Table

Mcs	BetaOffsets_index	Scaling
				0	0	1
1	1	1
			2	2	1
…	…	…
			28	0	1
29	1	1
			30	2	1
31	3	1

Optionally, a larger BetaOffsets index value and Scaling are configured, so that the correctness of UCI transmission is guaranteed to the maximum extent. It should be noted that, according to the change of the channel quality of the current PDSCH, that is, according to the index value or modulation order of the MCS, the BetaOffsets _ index is allowed to fluctuate within a certain range, so as to ensure the accuracy of UCI transmission to the maximum extent and improve the network performance as much as possible. As shown in table 2, it is an exemplary mapping table two. Only BetaOffsets _ index is adjusted in the table.

The service requirement of the UE is balanced with respect to the correctness of the UCI and PUSCH data, for example, in a public network environment, the BetaOffsets index value and Scaling may be configured according to actual requirements, so that the code rates of the UCI and PUSCH data are kept as consistent as possible, the positive resolution rates of the UCI and PUSCH data tend to be the same, and the overall performance of uplink and downlink of the network is ensured at the same time.

The embodiment directly configures the mapping relationship among the number of the pre-established modulation coding mode, the index of the deviant and the scaling in the radio resource control signaling, and sends the configured radio resource control signaling and the downlink control information to the terminal, the terminal can directly obtain the index and the scaling ratio of the corresponding offset value according to the number of the modulation coding mode in the downlink control information, thereby not only reducing the resources of a PDCCH (physical downlink control channel) occupied by setting a Beta _ offset Indicator indication field in DCI0_1, reducing the load size of the PDCCH, reducing the code rate, increasing the number of redundant transmission and improving the correct decoding rate of the PDCCH, but also setting the proper transmission code rate of the uplink control information according to the uplink channel condition, and then the system throughput of the base station and the correctness of uplink control information transmission are improved, the delay of terminal service transmission is reduced, and the experience of a user can be effectively improved.

On the basis of the foregoing embodiment, before the configuring the mapping relationship between the number of the pre-established modulation and coding scheme, the index of the offset value, and the scaling in the radio resource control signaling, the present embodiment further includes: determining the index of the offset value in the mapping relation according to the range of the index of the offset value; wherein the range of the index of the offset value is the same as the range of the number of the modulation coding scheme; selecting a scaling in the mapping relationship from a plurality of pre-configured scaling.

Alternatively, the range of the number of the modulation coding scheme is directly used as the range of the index of the offset value. Namely, the value range of MCS is 0-31, and the value range of BetaOffsets _ index is also 0-31. Compared with the existing 4 sets of BetaOffsets _ index, the BetaOffsets _ index in the embodiment is expanded from 4 to 31, so that the UE can use all the values in table 3, i.e., the range of the BetaOffsets _ index is consistent with the range of MCS (i.e., spectrum efficiency). Therefore, the BetaOffsets _ index of UCI can be adjusted more accurately and flexibly according to the frequency spectrum efficiency of the PUSCH, the code rate of UCI is further adjusted, the utilization rate of wireless resources is better improved, and the network efficiency is improved.

In addition, a plurality of scaling ratios can be configured in advance according to actual requirements, the scaling ratio of the UCI, namely the upper limit of the number of OFDM symbols occupied by the UCI, can be adjusted more accurately and flexibly according to the spectrum efficiency of the PUSCH, the code rate of the UCI can be further adjusted, the utilization rate of wireless resources is improved better, and the network efficiency is improved.

Wherein, the mapping relation comprises a plurality of groups of different offset values and scaling ratios. The structure Of the Map-Of-Mcs-And-Uci cell is shown in Table 3.

TABLE 3 Structure Table Of Map-Of-Mcs-And-Uci cells

In this embodiment, on one hand, the terminal can be directly indicated by the MCS field of the DCI which set of BetaOffsets and scaling is used to multiplex the UCI on the PUSCH channel, so that the Resource Element (RE) of the PDCCH occupied by the 2-bit beta _ offset indicator indication field can be effectively saved; on the other hand, BetaOffsets and scaling configured for the terminal can be adaptively adjusted according to the spectral efficiency of the PUSCH channel, so that the code rate of the UCI better conforms to the spectral efficiency of the PUSCH channel, and the forward solution rate of the UCI can be improved.

On the basis of the foregoing embodiments, in this embodiment, a preset identifier is further configured in the radio resource control signaling; the preset identifier is used for indicating the terminal to search an index and a scaling of an offset value corresponding to the number of the modulation coding mode in the radio resource control signaling; correspondingly, the index and the scaling of the offset value are searched and obtained in the radio resource control signaling according to the number of the modulation coding mode in the downlink control information under the condition that the terminal obtains the preset identifier.

Optionally, a preset identifier is used to indicate dynamic configuration, that is, the terminal is indicated to search an index and a scaling of an offset value corresponding to the number of the modulation and coding scheme in the radio resource control signaling. And if the preset identification does not exist in the radio resource control signaling, sending the index and the scaling of the fixed offset value to the terminal.

The preset identifier only identifies Dynamic configuration, And when DCI0_0 is adopted for issuing during uplink data scheduling authorization, And a cell with UCI multiplexed to PUSCH or a cell with UCI multiplexed to PUSCH Of a cell group is configured as a Dynamic scenario, Map-Of-Mcs-And-Uci cells in table 3 also need to be configured as 31 sets Of values. The UE may map to corresponding BetaOffsets and Scaling according to the index of the MCS.

In addition, a dynamic configuration mode in a cell UCI-OnPUSCH (Uplink Control Information On Physical Uplink Shared Channel, Uplink Control Information is multiplexed in an Uplink Physical Shared Channel) or a cell CG-UCI-OnPUSCH (communication Group Uplink Control Information On Physical Uplink Shared Channel, cell Group Uplink Control Information is multiplexed in an Uplink Physical Shared Channel) can be simplified into an identifier, and then DCI0_0 is adopted for issuing when Uplink data scheduling authorization is performed, and the cell configuration of UCI multiplexed in the PUSCH is under a dynamic scene.

By the method, the embodiment can save wireless resources and simplify the dynamic configuration mode in the cell UCI-OnPCH or CG-UCI-OnPCH cell.

As shown in fig. 5, the following specifically describes the uplink control information transmission manner in this embodiment by taking as an example the service requirement of the terminal with emphasis on uplink data correctness or the service requirement with emphasis on low delay of downlink data transmission, and taking HARQ-ACK as the target uplink control information, and the specific steps include,

step one, a base station configures an identifier for indicating whether the target uplink control information is dynamically multiplexed to the physical uplink shared channel into Dynamic through RRC signaling;

step two, the base station informs the mapping relation among the MCS, the BetaOffsets index and the Scaling to the terminal through the mapping relation in the RRC signaling;

step three, the terminal acquires the corresponding BetaOffsets index and Scaling through the MCS indication domain in the DCI;

when the service requirement emphasizes the uplink data correctness, as shown in table 1, when the value of the MCS is 2, the UE obtains corresponding BetaOffsets index value and Scaling respectively as 0 and 0.5 through the MCS indication field in the DCI;

when the service requirement emphasizes low delay of downlink data transmission, as shown in table 2, when the value of MCS is 2, the UE obtains corresponding BetaOffsets index value and Scaling respectively 2 and 1 through the MCS indication field in DCI;

and step four, calculating the number of REs occupied by the HARQ-ACK according to the BetaOffsets index and Scaling, and multiplexing the uplink control information to the corresponding REs of the PUSCH.

It should be noted that, when HARQ-ACK is multiplexed on the retransmission data, the BetaOffsets index may take 28 to 31.

As shown in fig. 6, the present embodiment provides an uplink control information transmission method, which is applied to a terminal, and includes: step 601, receiving a radio resource control signaling and downlink control information sent by a base station; the radio resource control signaling is configured with a mapping relation among a number of a modulation coding mode, an index of an offset value and a scaling ratio which are established in advance;

the execution subject in this embodiment is a terminal.

Since the radio resource control signaling is transmitted through the PDSCH, only a few resources in the PDSCH are occupied, and the impact on the load in the PDSCH is negligible. Compared with the prior art, the mapping relation is configured in the radio resource control signaling, so that the load of the PDCCH can be effectively reduced, and the forward resolution of the PDCCH is improved.

And then, the base station sends the configured radio resource control signaling and the configured downlink control information to the terminal.

The terminal receives the radio resource control signaling and the downlink control information, and analyzes the mapping relation among the number of the modulation coding mode, the index of the deviant and the scaling ratio which are established in advance from the radio resource control signaling; and analyzing the number of the modulation coding mode in an indication domain for indicating the modulation coding mode from the downlink control information.

Step 602, according to the number of the modulation coding mode in the downlink control information, searching the index and the scaling ratio of the offset value corresponding to the number of the modulation coding mode in the radio resource control signaling, and according to the index and the scaling ratio of the offset value, multiplexing the target uplink control information onto a physical uplink shared channel for transmission; wherein the downlink control information does not include an indication field of an index of the offset value.

Generally, in a 5G NR system, UCI includes three types of uplink control information of SR, HARQ-ACK, and CSI. Wherein the HARQ-ACK, the aperiodic CSI, and the semi-persistent CSI can be multiplexed for transmission on the PUSCH. Wherein, the CSI comprises two parts: CSI part1 and CSI part 2.

And then, the terminal uploads the target uplink control information to the base station according to the index and the scaling of the offset value.

The PDCCH resource occupied by the deleted DCI0-1 can be reduced by 2 bits; therefore, under the condition that the CCE resources in the PDCCH are the same, the method in this embodiment may effectively reduce the code rate, increase the number of redundant transmissions, further effectively improve the forward decoding rate of the PDCCH, and improve the throughput of the base station system, thereby effectively ensuring the accuracy of uplink data transmission, and avoiding a phenomenon of an increase in uplink data transmission delay due to repeated transmission caused by an error of DCI 0-1.

Compared with the prior art, in the present embodiment, in the scenario that UCI is multiplexed to PUSCH and configured dynamically, the Beta _ offset indicator field in DCI0_1 is deleted, and the PDCCH resource occupied by DCI0_1 is reduced. Through multiplexing an indication field of a modulation coding mode in DCI0_0 or DCI0_1, indicating UE to select appropriate BetaOffsets and Scaling, and dynamically multiplexing UCI and PUSCH data, not only unifying the BetaOffsets and Scaling modes of UCI of different DCI format indication terminals, but also not needing to formulate different indication modes according to different formats; and the indications in different formats are unified, and are all indication fields of modulation coding modes, so that when the BetaOffsets and Scaling of the UCI of the indication terminal are used, a unified collaborative processing flow can be adopted, the protocol processing flow is effectively simplified, and unified management is facilitated.

In this embodiment, a mapping relationship between a number of a modulation coding scheme, an index of an offset value, and a scaling ratio, which is established in advance, is directly configured in a radio resource control signaling, and the configured radio resource control signaling and downlink control information are sent to a terminal, so that the terminal can obtain the index and the scaling ratio of a corresponding offset value directly according to the number of the modulation coding scheme in the downlink control information, which not only can reduce resources of a PDCCH occupied by setting a Beta _ offset Indicator indication field in DCI0_1, reduce the load size of the PDCCH, reduce a code rate, increase the number of redundant transmissions, improve the forward resolution of the PDCCH and the system throughput of a base station, further improve the accuracy of uplink control information transmission and reduce the delay of uplink data transmission, but also can effectively improve the experience of a user.

On the basis of the foregoing embodiment, in this embodiment, multiplexing the target uplink control information onto the physical uplink shared channel for transmission according to the index and the scaling of the offset value includes: calculating frequency domain resources used for transmitting the target uplink control information in the physical uplink shared channel according to the index and the scaling of the offset value; and multiplexing the target uplink control information to a physical uplink shared channel for transmission according to the frequency domain resources.

Optionally, the terminal calculates, according to the index and the scaling of the offset value, the frequency domain resource of the physical uplink shared channel that needs to be occupied by the target uplink control information when the index and the scaling of the offset value are found;

and then, multiplexing the target uplink control information to a physical uplink shared channel according to the corresponding frequency domain resource space for transmission so as to upload the target uplink control information to the base station.

The following describes the uplink control information transmission apparatus provided in the present invention, and the uplink control information transmission apparatus described below and the uplink control information transmission method described above may be referred to in correspondence with each other.

As shown in fig. 7, the present embodiment provides an uplink control information transmission apparatus, which is applied to a base station, and the apparatus includes a configuration module 701 and a sending module 702, where:

the configuration module 701 is configured to configure a mapping relationship between a number of a modulation coding scheme, an index of an offset value, and a scaling ratio, which are established in advance, in a radio resource control signaling;

the execution subject in this embodiment is a base station.

Since the radio resource control signaling is transmitted in the PDSCH, only a few resources in the PDSCH are occupied, and the impact on the load in the PDSCH is negligible. Compared with the prior art, the mapping relation is configured in the radio resource control signaling, so that the load of the PDCCH can be effectively reduced, and the forward resolution of the PDCCH is improved.

The sending module 702 is configured to send the configured radio resource control signaling and the downlink control information to a terminal, so that the terminal searches, according to the number of the modulation and coding scheme in the downlink control information, for an index and a scaling ratio of an offset value corresponding to the number of the modulation and coding scheme in the radio resource control signaling, and multiplexes the target uplink control information onto a physical uplink shared channel for transmission according to the index and the scaling ratio of the offset value; wherein the downlink control information does not include an indication field of an index of the offset value.

The target downlink control information includes one or more of HARQ-ACK, aperiodic CSI, and semi-persistent CSI, which is not specifically limited in this embodiment.

As shown in fig. 3 and 4, the base station further transmits downlink control information to the terminal to inform the terminal of a number of a modulation and coding scheme in an indication field for indicating the modulation and coding scheme in the downlink control information.

On the basis of the above embodiment, the present embodiment further includes a selecting module, configured to: determining the index of the offset value in the mapping relation according to the range of the index of the offset value; wherein the range of the index of the offset value is the same as the range of the number of the modulation coding scheme; selecting a scaling in the mapping relationship from a plurality of pre-configured scaling.

As shown in fig. 8, the present embodiment provides an uplink control information transmission apparatus, which is applied to a terminal, and the apparatus includes a receiving module 801 and a transmitting module 802, where:

the receiving module 801 is configured to receive a radio resource control signaling and downlink control information sent by a base station; the radio resource control signaling is configured with a mapping relation among a number of a modulation coding mode, an index of an offset value and a scaling ratio which are established in advance;

the execution subject in this embodiment is a terminal.

The transmission module 802 is configured to search, in the radio resource control signaling, an index and a scaling ratio of an offset value corresponding to the modulation coding scheme number according to the modulation coding scheme number in the downlink control information, and multiplex the target uplink control information onto a physical uplink shared channel for transmission according to the index and the scaling ratio of the offset value; wherein the downlink control information does not include an indication field of an index of the offset value.

The PDCCH resource occupied by the deleted DCI0-1 can be reduced by two 2 bits; therefore, under the condition that CCE resources in the PDCCH are the same, the method in this embodiment may effectively reduce a code rate, increase the number of redundant transmissions, further effectively improve a forward decoding rate of the PDCCH, and improve throughput of the base station system, thereby effectively ensuring accuracy of uplink control information transmission, and avoiding a phenomenon of an increase in delay of uplink control information transmission due to repeated transmission of erroneous uplink control information.

On the basis of the foregoing embodiment, the transmission module in this embodiment is specifically configured to: calculating frequency domain resources used for transmitting the target uplink control information in the physical uplink shared channel according to the index and the scaling of the offset value; and multiplexing the target uplink control information to a physical uplink shared channel for transmission according to the frequency domain resources.

Fig. 9 illustrates a physical structure diagram of an electronic device, and as shown in fig. 9, the electronic device may include: a processor (processor)901, a communication Interface (Communications Interface)902, a memory (memory)903 and a communication bus 904, wherein the processor 901, the communication Interface 902 and the memory 903 are communicated with each other through the communication bus 904. Processor 901 may invoke logic instructions in memory 903 to perform a method of uplink control information transmission, the method comprising: configuring the mapping relation among the number of the modulation coding mode, the index of the deviant and the scaling ratio which are established in advance in the wireless resource control signaling; sending the configured radio resource control signaling and downlink control information to a terminal so that the terminal searches an index and a scaling ratio of an offset value corresponding to the number of the modulation coding mode in the radio resource control signaling according to the number of the modulation coding mode in the downlink control information, and multiplexes target uplink control information to a physical uplink shared channel for transmission according to the index and the scaling ratio of the offset value; wherein the downlink control information does not include an indication field of an index of the offset value.

In addition, the logic instructions in the memory 903 may be implemented in a software functional unit and stored in a computer readable storage medium when the logic instructions are sold or used as a separate product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute 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), a magnetic disk or an optical disk, and other various media capable of storing program codes.

In another aspect, the present invention further provides a computer program product, where the computer program product includes a computer program, the computer program can be stored on a non-transitory computer-readable storage medium, and when the computer program is executed by a processor, a computer can execute the uplink control information transmission method provided by the above methods, where the method includes: configuring the mapping relation among the number of the modulation coding mode, the index of the deviant and the scaling ratio which are established in advance in the wireless resource control signaling; sending the configured radio resource control signaling and downlink control information to a terminal so that the terminal searches an index and a scaling ratio of an offset value corresponding to the number of the modulation coding mode in the radio resource control signaling according to the number of the modulation coding mode in the downlink control information, and multiplexes target uplink control information to a physical uplink shared channel for transmission according to the index and the scaling ratio of the offset value; wherein the downlink control information does not include an indication field of an index of the offset value.

In still another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to execute the uplink control information transmission method provided by the above methods, the method including: configuring the mapping relation among the number of the modulation coding mode, the index of the deviant and the scaling ratio which are established in advance in the wireless resource control signaling; sending the configured radio resource control signaling and downlink control information to a terminal so that the terminal searches an index and a scaling ratio of an offset value corresponding to the number of the modulation coding mode in the radio resource control signaling according to the number of the modulation coding mode in the downlink control information, and multiplexes target uplink control information to a physical uplink shared channel for transmission according to the index and the scaling ratio of the offset value; wherein the downlink control information does not include an indication field of an index of the offset value.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A method for transmitting uplink control information is applied to a base station, and is characterized by comprising the following steps:

2. The uplink control information transmission method according to claim 1, wherein before the mapping relationship between the number of the pre-established modulation and coding scheme, the index of the offset value, and the scaling is configured in the radio resource control signaling, the method further comprises:

3. The uplink control information transmission method according to claim 1 or 2, wherein a preset identifier is further configured in the radio resource control signaling; the preset identifier is used for indicating the terminal to search an index and a scaling of an offset value corresponding to the number of the modulation coding mode in the radio resource control signaling;

4. An uplink control information transmission method is applied to a terminal, and is characterized by comprising the following steps:

5. The uplink control information transmission method according to claim 4, wherein the multiplexing the target uplink control information onto the physical uplink shared channel for transmission according to the index and the scaling of the offset value comprises:

6. An uplink control information transmission apparatus applied to a base station, comprising:

7. An uplink control information transmission apparatus applied to a terminal, comprising:

8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the method for uplink control information transmission according to any of claims 1 to 5 when executing the program.

9. A non-transitory computer readable storage medium, having a computer program stored thereon, wherein the computer program, when being executed by a processor, implements the steps of the uplink control information transmission method according to any one of claims 1 to 5.

10. A computer program product comprising a computer program, wherein the computer program is adapted to perform the steps of the uplink control information transmission method according to any one of claims 1 to 5 when executed by a processor.