WO2021027605A1

WO2021027605A1 - Method and apparatus for receiving and sending downlink control information

Info

Publication number: WO2021027605A1
Application number: PCT/CN2020/106513
Authority: WO
Inventors: 刘显达; 薛丽霞; 刘鹍鹏; 张旭; 陈铮
Original assignee: 华为技术有限公司
Priority date: 2019-08-15
Filing date: 2020-08-03
Publication date: 2021-02-18
Also published as: CN112399436A

Abstract

The present application provides a method and apparatus for receiving downlink control information (DCI) and sending DCI, which can be applied to a coordinated multi-point transmission and reception (CoMP) scenario and which can reduce the complexity of blind DCI detection by a terminal device. The method comprises: receiving first configuration information and second configuration information, said first configuration information and second configuration information being used for determining the payload size of a first DCI format and the payload size of a second DCI format, respectively, the first configuration information and the second configuration information being sent by different transmission points; by means of filling in zeros or truncating in the first DCI format and/or filling in zeros or truncating in the second DCI format, the payload size of the first DCI format is caused to be the same as the payload size of the second DCI format, reducing the number of DCI formats having different payload sizes and thereby reducing the complexity of blind detection of DCI by a terminal device.

Description

Method and device for receiving and sending downlink control information

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910755802.6, and the application name is "Method and Apparatus for Receiving and Sending Downlink Control Information" on August 15, 2019, the entire content of which is incorporated by reference In this application.

Technical field

This application relates to the field of wireless communication, and more specifically, to a method for receiving downlink control information (DCI), a method and a device for sending DCI.

Background technique

With the rapid development of mobile communication, in the future 5th-generation (5G) mobile communication technology, there are many aspects such as system capacity, instantaneous peak rate, spectrum efficiency, cell edge user throughput, and delay. higher requirement. Therefore, coordinated multiple points transmission/reception (CoMP) technology is proposed.

CoMP technology aims to achieve coordinated transmission between transmission points in different geographical locations. At present, the CoMP technology can improve system performance, especially the spectrum efficiency at the edge of the cell, whether in uplink or downlink. The current mainstream CoMP technology implementation methods can be divided into joint processing (JP) technology and coordinated scheduling/beamforming (CS/CB) technology.

In the scenario of multipoint transmission, each transmission point can send DCI to the terminal device separately, the terminal device may need to blindly detect the DCI sent by multiple transmission points at the same time, and the payload size of different DCIs is configured independently by different transmission points. of. The current agreement stipulates a way to align the payload size of the DCI format to ensure that the number of DCI formats with different payload sizes that the terminal device needs to detect in a carrier does not exceed the threshold, thereby reducing the blind detection of DCI by the terminal device Complexity, but due to the multi-point coordinated transmission mechanism, even the same DCI format will have multiple payload sizes, so that the existing DCI format payload size alignment method does not guarantee that the number of DCI formats is controlled within the threshold Value range.

Therefore, how to reduce the complexity of blind detection of DCI by terminal devices in the CoMP scenario has become an urgent problem to be solved.

Summary of the invention

This application provides a method for receiving downlink control information DCI and a method and device for sending DCI. By aligning the payload size of the DCI format issued by different transmission points, the complexity of blind DCI detection by terminal equipment in the CoMP scenario can be reduced.

In the first aspect, a method for receiving downlink control information DCI is provided. The method for receiving downlink control information DCI may be executed by a terminal device, or may also be executed by a chip or a circuit provided in the terminal device. Not limited.

The method for receiving downlink control information DCI includes:

Receive first configuration information, where the first configuration information is used to determine the payload size of the first DCI format; receive second configuration information, where the second configuration information is used to determine the payload size of the second DCI format; The first configuration information and the second configuration information respectively correspond to two different control resource set (CORESET) groups; at least one of the following methods is used to make the payload size of the first DCI format and the second The payload size of the DCI format is the same: when the payload size of the first DCI format is smaller than the payload size of the second DCI format, fill in zeros in the first DCI format until the number of bits in the first DCI format is equal to the second The number of bits in the DCI format; when the payload size of the first DCI format is greater than the payload size of the second DCI format, fill in zeros in the second DCI format until the number of bits in the second DCI format is equal to the first DCI The number of bits in the format; when the payload size of the first DCI format is smaller than the payload size of the second DCI format, truncated in the second DCI format until the number of bits in the second DCI format is equal to that of the first DCI format Number of bits; when the payload size of the first DCI format is greater than the payload size of the second DCI format, truncated in the first DCI format until the number of bits in the first DCI format is equal to the number of bits in the second DCI format number.

In the method for receiving DCI of downlink control information provided by the embodiment of the present application, the terminal device receives the first configuration information and the second configuration information corresponding to different CORESET groups. Specifically, the terminal device determines that the DCI detected on the first CORESET group is The first DCI and the DCI detected on the second CORESET group is the second DCI. Further, the terminal device determines that the first CORESET group has an association relationship with the first configuration information, and the second CORESET group has a relationship with the second configuration information, based on The first configuration information and the second configuration information respectively determine the payload size of the first DCI format and the payload size of the second DCI format, and make the payload size of the first DCI format and the second DCI format zero-filled or truncated. The payload size of the DCI format is the same, thereby aligning the payload size of the DCI format issued by different transmission points, which can reduce the complexity of blind detection of the DCI by the terminal device in the CoMP scenario.

The first configuration information and the second configuration information involved in the embodiments of the present application respectively correspond to two different CORESET groups, including the following possible situations:

Case 1: The first CORESET group corresponding to the first configuration information means that the payload size of the DCI detected on the first CORESET group and the field for parsing the DCI are determined according to the first configuration information; In the same way, the second CORESET group corresponding to the second configuration information means that the payload size of the DCI detected on the second CORESET group and the field for analyzing the DCI are determined according to the second configuration information.

Case 2: The first CORESET group corresponding to the first configuration information refers to: the first configuration information is carried in the first CORESET group; similarly, the second CORESET group corresponding to the second configuration information refers to: the second configuration The information is carried in the second CORESET group.

Case 3: The first CORESET group corresponding to the first configuration information means that the first configuration information is the configuration information sent by the first TRP, and the first CORESET group is the CORESET group configured by the first TRP or is associated with the first TRP Similarly, the second CORESET group corresponding to the second configuration information refers to: the second configuration information is the configuration information sent by the second TRP, and the second CORESET group is the CORESET group configured by the second TRP or with CORESET group associated with the second TRP.

Optionally, the method for distinguishing the first DCI from the second DCI may also be that the DCI carries signaling to indicate that the DCI is the first DCI or the second DCI. For example, the DCI includes 1-bit signaling, the DCI indicated by the signaling as 0 serves as the first DCI, and the DCI indicated by the signaling as 1 serves as the second DCI. For another example, physical uplink control channel (PUCCH) resources are divided into two groups, and the DCI corresponding to PUCCH group 1 is indicated as the first DCI, and the DCI corresponding to PUCCH group 2 is indicated as the second DCI. For another example, the hybrid automatic repeat request (HARQ) processing process number is divided into two groups, and the DCI corresponding to HARQ processing process number group 1 is indicated as the first DCI, and the DCI corresponding to HARQ processing process number group 2 is indicated as The second DCI.

It should be understood that the embodiments of the present application do not limit the terminal device to only receive the above-mentioned first configuration information and second configuration information, and may also receive other configuration information. For example, it may also receive third configuration information and first configuration information. Four configuration information, where the third CORESET group corresponds to the third configuration information, and the fourth CORESET group corresponds to the fourth configuration information.

It should also be understood that padding 0 in the DCI format in the embodiment of the present application refers to adding n bits and setting all the added n bits to 0 based on the bits of the DCI format determined according to the configuration information. In the embodiment of this application, there is no limitation on other forms of padding 0 in the DCI format. You can refer to the solution of padding 0 in the DCI format specified in the current protocol TS 38.212. It can also be replaced with 1 in the DCI format.

Optionally, filling 0 in the DCI format may mean adding n bits to the end of the bits of the DCI format determined according to the corresponding configuration information and setting all the added n bits to 0.

Optionally, filling 0 in the DCI format may mean adding n bits to the end of the bit corresponding to a certain field in the bits of the DCI format determined according to the corresponding configuration information, and all the added n bits are set to 0.

It should also be understood that performing truncation in the DCI format in the embodiment of the present application refers to discarding certain bits to form a shorter bit number based on the bits of the DCI format determined according to the configuration information. There is no restriction on how to perform truncation in the DCI format. You can refer to the solution for performing truncation in the DCI format specified in the current protocol TS 38.212.

Optionally, truncation is performed in the DCI format, and the position of the truncation may be n bits in the frequency domain resource allocation field, and may also be the first n bits or the last n bits in the frequency domain resource allocation field.

Optionally, the position at which truncation is performed in the DCI format may be the least important n bits in the DCI format, where the important bits include systematic bits and bits indicating the DCI type, for example, the least important n bits. The bit can be the last n bits in the DCI format.

For ease of description, the first configuration information is sent to the terminal device as the first transmission point (TRP#1) in the following to determine the payload size of the first DCI format, and the second configuration information is the second transmission point (TRP# 2) It is sent to the terminal device to determine the payload size of the second DCI format as an example for description.

Optionally, the first configuration information used to determine the payload size of the first DCI format includes: the first configuration information configures whether certain fields in the first DCI format exist, or the first configuration information configures certain fields in the first DCI format. The number of bits in these fields. The second configuration information used to determine the payload size of the second DCI format includes: the second configuration information configures whether certain fields in the second DCI format exist, or the second configuration information configures bits of certain fields in the second DCI format Digits.

It should be understood that this application does not limit the specific communication between a terminal device and multiple transmission points, and the above TRP#1 and TRP#2 are only examples, and do not constitute any limitation to the protection scope of this application.

With reference to the first aspect, in some implementations of the first aspect, the first DCI format includes a third DCI format and a fourth DCI format configured in the user-specific search space USS, and the second DCI format includes configuration The fifth DCI format and the sixth DCI format in the USS, where the third DCI format and the fifth DCI format are used for scheduling downlink transmission, and the fourth DCI format and the sixth DCI format are used for scheduling uplink transmission.

Optionally, the third, fourth, fifth, and sixth DCI formats are enhanced DCI formats, that is, the DCI format may include one or more of the following fields: a BWP indicator field with configurable bits to indicate the current carrier Internally activated BWP; time domain resource location indication field with configurable bits, used to indicate the time domain resource location occupied by the PDSCH; precoding resource block (PRB) bundling size indication field with configurable bits , Used to indicate the same precoding frequency domain resource granularity in the physical downlink shared channel (PDSCH); the rate matching resource indication field with configurable bits is used to indicate the rate matching resource corresponding to the PDSCH; Zero-power channel estimation reference signal (channel state information reference signal, CSI-RS) trigger field configured with the number of bits, used to trigger a zero-power CSI-RS resource set; transmission block (transmission block, TB) 2 modulation and coding scheme , New data indication, redundancy version indication fields, used to indicate the transmission scheme of the second TB; configurable bit number of PDSCH to hybrid automatic repeat request-acknowledge (HARQ-ACK) feedback timing The indication field is used to indicate the time domain resources that carry PDSCH feedback information; the transmission configuration indication field with configurable bits is used to indicate the QCL hypothesis for receiving PDSCH and corresponding DMRS; the sounding reference signal with configurable bits signal, SRS) trigger field, used to trigger SRS resource set; configurable bit number of precoding information and layer number indication field, used to indicate the number of ports occupied by data transmission and precoding information; CSI with configurable bit number The request trigger indication field is used to trigger CSI reporting; the DMRS sequence initialization indication field with configurable bits is used to indicate the initialization value of the DMRS sequence.

Optionally, the scrambling code of the DCI in the third, fourth, fifth, sixth, seventh, eighth, ninth, and tenth DCI format is configured by UE-specific RRC signaling.

At least one of the following methods is used to make the payload size of the third DCI format the same as the payload size of the fifth DCI format: when the payload size of the third DCI format is greater than the payload size of the fifth DCI format Size, determine the bit number of the third DCI format and the fifth DCI format, fill in the fifth DCI format until the bit number of the fifth DCI format is equal to the bit number of the third DCI format; when the third DCI format The payload size of the format is smaller than the payload size of the fifth DCI format, the number of bits in the third DCI format and the fifth DCI format is determined, and zero is filled in the third DCI format until the number of bits in the third DCI format is equal to The number of bits in the fifth DCI format; at least one of the following methods is used to make the payload size of the fourth DCI format the same as the payload size of the sixth DCI format: when the payload size of the fourth DCI format Greater than the payload size of the sixth DCI format, determine the bit number of the fourth DCI format and the sixth DCI format, and fill in the sixth DCI format with zeros until the bit number of the sixth DCI format is equal to the fourth DCI format When the payload size of the fourth DCI format is smaller than the payload size of the sixth DCI format, determine the number of bits of the fourth DCI format and the sixth DCI format, and fill in the fourth DCI format with zeros Until the number of bits in the fourth DCI format is equal to the number of bits in the sixth DCI format.

Based on the foregoing technical solution, the foregoing first DCI format includes the third DCI format and the fourth DCI format configured in the user-specific search space USS, and the second DCI format includes the fifth DCI format configured in the user-specific search space USS In the case of the format and the sixth DCI format, the third and fifth DCI formats are used to schedule downlink transmission, and the fourth and sixth DCI formats are used to schedule uplink transmission, aligning the payload size of the first DCI format and The payload size of the first DCI format may be aligned with the payload size of the third DCI format and the payload size of the fifth DCI format, and aligned with the payload size of the fourth DCI format and the payload size of the sixth DCI format, namely By aligning the payload size of the DCI format used for scheduling downlink transmission in the DCI format issued by different transmission points, and the payload size of the DCI format used for scheduling uplink transmission, it is possible to align the different user-specific search spaces in the USS. The payload size of the DCI format issued by the transmission point can reduce the complexity of blind detection of the DCI by the terminal device in the CoMP scenario.

It should be understood that making the payload size of the third DCI format the same as the payload size of the fifth DCI format described above in the embodiments of the present application is not a step that must be performed by the terminal device. For example, the protocol stipulates TRP#1 and TRP. #2 When the payload size of the third DCI format sent separately and the payload size of the fifth DCI format are the same, the terminal device does not need to perform the above-mentioned alignment of the payload size of the third DCI format with the payload size of the fifth DCI format Similarly, in the embodiment of this application, making the payload size of the fourth DCI format the same as the payload size of the sixth DCI format is not a step that must be performed by the terminal device. For example, the protocol stipulates TRP When the payload size of the fourth DCI format and the payload size of the sixth DCI format sent by #1 and TRP#2 are the same, the terminal device does not need to perform the above-mentioned alignment of the payload size of the fourth DCI format with the sixth DCI format The steps of the payload size.

With reference to the first aspect, in some implementations of the first aspect, the first DCI format includes a third DCI format and a fourth DCI format configured in the user-specific search space USS, and the second DCI format includes The fifth DCI format and the sixth DCI format configured in the USS, where the third DCI format and the fifth DCI format are used for scheduling downlink transmission, and the fourth DCI format and the sixth DCI format are used for scheduling uplink Transmission; at least one of the following methods is used to make the payload size of the third DCI format the same as the payload size of the fourth DCI format, the payload size of the fifth DCI format and the validity of the sixth DCI format The payload size is the same: when the payload size of the third DCI format is greater than the payload size of the fourth DCI format, determine the number of bits in the third DCI format and the fourth DCI format, and fill in the fourth DCI format with zeros until The number of bits in the fourth DCI format is equal to the number of bits in the third DCI format; when the payload size of the third DCI format is smaller than the payload size of the fourth DCI format, determine whether the third DCI format and the fourth DCI format are The number of bits in the third DCI format is filled with zeros until the number of bits in the third DCI format is equal to the number of bits in the fourth DCI format; when the payload size of the fifth DCI format is greater than the validity of the sixth DCI format Payload size, determine the number of bits in the fifth DCI format and the sixth DCI format, fill in the sixth DCI format until the number of bits in the sixth DCI format is equal to the number of bits in the fifth DCI format; when the fifth The payload size of the DCI format is smaller than the payload size of the sixth DCI format, and zeros are filled in the fifth DCI format until the number of bits in the fifth DCI format is equal to the number of bits in the sixth DCI format.

Based on the foregoing technical solution, the foregoing first DCI format includes the third DCI format and the fourth DCI format configured in the user-specific search space USS, and the second DCI format includes the fifth DCI format and the fourth DCI format configured in the user-specific search space USS. In the case of the sixth DCI format, the third DCI format and the fifth DCI format are used for scheduling downlink transmission, and the fourth DCI format and the sixth DCI format are used for scheduling uplink transmission. The data included in the first DCI format can be aligned with The payload size of the third DCI format for scheduling downlink transmission and the payload size of the fourth DCI format for scheduling uplink transmission, the payload size of the fifth DCI format for scheduling downlink transmission included in the second DCI format, and The payload size of the sixth DCI format used for scheduling uplink transmission, that is, the payload size of the DCI format used for scheduling downlink transmission and the DCI format used for scheduling uplink transmission in the DCI formats issued by different transmission points are aligned, so as to realize the difference Aligning the payload size of the DCI format issued by different transmission points in the user-specific search space USS can reduce the complexity of blind DCI detection by the terminal device in the CoMP scenario.

It should be understood that in the embodiments of the present application, making the payload size of the third DCI format the same as the payload size of the fourth DCI format is not a step that must be performed by the terminal device. For example, the protocol stipulates that TRP#1 sends When the payload size of the third DCI format is the same as the payload size of the fourth DCI format, the terminal device does not need to perform the aforementioned step of aligning the payload size of the third DCI format with the payload size of the fourth DCI format; Therefore, in the embodiments of the present application, making the payload size of the fifth DCI format the same as the payload size of the sixth DCI format is not a step that must be performed by the terminal device. For example, the protocol stipulates that TRP#2 sends the first step. When the payload size of the fifth DCI format is the same as the payload size of the sixth DCI format, the terminal device does not need to perform the step of aligning the payload size of the fifth DCI format with the payload size of the sixth DCI format.

With reference to the first aspect, in some implementations of the first aspect, the first DCI format further includes a seventh DCI format and an eighth DCI format configured in the USS, and the second DCI format further includes The ninth DCI format and the tenth DCI format in the USS, where the payload size of the seventh DCI format and the ninth DCI format is determined according to the currently activated uplink BWP size and used for scheduling uplink transmission; the eighth DCI The format and the payload size of the tenth DCI format are equal to the first payload size, determined according to the currently activated downlink BWP size, and used for scheduling downlink transmission;

Optionally, the seventh, eighth, ninth, and tenth DCI formats are basic DCI formats compared to the third, fourth, fifth, and sixth DCI formats, that is, the above-mentioned third, fourth, fifth, and fifth DCI formats may not be included in the DCI format. Six part or all of the configurable fields included in the DCI format.

Optionally, the seventh, eighth, ninth, and ten DCI formats are basic DCI formats compared to the third, fourth, fifth, and sixth DCI formats, that is, configurable in the seventh, eighth, ninth, and ten DCI formats The field has a frequency domain position indication field of the PDSCH, and the number of bits in this field is determined according to the number of RBs included in the BWP in the current carrier.

Optionally, the seventh, eighth, ninth, and ten DCI formats are basic DCI formats compared to the third, fourth, fifth, and sixth DCI formats, that is, configurable in the seventh, eighth, ninth, and ten DCI formats The field also has an uplink frequency band indication field, which is used to indicate whether to enable multiple uplink frequency bands.

Optionally, when the payload size of the eighth DCI format before zero-filling is greater than the payload size of the seventh DCI format before zero-filling, the number of bits in the uplink band indication field in the seventh DCI format is 1. The payload size of the tenth DCI format before zero is greater than the payload size of the ninth DCI format before zero filling, and the number of bits in the uplink frequency band indication field in the ninth DCI format is 1.

Optionally, the seventh, eighth, ninth, and tenth DCI formats can be used in the RRC reconfiguration phase.

Optionally, the terminal device adopts at least one of the following ways to make the payload size of the seventh DCI format and the ninth DCI format equal to the first payload size: when the payload size of the seventh DCI format Greater than the first payload size, determine the number of bits in the seventh DCI format, truncated in the seventh DCI format until the number of bits in the seventh DCI format is equal to the first payload size; when the seventh DCI format is valid If the payload size is smaller than the first payload size, determine the number of bits in the seventh DCI format, and fill in zeros in the seventh DCI format until the number of bits in the seventh DCI format is equal to the first payload size; when the ninth DCI format The payload size of the format is greater than the first payload size, determining the number of bits in the ninth DCI format, and truncating in the ninth DCI format until the number of bits in the ninth DCI format is equal to the number of bits in the tenth DCI format; When the payload size of the ninth DCI format is smaller than the first payload size, determine the number of bits of the ninth DCI format, and fill in zeros in the ninth DCI format until the number of bits of the ninth DCI format is equal to the tenth DCI The number of bits in the format.

Based on the foregoing technical solution, the foregoing first DCI format includes the seventh DCI format and the eighth DCI format configured in the user-specific search space USS, and the second DCI format includes the ninth DCI format and the eighth DCI format configured in the user-specific search space USS. In the case of the tenth DCI format, the payload size of the seventh DCI format and the ninth DCI format is only determined according to the currently activated uplink BWP size and used for scheduling uplink transmission. The eighth DCI format and the tenth DCI format The payload size is equal to the first payload size, which is determined according to the currently activated downlink BWP size and used for scheduling downlink transmissions. It can align the payload size of the seventh DCI format with the payload size of the eighth DCI format, and align the ninth DCI The payload size of the format and the payload size of the tenth DCI format are respectively aligned with the DCI format used for scheduling downlink transmission and the DCI format used for scheduling uplink transmission in the DCI formats issued by different transmission points, and when When the payload size of the eighth DCI format and the tenth DCI format is only determined according to the currently activated downlink BWP size, the payload size of the eighth DCI format and the tenth DCI format can be the same by default, so as to align the user-specific search space The payload size of the DCI format issued by different transmission points in the USS can reduce the complexity of the blind detection of the DCI by the terminal equipment in the CoMP scenario.

Optionally, as a possible implementation manner, in this embodiment of the present application, the payload size of the seventh DCI format and the ninth DCI format are the same as the first payload size, then the terminal device adopts the following At least one of the ways to make the payload size of the eighth DCI format and the tenth DCI format equal to the first payload size: when the payload size of the eighth DCI format is greater than the first payload size, determine The number of bits in the eighth DCI format is truncated in the eighth DCI format until the number of bits in the eighth DCI format is equal to the first payload size; when the payload size of the eighth DCI format is smaller than the first payload size , Determine the number of bits in the eighth DCI format, and fill in zeros in the eighth DCI format until the number of bits in the eighth DCI format is equal to the first payload size; when the payload size of the tenth DCI format is greater than the first Payload size, determine the number of bits in the tenth DCI format, truncated in the tenth DCI format until the number of bits in the tenth DCI format is equal to the first payload size; when the payload size of the tenth DCI format is smaller than the The first payload size determines the number of bits of the tenth DCI format, and fills in the tenth DCI format until the number of bits of the tenth DCI format is equal to the first payload size.

Optionally, in the foregoing steps, the number of bits in the seventh DCI format is greater than the number of bits in the eighth DCI format, and the number of bits in the ninth DCI format is greater than the number of bits in the tenth DCI format.

Optionally, the terminal device may also use at least one of the following methods to make the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format equal to the first payload Size, where the first payload size is the payload size with the largest payload size among the payload sizes of the eighth DCI format and the tenth DCI format: if the payload size of the eighth DCI format is smaller than the first Payload size, determine the number of bits in the eighth DCI format, fill in the eighth DCI format until the number of bits in the eighth DCI format is equal to the first payload size; if the payload size of the tenth DCI format is less than The first payload size determines the number of bits in the tenth DCI format, and fills in zeros in the tenth DCI format until the number of bits in the tenth DCI format is equal to the first payload size; if the seventh DCI format is valid If the size of the payload is smaller than the size of the first payload, the number of bits in the seventh DCI format is determined, and zero is filled in the seventh DCI format until the number of bits in the seventh DCI format is equal to the size of the first payload; if the seventh DCI If the size of the payload of the format is greater than the size of the first payload, the number of bits in the seventh DCI format is determined, and the seventh DCI format is truncated until the number of bits in the seventh DCI format is equal to the size of the first payload; 9. The payload size of the DCI format is smaller than the first payload size, and the number of bits in the ninth DCI format is determined, and zero is filled in the ninth DCI format until the number of bits in the ninth DCI format is equal to the first payload size; If the payload size of the ninth DCI format is greater than the first payload size, determine the number of bits in the ninth DCI format, and truncate in the ninth DCI format until the number of bits in the ninth DCI format is equal to the first payload size.

Optionally, the terminal device may also use at least one of the following methods to make the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format equal to the first payload Size, where the first payload size is the payload size with the largest payload size among the payload sizes of the seventh DCI format and the ninth DCI format: if the payload size of the seventh DCI format is smaller than the first Payload size, determine the number of bits in the seventh DCI format, and fill in zeros in the seventh DCI format until the number of bits in the seventh DCI format is equal to the first payload size; if the payload size of the ninth DCI format is less than The first payload size determines the number of bits in the ninth DCI format, and fills in zeros in the ninth DCI format until the number of bits in the ninth DCI format is equal to the first payload size; if the eighth DCI format is valid If the size of the payload is smaller than the size of the first payload, the number of bits in the eighth DCI format is determined, and zero is filled in the seventh DCI format until the number of bits in the eighth DCI format is equal to the size of the first payload; if the eighth DCI If the payload size of the format is greater than the first payload size, the number of bits in the eighth DCI format is determined, and the eighth DCI format is truncated until the number of bits in the eighth DCI format is equal to the first payload size; The payload size of the tenth DCI format is smaller than the first payload size, and the number of bits in the tenth DCI format is determined, and zero is filled in the tenth DCI format until the number of bits in the tenth DCI format is equal to the first payload size; If the payload size of the tenth DCI format is greater than the first payload size, determine the number of bits of the tenth DCI format, and truncate in the tenth DCI format until the number of bits of the tenth DCI format is equal to the first payload size.

Optionally, the terminal device may also use at least one of the following methods to make the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format equal to the first payload Size, where the first payload size is the payload size with the largest payload size among the payload sizes of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format: if the The payload size of the eighth DCI format is smaller than the first payload size, and the number of bits in the eighth DCI format is determined, and zero is filled in the eighth DCI format until the number of bits in the eighth DCI format is equal to the first payload size ; If the payload size of the tenth DCI format is less than the first payload size, determine the number of bits of the tenth DCI format, and fill in zeros in the tenth DCI format until the number of bits of the tenth DCI format is equal to the first Payload size; if the payload size of the seventh DCI format is smaller than the first payload size, determine the number of bits in the seventh DCI format, and fill in the seventh DCI format with zeros until the number of bits in the seventh DCI format Equal to the first payload size; if the payload size of the ninth DCI format is smaller than the first payload size, determine the number of bits in the ninth DCI format, and fill in zeros in the ninth DCI format until the ninth DCI format The number of bits is equal to the size of the first payload.

Optionally, the terminal device may also use at least one of the following methods to make the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format equal to the first payload Size, where the first payload size is the payload size with the smallest payload size among the payload sizes of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format: if the The payload size of the eighth DCI format is greater than the first payload size, determining the number of bits in the eighth DCI format, and truncating in the eighth DCI format until the number of bits in the eighth DCI format is equal to the first payload size; If the payload size of the tenth DCI format is greater than the first payload size, determine the number of bits of the tenth DCI format, and truncate in the tenth DCI format until the number of bits of the tenth DCI format is equal to the first payload Size; if the payload size of the seventh DCI format is greater than the first payload size, determine the number of bits in the seventh DCI format, and truncate in the seventh DCI format until the number of bits in the seventh DCI format is equal to the first Payload size; if the payload size of the ninth DCI format is greater than the first payload size, determine the number of bits in the ninth DCI format, and truncate in the ninth DCI format until the number of bits in the ninth DCI format is equal to The first payload size.

A possible implementation is to make the payload size of the third DCI format the same as the payload size of the fifth DCI format, and/or make the payload size of the fourth DCI format the same as the sixth DCI format Before the payload size is the same, the payload size of the seventh DCI format and the ninth DCI format is made equal to the first payload size.

A possible implementation is such that the payload size of the seventh DCI format and the ninth DCI format is equal to the first payload size, and the payloads of the third, fourth, fifth, and sixth DCI formats are not aligned.

It should be understood that, in the embodiment of the present application, the payload size of the third DCI format and the payload size of the fifth DCI format, and/or the payload size of the fourth DCI format and the payload size of the sixth DCI format The size of the payload and the sequence of making the payload size of the seventh DCI format and the ninth DCI format equal to the size of the first payload are not specifically specified.

It should also be understood that, in the embodiments of the present application, for the foregoing seventh DCI format, the payload size of the ninth DCI format is equal to the first payload size, and it is not a necessary step. For example, the protocol specifies the seventh DCI format. The payload size of the eighth DCI format is equal to the payload size of the eighth DCI format, there is no need to perform the above-mentioned step that the payload size of the seventh DCI format is equal to the first payload size; and/or the agreement stipulates that the ninth DCI format is valid If the payload size is the sum of the payload size of the tenth DCI format, there is no need to perform the aforementioned step of aligning the payload size of the ninth DCI format with the first payload size.

With reference to the first aspect, in some implementations of the first aspect, the payload size of the third DCI format is made the same as the payload size of the fifth DCI format, and/or the fourth DCI format is made effective After the payload size is the same as the payload size of the sixth DCI format, or after making the payload size of the third DCI format the same as the payload size of the fourth DCI format, and/or, making the fifth DCI format After the payload size of the sixth DCI format is the same as the payload size of the sixth DCI format, the method further includes: when the third DCI format, the fourth DCI format, the fifth DCI format, and any of the sixth DCI format When the size of the payload is equal to the size of the first payload, a zero is filled in the DCI format.

or,

When the payload size of the third DCI format is the same as the payload size of the seventh DCI format or the eighth DCI format, one bit is filled in the third DCI format; when the payload size of the fourth DCI format is the same as the first 7. When the payload size of the DCI format or the eighth DCI format is the same, fill a zero in the fourth DCI format; when the payload size of the fifth DCI format and the payload size of the seventh DCI format or the eighth DCI format When the same, fill a bit with zero in the third DCI format; when the payload size of the sixth DCI format is the same as the payload size of the seventh or eighth DCI format, fill a bit in the fourth DCI format zero.

Based on the above technical solution, the payload size of the third DCI format and the payload size of the fifth DCI format, and/or the payload size of the fourth DCI format and the payload size of the sixth DCI format are aligned After the size, if the payload size of any of the third DCI format, the fourth DCI format, the fifth DCI format, and the sixth DCI format is equal to the first payload size, it is equal to the first payload size Fill in one zero in the DCI format; or,

After aligning the payload size of the third DCI format and the payload size of the fifth DCI format, and/or the payload size of the fourth DCI format and the payload size of the sixth DCI format, if the first 3. The payload size of any DCI format in the DCI format, the fourth DCI format, the fifth DCI format, and the sixth DCI format is equal to the first payload size, and the DCI format equal to the first payload size is filled in One bit zero.

For example, determine the payload size of the basic DCI format used for downlink scheduling in the USS and the payload size of the enhanced DCI format used for downlink scheduling, and compare the basic payload size of the DCI format used for scheduling downlink transmission in the USS The size (the eighth DCI format, the tenth DCI format) and the enhanced payload size of the DCI format used for scheduling downlink transmission (the third DCI format, the fifth DCI format), when the enhanced one is used for scheduling downlink When the payload size of the transmitted DCI format is equal to the payload size of the basic DCI format used for scheduling uplink transmission, fill a bit 0 in the basic DCI format used for scheduling downlink transmission; for the same reason, determine the USS The basic payload size of the DCI format used for uplink scheduling and the payload size of the enhanced DCI format used for uplink scheduling are compared with the basic payload size of the DCI format used for scheduling uplink transmission in the USS (the seventh DCI Format, the ninth DCI format) and the enhanced payload size of the DCI format used for scheduling uplink transmission (the fourth DCI format, the sixth DCI format), when the enhanced DCI format used for scheduling downlink transmission When the payload size of is equal to the payload size of the basic DCI format used for scheduling uplink transmission, fill a bit 0 in the basic DCI format used for scheduling uplink transmission.

With reference to the first aspect, in some implementations of the first aspect, the first DCI format includes the eleventh DCI format and the twelfth DCI format configured in the search space CSS common to the cell, and the second DCI format Includes the thirteenth DCI format and the fourteenth DCI format configured in the CSS, where the eleventh DCI format and the thirteenth DCI format are used for scheduling uplink transmission, and the twelfth DCI format and the tenth DCI format Four DCI format is used for scheduling downlink transmission;

Optionally, the scrambling code of the DCI in the eleventh, twelfth, thirteenth, and fourteenth DCI format is configured by broadcast signaling. Optionally, the eleventh, twelfth, thirteenth, and fourteenth DCI formats are basic DCI formats compared to the third, fourth, fifth, and sixth DCI formats, that is, the eleventh, twelfth, thirteenth, and The fourteen DCI format does not include some or all of the configurable fields included in the third, fourth, fifth, and sixth DCI formats.

Optionally, the eleventh, twelfth, thirteenth, and fourteenth DCI formats are basic DCI formats compared to the third, fourth, fifth, and sixth DCI formats, that is, the eleventh, twelfth, thirteenth, and Fourteen configurable fields in the DCI format include the frequency domain position indication field of the PDSCH. The number of bits in this field is determined according to the number of RBs included in the initial access BWP, or according to the number of RBs included in CORESET 0.

Optionally, the eleventh, twelfth, thirteenth, and fourteenth DCI formats are basic DCI formats compared to the third, fourth, fifth, and sixth DCI formats, that is, the eleventh, twelfth, thirteenth, and The configurable fields in the fourteen DCI format also include an uplink frequency band indication field, which is used to indicate whether to enable multiple uplink frequency bands.

Optionally, when the payload size of the twelfth DCI format before zero-filling is greater than the payload size of the eleventh DCI format before zero-filling, the number of bits in the uplink band indication field in the eleventh DCI format is 1. , When the payload size of the fourteenth DCI format before zero-filling is greater than the payload size of the thirteenth DCI format before zero-filling, the number of bits in the uplink frequency band indication field in the thirteenth DCI format is 1.

Optionally, the eleventh, twelfth, thirteenth, and fourteenth DCI formats can be used in the initial access phase.

At least one of the following methods is adopted to make the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format equal to the second payload size, and the first The second payload size is the payload size of the DCI format with the largest payload size in the twelfth DCI format and the fourteenth DCI format, if the payload size of the twelfth DCI format is smaller than the second payload size, Determine the number of bits in the twelfth DCI format, and fill in zeros in the twelfth DCI format until the number of bits in the twelfth DCI format is equal to the second payload size; if the payload size of the fourteenth DCI format is less than The size of the second payload determines the number of bits in the fourteenth DCI format, and fills in zeros in the fourteenth DCI format until the number of bits in the fourteenth DCI format is equal to the size of the second payload; The payload size of the DCI format is smaller than the second payload size, determine the number of bits of the eleventh DCI format, and fill in zeros in the eleventh DCI format until the number of bits of the eleventh DCI format is equal to the second payload Size; if the payload size of the eleventh DCI format is greater than the second payload size, determine the number of bits in the eleventh DCI format, and truncate the eleventh DCI format to the number of bits in the eleventh DCI format The number is equal to the second payload size; if the payload size of the thirteenth DCI format is smaller than the second payload size, determine the number of bits of the thirteenth DCI format, and fill in the thirteenth DCI format until the first The number of bits in the thirteenth DCI format is equal to the size of the second payload; if the size of the payload of the thirteenth DCI format is greater than the size of the second payload, the number of bits in the thirteenth DCI format is determined. Truncated in the DCI format until the number of bits in the thirteenth DCI format is equal to the second payload size.

Optionally, at least one of the following methods is adopted to make the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format equal to the second payload The second payload size is the payload size of the DCI format with the smallest payload size in the twelfth DCI format and the fourteenth DCI format, if the payload size of the twelfth DCI format is larger than the second Payload size, determine the number of bits in the twelfth DCI format, truncated in the twelfth DCI format until the number of bits in the twelfth DCI format is equal to the second payload size; if the fourteenth DCI format is valid If the size of the payload is greater than the size of the second payload, the number of bits in the fourteenth DCI format is determined, and truncated in the fourteenth DCI format until the number of bits in the fourteenth DCI format is equal to the second payload size; The payload size of the eleventh DCI format is smaller than the second payload size, the number of bits of the eleventh DCI format is determined, and zero is filled in the eleventh DCI format until the number of bits of the eleventh DCI format is equal to the second Payload size; if the payload size of the eleventh DCI format is greater than the second payload size, determine the number of bits of the eleventh DCI format, and truncate the eleventh DCI format until the eleventh DCI format The number of bits is equal to the size of the second payload; if the payload size of the thirteenth DCI format is smaller than the size of the second payload, the number of bits of the thirteenth DCI format is determined, and zeros are filled in the thirteenth DCI format Until the number of bits of the thirteenth DCI format is equal to the size of the second payload; if the size of the payload of the thirteenth DCI format is greater than the size of the second payload, determine the number of bits of the thirteenth DCI format. In the thirteenth DCI format, the number of bits is truncated until the thirteenth DCI format is equal to the second payload size.

Optionally, at least one of the following methods is adopted to make the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format equal to the second payload The second payload size is the payload size of the DCI format with the largest payload size in the eleventh DCI format and the thirteenth DCI format, if the payload size of the eleventh DCI format is smaller than the second Payload size, determine the number of bits in the eleventh DCI format, fill in zeros in the eleventh DCI format until the number of bits in the eleventh DCI format is equal to the size of the second payload; if the number of bits in the thirteenth DCI format If the payload size is smaller than the second payload size, determine the number of bits in the thirteenth DCI format, and fill in zeros in the thirteenth DCI format until the number of bits in the thirteenth DCI format is equal to the second payload size; if The payload size of the twelfth DCI format is smaller than the second payload size, and zeros are filled in the twelfth DCI format until the number of bits in the twelfth DCI format is equal to the second payload size; The payload size of the DCI format is greater than the second payload size, and the number of bits in the twelfth DCI format is determined, and truncated in the twelfth DCI format until the number of bits in the twelfth DCI format is equal to the second payload size ; If the payload size of the fourteenth DCI format is smaller than the second payload size, determine the number of bits in the fourteenth DCI format, and fill in the fourteenth DCI format with zeros until the fourteenth DCI format bits The number is equal to the second payload size; if the payload size of the fourteenth DCI format is greater than the second payload size, determine the number of bits in the fourteenth DCI format, and truncate the fourteenth DCI format to the tenth The number of bits in the quad DCI format is equal to the size of the second payload.

Optionally, at least one of the following methods is adopted to make the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format equal to the second payload The second payload size is the payload size of the DCI format with the smallest payload size in the eleventh DCI format and the thirteenth DCI format, if the payload size of the eleventh DCI format is larger than the second Payload size, determine the number of bits of the eleventh DCI format, truncated in the eleventh DCI format until the number of bits of the eleventh DCI format is equal to the second payload size; if the thirteenth DCI format is valid If the size of the payload is greater than the size of the second payload, the number of bits in the thirteenth DCI format is determined, and truncated in the thirteenth DCI format until the number of bits in the thirteenth DCI format is equal to the size of the second payload; The payload size of the twelfth DCI format is smaller than the second payload size, and the number of bits in the twelfth DCI format is determined, and zero is filled in the twelfth DCI format until the number of bits in the twelfth DCI format is equal to the second Payload size; if the payload size of the twelfth DCI format is greater than the second payload size, determine the number of bits in the twelfth DCI format, and truncate it until the twelfth DCI format The number of bits is equal to the size of the second payload; if the payload size of the fourteenth DCI format is smaller than the size of the second payload, the number of bits of the fourteenth DCI format is determined, and zeros are filled in the fourteenth DCI format Until the number of bits of the fourteenth DCI format is equal to the size of the second payload; if the size of the payload of the fourteenth DCI format is greater than the size of the second payload, determine the number of bits of the fourteenth DCI format. The number of bits in the fourteenth DCI format is truncated until the fourteenth DCI format is equal to the second payload size.

At least one of the following methods is adopted to make the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format equal to the second payload size, and the first The second payload size is the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the DCI format with the largest payload size in the fourteenth DCI format. If the twelfth DCI format is The payload size of the DCI format is smaller than the second payload size, determine the bit number of the twelfth DCI format, and fill in zeros in the twelfth DCI format until the bit number of the twelfth DCI format is equal to the second payload Size; if the payload size of the fourteenth DCI format is smaller than the second payload size, determine the number of bits in the fourteenth DCI format, and fill in the fourteenth DCI format with zeros until the fourteenth DCI format bits The number of bits is equal to the size of the second payload; if the payload size of the eleventh DCI format is smaller than the size of the second payload, the number of bits of the eleventh DCI format is determined, and the eleventh DCI format is filled with zeros until The number of bits of the eleventh DCI format is equal to the size of the second payload; if the size of the payload of the thirteenth DCI format is smaller than the size of the second payload, the number of bits of the thirteenth DCI format is determined to be in the tenth The three DCI format is filled with zeros until the number of bits in the thirteenth DCI format is equal to the second payload size.

At least one of the following methods is adopted to make the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format equal to the second payload size, and the first 2. The payload size is the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the DCI format with the smallest payload size in the fourteenth DCI format, if the twelfth DCI format The payload size of the DCI format is greater than the second payload size, and the number of bits in the twelfth DCI format is determined, and truncated in the twelfth DCI format until the number of bits in the twelfth DCI format is equal to the second payload size ; If the size of the payload of the fourteenth DCI format is greater than the size of the second payload, determine the number of bits in the fourteenth DCI format, and truncate in the fourteenth DCI format until the number of bits in the fourteenth DCI format Equal to the second payload size; if the payload size of the eleventh DCI format is greater than the second payload size, determine the number of bits of the eleventh DCI format, and truncate the eleventh DCI format to the eleventh The number of bits in the DCI format is equal to the size of the second payload; if the payload size of the thirteenth DCI format is greater than the size of the second payload, the number of bits in the thirteenth DCI format is determined. Truncate until the number of bits in the thirteenth DCI format is equal to the second payload size.

Based on the above technical solution, the payload size of the DCI format in the common search space CSS corresponding to two TRPs or two CORESET groups is aligned, so that the two TRPs or two CORESET groups respectively correspond to the DCI format used for scheduling uplink transmission The payload size is aligned to the larger of the payload size of the DCI format of the two TRPs or the two CORESET groups for scheduling uplink transmission. That is, within one carrier, the enhanced DCI format and the basic DCI format in the common search space CSS have only one payload size of the DCI format.

Optionally, the payload size of the DCI format for scheduling uplink transmissions corresponding to the two TRPs or two CORESET groups can be aligned to the DCIs for scheduling uplink transmissions corresponding to the two TRPs or two CORESET groups. The smaller the payload size of the DCI format in the payload size of the format, for example:

At least one of the following methods is adopted to make the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format equal to the second payload size, and the first The second payload size is the payload size of the DCI format with the smallest payload size in the twelfth DCI format and the fourteenth DCI format, if the payload size of the twelfth DCI format is greater than the second payload size, Truncated in the twelfth DCI format until the number of bits in the twelfth DCI format is equal to the second payload size; if the payload size of the fourteenth DCI format is greater than the second payload size, the fourteenth Truncate in the DCI format until the number of bits in the fourteenth DCI format is equal to the second payload size; if the payload size of the eleventh DCI format is smaller than the second payload size, fill in zeros in the eleventh DCI format Until the number of bits in the eleventh DCI format is equal to the second payload size; if the payload size of the eleventh DCI format is greater than the second payload size, truncated in the eleventh DCI format; if the tenth 3. The payload size of the DCI format is smaller than the second payload size, and zero is filled in the thirteenth DCI format until the number of bits in the thirteenth DCI format is equal to the second payload size; if the thirteenth DCI format is The payload size is greater than the second payload size, and truncated in the thirteenth DCI format until the number of bits in the thirteenth DCI format is equal to the second payload size.

It should also be understood that when the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format is set to be the same, there is no need to perform the aforementioned Lacy eleven DCI format Steps of the payload size of the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format.

With reference to the first aspect, in some implementations of the first aspect, the first DCI format includes the eleventh DCI format and the twelfth DCI format configured in the search space CSS common to the cell, and the second DCI format Includes the thirteenth DCI format and the fourteenth DCI format configured in the CSS, where the eleventh DCI format and the thirteenth DCI format are used for scheduling uplink transmission, and the twelfth DCI format and the Fourteen DCI format is used for scheduling downlink transmission;

At least one of the following methods is adopted so that the payload size of the twelfth DCI format is equal to the payload size of the eleventh DCI format, and the payload size of the thirteenth DCI format is equal to that of the fourteenth DCI format. Payload size: when the payload size of the eleventh DCI format is greater than the payload size of the twelfth DCI format, truncated in the eleventh DCI format until the number of bits in the eleventh DCI format is equal to the twelfth The number of bits in the DCI format; when the payload size of the eleventh DCI format is smaller than the payload size of the twelfth DCI format, fill in zeros in the eleventh DCI format until the number of bits in the eleventh DCI format It is equal to the number of bits in the twelfth DCI format; when the payload size of the thirteenth DCI format is greater than the payload size of the fourteenth DCI format, truncated in the thirteenth DCI format to the thirteenth DCI format The number of bits is equal to the number of bits in the fourteenth DCI format; when the payload size of the thirteenth DCI format is smaller than the payload size of the fourteenth DCI format, fill in zeros in the thirteenth DCI format until the tenth The number of bits in the three DCI format is equal to the number of bits in the fourteenth DCI format.

Based on the above technical solution, align the payload size of the DCI format in the common search space CSS corresponding to two TRPs or two CORESET groups respectively, and align the DCIs for scheduling uplink transmissions corresponding to the two TRPs or two CORESET groups respectively. The payload size of the format and the payload size of the DCI format used for scheduling uplink transmission. That is, for two TRPs or two CORESET groups in the common search space CSS, two DCI format payload sizes will be obtained.

With reference to the first aspect, in some implementations of the first aspect, after determining that the number of DCI formats with different payload sizes is greater than or equal to a preset threshold, the method further includes at least one of the following ways: based on the first configuration The initial BWP configuration included in the information or the CORESET configuration with the smallest index in the CORESET group included in the first configuration information determines the payload size of the seventh DCI format and the payload size of the eighth DCI format; based on the second configuration information included The initial BWP configuration or the CORESET configuration with the smallest index in the CORESET group included in the second configuration information determines the payload size of the ninth DCI format and the payload size of the tenth DCI format;

Optionally, the total number of DCI formats of different payload sizes does not exceed the first preset threshold.

Optionally, the total number of DCI formats of different payload sizes in the USS does not exceed the second preset threshold.

The following manner is adopted to make the payload size of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format equal to the third payload size, and the third payload size is the eighth DCI Format and the payload size of the DCI format with the largest payload size in the tenth DCI format. If the payload size of the eighth DCI format is smaller than the third payload size, determine the number of bits in the eighth DCI format. Fill in zeros in the eighth DCI format until the number of bits in the eighth DCI format is equal to the third payload size; if the payload size of the tenth DCI format is smaller than the third payload size, determine the bit number of the tenth DCI format , Fill in zeros in the tenth DCI format until the number of bits in the tenth DCI format is equal to the third payload size; if the payload size of the seventh DCI format is smaller than the third payload size, determine the size of the seventh DCI format The number of bits in the seventh DCI format is filled with zeros until the number of bits in the seventh DCI format is equal to the third payload size; if the payload size of the seventh DCI format is greater than the third payload size, determine the seventh The number of bits in the DCI format is truncated in the seventh DCI format until the number of bits in the seventh DCI format is equal to the third payload size; if the payload size of the ninth DCI format is smaller than the third payload size, determine The number of bits of the ninth DCI format, fill in the ninth DCI format until the number of bits of the ninth DCI format is equal to the third payload size; if the payload size of the ninth DCI format is greater than the third payload size Size, determine the number of bits of the ninth DCI format, truncated in the ninth DCI format until the number of bits of the ninth DCI format is equal to the third payload size.

Optionally, the following manner is adopted so that the payload size of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format is equal to the third payload size, and the third payload size is The payload size of the DCI format with the smallest payload size in the eighth DCI format and the tenth DCI format, if the payload size of the eighth DCI format is greater than the third payload size, determine the bit position of the eighth DCI format The number of bits in the eighth DCI format is truncated until the number of bits in the eighth DCI format is equal to the third payload size; if the payload size of the tenth DCI format is greater than the third payload size, the tenth DCI format is determined Number of bits, truncated in the tenth DCI format until the number of bits in the tenth DCI format is equal to the third payload size; if the payload size of the seventh DCI format is smaller than the third payload size, determine the seventh DCI The number of bits in the format. Fill in the seventh DCI format with zeros until the number of bits in the seventh DCI format is equal to the third payload size; if the payload size of the seventh DCI format is greater than the third payload size, confirm The number of bits in the seventh DCI format is truncated in the seventh DCI format until the number of bits in the seventh DCI format is equal to the third payload size; if the payload size of the ninth DCI format is smaller than the third payload size , Determine the number of bits in the ninth DCI format, fill in zeros in the ninth DCI format until the number of bits in the ninth DCI format is equal to the third payload size; if the payload size of the ninth DCI format is greater than the third The payload size is to determine the number of bits in the ninth DCI format, and truncated in the ninth DCI format until the number of bits in the ninth DCI format is equal to the third payload size.

Optionally, the following manner is adopted so that the payload size of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format is equal to the third payload size, and the third payload size is The payload size of the DCI format with the largest payload size in the seventh DCI format and the ninth DCI format, if the payload size of the seventh DCI format is smaller than the third payload size, determine the bits of the seventh DCI format Number, fill in zeros in the seventh DCI format until the number of bits in the eighth DCI format is equal to the third payload size; if the payload size of the ninth DCI format is smaller than the third payload size, determine the ninth DCI format The number of bits in the ninth DCI format is filled with zeros until the number of bits in the tenth DCI format is equal to the third payload size; if the payload size of the eighth DCI format is smaller than the third payload size, determine the first The number of bits in the eighth DCI format. Fill in the eighth DCI format with zeros until the number of bits in the eighth DCI format is equal to the third payload size; if the payload size of the eighth DCI format is greater than the third payload size , Determine the number of bits in the eighth DCI format, and truncate in the eighth DCI format until the number of bits in the eighth DCI format is equal to the third payload size; if the payload size of the tenth DCI format is smaller than the third effective The payload size is to determine the number of bits in the tenth DCI format, and fill in the tenth DCI format until the number of bits in the tenth DCI format is equal to the third payload size; if the payload size of the tenth DCI format is greater than the The third payload size determines the number of bits in the tenth DCI format, and truncates in the tenth DCI format until the number of bits in the tenth DCI format is equal to the third payload size.

Optionally, the following manner is adopted so that the payload size of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format is equal to the third payload size, and the third payload size is The payload size of the DCI format with the smallest payload size in the seventh DCI format and the ninth DCI format, and if the payload size of the seventh DCI format is larger than the third payload size, determine the bits of the seventh DCI format The number of bits in the seventh DCI format is truncated until the number of bits in the eighth DCI format is equal to the third payload size; if the payload size of the ninth DCI format is greater than the third payload size, the ninth DCI format is determined The number of bits, truncated in the ninth DCI format until the number of bits in the tenth DCI format is equal to the third payload size; if the payload size of the eighth DCI format is smaller than the third payload size, determine the eighth DCI The number of bits in the format. Fill in the eighth DCI format with zeros until the number of bits in the eighth DCI format is equal to the third payload size; if the payload size of the eighth DCI format is greater than the third payload size, confirm The number of bits in the eighth DCI format is truncated in the eighth DCI format until the number of bits in the eighth DCI format is equal to the third payload size; if the payload size of the tenth DCI format is smaller than the third payload size , Determine the number of bits in the tenth DCI format, fill in zeros in the tenth DCI format until the number of bits in the tenth DCI format is equal to the third payload size; if the payload size of the tenth DCI format is greater than the third The payload size determines the number of bits in the tenth DCI format, and truncates in the tenth DCI format until the number of bits in the tenth DCI format is equal to the third payload size.

Optionally, the following manner is adopted so that the payload size of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format is equal to the third payload size, and the third payload size is The seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format have the largest payload size of the DCI format. If the payload size of the seventh DCI format is larger than the third Payload size, determine the number of bits in the seventh DCI format, fill in the seventh DCI format until the number of bits in the eighth DCI format is equal to the third payload size; if the payload size of the ninth DCI format is greater than The third payload size determines the number of bits in the ninth DCI format, and fills in the ninth DCI format until the number of bits in the tenth DCI format is equal to the third payload size; if the eighth DCI format is valid If the payload size is smaller than the third payload size, determine the number of bits in the eighth DCI format, and fill in zeros in the eighth DCI format until the number of bits in the eighth DCI format is equal to the third payload size; if the tenth DCI The payload size of the format is smaller than the third payload size, and the number of bits in the tenth DCI format is determined, and zero is filled in the tenth DCI format until the number of bits in the tenth DCI format is equal to the third payload size.

Optionally, the following manner is adopted so that the payload size of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format is equal to the third payload size, and the third payload size is The payload size of the DCI format with the smallest payload size among the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format, if the payload size of the seventh DCI format is larger than the third Payload size, determine the number of bits in the seventh DCI format, truncated in the seventh DCI format until the number of bits in the eighth DCI format is equal to the third payload size; if the payload size of the ninth DCI format is greater than the The third payload size determines the number of bits in the ninth DCI format, truncated in the ninth DCI format until the number of bits in the tenth DCI format is equal to the third payload size; if the payload size of the eighth DCI format Is greater than the third payload size, determine the number of bits in the eighth DCI format, truncated in the eighth DCI format until the number of bits in the eighth DCI format is equal to the third payload size; if the tenth DCI format is valid If the payload size is greater than the third payload size, the number of bits in the tenth DCI format is determined, and the tenth DCI format is truncated until the number of bits in the tenth DCI format is equal to the third payload size.

It should be understood that the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format are the payloads of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format. The DCI format before the same size operation.

Optionally, the payload sizes of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format are the payload sizes after the zero-filling or truncation operations described above, and the operations after determining the threshold are based on the foregoing The bits after the zero-filling operation are executed.

Optionally, the payload size of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format are determined according to the corresponding configuration information, and the operation after the threshold is determined based on the bits determined by the configuration information implemented.

Based on the above technical solution, when the number of DCI formats with different payload sizes does not meet the preset conditions, the basic USS for scheduling uplink transmission is determined based on the method of determining the payload size of the DCI format for scheduling uplink transmission in the CSS The payload size of the DCI format is similarly determined based on the method of determining the payload size of the DCI format for scheduling downlink transmission in the CSS to determine the basic payload size of the USS for scheduling the downlink transmission DCI format, and then perform the alignment of the different USS The specific alignment method of the payload size of the DCI format is similar to the above-mentioned method of aligning the payload size of the different DCI formats in the USS: first align the payload size of the DCI format for scheduling downlink transmission, and then it will be used for scheduling the uplink transmission The payload size of the format is aligned to the payload size of the DCI format used for scheduling downlink transmission.

It should be understood that when one or more of the above-mentioned third DCI format, the fourth DCI format, the fifth DCI format, and the sixth DCI format are filled with one or more of the DCI formats, it is determined that different payloads After the number of DCI formats of the size is greater than or equal to the preset threshold, perform the above-mentioned aligning the payload sizes of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format to the third effective Before the payload size, one bit 0 filled in the third DCI format, the fourth DCI format, the fifth DCI format, or the sixth DCI format needs to be removed.

Optionally, the payload size of the third DCI format, the fourth DCI format, the fifth DCI format, and the sixth DCI format is the payload size after the zero-filling or truncation operation, and the operation after the threshold is determined based on the foregoing The bits after the zero-filling operation are executed.

Optionally, the payload size of the third DCI format, the fourth DCI format, the fifth DCI format, and the sixth DCI format are determined according to the corresponding configuration information, and the operation after the threshold is determined based on the bits determined by the configuration information implemented.

It should be understood that when the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format is equal to the second payload size, the aforementioned third payload size is The aforementioned second payload size;

When the payload size of the twelfth DCI format and the eleventh DCI format are the same, and the payload size of the thirteenth DCI format and the fourteenth DCI format are the same, the aforementioned third payload size is the tenth 2. The payload size of the DCI format or the eleventh DCI format, or the third payload size mentioned above is the payload size of the thirteenth DCI format or the fourteenth DCI format.

Optionally, the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format is the payload size after the zero-filling or truncation operation described above, after the judgment threshold The operation is performed based on the bits after the above zero-filling operation.

Optionally, the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format are determined according to the corresponding configuration information, and the operation after the threshold is determined based on the configuration information Certain bits are executed.

With reference to the first aspect, in some implementations of the first aspect, after judging that the number of DCI formats with different payload sizes is greater than or equal to a preset threshold, the following methods are used to make the seventh DCI format and the ninth DCI format The payload size of the eighth DCI format and the tenth DCI format is equal to the second payload size:

The seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format are respectively truncated or filled with zeros.

Based on the above technical solution, when the number of DCI formats with different payload sizes does not meet the preset conditions, and the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format and the fourteenth DCI format When the payload size is equal to the second payload size, the basic payload size used for scheduling the uplink transmission DCI format in the USS is aligned to the payload size used for scheduling the uplink DCI format in the CSS.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: after judging that the number of DCI formats with different payload sizes is greater than or equal to a preset threshold, at least one of the following methods is adopted to make the The payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format is equal to the second payload size: based on the initial BWP configuration included in the first configuration information or the first configuration The CORESET configuration with the smallest index in the CORESET group included in the information determines the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format; or, based on the payload size included in the second configuration information The initial BWP configuration or the CORESET configuration with the smallest index in the CORESET group included in the second configuration information determines the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format.

It should be understood that the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format are implemented to make the seventh, eighth, ninth, and tenth DCI format valid. The DCI format before the same payload size.

Based on the above technical solution, when the number of DCI formats with different payload sizes does not meet the preset conditions, and the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format and the fourteenth DCI format When the payload size is equal to the second payload size, the payload sizes of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format are determined based on the method of determining the second payload size, so that The payload size of the different DCI formats in the USS is the same as the payload size of the different DCI formats in the CSS.

When the foregoing second payload size is the payload size of the twelfth DCI format, based on the initial BWP configuration included in the first configuration information or the CORESET configuration with the smallest index in the CORESET group included in the first configuration information Determining the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format;

When the foregoing second payload size is the payload size of the fourteenth DCI format, based on the initial BWP configuration included in the second configuration information or the CORESET configuration with the smallest index in the CORESET group included in the second configuration information Determine the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format.

Combined with the first aspect, in some implementations of the first aspect,

The third DCI format is the DCI format format 1_1 configured in the USS indicated by the first configuration information;

The fourth DCI format is the DCI format format 0_1 configured in the USS indicated by the first configuration information;

The fifth DCI format is the DCI format format 1_1 configured in the USS indicated by the second configuration information;

The sixth DCI format is the DCI format format 0_1 configured in the USS indicated by the second configuration information;

The seventh DCI format is the DCI format format 0_0 configured in the USS indicated by the first configuration information;

The eighth DCI format is the DCI format format 1_0 configured in the USS indicated by the first configuration information;

The ninth DCI format is the DCI format format 0_0 configured in the USS indicated by the second configuration information;

The tenth DCI format is the DCI format format 1_0 configured in the USS indicated by the second configuration information;

The eleventh DCI format is the DCI format format 0_0 configured in the CSS indicated by the first configuration information;

The twelfth DCI format is the DCI format format 1_0 configured in the CSS indicated by the first configuration information;

The thirteenth DCI format is the DCI format format 0_0 configured in the CSS indicated by the second configuration information;

The fourteenth DCI format is the DCI format format 1_0 configured in the CSS indicated by the second configuration information.

With reference to the first aspect, in some implementation manners of the first aspect, the terminal device receives the above-mentioned one or more zero-filled or truncated DCI formats.

In the second aspect, a method for sending downlink control information DCI is provided. The method for sending downlink control information DCI may be executed by a network device, or may also be executed by a chip or circuit provided in the network device. Not limited.

The method for sending downlink control information DCI includes:

Send first configuration information, the first configuration information is used to determine the payload size of the first DCI format; send second configuration information, the second configuration information is used to determine the payload size of the second DCI format; wherein, the first The first configuration information and the second configuration information respectively correspond to two different control resource sets CORESET groups; at least one of the following methods is used to make the payload size of the first DCI format and the payload size of the second DCI format Same: When the payload size of the first DCI format is smaller than the payload size of the second DCI format, determine the number of bits in the first DCI format and the second DCI format, and fill in the first DCI format with zeros until the first The number of bits in the DCI format is equal to the number of bits in the second DCI format; when the payload size of the first DCI format is greater than the payload size of the second DCI format, determine the bits of the first DCI format and the second DCI format Number, fill in the second DCI format with zeros until the number of bits in the second DCI format is equal to the number of bits in the first DCI format; when the payload size of the first DCI format is smaller than the payload size of the second DCI format , Determine the number of bits in the first DCI format and the second DCI format, and truncate in the second DCI format until the number of bits in the second DCI format is equal to the number of bits in the first DCI format; when the number of bits in the first DCI format The payload size is greater than the payload size of the second DCI format, the number of bits in the first DCI format and the second DCI format is determined, and the first DCI format is truncated until the number of bits in the first DCI format is equal to the second DCI The number of bits in the format.

In the method for sending downlink control information DCI provided by the embodiment of the present application, the network device sends the first configuration information and the second configuration information corresponding to different control resource sets CORESET groups. Specifically, the network device respectively determines the validity of the first DCI format The payload size and the payload size of the second DCI format are filled with zeros or truncated so that the payload size of the first DCI format and the payload size of the second DCI format are the same, thereby aligning the data issued by different transmission points The payload size of the DCI format can reduce the complexity of blind DCI detection by terminal equipment in the CoMP scenario.

With reference to the second aspect, in some implementations of the second aspect, the first DCI format includes a third DCI format and a fourth DCI format configured in the user-specific search space USS, and the second DCI format includes configuration The fifth DCI format and the sixth DCI format in the USS, where the third DCI format and the fifth DCI format are used for scheduling downlink transmission, and the fourth DCI format and the sixth DCI format are used for scheduling uplink transmission ; At least one of the following methods is adopted to make the payload size of the third DCI format the same as the payload size of the fifth DCI format: when the payload size of the third DCI format is greater than the effective payload of the fifth DCI format The payload size determines the number of bits in the third DCI format and the fifth DCI format. Fill in the fifth DCI format with zeros until the number of bits in the fifth DCI format is equal to the number of bits in the third DCI format; when the third The payload size of the DCI format is smaller than the payload size of the fifth DCI format, and the number of bits in the third DCI format and the fifth DCI format is determined, and zero is filled in the third DCI format until the number of bits in the third DCI format It is equal to the number of bits in the fifth DCI format; at least one of the following methods is used to make the payload size of the fourth DCI format the same as the payload size of the sixth DCI format: when the payload of the fourth DCI format The size is greater than the payload size of the sixth DCI format, determine the bit number of the fourth DCI format and the sixth DCI format, and fill in the sixth DCI format with zeros until the bit number of the sixth DCI format is equal to the fourth DCI format When the payload size of the fourth DCI format is smaller than the payload size of the sixth DCI format, determine the number of bits of the fourth DCI format and the sixth DCI format, and fill in the fourth DCI format with zeros Until the number of bits in the fourth DCI format is equal to the number of bits in the sixth DCI format.

With reference to the second aspect, in some implementations of the second aspect, the first DCI format includes a third DCI format and a fourth DCI format configured in the user-specific search space USS, and the second DCI format includes The fifth DCI format and the sixth DCI format configured in the USS, where the third DCI format and the fifth DCI format are used for scheduling downlink transmission, and the fourth DCI format and the sixth DCI format are used for scheduling uplink Transmission; at least one of the following methods is used to make the payload size of the third DCI format the same as the payload size of the fourth DCI format, the payload size of the fifth DCI format and the validity of the sixth DCI format The payload size is the same: when the payload size of the third DCI format is greater than the payload size of the fourth DCI format, determine the number of bits in the third DCI format and the fourth DCI format, and fill in the fourth DCI format with zeros until The number of bits in the fourth DCI format is equal to the number of bits in the third DCI format; when the payload size of the third DCI format is smaller than the payload size of the fourth DCI format, determine whether the third DCI format and the fourth DCI format are The number of bits in the third DCI format is filled with zeros until the number of bits in the third DCI format is equal to the number of bits in the fourth DCI format; when the payload size of the fifth DCI format is greater than the validity of the sixth DCI format Payload size, determine the number of bits in the fifth DCI format and the sixth DCI format, fill in the sixth DCI format until the number of bits in the sixth DCI format is equal to the number of bits in the fifth DCI format; when the fifth The payload size of the DCI format is smaller than the payload size of the sixth DCI format, determine the number of bits in the fifth DCI format and the sixth DCI format, and fill in the fifth DCI format with zeros until the number of bits in the fifth DCI format Equal to the number of bits in the sixth DCI format.

With reference to the second aspect, in some implementations of the second aspect, the first DCI format further includes a seventh DCI format and an eighth DCI format configured in the USS, and the second DCI format further includes The ninth DCI format and the tenth DCI format in the USS, where the payload size of the seventh DCI format and the ninth DCI format is determined according to the currently activated uplink BWP size and used for scheduling uplink transmission; the eighth DCI The format and the payload size of the tenth DCI format are equal to the first payload size, which is determined according to the currently activated downlink BWP size and used for scheduling downlink transmission; the network device uses at least one of the following methods to make the seventh DCI The format and the payload size of the ninth DCI format are equal to the first payload size: when the payload size of the seventh DCI format is greater than the first payload size, determine the number of bits of the seventh DCI format, and the 7. Truncated in the DCI format until the number of bits in the seventh DCI format is equal to the size of the first payload; when the payload size of the seventh DCI format is smaller than the size of the first payload, determine the number of bits in the seventh DCI format. Fill in the seventh DCI format with zeros until the number of bits in the seventh DCI format is equal to the first payload size; when the payload size of the ninth DCI format is greater than the first payload size, determine the bits of the ninth DCI format The number of bits in the ninth DCI format is truncated until the number of bits in the ninth DCI format is equal to the first payload size; when the payload size of the ninth DCI format is smaller than the first payload size, the ninth DCI format is determined The number of bits is filled with zeros in the ninth DCI format until the number of bits in the ninth DCI format is equal to the size of the first payload.

Based on the foregoing technical solution, the foregoing first DCI format includes the seventh DCI format and the eighth DCI format configured in the user-specific search space USS, and the second DCI format includes the ninth DCI format and the eighth DCI format configured in the user-specific search space USS. In the case of the tenth DCI format, the payload size of the seventh DCI format and the ninth DCI format is only determined according to the currently activated uplink BWP size and used for scheduling uplink transmission. The eighth DCI format and the tenth DCI format The payload size is equal to the first payload size, which is determined according to the currently activated downlink BWP size and is used for scheduling downlink transmission. It can align the payload size of the seventh DCI format with the payload size of the eighth DCI format, and align the ninth DCI The payload size of the format and the payload size of the tenth DCI format are respectively aligned with the DCI format used for scheduling downlink transmission and the DCI format used for scheduling uplink transmission in the DCI formats issued by different transmission points, and when When the payload size of the eighth DCI format and the tenth DCI format is only determined according to the currently activated downlink BWP size, the payload size of the eighth DCI format and the tenth DCI format can be the same by default, so as to align the user-specific search space The payload size of the DCI format issued by different transmission points in the USS can reduce the complexity of the blind detection of the DCI by the terminal equipment in the CoMP scenario.

With reference to the second aspect, in some implementations of the second aspect, the payload size of the third DCI format is made the same as the payload size of the fifth DCI format, and/or the fourth DCI format is made effective After the payload size is the same as the payload size of the sixth DCI format, or after making the payload size of the third DCI format the same as the payload size of the fourth DCI format, and/or, making the fifth DCI format After the payload size of the sixth DCI format is the same as the payload size of the sixth DCI format, the method further includes: when the third DCI format, the fourth DCI format, the fifth DCI format, and any of the sixth DCI format When the payload size of is equal to the first payload size, a zero is filled in the DCI grid.

For example, compare the payload size of the basic DCI format used for scheduling downlink transmission in the USS (the eighth DCI format, the tenth DCI format) and the enhanced payload size of the DCI format used for scheduling downlink transmission ( The third DCI format, the fifth DCI format), when the payload size of the enhanced DCI format used for scheduling downlink transmission is equal to the basic payload size of the DCI format used for scheduling uplink transmission, Fill a bit 0 in the DCI format for scheduling downlink transmission; similarly, compare the basic payload size of the DCI format used for scheduling uplink transmission in the USS (the seventh DCI format and the ninth DCI format) and the enhanced, The payload size of the DCI format used for scheduling uplink transmission (the fourth DCI format, the sixth DCI format), when the enhanced payload size of the DCI format used for scheduling downlink transmission is equal to the basic one used for scheduling uplink When transmitting the payload size of the DCI format, fill a bit 0 in the basic DCI format used for scheduling uplink transmission.

With reference to the second aspect, in some implementations of the second aspect, the first DCI format includes an eleventh DCI format and a twelfth DCI format configured in the search space CSS common to the cell, and the second DCI format Includes the thirteenth DCI format and the fourteenth DCI format configured in the CSS, where the eleventh DCI format and the thirteenth DCI format are used for scheduling uplink transmission, and the twelfth DCI format and the tenth DCI format Four DCI format is used for scheduling downlink transmission;

Based on the above technical solution, the payload size of the DCI format in the common search space CSS corresponding to two TRPs or two CORESET groups is aligned, so that the two TRPs or two CORESET groups respectively correspond to the DCI format used for scheduling uplink transmission The payload size is aligned to the larger of the payload size of the DCI format of the two TRPs or the two CORESET groups for scheduling uplink transmission. That is, for two TRPs or two CORESET groups in the common search space CSS, a DCI format payload size will be obtained.

At least one of the following methods is adopted to make the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format equal to the second payload size, and the first The second payload size is the payload size of the DCI format with the smallest payload size in the twelfth DCI format and the fourteenth DCI format, if the payload size of the twelfth DCI format is greater than the second payload size, Determine the number of bits in the twelfth DCI format, and truncate in the twelfth DCI format until the number of bits in the twelfth DCI format is equal to the second payload size; if the payload size of the fourteenth DCI format is greater than the The second payload size determines the number of bits in the fourteenth DCI format, truncated in the fourteenth DCI format until the number of bits in the fourteenth DCI format is equal to the second payload size; if the eleventh DCI format The payload size of is smaller than the second payload size, the number of bits of the eleventh DCI format is determined, and zero is filled in the eleventh DCI format until the number of bits of the eleventh DCI format is equal to the second payload size; If the payload size of the eleventh DCI format is greater than the second payload size, determine the number of bits in the eleventh DCI format, and truncate in the eleventh DCI format until the number of bits in the eleventh DCI format is equal to The second payload size; if the payload size of the thirteenth DCI format is smaller than the second payload size, determine the number of bits of the thirteenth DCI format, and fill in zeros in the thirteenth DCI format until the thirteenth The number of bits in the DCI format is equal to the size of the second payload; if the payload size of the thirteenth DCI format is greater than the size of the second payload, the number of bits in the thirteenth DCI format is determined. Truncate until the number of bits in the thirteenth DCI format is equal to the second payload size.

With reference to the second aspect, in some implementations of the second aspect, the first DCI format includes an eleventh DCI format and a twelfth DCI format configured in the search space CSS common to the cell, and the second DCI format Includes the thirteenth DCI format and the fourteenth DCI format configured in the CSS, where the eleventh DCI format and the thirteenth DCI format are used for scheduling uplink transmission, and the twelfth DCI format and the Fourteen DCI format is used for scheduling downlink transmission;

With reference to the second aspect, in some implementations of the second aspect, after determining that the number of DCI formats with different payload sizes is greater than or equal to a preset threshold, the method further includes at least one of the following ways: based on the first configuration The initial BWP configuration included in the information or the CORESET configuration with the smallest index in the CORESET group included in the first configuration information determines the payload size of the seventh DCI format and the payload size of the eighth DCI format; based on the second configuration information included The initial BWP configuration or the CORESET configuration with the smallest index in the CORESET group included in the second configuration information determines the payload size of the ninth DCI format and the payload size of the tenth DCI format;

Based on the above technical solution, when the number of DCI formats with different payload sizes does not meet the preset conditions, the basic USS for scheduling uplink transmission is determined based on the method of determining the payload size of the DCI format for scheduling uplink transmission in the CSS The payload size of the DCI format is similarly determined based on the method of determining the payload size of the DCI format for scheduling downlink transmission in the CSS to determine the basic payload size of the USS for scheduling the downlink transmission DCI format, and then perform the alignment of the different USS The specific alignment method of the payload size of the DCI format is similar to the above-mentioned method of aligning the payload size of the different DCI formats in the USS: first align the payload size of the DCI format used for scheduling downlink transmission, and then it will be used for scheduling the uplink transmission DCI The payload size of the format is aligned to the payload size of the DCI format used for scheduling downlink transmission.

With reference to the second aspect, in some implementations of the second aspect, after judging that the number of DCI formats with different payload sizes is greater than or equal to a preset threshold, the following methods are used to make the seventh DCI format and the ninth DCI format The payload size of the eighth DCI format and the tenth DCI format is equal to the second payload size:

With reference to the second aspect, in some implementations of the second aspect, the method further includes: after judging that the number of DCI formats with different payload sizes is greater than or equal to a preset threshold, at least one of the following methods is adopted to make the The payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format is equal to the second payload size: based on the initial BWP configuration included in the first configuration information or the first configuration The CORESET configuration with the smallest index in the CORESET included in the information determines the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format; or, based on the initial configuration information included in the second configuration information. The BWP configuration or the CORESET configuration with the smallest index in the CORESET included in the second configuration information determines the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format.

With reference to the second aspect, in some implementations of the second aspect, the third DCI format is the DCI format format 1_1 configured in the USS indicated by the first configuration information;

With reference to the second aspect, in some implementation manners of the second aspect, the network device transmits one or more of the above-mentioned DCI formats that are filled with 0 or truncated.

In a third aspect, an apparatus for receiving downlink control information DCI is provided. The apparatus for receiving downlink control information DCI includes a processor for implementing the function of the terminal device in the method described in the first aspect.

Optionally, the apparatus for receiving downlink control information DCI may further include a memory, the memory is coupled to the processor, and the processor is configured to implement the function of the terminal device in the method described in the first aspect. In a possible implementation, the memory is used to store program instructions and data. The memory is coupled with the processor, and the processor can call and execute program instructions stored in the memory to implement the functions of the terminal device in the method described in the first aspect.

Optionally, the apparatus for receiving downlink control information DCI may further include a communication interface, and the communication interface is used for the apparatus for receiving downlink control information DCI to communicate with other devices. When the device for receiving the downlink control information DCI is a terminal device, the communication interface is a transceiver, an input/output interface, or a circuit.

In a possible design, the device for transmitting downlink control information DCI includes a processor and a communication interface,

The processor is configured to run a computer program, so that the device for transmitting downlink control information DCI implements any of the methods described in the first aspect;

The processor uses the communication interface to communicate with the outside.

It can be understood that the external may be an object other than the processor, or an object other than the device.

In another possible design, the device for receiving downlink control information DCI is a chip or a chip system. The communication interface may be an input/output interface, interface circuit, output circuit, input circuit, and pin on the chip or chip system. Or related circuits, etc. The processor may also be embodied as a processing circuit or a logic circuit.

In a fourth aspect, an apparatus for sending downlink control information DCI is provided. The apparatus for sending downlink control information DCI includes a processor for implementing the function of the network device in the method described in the second aspect.

Optionally, the apparatus for sending downlink control information DCI may further include a memory, the memory is coupled to the processor, and the processor is configured to implement the function of the network device in the method described in the second aspect. In a possible implementation, the memory is used to store program instructions and data. The memory is coupled with the processor, and the processor can call and execute the program instructions stored in the memory to implement the function of the network device in the method described in the second aspect. Optionally, the apparatus for sending downlink control information DCI may further include a communication interface, and the communication interface is used for the apparatus for sending downlink control information DCI to communicate with other devices. When the device for sending the downlink control information DCI is a network device, the communication interface is a transceiver, an input/output interface, or a circuit.

In a possible design, the device for sending downlink control information DCI includes a processor and a communication interface,

The processor communicates with the outside by using the communication interface;

The processor is configured to run a computer program, so that the device for sending downlink control information DCI implements any of the methods described in the second aspect.

In another possible design, the device chip or chip system for sending downlink control information DCI. The communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or chip system. The processor may also be embodied as a processing circuit or a logic circuit.

In a fifth aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a communication device, the communication device realizes the first aspect and any possible implementation manner of the first aspect Method in.

In a sixth aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a communication device, the communication device realizes the second aspect and any possible implementation manner of the second aspect Method in.

In a seventh aspect, a computer program product containing instructions is provided, when the instructions are executed by a computer, the communication device realizes the first aspect and the method in any possible implementation manner of the first aspect.

An eighth aspect provides a computer program product containing instructions, which when executed by a computer, cause a communication device to implement the second aspect and the method in any possible implementation manner of the second aspect.

In a ninth aspect, a communication system is provided, including the apparatus for receiving downlink control information DCI shown in the third aspect and the apparatus for sending downlink control information DCI shown in the fourth aspect.

Description of the drawings

FIG. 1 is a schematic diagram of a system 100 capable of applying the method for receiving DCI and the method for sending DCI provided by the embodiments of the present application.

Figure 2 is a schematic diagram of a CORESET configuration provided by an embodiment of the present application.

FIG. 3 is a schematic flowchart of a method for receiving DCI and a method for sending DCI according to an embodiment of the present application.

FIG. 4 is a schematic flowchart of another method for receiving DCI and a method for sending DCI according to an embodiment of the present application.

FIG. 5 is a schematic diagram of a device 50 for receiving DCI proposed in this application.

FIG. 6 is a schematic structural diagram of a terminal device 60 applicable to an embodiment of the present application.

FIG. 7 is a schematic diagram of a device 70 for sending DCI proposed in this application.

FIG. 8 is a schematic structural diagram of a network device 80 applicable to an embodiment of the present application.

detailed description

The technical solution in this application will be described below in conjunction with the drawings.

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division duplex) , TDD) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, the future 5th generation (5G) system or new wireless (new radio, NR), etc., the 5G mobile communication system described in this application includes a non-standalone (NSA) 5G mobile communication system or a standalone (SA) 5G mobile communication system. The technical solution provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system. The communication system can also be a public land mobile communication network (Public Land Mobile Network, PLMN) network, a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, and a device-to-device (D2D) communication system. Internet of Things (IoT) communication system or other communication systems.

The terminal equipment (user equipment, UE) in the embodiments of the present application may refer to an access terminal, a user unit, a user station, a mobile station, a mobile station, a relay station, a remote station, a remote terminal, a mobile device, a user terminal, Terminal equipment (terminal equipment), terminal (terminal), wireless communication equipment, user agent or user device. The terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), and a wireless communication Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network or future evolution of the public land mobile network (PLMN) The terminal device or the terminal device in the future Internet of Vehicles, etc., are not limited in the embodiment of the present application.

As an example and not a limitation, in the embodiments of this application, wearable devices can also be referred to as wearable smart devices. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, Gloves, watches, clothing and shoes, etc. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as various smart bracelets and smart jewelry for physical sign monitoring.

In addition, in the embodiments of the present application, the terminal device can also be a terminal device in the IoT system. IoT is an important part of the development of information technology in the future. Its main technical feature is to connect objects to the network through communication technology to realize man-machine Interconnection, an intelligent network of interconnection of things. In the embodiments of the present application, the IOT technology can achieve massive connections, deep coverage, and power saving of the terminal through, for example, narrowband (NB) technology.

In addition, in the embodiments of this application, the terminal equipment may also include sensors such as smart printers, train detectors, gas stations, etc. The main functions include collecting data (part of the terminal equipment), receiving control information and downlink data from network equipment, and sending electromagnetic waves. , To transmit uplink data to network equipment.

The network device in the embodiment of the present application may be any communication device with wireless transceiving function used to communicate with terminal devices. This equipment includes but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC) , Base transceiver station (base transceiver station, BTS), home base station (home evolved NodeB, HeNB, or home Node B, HNB), baseband unit (baseband unit, BBU), wireless fidelity (wireless fidelity, WIFI) system Access point (AP), wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP), etc., can also be 5G, such as NR , The gNB in the system, or the transmission point (TRP or TP), one or a group of antenna panels (including multiple antenna panels) of the base station in the 5G system, or the network node that constitutes the gNB or transmission point, Such as baseband unit (BBU), or distributed unit (DU), etc.

In some deployments, the gNB may include a centralized unit (CU) and a DU. The gNB may also include an active antenna unit (AAU). CU implements part of the functions of gNB, and DU implements part of the functions of gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implements radio resource control (radio resource control, RRC), packet data convergence protocol (packet data convergence protocol, PDCP) layer functions. The DU is responsible for processing physical layer protocols and real-time services, and realizes the functions of the radio link control (RLC) layer, media access control (MAC) layer, and physical (PHY) layer. AAU realizes some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by DU , Or, sent by DU+AAU. It can be understood that the network device may be a device that includes one or more of a CU node, a DU node, and an AAU node. In addition, the CU can be divided into network equipment in an access network (radio access network, RAN), or the CU can be divided into network equipment in a core network (core network, CN), which is not limited in this application.

In the embodiment of the present application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory). The operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiments of the application do not specifically limit the specific structure of the execution subject of the methods provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided according to the embodiments of the application. For example, the execution subject of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute the program.

In addition, various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques. The term "article of manufacture" as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.). In addition, various storage media described herein may represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.

FIG. 1 is a wireless communication system 100 applicable to the method for receiving DCI and the method for sending DCI provided by the embodiments of the present application. The wireless communication system 100 may include at least one network device, for example, the first network device 110 and the second network device 120 shown in FIG. 1. Both the first network device 110 and the second network device 120 can communicate with the terminal device 130 through a wireless air interface. The first network device 110 and the second network device 120 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located in the coverage area.

The wireless communication system 100 further includes one or more terminal devices (terminal devices) 130 located within the coverage area of the first network device 110 and the second network device 120. The terminal device 130 may be mobile or fixed. The terminal device 130 may communicate with one or more core networks (core networks) via a radio access network (RAN).

The wireless communication system 100 can support CoMP transmission, that is, multiple cells or multiple transmission points (serving transmission reception points, serving TRP) can cooperate to send data to the same terminal device on the same time-frequency resource set or partially overlap Send data to the same terminal device on the set of time-frequency resources or send data to the same terminal device on different sets of time-frequency resources. Wherein, the multiple cells may belong to the same network device or different network devices, and may be selected according to channel gain or path loss, received signal strength, received signal instruction, and the like.

The terminal device 130 in the wireless communication system 100 can support multipoint transmission, that is, the terminal device 130 can communicate with the first network device 110 or the second network device 120, where the first network device 110 can serve as Serving network equipment. Serving network equipment refers to the provision of radio resource control (RRC) connection, non-access stratum (NAS) mobility management and security input for terminal equipment through the wireless air interface protocol Service network equipment.

Optionally, the first network device may be a serving network device, and the second network device may be a cooperative network device; or, the first network device may be a cooperative network device and the second network device may be a serving network device. Wherein, the serving network device may send control signaling to the terminal device, and the cooperative network device may send data to the terminal device; or, the serving network device may send control signaling to the terminal device, the serving network device and the cooperative network device Data can be sent to the terminal device at the same time, or the serving network device and the cooperative network device can send control signaling to the terminal device at the same time, and the serving network device and the cooperative network device can send data to the terminal device at the same time. The embodiment of the present application does not specifically limit this.

Taking the first network device as the serving network device and the second network device as the cooperative network device as an example, the number of the second network device can be one or more, and it can meet the requirements of different quasi-common sites/quasi-common sites with the first network device. Quasi-collocation (QCL) network equipment. Among them, the antenna port QCL is defined as the signal sent from the antenna port of the QCL will undergo the same large-scale fading. Large-scale fading includes delay spread, Doppler spread, Doppler shift, average channel gain, and average delay. .

It can be understood that both the first network device and the second network device may be serving network devices. For example, in a non-cell (non-cell) scenario or in a multi-cell scenario, the first network device and the second network device are both serving network devices in respective cells.

It should also be noted that the embodiments of the present application are also applicable to the same network device with non-QCL antenna ports. That is, the network device can be configured with different antenna panels, the antenna ports belonging to different antenna panels in the same network device may be non-QCL, and the corresponding cell-specific reference signal (CRS) resource configuration may also be possible Is different.

The above-mentioned communication system 100 to which the present application is applied is only an example, and the communication system to which the present application is applied is not limited to this. For example, the number of network devices and terminal devices included in the communication system may also be other numbers, or use D2D communication scenarios.

In order to facilitate understanding of the method for receiving DCI and the method for sending DCI provided in the embodiments of this application, the following briefly introduces several basic concepts involved in the embodiments of this application:

1. Control resource set (CORESET).

In order to improve the efficiency of blind detection of control channels by terminal equipment, the concept of control resource set was proposed during the formulation of the NR standard. The control resource set may be understood as a parameter set for configuring the PDCCH, where the parameter set includes physical resource configuration parameters, such as frequency domain resource configuration parameters. The parameter set may also include receiving beam indication information used to receive DCI signaling on the PDCCH, or QCL hypothesis, may also include the DMRS scrambling code configuration of the PDCCH, may also include frequency domain resource mapping methods, and may also include precoding methods And the number of RBs using the same precoding method. In addition, the control resource set will also be associated with the search space set. The search space set can be configured with PDCCH detection period and offset, starting symbol in a time slot and other information. For example, the search space set can be configured with a PDCCH period as 1 time slot, and the time domain start symbol is symbol 0, the terminal device can detect the PDCCH at the start position of each time slot. The aggregation level can also be configured in the search space set to indicate the size of the physical resource block on which each blind detection is based, and the DCI format type can also be configured in the search space set, which is determined according to the search space set and its associated CORESET set The type of the DCI format used to detect the DCI on the physical resource, for example, the number of bits for detecting the DCI can be determined according to the type of the DCI format, and the length of each field in the bit can also be determined to analyze the content indicated by the DCI.

Further, the control resource set in this application may be a CORESET or control region defined in the 5G mobile communication system, or an enhanced-physical downlink control channel (E-PDCCH) set, etc. .

The time-frequency position occupied by the PDCCH can be referred to as the downlink control region. In LTE, the PDCCH is always located in the first m (m may be 1, 2, 3) symbols in a subframe. In NR, the downlink control region can be flexibly configured by RRC signaling through CORESET and search space set (search space set): the control resource set can be configured with PDCCH or control channel element (control channel element, CCE) frequency domain position, time domain The number of continuous symbols (the maximum value is 3) and other information.

Among them, CORESET index 0 (or CORESET 0 for short) is special. It can be used to carry system information, such as system information block (SIB) information. It can be considered that the index of this CORESET is the CORESET with the smallest index in the serving cell. It can also be considered that the CORESET is the common search space of the cell, that is, the CORESET shared by multiple terminal devices.

Specifically, in the case where the transmission points shown in FIG. 1 respectively send DCI to the terminal device, each transmission point may configure a set of CORESET, and each transmission point separately issues DCI to the terminal device in its configured CORESET.

2. Bandwidth part (BWP).

The third generation partnership project (3rd generation partnership project, 3GPP) standards organization is currently formulating 5G protocol standards, also known as new wireless standards. Compared with the LTE system, the NR system can support a large system bandwidth, and for each terminal device, only a part of the system bandwidth may be used for data transmission. Network equipment can be used to configure different working bandwidths for each of its services according to current business requirements and scheduling strategies. For example, for low-cost and low-rate terminal equipment, or for services with low-rate requirements, network equipment can be configured with 5MHz working bandwidth , And for high-speed and high-performance terminal equipment, or for services that require high transmission rates, network equipment can be configured with a 100MHz working bandwidth. Therefore, NR introduces the concept of BWP, that is, for each terminal device, the total frequency domain resources occupied by current service transmission.

A BWP is a segment of continuous frequency resources on a cell carrier. A network device can configure BWPs with different bandwidth sizes for different terminal devices. When a BWP is configured and activated, this BWP is called an active BWP (active BWP). The data sent by the terminal equipment is carried in the upstream active BWP, and the control information or data sent by the network equipment will be limited to the downlink. active within BWP. The current protocol supports that one terminal device can only perform data transmission on one active BWP (one for uplink and one for downlink). The BWP allocated by the terminal device during initial access is called initial BWP (initial BWP), and the configuration information of the initial BWP is usually notified through system messages or broadcast messages.

In the embodiments of the present application, BWP may also be referred to as system bandwidth, and for brevity, it is referred to as BWP in the following.

3. DCI detection process.

The original control information bits are added with an additional cyclic redundancy check (cyclic redundancy check, CRC), and the CRC is used for error detection judgment when the receiving end performs a decoding operation. The CRC check bits are calculated by the number of data bits, assuming that the data bits are a ₀ , a ₁ , a ₂ , a ₃ ,..., a _A-1 , and the check bits are p ₀ , p ₁ , p ₂ , p ₃ ,...,p _L-1 , where A is the number of data bits, L is the number of parity bits, and L=24. The bit sequence _{_{a '0, a' 1,}} a '2, a' 3, ..., a 'A + in _L-1, for i = 0,1, ..., L- 1 when, a' _i = 1, for i = L, L + 1, ..., a + L-1 when, a _'i = a _iL, the output of the polynomial is determined in accordance with attached CRC bits after generation. After CRC attachment, the CRC check bits are _scrambled by the radio network temporary identifier (RNTI) sequence x _rnti,0 ,x _rnti,1 ,...,x _rnti,15 to form the sequence c ₀ ,c ₁ ,c ₂ ,c ₃ ,...,c _K-1 . The information bits that have undergone the above operations are transmitted to the channel coding module and rate matching is completed; then, bit modulation is performed according to a specific quadrature phase shift keying (QPSK) criterion, and then mapped to time-frequency domain resources. The time-frequency resource is configured through high-level signaling or through system messages (with CORESET as the configuration unit). The terminal device performs DCI detection and decoding according to time-frequency resources and specific blind detection (BD) rules.

In order to obtain control information, the terminal device needs to know in advance the number of bits of the DCI issued by the network device and the meaning of each bit (corresponding to the division of the DCI field, that is, which bits indicate what information). The above content can be Think of it as the DCI format (format).

4. PDCCH resource configuration mode.

Specifically, CORESET contains in the frequency domain

Resource blocks (resource blocks, RB), where the number of RBs and RB positions are configured through high-level signaling, and the frequency domain resource configuration mode of the PDCCH is indicated by a bitmap with a granularity of 6 RBs;

At the same time, CORESET contains

OFDM symbols, where the number of OFDM symbols and OFDM positions can also be configured through higher-layer signaling. Generally, a slot includes 14 OFDM symbols, that is, the PDCCH is usually in front of a slot.

OFDM symbols. The time domain location is indicated by the search space configuration information associated with the CORESET. The search space is also used to configure the types of DCIs to be distributed in the corresponding search space, including common search space (CSS) and user specific search space (USS). Among them, CSS is used to carry multiple instructions. The control information (group common DCI) of the terminal device is jointly detected by multiple terminal devices. The USS is used to carry control information (UE specific DCI) indicating a terminal device, which is detected by the terminal device.

The QCL assumption between the demodulation reference signal (DMRS) corresponding to the PDCCH and the channel state information reference signal (CSI-RS) is used to indicate the large-scale channel information and the received beam of the DMRS The beam pair link (BPL) can be obtained based on its associated CSI-RS.

It should be understood that a terminal device can be configured with multiple CORESETs. as shown in picture 2. Figure 2 is a schematic diagram of a CORESET configuration provided by an embodiment of the present application. It can be seen from Figure 2 that the network device can configure multiple CORESETs for the terminal device (CORESET#1 and CORESET#2 as shown in Figure 2). Furthermore, different CORESETs can correspond to different QCL assumptions of received signals and large-scale channel characteristic information. It is understandable that in the scenario of coordinated transmission of different sites, different sites have different transmission paths relative to terminal devices, which will lead to different QCL assumptions and large-scale channel characteristic information, so that different sites can occupy different CORESETs to issue control information.

5. Blind inspection.

The DCI for scheduling different data transmissions can be scrambled with different radio network temporary identifiers (RNTI). For example, RNTI may include cell identification (cell-RNTI, C-RNTI), access identification (random access-RNTI, RA-RNTI), paging identification (paging-RNTI, P-RNTI), etc., where C-RNTI It can be used to scramble the DCI of the data of the scheduling terminal device, the RA-RNTI can be used to scramble the random access response message sent by the scheduling network device to the terminal device, and the P-RNTI can be used to scramble the paging message.

Taking C-RNTI as an example, the PDCCHs of different terminal devices can be distinguished by their corresponding C-RNTIs, that is, the CRC of the DCI is masked by the C-RNTI. The terminal device generally does not know the format of the DCI currently sent, nor does it know which candidate PDCCH the DCI it needs is on. However, the terminal device knows what information it is currently expecting. For the different information expected, the terminal device uses The information on the corresponding RNTI and the configured candidate PDCCH is checked for CRC. If the CRC check is successful, the terminal device knows that the DCI information is needed by itself and also knows the corresponding DCI format, so as to further analyze the DCI Content.

In a possible implementation, the number of blind checks is used to characterize the processing process unit of the terminal device performing DCI detection, that is, the unit that defines the processing complexity consumed by the terminal device to perform DCI detection. The larger the number of blind checks, the greater the DCI detection. The greater the processing complexity is, the calculation rules for the number of blind checks are as follows:

(1) The same candidate PDCCH corresponds to multiple DCI formats, which consumes multiple blind checks;

(2) Different candidate PDCCHs from different control channel elements (CCE) are counted as multiple blind checks;

(3) Different candidate PDCCHs from different CORESETs are counted as multiple blind checks.

6. DCI format (DCI format) and related configuration information.

Because different scheduling requirements may require different DCI fields and number of bits, NR defines multiple DCI formats, and which fields are included in each DCI format and the size of each field can be radio resource control (RRC) Configured, or can also be pre-defined. NR currently supports 4 formats of DCI for scheduling data transmission, which are recorded as DCI format 0_0, DCI format 0_1, DCI format 1_0, and DCI format 1_1. The following briefly introduces the DCI of these 4 formats:

According to the uplink and downlink, the DCI of the above four formats can be divided into two categories: DCI used for scheduling physical uplink shared channel (PUSCH) and physical downlink shared channel (PDSCH) scheduling DCI, where DCI format 0_0 and DCI format 0_1 are DCI used to schedule PUSCH, and DCI format 1_0 and DCI format 1_1 are DCI used to schedule PDSCH.

According to specific functions, the DCI of the above four formats can also be divided into two categories: basic DCI (fallback DCI) and enhanced DCI (non-fallback DCI), among which DCI format 0_0 and DCI format 1_0 are basic DCI, and DCI format 0_1 And DCI format 1_1 are enhanced DCI. It should be understood that the content of the fields contained in the DCI of different formats and the payload size of the corresponding DCI are different.

In the process of reconfiguration without RRC, there will be a period of time when network equipment and terminal equipment have inconsistent understanding of the effective time of the new configuration. During this period of time, the network equipment can send basic DCI to the terminal equipment for data scheduling, thereby avoiding network equipment and Terminal devices have inconsistent understanding of RRC configuration. In other words, if the network device does not configure the transmission mode for the terminal device through high-level signaling, it is mainly the time period after the initial access until the RRC configuration is completed and effective. Since the terminal device cannot receive any configuration information indicated by the RRC signaling during this period, the protocol needs to predefine a transmission mechanism, that is, single-port transmission based on basic DCI scheduling. The main reason is that the transmission mechanism does not depend on the RRC signaling. Therefore, data transmission can be completed by indicating the parameters required for transmission through DCI signaling.

It should be understood that the above-mentioned basic DCI and enhanced DCI are only names for distinguishing two types of DCIs with different functions, and other names may also be used to describe them, which is not limited in the embodiment of the present application.

In a possible implementation manner, the above four DCI formats can be as shown in the following table:

Table 1 DCI format 0_0

In the above DCI format 0_0, except for the frequency domain resource allocation field and the SUL indicator field, the lengths of the remaining fields are fixed and do not need to be configured through RRC signaling. Therefore, the payload size of DCI format 0_0 is only the same as the FDRA The field is related to the SUL indicator field.

Table 2 DCI format 0_1

The above DCI format 0_1 includes fields configured by RRC signaling, such as carrier indicator bits, bandwidth part indicators, time domain resource allocation bits, and so on.

Table 3 DCI format 1_0

The aforementioned DCI format 1_0 is a DCI format when C-RNTI is used for scrambling and the FDRA field is not all 1s, or a DCI format is used for CS-RNTI scrambling. In the DCI format 1_0, except for the FDRA field, the length of the remaining fields are all fixed and do not need to be configured through RRC signaling. Therefore, the payload size of the DCI format 0_1 is only related to the FDRA field and can be understood as DCI The FDRA domain of format 0_1 is only

The value of is related.

Table 4 DCI format 1_1

In the aforementioned DCI format 1_1, in addition to the FDRA field, there are many fields that are not fixed in length and need to be configured through RRC signaling, for example, carrier indicator bits, bandwidth part indicators, time domain resource allocation bits, and so on. Therefore, the payload size of DCI format_1 is not only

The value of is related and is flexible and variable.

It should be understood that the above four DCI formats are used to schedule PDSCH and PUSCH. Among them, DCI format 0_1 and DCI format 1_1 are usually carried in USS, and DCI format 0_0 and DCI format 1_0 can be CSS or USS. In addition, there is DCI for indicating other system information, which is usually carried in the CSS.

7. The number of payload sizes in the DCI format.

The number of payload sizes in the DCI format needs to meet the following two judgment conditions at the same time, namely:

(1) The number of payload sizes of different DCI formats that need to be detected in a time slot in a cell or a carrier does not exceed 4;

(2) The number of payload sizes of different DCI formats scrambled by C-RNTI that needs to be detected in a time slot in a cell or a carrier does not exceed three.

Table 5 and Table 6 respectively show the different scenarios

with

The value of.

Table 5 DCI format 0_0

Table 6 DCI format 1_0

Specifically, for DCI format 0_0, in CSS, the FDRA domain

Using the number of RBs included in the initial UL BWP, in the USS, if the number threshold of the payload size of the DCI format is met, the value in the FDRA domain

Using active UL BWP calculation, if the number threshold of the payload size of the DCI format is not met, the value in the FDRA domain

Use initial UL BWP calculation. For DCI format 0_1, in CSS, the FDRA field

Using the initial DL BWP calculation, in the USS, if the number threshold of the payload size of the DCI format is met, the value in the FDRA domain

Using active DL BWP calculation, if the number threshold of the payload size of the DCI format is not met, the value in the FDRA domain

Calculate using initial DL BWP.

Since the network device may also send DCI in other formats to the terminal device in one time slot, for example, C-RNTI scrambled CRC DCI format 0_1, C-RNTI scrambled CRC DCI format 1_1, SFI-RNTI scrambled CRC The DCI format 2_0 is used to indicate the frame structure, and the DCI format 2_1 of the INT-RNTI scrambled CRC is used to indicate information such as data preemption. In order to avoid the high complexity of blind detection of terminal equipment in 1 time slot, network equipment and terminal equipment need to align the validity of DCI format 0_0 and DCI format 1_0 in CSS and USS according to the number threshold of the payload size of the DCI format. The size of the load.

In a possible implementation manner, in one time slot, the network device needs to send two DCIs with different payload sizes to the terminal device, which are DCI format 0_1 and C-RNTI of C-RNTI scrambled CRC. The DCI format 1_1 of scrambled CRC. At this time, since the DCI of other formats occupies a part of the payload size of the DCI format, the number of the payload size of the DCI scrambled by the C-RNTI of different DCI formats can be sent, and the number of the payload size of the DCI is still 2. The number of DCI payload sizes of different payload sizes is only one, because two conditions must be met at the same time, so there is one DCI payload size. If the DCI format 0_0 and DCI format 1_0 are to be sent in CSS and USS, alignment rules need to be used to align the two DCI formats with different payload sizes into a DCI format payload size alignment method.

Since there are multiple DCI formats with different payload sizes, in the process of network equipment sending DCI and terminal equipment receiving DCI, it may be necessary to set the payload size of DCI formats with different payload sizes to the payload size of a certain DCI format. The benchmark performs padding 0 or truncation until it is aligned with the payload size of the benchmark DCI format, so that the payload size of the DCI format can be aligned, reducing the number of DCI formats with different payload sizes, thereby reducing The complexity of blind detection of DCI by terminal equipment.

8. The payload size of the DCI format is aligned.

Step 1: According to the initial UL BWP included

Determine the payload size of DCI format 0_0 in CSS, according to CORESET 0 or the initial DL BWP included

Determine the payload size of DCI format 1_0 in the CSS, that is, the bits of other fields in DCI format 0_0 and DCI format 1_0 are predetermined, and the frequency domain resource indication field can be configured through signaling. number. If the payload size of DCI format 0_0 in the CSS is smaller than the payload size of DCI format 1_0 in the CSS, then 0 is filled in DCI format 0_0; if the payload size of DCI format 0_0 in the CSS is greater than that of DCI format 1_0 in the CSS The payload size is based on DCI format 1_0, and some bits in DCI format 0_0 are truncated. The truncated position is some bits in the frequency domain resource allocation field, that is, DCI format 0_0 aligns the payload according to DCI format 1_0 size.

It should be understood that the DCI payload size involved in the embodiments of the present application may be referred to as DCI size or DCI payload size. Specifically, the DCI payload size is understood as the number of bits of the DCI, and the number of bits of the DCI refers to the number of bits of the entire DCI that needs to be blindly checked on the terminal device side. It should be understood that the number of bits of the DCI after truncation or zero-filling is performed is equal to the number of remaining bits after the number of DCI information bits is truncated or the number of DCI information bits plus the number of complementary zero bits. If the DCI is truncated, the number of DCI bits is equal to the number of bits remaining after the number of DCI information bits is truncated. If the DCI is zero-filled, the number of bits of DCI is equal to the number of DCI information bits plus the supplement The number of zero bits.

Step 2: According to the UL BWP that is activated on the current carrier

Determine the payload size of DCI format0_0 in the USS, based on the DL BWP that is activated on the current carrier

Determine the payload size of DCI format 1_0 in the USS. If the payload size of DCI format 0_0 in the USS is less than the payload size of DCI format 1_0 in the USS, then 0 is filled in DCI format 0_0; if the payload size of DCI format 1_0 in the USS is smaller than that of DCI format 0_0 in the USS For the payload size, 0 is filled in DCI format 1_0. That is, the DCI format with a small payload size in the USS is filled with 0 according to the DCI format with a large payload size in the USS. Among them, the uplink enhanced carrier indicator field (UL/SUL indicator) in DCI format 0_0 is located after the zero-filled bits, only when the terminal device is configured with an uplink enhanced carrier, and the bits of DCI format 1_0 before the zero-filling operation is performed When the number of bits is greater than the number of bits in DCI format 0_0 before the zero-filling operation is performed, this field is 1 bit, otherwise it is 0 bits.

Step 3: If the payload size of DCI format 0_1 in the USS is the same as the payload size of DCI format 0_0 or DCI format 1_0 in the USS, add one digit at the end of DCI format 0_1; if DCI format 1_1 is the payload size of USS If the size is the same as the payload size of DCI format 0_0 or DCI format 1_0 in the USS, then DCI format 1_1 will be supplemented by one digit at the end.

Step 4: If the following conditions are met, complete the payload size alignment operation:

Otherwise, further operations:

Step Five:

Remove the bit 0 in the DCI format 0_1 and DCI format 1_1 in the USS in step 3.

According to CORESET 0 or included in the initial DL BWP

Re-determine the payload size of DCI format 1_0 in the USS;

According to the initial UL BWP included

Determine the payload size of DCI format 0_0 in the USS;

If the payload size of DCI format 0_0 in the USS is smaller than the payload size of DCI format 1_0 in the USS, then 0 is filled in DCI format 0_0; if the payload size of DCI format 0_0 in the USS is greater than that of DCI format 1_0 in the USS The size of the payload, the bits of the frequency domain resource allocation field in the DCI format 0_0 are truncated.

After the above steps, the UE does not expect the following situations to occur:

(1) The payload size of different DCI formats that needs to be detected in a time slot in a cell or a carrier exceeds 4;

(2) The payload size of different DCI formats scrambled by C-RNTI that needs to be detected in a time slot in a cell or a carrier exceeds three.

(3) The payload size of DCI format 0_0 in the USS is the same as the payload size of format 0_1 in the USS;

(4) The payload size of DCI format 1_0 in the USS is the same as the payload size of format 1_1 in the USS.

However, the above DCI payload size alignment method is applied in the CoMP scenario, which will cause the following phenomena:

In step 1, the number of RBs included in the initial DL/UL BWP or CORESET 0 is independently configured for each TRP. This will cause the DCI format 0_0 of each TRP to be inconsistent in the CSS, and the DCI format 1_0 in the CSS The payload size is inconsistent. After step one operation, there may be different TRPs corresponding to different DCI payload sizes.

For example, in the CoMP scenario, there are two TRPs (TRP#1 and TRP#2). TRP#1 and TRP#2 respectively send DCI format 0_0#1 and DCI format 0_0#2 in the CSS to the terminal device, and respectively in the CSS Send DCI format 1_0#1 and DCI format 1_0#2 to the terminal device. After the above steps are aligned, the DCI format 0_0#1 payload size is equal to DCI format 1_0#1, DCI format 0_0#2 The payload size is equal to DCI format1_0#2, if it is DCI format 1_0#1 and DCI format 1_0#2 payload size is not equal, TRP#1 and TRP#2 send DCI with different payload size format 1_0#1(DCI format 0_0#1) And DCI format1_0#2 (DCI format 0_0#2), for the terminal device, there are still many types of DCI payload sizes for blind detection.

In step three, two DCI payload sizes may appear in single TRP transmission (1 DCI format 0_1 in the USS payload size, 1 DCI format 1_1 in the USS payload size), while in multiple TRP transmission There may be 4 DCI payload sizes. (The payload size of 2 DCI format 0_1 in USS, and the payload size of 2 DCI format 1_1 in USS)

After the above steps, it is easier to exceed the DCI payload size threshold in multi-TRP transmission, and step 5 will be executed. Note that in step 5, the current protocol specifies the DCI format for aligning different payload sizes by aligning the DCI format 0_0 in the USS and the DCI format 0_0 in the CSS frequency domain resource indication field, as well as the DCI aligned in the USS. The frequency domain resource indicator field of format 1_0 and DCI format 1_0 in the CSS makes the DCI format 0_0 in the USS the same as the DCI format 0_0 in the CSS. The DCI format 1_0 in the USS and the DCI format 1_0 in the CSS are the same. The number of bits is the same. In multi-TRP transmission, it is agreed that the transmissions of two TRPs are on the same activated BWP, which means that the DCI format of the USS of the two TRPs has the same number of bits, and the DCI format of the USS of the two TRPs If the number of bits of 1_0 is the same, further execution of step 5 will not help reduce the number of payload sizes in the DCI format.

In summary, the current DCI format alignment operation is no longer applicable in the multi-TRP transmission scenario.

The method for receiving DCI and the method for sending DCI provided in the embodiments of the present application can be applied in a CoMP scenario. By aligning the payload size of the DCI format issued by different transmission points, the complexity of the blind detection of the DCI by the terminal device in the CoMP scenario can be reduced.

In addition, in order to facilitate the understanding of the embodiments of the present application, the following descriptions are made.

First, in this application, "used to indicate" can include both direct indication and indirect indication. When describing a certain indication information for indicating A, the indication information may directly indicate A or indirectly indicate A, but it does not mean that A must be carried in the indication information.

The information indicated by the instruction information is called the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated. For example, but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated or the information to be indicated. Indicates the index of the information, etc. The information to be indicated can also be indicated indirectly by indicating other information, where there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, and other parts of the information to be indicated are known or agreed in advance. For example, it is also possible to realize the indication of specific information by means of the pre-arranged order (for example, stipulated in the agreement) of various information, thereby reducing the indication overhead to a certain extent. At the same time, it can also identify the common parts of each information and give unified instructions, so as to reduce the instruction overhead caused by separately indicating the same information. In addition, the specific indication manner may also be various existing indication manners, such as, but not limited to, the foregoing indication manner and various combinations thereof. The specific details of the various indication modes can be referred to the prior art, which will not be repeated here. It can be seen from the above that, for example, when multiple pieces of information of the same type need to be indicated, a situation where different information is indicated in different ways may occur. In the specific implementation process, the required instruction method can be selected according to specific needs. The embodiment of the application does not limit the selected instruction method. As a result, the instruction method involved in the embodiment of the application should be understood as covering the instructions to be Various methods for obtaining information to be indicated.

The information to be instructed can be sent together as a whole, or divided into multiple sub-information to be sent separately, and the sending period and/or sending timing of these sub-information can be the same or different. The specific sending method is not limited in this application. The sending period and/or sending timing of these sub-information may be pre-defined, for example, pre-defined according to a protocol, or configured by the transmitting end device by sending configuration information to the receiving end device. Wherein, the configuration information may include, for example but not limited to, one or a combination of at least two of radio resource control signaling, media access control (media access control, MAC) layer signaling, and physical layer signaling. Among them, radio resource control signaling, for example, RRC layer signaling; MAC layer signaling, for example, includes MAC control element (CE); physical layer signaling, such as DCI.

Second, in the embodiments shown below, the first, second, and various numerical numbers are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. It is not used to limit the scope of the embodiments of the present application. For example, distinguish different preset correspondences, etc.

Third, in the embodiments shown below, "preset" may include a network device signaling instruction or pre-defined, for example, protocol definition. Among them, "pre-defined" can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate related information in the equipment (for example, including terminal equipment and network equipment). This application does not make any specific implementation methods. limited.

Fourth, the "saving" involved in the embodiments of the present application may refer to storing in one or more memories. The one or more memories may be provided separately, or integrated in an encoder or decoder, a processor, or a communication device. The one or more memories may also be partly provided separately, and partly integrated in the decoder, processor, or communication device. The type of the memory may be any form of storage medium, which is not limited in this application.

Fifth, the “protocols” involved in the embodiments of the present application may refer to standard protocols in the communication field, for example, may include LTE protocol, NR protocol, and related protocols applied to future communication systems, which are not limited in this application.

Sixth, the description of the transmission of downlink control information involved in the embodiments of the present application, unless otherwise specified, for terminal equipment, refers to receiving downlink control information, and for network equipment, refers to sending downlink control information.

Seventh, scheduling downlink transmission involved in the implementation of this application refers to a network device scheduling downlink data for a terminal device. Correspondingly, the network device sends downlink data according to the scheduling command, and the terminal device receives the scheduled downlink data. Scheduling uplink transmission involved in the implementation of this application refers to a network device scheduling uplink data for a terminal device. Accordingly, the terminal device sends uplink data according to the scheduling command, and the network device receives the scheduled uplink data.

The foregoing briefly introduced the method for receiving DCI and the application scenarios of the method for sending DCI provided by the embodiment of the present application in conjunction with FIG. 1, and briefly introduced the basic concepts involved in the embodiment of the present application. The method for receiving DCI and the method for sending DCI provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

It should be understood that the method provided in the embodiments of the present application may be applied to a system that communicates through a multi-antenna technology, for example, the communication system shown in FIG. 1. The communication system may include at least one network device and at least one terminal device. Multi-antenna technology can be used to communicate between network equipment and terminal equipment.

It should also be understood that the embodiments shown below do not particularly limit the specific structure of the execution body of the method provided by the embodiments of the present application, as long as the program that records the code of the method provided by the embodiments of the present application can be run according to the present application. The method provided in the application embodiment only needs to communicate. For example, the execution subject of the method provided in the embodiment of the application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute the program.

Hereinafter, without loss of generality, the interaction between the network device and the terminal device is taken as an example to describe in detail the method for receiving DCI and the method for sending DCI provided in the embodiments of the present application.

FIG. 3 is a schematic flowchart of a method for receiving DCI and a method for sending DCI according to an embodiment of the present application. The execution subject in this flowchart includes network equipment and terminal equipment.

The method for receiving DCI and the method for transmitting DCI include the following steps.

S310: The terminal device receives first configuration information.

The first configuration information is used to determine the payload size of the first DCI format;

S320: The terminal device receives second configuration information.

The second configuration information is used to determine the payload size of the second DCI format.

Wherein, the first configuration information and the second configuration information respectively correspond to two different control resource sets CORESET group or CORESET group number.

It should be understood that, in the embodiments of the present application, the sequence in which the terminal device receives the above-mentioned first configuration information and the second configuration information is not limited. It may be that the terminal device receives the above-mentioned first configuration information after receiving the above-mentioned first configuration information. The second configuration information may also be that the terminal device has received the foregoing second configuration information before receiving the foregoing first configuration information, or it may be that the terminal device has received the foregoing first configuration information and second configuration information at the same time. Further, the first configuration information and the second configuration information may be carried in one message or in different messages, which is not limited in this application.

Optionally, the terminal device shown in Fig. 3 communicates with two network devices (the first network device and the second network device) through a wireless air interface. The terminal device receives the aforementioned first configuration information from the first network device and the aforementioned second configuration information from the second network device. Specifically, both the first network device and the second network device in FIG. 3 can be represented as network devices.

It can also be understood that different network devices correspond to different CORESET groups, and the first network device and the second network device respectively configure the first CORESET group and the second CORESET group for the terminal device.

Optionally, the terminal device shown in Figure 3 communicates with two transmission points. The terminal device receives the aforementioned first configuration information from the first transmission point, and receives the aforementioned second configuration information from the second transmission point. Specifically, the first transmission point and the second transmission point in FIG. 4 may belong to the same network device.

Optionally, the terminal device may also receive the foregoing first configuration information and second configuration information from the same transmission point. The first configuration information is used to configure the configuration information of each field in the DCI sent by the first transmission point. The configuration information is used to configure the configuration information of each field in the DCI sent by the second transmission point.

In the following, the DCI corresponding to two transmission points or two CORESET groups is taken as an example to illustrate how to make all or all of the payload sizes of the DCI format corresponding to the two transmission points or two CORESET groups in the embodiment of this application Some DCI formats have the same payload size. The first CORESET group is the CORESET group configured by the first TRP or the CORESET group associated with the first TRP; the second CORESET group is the CORESET group configured by the second TRP or the CORESET group associated with the second TRP.

It should be understood that the number of multiple configuration information corresponding to multiple CORESET groups received by the terminal device in the embodiment of the present application is not limited. Two CORESET groups are taken as an example for illustration. The situation of the two CORESET groups is similar, so I won't repeat them here.

Specifically, after receiving the above-mentioned first configuration information, the terminal device determines that the DCI detected on the first CORESET group is the first DCI, that is, it can learn the payload size of the first DCI format based on the first configuration information. The first configuration information may be sent by the network device to the terminal side device through high-level signaling. Then, the terminal device can detect the DCI sent by the network device in one or more candidate PDCCHs corresponding to the first configuration information. In a possible implementation manner, the terminal device uses the number of bits corresponding to the DCI format indicated by the first configuration information and the corresponding RNTI to perform DCI detection on the first CORESET group, and the detected DCI is further based on the first configuration The DCI format indicated by the information parses out the information of each field in the DCI, and can also determine the payload size of the DCI. In the same way, after receiving the above-mentioned second configuration information, the terminal device can parse out the information of each field in the second DCI based on the second configuration information, and can also determine the payload size of the second DCI.

S330: The terminal device aligns the payload size of the first DCI format with the payload size of the second DCI format.

The method for receiving DCI and the method for sending DCI provided in this embodiment can reduce the complexity of blind DCI detection by the terminal device in the CoMP scenario by aligning the payload size of the DCI format issued by different transmission points.

It should be understood that the “alignment” involved in the embodiments of the present application refers to zero-filling or truncation of the payload sizes of two DCI formats with different payload sizes, so that the two DCI formats with different payload sizes are The payload size is the same. Among them, the payload size of the DCI format can also be understood as the bits of the DCI format.

In a possible implementation manner, the number of bits in the first DCI format is determined according to the first configuration information, and the number of bits in the second DCI format is determined according to the second configuration information, when the payload size of the first DCI format is less than For the payload size of the second DCI format, fill zeros in the first DCI format until the number of bits in the first DCI format is equal to the number of bits in the second DCI format;

In another possible implementation manner, when the payload size of the first DCI format is greater than the payload size of the second DCI format, determine the number of bits in the second DCI format, and fill in the second DCI format Zero until the number of bits in the second DCI format is equal to the number of bits in the first DCI format;

In another possible implementation manner, when the payload size of the first DCI format is smaller than the payload size of the second DCI format, the number of bits in the second DCI format is determined, and truncated in the second DCI format Until the number of bits in the second DCI format is equal to the number of bits in the first DCI format;

In yet another possible implementation manner, when the payload size of the first DCI format is greater than the payload size of the second DCI format, the number of bits in the first DCI format is determined and truncated in the first DCI format Until the number of bits in the first DCI format is equal to the number of bits in the second DCI format.

In the method for receiving DCI and the method for sending DCI provided in the embodiments of the present application, the DCI formats with different payload sizes have the same payload size by filling in 0 or truncating different DCI formats.

Hereinafter, taking the first DCI format and the second DCI format as the DCI used for scheduling downlink transmission or for scheduling uplink transmission in the specific search space USS or the common search space CSS as an example, how to achieve the alignment in S330 The payload size of the first DCI format and the payload size of the second DCI format.

step one:

Determine the payload size of the third DCI format and the payload size of the fourth DCI format configured in the user-specific search space USS according to the first configuration information, it can be understood that the third DCI format and the fourth DCI format belong to the first DCI format ; Determine the payload size of the fifth DCI format and the payload size of the sixth DCI format configured in the user-specific search space USS according to the second configuration information, it can be understood that the fifth DCI format and the sixth DCI format belong to the second DCI format. The third DCI format and the fifth DCI format are enhanced DCI formats for scheduling downlink transmission, and the fourth DCI format and the sixth DCI format are enhanced DCI formats for scheduling uplink transmission.

Optionally, the third, fourth, fifth, and sixth DCI formats are enhanced DCI formats, that is, the DCI format may include one or more of the following fields: a BWP indicator field with configurable bits to indicate the current carrier Internally activated BWP; time domain resource location indication field with configurable bits, used to indicate the time domain resource location occupied by PDSCH; PRB bundling size indication field with configurable bits, used to indicate the same precoding in PDSCH The frequency domain resource granularity; the rate matching resource indicator field with configurable bits is used to indicate the rate matching resource corresponding to the PDSCH; the zero-power CSI-RS trigger field with configurable bits is used to trigger a zero-power CSI- RS resource set; TB2 modulation and coding scheme, new data indication, redundancy version indication field, used to indicate the transmission scheme of the second TB; PDSCH to HARQ-ACK feedback timing indication field with configurable bits, used to indicate The time domain resource that carries PDSCH feedback information; the transmission configuration indication field with configurable bits is used to indicate the QCL hypothesis for receiving PDSCH and corresponding DMRS; the SRS trigger field with configurable bits is used to trigger the SRS resource set; Configure the bit number of precoding information and layer number indication field, used to indicate the number of ports and precoding information occupied by data transmission; CSI request trigger indication field with configurable bit number, used to trigger CSI reporting; configurable bit The DMRS sequence initialization indication field is used to indicate the initialization value of the DMRS sequence.

The foregoing alignment of the payload size of the first DCI format and the payload size of the second DCI format includes:

Align the payload size of the third DCI format with the payload size of the fifth DCI format, and/or,

Align the payload size of the fourth DCI format and the payload size of the sixth DCI format.

Specifically, aligning the payload size of the third DCI format with the payload size of the fifth DCI format includes:

When the payload size of the third DCI format determined according to the first configuration information is greater than the payload size of the fifth DCI format determined according to the second configuration information, fill zeros in the fifth DCI format until the fifth The number of bits in the DCI format is equal to the number of bits in the third DCI format, and the number of bits filled with zeros is used as the number of bits in the fifth DCI format;

When the payload size of the third DCI format determined according to the first configuration information is smaller than the payload size of the fifth DCI format determined according to the second configuration information, fill zeros in the third DCI format until the third The number of bits in the DCI format is equal to the number of bits in the fifth DCI format, and the number of bits filled with zeros is used as the number of bits in the third DCI format.

For example, the payload size of the third DCI format is 10 bits, the payload size of the fifth DCI format is 11 bits, and 1 bit 0 is filled in the third DCI format, so that the payload size of the third DCI format is 11 bits . In the embodiment of this application, there is no restriction on how to fill 0 in the DCI format. You can refer to the solution of filling 0 in the DCI format specified in the current protocol TS 38.212.

It should be understood that, in order to align the DCI formats of different payload sizes in the embodiments of the present application, filling 0 in the DCI format is just an example, and 1 may also be filled in the DCI format.

Optionally, filling 0 in the DCI format can also mean adding n bits to the end of a certain field in the DCI format determined according to the corresponding configuration information and setting all the added n bits to 0.

For another example, the payload size of the third DCI format is 11 bits, the payload size of the fifth DCI format is 10 bits, and 1 bit 0 is filled in the fifth DCI format, so that the payload size of the fifth DCI format is 11 Bits.

It can be understood that the aforementioned alignment of the payload size of the third DCI format and the payload size of the fifth DCI format is the alignment of the DCI format used for scheduling downlink transmission in the user-specific search spaces corresponding to two different CORESET groups.

Specifically, aligning the payload size of the fourth DCI format with the payload size of the sixth DCI format includes: when the payload size of the fourth DCI format determined according to the first configuration information is larger than the payload size determined according to the second configuration information The payload size of the sixth DCI format is filled with zeros in the sixth DCI format until the number of bits in the sixth DCI format is equal to the number of bits in the fourth DCI format, and the number of bits after zero filling is regarded as the sixth The number of bits in the DCI format;

When the payload size of the fourth DCI format determined according to the first configuration information is smaller than the payload size of the sixth DCI format determined according to the second configuration information, fill zeros in the fourth DCI format until the first The number of bits in the four DCI format is equal to the number of bits in the sixth DCI format, and the number of bits filled with zeros is used as the number of bits in the fourth DCI format.

For example, the payload size of the fourth DCI format is 10 bits, the payload size of the sixth DCI format is 11 bits, and 1 bit 0 is filled in the fourth DCI format, so that the payload size of the fourth DCI format is 11 bits .

For another example, the payload size of the fourth DCI format is 11 bits, the payload size of the sixth DCI format is 10 bits, and 1 bit 0 is filled in the sixth DCI format, so that the payload size of the sixth DCI format is 11 Bits.

It can be understood that the aforementioned alignment of the payload size of the fourth DCI format and the payload size of the sixth DCI format is the alignment of the DCI formats used for scheduling uplink transmission in the user-specific search spaces corresponding to different CORESET groups.

That is to say, after performing step 1, the enhanced DCI format used for scheduling uplink transmission in the USS corresponding to the two transmission points (TRP#1 and TRP#2) or the two CORESET groups can be aligned, and/or, Two transmission points or two CORESET groups respectively correspond to the enhanced DCI format alignment in the USS for scheduling downlink transmission.

It should be understood that performing S330 does not necessarily include step 1. For example, when the protocol specifies that the payload size of the third DCI format is the same as the payload size of the fifth DCI format, there is no need to perform the two transmission points or Alignment of the enhanced DCI format used for scheduling downlink transmission in the USS corresponding to the two CORESET groups; or,

When the protocol stipulates that the payload size of the fourth DCI format is the same as the payload size of the sixth DCI format, there is no need to perform the two transmission points or two CORESET groups corresponding to the USS for scheduling uplink The transmitted, enhanced DCI format alignment.

Optionally, the method for receiving DCI and the method for sending DCI provided in the embodiments of the present application are the enhanced DCI format used to schedule uplink transmission in the USS corresponding to different transmission points in a specific search space or two CORESET groups respectively. , And/or, before the enhanced DCI format used to schedule downlink transmission. It is also necessary to align the basic DCI format used for scheduling uplink transmission in a specific search space, and/or the basic DCI format used for scheduling downlink transmission. The method for receiving DCI and the method for sending DCI provided in the embodiment of the present application before performing the above step one also need to perform the following step two.

Optionally, the method for receiving DCI and the method for sending DCI provided in the embodiments of the present application are used to align different transmission points in a specific search space with an enhanced DCI format for scheduling uplink transmission, and/or for scheduling downlink transmission After the enhanced DCI format. It is also necessary to align the basic DCI format used for scheduling uplink transmission in a specific search space, and/or the basic DCI format used for scheduling downlink transmission. The method for receiving DCI and the method for sending DCI provided in the embodiment of the present application after performing the above step 1 also need to perform the following step 2.

It should be understood that the sequence of steps one and two is not limited in this embodiment.

Step two:

Determine the payload size of the seventh DCI format and the payload size of the eighth DCI format configured in the USS according to the first configuration information. It can be understood that the seventh DCI format and the eighth DCI format belong to the first DCI format; The configuration information determines the payload size of the ninth DCI format and the payload size of the tenth DCI format configured in the USS. It can be understood that the ninth DCI format and the tenth DCI format belong to the second DCI format. The eighth DCI format and the tenth DCI format are basic DCI formats for scheduling downlink transmission, and the seventh DCI format and the ninth DCI format are basic DCI formats for scheduling uplink transmission.

Optionally, the payload size of the seventh DCI format is equal to the payload size of the ninth DCI format, and the payload size of the eighth DCI format is equal to the payload size of the tenth DCI format.

Wherein, the payload size of the seventh DCI format and the payload size of the ninth DCI format are as shown in Table 1 above. The payload size of the DCI format is only related to the FDRA field and the SUL indicator field; the eighth DCI The payload size of the format and the payload size of the tenth DCI format are as shown in Table 3 above. The payload size of the DCI format is only related to the FDRA domain.

The method for receiving DCI and the method for sending DCI provided in the embodiments of the present application align the payload size of the DCI format so that the payload size of the seventh, ninth, eighth, and tenth DCI formats are the same, Including the following possibilities:

Possibly one:

Align the payload size of the seventh DCI format with the payload size of the eighth DCI format, and/or,

Align the payload size of the ninth DCI format with the payload size of the tenth DCI format.

Since the payload size of the seventh DCI format is equal to the payload size of the ninth DCI format, the payload size of the eighth DCI format is equal to the payload size of the tenth DCI format, that is, the payload size of the seventh DCI format is aligned with the eighth DCI format. The payload size of the DCI format, and/or the alignment of the payload size of the ninth DCI format and the payload size of the tenth DCI format can be understood as such that the seventh DCI format, the ninth DCI format, the eighth DCI format and the first The payload size of the DCI format is equal to the first payload size.

It should be understood that the foregoing first payload size is the payload size with the largest payload size among the payload sizes of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format.

Align the payload sizes of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format include:

When the payload size of the seventh DCI format determined according to the first configuration information is smaller than the first payload size, fill in zeros in the seventh DCI format until the number of bits in the seventh DCI format is equal to the first payload size. As the number of bits in the seventh DCI format;

When the payload size of the eighth DCI format determined according to the first configuration information is smaller than the first payload size, fill in zeros in the eighth DCI format until the number of bits in the eighth DCI format is equal to the first payload size, after zero filling As the number of bits in the eighth DCI format;

When the payload size of the ninth DCI format determined according to the second configuration information is smaller than the first payload size, fill in zeros in the ninth DCI format until the number of bits in the ninth DCI format is equal to the first payload size. As the number of bits in the ninth DCI format;

When the payload size of the tenth DCI format determined according to the second configuration information is smaller than the first payload size, fill in zeros in the tenth DCI format until the number of bits in the tenth DCI format is equal to the first payload size. The number of bits is used as the number of bits in the tenth DCI format.

Possibility two:

It should be understood that the foregoing first payload size is the payload size with the smallest payload size among the payload sizes of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format.

When the payload size of the seventh DCI format determined according to the first configuration information is greater than the first payload size, truncated in the seventh DCI format until the number of bits in the seventh DCI format is equal to the first payload size, the truncated bits The number of bits is used as the number of bits in the seventh DCI format;

When the payload size of the eighth DCI format determined according to the first configuration information is greater than the first payload size, truncated in the eighth DCI format until the number of bits in the eighth DCI format is equal to the first payload size, the truncated bits The number of bits is used as the number of bits in the eighth DCI format;

When the payload size of the ninth DCI format determined according to the second configuration information is greater than the first payload size, truncated in the ninth DCI format until the number of bits in the ninth DCI format is equal to the first payload size, the truncated bits The number of bits is used as the number of bits in the ninth DCI format;

When the payload size of the tenth DCI format determined according to the second configuration information is greater than the first payload size, truncated in the tenth DCI format until the number of bits in the tenth DCI format is equal to the first payload size, the truncated bits The number of bits is used as the number of bits in the tenth DCI format.

Possibly three:

The payload size of the eighth DCI format and the payload size of the tenth DCI format are equal to the first payload.

At least one of the following methods is adopted to make the payload size of the seventh DCI format and the ninth DCI format equal to the first payload size:

When the payload size of the seventh DCI format determined according to the first configuration information is greater than the first payload size, truncating in the seventh DCI format until the number of bits in the seventh DCI format is equal to the seventh DCI format The number of bits after truncation is used as the number of bits in the seventh DCI format;

When the payload size of the seventh DCI format determined according to the first configuration information is smaller than the first payload size, fill in zeros in the seventh DCI format until the number of bits in the seventh DCI format is equal to the seventh DCI The number of bits in the format, and the number of bits after zero filling is used as the number of bits in the seventh DCI format;

When the payload size of the ninth DCI format determined according to the second configuration information is greater than the first payload size, truncating in the ninth DCI format until the number of bits in the ninth DCI format is equal to the ninth DCI format The number of bits in the ninth DCI format is the number of bits after truncation;

When the payload size of the ninth DCI format determined according to the second configuration information is smaller than the first payload size, fill in zeros in the ninth DCI format until the number of bits in the ninth DCI format is equal to the ninth DCI The number of bits in the format, and the number of bits filled with zeros is used as the number of bits in the ninth DCI format.

Possible four:

The payload size of the seventh DCI format and the ninth DCI format is the same as the first payload size, the terminal device uses at least one of the following methods to make the eighth DCI format and the tenth DCI format The payload size of the format is equal to the first payload size:

When the payload size of the eighth DCI format determined according to the first configuration information is greater than the first payload size, truncating in the eighth DCI format until the number of bits in the eighth DCI format is equal to the first payload size, truncating The number of bits after that is used as the number of bits of the eighth DCI format;

When the payload size of the eighth DCI format determined according to the first configuration information is smaller than the first payload size, fill in zeros in the eighth DCI format until the number of bits in the eighth DCI format is equal to the first payload size, The number of bits after zero filling is used as the number of bits in the eighth DCI format;

When the payload size of the tenth DCI format determined according to the second configuration information is greater than the first payload size, truncating in the tenth DCI format until the number of bits in the tenth DCI format is equal to the first payload size, truncating The number of bits after that is used as the number of bits of the tenth DCI format;

When the payload size of the tenth DCI format determined according to the second configuration information is smaller than the first payload size, fill in zeros in the tenth DCI format until the number of bits in the tenth DCI format is equal to the first payload size, The number of bits after zero filling is used as the number of bits in the tenth DCI format.

Possibly five:

The terminal device may also adopt at least one of the following ways to make the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format equal to the first payload size, where: The first payload size is the payload size with the largest payload size among the payload sizes of the eighth DCI format and the tenth DCI format:

If the payload size of the eighth DCI format determined according to the first configuration information is smaller than the first payload size, fill in zeros in the eighth DCI format until the number of bits in the eighth DCI format is equal to the first payload size, The number of bits after zero filling is used as the number of bits in the eighth DCI format;

If the payload size of the tenth DCI format determined according to the second configuration information is smaller than the first payload size, fill in zeros in the tenth DCI format until the number of bits in the tenth DCI format is equal to the first payload size, The number of bits after zero filling is used as the number of bits in the tenth DCI format;

If the payload size of the seventh DCI format determined according to the first configuration information is smaller than the first payload size, fill in zeros in the seventh DCI format until the number of bits in the seventh DCI format is equal to the first payload size, The number of bits after zero filling is used as the number of bits in the seventh DCI format;

If the payload size of the seventh DCI format determined according to the first configuration information is greater than the first payload size, truncating in the seventh DCI format until the number of bits in the seventh DCI format is equal to the first payload size, truncating The number of bits after that is used as the number of bits of the seventh DCI format;

If the payload size of the ninth DCI format determined according to the second configuration information is smaller than the first payload size, fill in zeros in the ninth DCI format until the number of bits in the ninth DCI format is equal to the first payload size, The number of bits after zero filling is used as the number of bits in the ninth DCI format;

If the payload size of the ninth DCI format determined according to the second configuration information is greater than the first payload size, truncating in the ninth DCI format until the number of bits in the ninth DCI format is equal to the first payload size, truncating The number of bits after that is used as the number of bits of the ninth DCI format.

Possible six:

The terminal device may also adopt at least one of the following ways to make the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format equal to the first payload size, where: The first payload size is the payload size with the largest payload size among the payload sizes of the seventh DCI format and the ninth DCI format:

If the payload size of the eighth DCI format determined according to the first configuration information is greater than the first payload size, truncating in the eighth DCI format until the number of bits in the eighth DCI format is equal to the first payload size, truncating The number of bits after that is used as the number of bits of the eighth DCI format;

If the payload size of the tenth DCI format determined according to the second configuration information is greater than the first payload size, truncating in the tenth DCI format until the number of bits in the tenth DCI format is equal to the first payload size, truncating The number of bits after that is used as the number of bits of the tenth DCI format.

Possible seven:

The terminal device may also adopt at least one of the following ways to make the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format equal to the first payload size, where: The first payload size is the payload size with the smallest payload size among the payload sizes of the eighth DCI format and the tenth DCI format:

If the payload size of the tenth DCI format determined according to the second configuration information is greater than the first payload size, truncating in the tenth DCI format until the number of bits in the tenth DCI format is equal to the first payload size, truncating The number of bits after that is used as the number of bits of the tenth DCI format;

Possibly eight:

The terminal device may also adopt at least one of the following ways to make the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format equal to the first payload size, where: The first payload size is the payload size with the smallest payload size among the payload sizes of the seventh DCI format and the ninth DCI format:

If the payload size of the ninth DCI format determined according to the second configuration information is greater than the first payload size, fill in zeros in the ninth DCI format until the number of bits in the ninth DCI format is equal to the first payload size, The number of bits after zero filling is used as the number of bits in the ninth DCI format;

It should be understood that execution of S330 does not necessarily include step 2. For example, the operation of step 2 is moved to step 5 for execution, or for example, when the protocol specifies the payload size of the seventh DCI format and the eighth DCI format. When the payload size of is the same; and/or,

When the protocol stipulates that the payload size of the ninth DCI format is the same as the payload size of the tenth DCI format, there is no need to perform some or all of the alignment actions in step 2.

Further, in order to improve the reliability of the DCI demodulation by the terminal device, the payload size of the enhanced DCI format in the USS may be made different from the payload size of the basic DCI format.

Specifically, after the above step 2 is performed, the payload sizes of the basic DCI formats (the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format) are equal, and are recorded as the first payload size. After performing step 1 above, the DCI formats used for uplink scheduling in the enhanced DCI format (the fourth and sixth DCI formats) have the same payload size, and the DCI format used for downlink scheduling in the enhanced DCI format (the first The payload size of the third DCI format and the fifth DCI format) are equal.

So that the payload size of the enhanced DCI format is not equal to the payload size of the basic DCI format includes:

After performing the

above steps

1 and 2, when the payload size of the fourth DCI format determined according to the first configuration information is equal to the first payload size, a zero is filled at the end of the fourth DCI format, and the bit after the zero is filled The number of bits is used as the number of bits in the fourth DCI format;

When the payload size of the sixth DCI format determined according to the second configuration information is equal to the first payload size, a zero is filled at the end of the sixth DCI format, and the number of bits after zero filling is used as the bit of the fourth DCI format number;

When the payload size of the third DCI format determined according to the first configuration information is equal to the first payload size, a zero is filled at the end of the third DCI format, and the number of bits after zero filling is used as the bit of the fourth DCI format number;

When the payload size of the fifth DCI format determined according to the second configuration information is equal to the first payload size, a zero is filled at the end of the fifth DCI format, and the number of bits after zero filling is used as the bit of the fourth DCI format number.

For example, the first payload size is 11 bits, and when the payload size of the fourth DCI format is 11 bits, since the payload sizes of the fourth DCI format and the sixth DCI format are equal, the payload of the sixth DCI format can be obtained The size is 11 bits. In this case, a zero is filled at the end of the fourth DCI format and the sixth DCI format, so that the payload size of the fourth DCI format and the sixth DCI format are both 12 bits.

It should also be understood that the embodiment of the present application does not limit the execution of the above step 1 and/or step 2, so that the payload size of the enhanced DCI format is not equal to the payload size of the basic DCI format also includes:

When the payload size of the third DCI format determined according to the first configuration information is the same as the payload size of the seventh DCI format or the eighth DCI format, a zero is filled in the third DCI format;

When the payload size of the fourth DCI format determined according to the first configuration information is the same as the payload size of the seventh DCI format or the eighth DCI format, a zero is filled in the fourth DCI format;

When the payload size of the fifth DCI format determined according to the second configuration information is the same as the payload size of the seventh DCI format or the eighth DCI format, fill one bit with zero in the third DCI format;

When the payload size of the sixth DCI format determined according to the second configuration information is the same as the payload size of the seventh DCI format or the eighth DCI format, a zero is filled in the fourth DCI format.

Optionally, to perform step one above, and/or the method for receiving DCI and the method for sending DCI provided in the embodiment of the present application before step two also need to perform the following step three.

Optionally, to perform step one above, and/or, after step two, the method for receiving DCI and the method for sending DCI provided in the embodiments of the present application also need to perform the following step three.

It should be understood that in this embodiment, the sequence relationship between step three and step one and step two is not limited. When step one, step two and step three need to be performed, step three, step two and step one can be performed in sequence.

Step three:

Determine the payload size of the eleventh DCI format and the payload size of the twelfth DCI format configured in the search space CSS common to the cell according to the first configuration information. It can be understood that the eleventh DCI format and the twelfth DCI format belong to the first 1. DCI format; determine the payload size of the 13th DCI format and the payload size of the 14th DCI format configured in the search space CSS common to the cell according to the second configuration information, which can be understood as the 13th DCI format and the 14th The DCI format belongs to the second DCI format. The eleventh DCI format and the thirteenth DCI format are used for scheduling uplink transmission, and the twelfth DCI format and the fourteenth DCI format are used for scheduling downlink transmission.

Step 3 aligning the payload sizes of the 11th DCI format, the 12th DCI format, the 13th DCI format, and the 14th DCI format includes the following possibilities:

Possibly one:

Align the payload size of the twelfth DCI format with the payload size of the fourteenth DCI format and record it as the second payload size. The second payload size is valid in the twelfth DCI format and the fourteenth DCI format The payload size of the DCI format with the largest payload size.

Specifically, aligning the payload size of the twelfth DCI format and the payload size of the fourteenth DCI format includes:

When the payload size of the twelfth DCI format determined according to the first configuration information is greater than the payload size of the fourteenth DCI format determined according to the second configuration information, fill in the fourteenth DCI format with zeros Until the number of bits in the fourteenth DCI format is equal to the number of bits in the twelfth DCI format, the number of bits filled with zeros is used as the number of bits in the fourteenth DCI format;

When the payload size of the twelfth DCI format determined according to the first configuration information is smaller than the payload size of the fourteenth DCI format determined according to the second configuration information, fill in the twelfth DCI format with zeros Until the number of bits in the twelfth DCI format is equal to the number of bits in the fourteenth DCI format, the number of bits filled with zeros is used as the number of bits in the twelfth DCI format.

For example, the payload size of the twelfth DCI format is 10 bits, and the payload size of the fourteenth DCI format is 11 bits. Fill 1 bit 0 in the twelfth DCI format to make the twelfth DCI format payload size The size is 11 bits.

A possible implementation is that after aligning the payload size of the twelfth DCI format with the payload size of the fourteenth DCI format, the payload size of the eleventh DCI format and the payload size of the twelfth DCI format can be adjusted. The size is aligned, and the payload size of the thirteenth DCI format is aligned with the payload size of the fourteenth DCI format. In this implementation manner, it can be understood that the DCI format included in the first DCI format and the DCI format included in the second DCI format are respectively aligned, that is, the method for receiving DCI and the method for sending DCI provided in the embodiment of this application also include alignment The DCI format included in the first DCI format is aligned with the DCI format included in the second DCI format.

Another possible way, since the payload size of the twelfth DCI format is equal to the payload size of the fourteenth DCI format, after aligning the payload size of the twelfth DCI format with the payload size of the fourteenth DCI format , The payload size of the thirteenth DCI format can be aligned with the payload size of the twelfth DCI format, and the payload size of the eleventh DCI format can be aligned with the payload size of the fourteenth DCI format. In this implementation, it can be understood as aligning the first DCI format and the second DCI format.

Specifically, the payload size of the twelfth DCI format is equal to the payload size of the fourteenth DCI format, which is recorded as the second payload size.

Aligning the payload size of the eleventh DCI format and the payload size of the twelfth DCI format or the fourteenth DCI format includes:

When the payload size of the eleventh DCI format determined according to the first configuration information is greater than the second payload size, truncated in the eleventh DCI format until the number of bits in the eleventh DCI format is equal to the number of bits in the eleventh DCI format. 2. The size of the payload, the number of bits after truncation is used as the number of bits in the eleventh DCI format;

When the payload size of the eleventh DCI format determined according to the first configuration information is smaller than the second payload size, fill in zeros in the eleventh DCI format until the number of bits in the eleventh DCI format is equal to The size of the second payload, and the number of bits filled with zeros is used as the number of bits in the eleventh DCI format.

For example, the payload size of the eleventh DCI format is 11 bits, and the second payload size is 10 bits, which is truncated in the eleventh DCI format, so that the payload size of the eleventh DCI format is 10 bits. In the embodiments of this application, there is no limitation on how to perform truncation in the DCI format, and the solution for performing truncation in the DCI format specified in the current protocol can be referred to.

It should be understood that performing truncation in the DCI format in the embodiment of the present application refers to discarding some bits to form a shorter bit number based on the bits of the DCI format determined according to the configuration information. There is no restriction on how to perform truncation in the DCI format. You can refer to the solution for performing truncation in the DCI format specified in the current protocol TS 38.212.

Aligning the payload size of the 13th DCI format and the 12th DCI format or the 14th DCI format includes:

When the payload size of the thirteenth DCI format determined according to the second configuration information is greater than the second payload size, truncated in the thirteenth DCI format until the number of bits in the thirteenth DCI format is equal to the first 2. The size of the payload, the number of bits after truncation is used as the number of bits in the thirteenth DCI format;

When the payload size of the thirteenth DCI format determined according to the second configuration information is smaller than the second payload size, fill in zeros in the thirteenth DCI format until the number of bits in the thirteenth DCI format is equal to The second payload size, the number of bits after zero-filling is used as the number of bits in the thirteenth DCI format.

For example, the payload size of the thirteenth DCI format is 11 bits, and the second payload size is 10 bits, which is truncated in the thirteenth DCI format so that the payload size of the thirteenth DCI format is 10 bits.

Possibility two:

At least one of the following methods is adopted to make the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format equal to the second payload size, and the first 2. The payload size is the payload size of the DCI format with the smallest payload size in the twelfth DCI format and the fourteenth DCI format,

If the payload size of the twelfth DCI format determined according to the first configuration information is greater than the second payload size, truncating in the twelfth DCI format until the number of bits in the twelfth DCI format is equal to the second payload Size, the number of bits after truncation is used as the number of bits in the twelfth DCI format;

If the payload size of the fourteenth DCI format determined according to the second configuration information is greater than the second payload size, truncated in the fourteenth DCI format until the number of bits in the fourteenth DCI format is equal to the second payload Size, the number of bits after truncation is used as the number of bits in the fourteenth DCI format;

If the payload size of the eleventh DCI format determined according to the first configuration information is smaller than the second payload size, fill in zeros in the eleventh DCI format until the number of bits in the eleventh DCI format is equal to the second valid Payload size, the number of bits after zero filling is used as the number of bits in the eleventh DCI format;

If the payload size of the eleventh DCI format determined according to the first configuration information is greater than the second payload size, determine the number of bits of the eleventh DCI format, and truncate the eleventh DCI format to the eleventh The number of bits in the DCI format is equal to the size of the second payload, and the number of bits after truncation is used as the number of bits in the eleventh DCI format;

If the payload size of the thirteenth DCI format determined according to the second configuration information is smaller than the second payload size, fill in zeros in the thirteenth DCI format until the number of bits in the thirteenth DCI format is equal to the second valid Payload size, the number of bits after zero-filling is used as the number of bits in the thirteenth DCI format;

If the payload size of the thirteenth DCI format determined according to the second configuration information is greater than the second payload size, truncate in the thirteenth DCI format until the number of bits in the thirteenth DCI format is equal to the second payload Size, the number of bits after truncation is used as the number of bits in the thirteenth DCI format.

Possibly three:

At least one of the following methods is adopted to make the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format equal to the second payload size, and the first 2. The payload size is the payload size of the eleventh DCI format and the DCI format with the largest payload size in the thirteenth DCI format,

If the payload size of the twelfth DCI format determined according to the first configuration information is smaller than the second payload size, fill in zeros in the twelfth DCI format until the number of bits in the twelfth DCI format is equal to the second valid Payload size, the number of bits after zero filling is used as the number of bits in the twelfth DCI format;

If the payload size of the fourteenth DCI format determined according to the second configuration information is smaller than the second payload size, fill in zeros in the fourteenth DCI format until the number of bits in the fourteenth DCI format is equal to the second valid Payload size, the number of bits after zero filling is used as the number of bits in the fourteenth DCI format;

If the payload size of the fourteenth DCI format determined according to the second configuration information is greater than the second payload size, truncated in the fourteenth DCI format until the number of bits in the fourteenth DCI format is equal to the second payload Size, the number of bits after truncation is used as the number of bits in the fourteenth DCI format.

Possible four:

At least one of the following methods is adopted to make the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format equal to the second payload size, and the first 2. The payload size is the payload size of the DCI format with the smallest payload size in the eleventh DCI format and the 13th DCI format,

If the payload size of the eleventh DCI format determined according to the first configuration information is greater than the second payload size, truncated in the eleventh DCI format until the number of bits in the eleventh DCI format is equal to the second payload Size, the number of bits after truncation is used as the number of bits in the eleventh DCI format;

If the payload size of the thirteenth DCI format determined according to the second configuration information is greater than the second payload size, determine the number of bits of the thirteenth DCI format, and truncate the thirteenth DCI format to the thirteenth The number of bits in the DCI format is equal to the size of the second payload, and the number of bits after truncation is used as the number of bits in the thirteenth DCI format;

Possibly five:

At least one of the following methods is adopted to make the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format equal to the second payload size, and the first 2. The payload size is the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the DCI format with the largest payload size among the fourteenth DCI formats,

If the payload size of the thirteenth DCI format determined according to the second configuration information is smaller than the second payload size, determine the number of bits of the thirteenth DCI format, and fill in zeros in the thirteenth DCI format until the tenth The number of bits in the third DCI format is equal to the size of the second payload, and the number of bits filled with zeros is used as the number of bits in the thirteenth DCI format;

If the payload size of the fourteenth DCI format determined according to the second configuration information is smaller than the second payload size, fill in zeros in the fourteenth DCI format until the number of bits in the fourteenth DCI format is equal to the second valid Payload size, the number of bits after zero-filling is used as the number of bits in the fourteenth DCI format.

Possible six:

At least one of the following methods is adopted to make the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format equal to the second payload size, and the first 2. The payload size is the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the DCI format with the smallest payload size among the fourteenth DCI formats,

It should be understood that performing S330 does not necessarily include step 1. For example, when the protocol specifies the above-mentioned eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format. The payload size is the same, no need to perform step one.

It should also be understood that after performing step 1, step 2 and step 3 above, the terminal device determines whether to complete the aligning process, the method flow shown in FIG. 3 also includes the terminal device determining the number of DCI formats with different payload sizes Whether the preset conditions are met.

Specifically, the preset conditions involved in this application are similar to those stipulated in the current agreement, including:

It should be understood that the above-mentioned preset conditions are not particularly limited in the embodiments of the present application, and the provisions of the current protocol can be referred to, and it can also be applied in scenarios where new constraint conditions may be proposed in the future of communication technology development.

Further, when the number of DCI formats with different payload sizes is greater than or equal to a preset threshold, for example, the number of payload sizes of different DCI formats that need to be detected in a time slot in a cell or a carrier More than 4, and/or, the number of payload sizes of different DCI formats scrambled by C-RNTI that needs to be detected in 1 time slot in 1 cell or 1 carrier exceeds 3, and the terminal equipment also needs Further align the payload size of the DCI format. In this case, the method for receiving DCI and the method for sending DCI provided in the embodiments of the present application also need to perform step four.

Step 4:

First, determine whether the

above steps

1 and 2 are executed: whether the end of the fourth DCI format and the sixth DCI format are filled with one bit and zero, if so, remove the truncation of the fourth DCI format and the first Sixth, a zero at the end of the DCI format; in the same way, judge whether the

above steps

1 and 2 are executed: whether the end of the third DCI format and the fifth DCI format are filled with a zero respectively, if there are, remove them respectively One zero at the end of the third DCI format and the fifth DCI format.

For example, the payload size of the fourth DCI format (sixth DCI format) described after step 1 and step 2 is equal to the first payload size, and a zero is filled at the end of the fourth DCI format (sixth DCI format) , When step 4 is executed, first remove the bit zero at the end of the fourth DCI format and the sixth DCI format.

Through step 4, the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format is made equal to the foregoing second payload size, that is, the size of the DCI format in the CSS The payload size is the same as that of the basic DCI format in the USS, which can reduce the number of DCI formats with different payload sizes.

Specifically, the following three methods may be used to achieve the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format equal to the foregoing second payload size.

method one:

The payload size of the eighth DCI format is determined based on the manner of determining the payload size of the twelfth DCI format.

For example, determine the payload size of the eighth DCI format based on the initial downlink BWP indicated by the CORESET group associated with the first configuration information, or determine the payload size of the eighth DCI format based on the CORESET with the smallest index value in the CORESET group associated with the first configuration information The payload size.

The payload size of the tenth DCI format is determined based on the manner of determining the payload size of the fourteenth DCI format.

For example, determine the payload size of the tenth DCI format based on the initial downlink BWP indicated by the CORESET group associated with the second configuration information, or determine the payload size of the tenth DCI format based on the CORESET with the smallest index value in the CORESET group associated with the second configuration information The payload size.

The payload size of the seventh DCI format is determined based on the manner of determining the payload size of the eleventh DCI format.

For example, the payload size of the seventh DCI format is determined based on the initial uplink BWP indicated by the CORESET group associated with the first configuration information.

The payload size of the ninth DCI format is determined based on the manner of determining the payload size of the thirteenth DCI format.

For example, the payload size of the ninth DCI format is determined based on the initial uplink BWP indicated by the CORESET group associated with the second configuration information.

Then, the terminal device aligns the payload size of the seventh DCI format, the ninth DCI format, the tenth DCI format, and the payload size of the eighth DCI format determined in step 4 to the second payload size, including the following may:

Possibly one:

The second payload size is the payload size of the DCI format with the largest payload size in the eighth DCI format and the tenth DCI format.

When the payload size of the eighth DCI format determined according to the first configuration information is smaller than the payload size of the tenth DCI format determined according to the second configuration information, fill in the eighth DCI format with zeros until the eighth The number of bits in the DCI format is equal to the second payload size, and the number of bits filled with zeros is used as the number of bits in the eighth DCI format;

When the payload size of the eighth DCI format determined according to the first configuration information is greater than the payload size of the tenth DCI format determined according to the second configuration information, fill zeros in the tenth DCI format until the tenth The number of bits in the DCI format is equal to the size of the second payload, and the number of bits filled with zero is used as the number of bits in the tenth DCI format.

The terminal device respectively aligns the payload size of the seventh DCI format and the eighth DCI format, as well as the payload size of the ninth DCI format and the tenth DCI format.

Specifically, aligning the payload size of the seventh DCI format with the payload size of the eighth DCI format includes:

When the payload size of the seventh DCI format determined according to the first configuration information is greater than the payload size of the eighth DCI format, truncated in the seventh DCI format until the number of bits in the seventh DCI format is equal to the first 2. The size of the payload, the number of bits after truncation is used as the number of bits in the seventh DCI format;

When the payload size of the seventh DCI format determined according to the first configuration information is smaller than the payload size of the eighth DCI format, fill in zeros in the seventh DCI format until the number of bits in the seventh DCI format is equal to The size of the second payload, and the number of bits filled with zeros is used as the number of bits in the seventh DCI format.

Aligning the payload size of the ninth DCI format and the payload size of the tenth DCI format includes:

When the payload size of the ninth DCI format determined according to the second configuration information is greater than the payload size of the tenth DCI format, truncated in the ninth DCI format until the number of bits in the ninth DCI format is equal to the first 2. The size of the payload, the number of bits after truncation is used as the number of bits in the ninth DCI format;

When the payload size of the ninth DCI format determined according to the second configuration information is smaller than the payload size of the tenth DCI format, fill in zeros in the ninth DCI format until the number of bits in the ninth DCI format is equal to The size of the second payload, and the number of bits filled with zeros is used as the number of bits in the ninth DCI format.

Possibility two:

The following methods are adopted to make the payload size of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format equal to the second payload size, and the second payload size is the eighth DCI Format and the payload size of the DCI format with the smallest payload size in the tenth DCI format,

If the payload size of the eighth DCI format determined according to the first configuration information is greater than the second payload size, truncating in the eighth DCI format until the number of bits in the eighth DCI format is equal to the second payload size, truncating The number of bits after that is used as the number of bits of the eighth DCI format;

If the payload size of the tenth DCI format determined according to the second configuration information is greater than the second payload size, truncating in the tenth DCI format until the number of bits in the tenth DCI format is equal to the second payload size, truncating The number of bits after that is used as the number of bits of the tenth DCI format;

If the payload size of the seventh DCI format determined according to the first configuration information is smaller than the second payload size, determine the number of bits of the seventh DCI format, and fill in the seventh DCI format with zeros until the seventh DCI format The number of bits is equal to the size of the second payload, and the number of bits filled with zeros is used as the number of bits in the seventh DCI format;

If the payload size of the seventh DCI format determined according to the first configuration information is greater than the second payload size, determine the number of bits in the seventh DCI format, and truncate the seventh DCI format until the bits in the seventh DCI format The number of bits is equal to the size of the second payload, and the number of bits after truncation is used as the number of bits in the seventh DCI format;

If the payload size of the ninth DCI format determined according to the second configuration information is smaller than the second payload size, fill in zeros in the ninth DCI format until the number of bits in the ninth DCI format is equal to the second payload size, The number of bits after zero filling is used as the number of bits in the ninth DCI format;

If the payload size of the ninth DCI format determined according to the second configuration information is greater than the second payload size, truncating in the ninth DCI format until the number of bits in the ninth DCI format is equal to the second payload size, truncating The number of bits after that is used as the number of bits of the ninth DCI format.

Possibly three:

The following methods are adopted to make the payload size of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format equal to the second payload size, and the second payload size is the seventh DCI Format and the payload size of the DCI format with the largest payload size in the ninth DCI format,

If the payload size of the seventh DCI format determined according to the first configuration information is smaller than the second payload size, it is true that zeros are filled in the seventh DCI format until the number of bits in the eighth DCI format is equal to the second payload size , The number of bits after zero filling is used as the number of bits in the seventh DCI format;

If the payload size of the ninth DCI format determined according to the second configuration information is smaller than the second payload size, determine the number of bits of the ninth DCI format, and fill in zeros in the ninth DCI format until the value of the tenth DCI format The number of bits is equal to the size of the second payload, and the number of bits filled with zero is used as the number of bits in the ninth DCI format;

If the payload size of the eighth DCI format determined according to the first configuration information is smaller than the second payload size, fill in the eighth DCI format with zeros until the number of bits in the eighth DCI format is equal to the second payload size, The number of bits after zero filling is used as the number of bits in the eighth DCI format;

If the payload size of the tenth DCI format determined according to the second configuration information is smaller than the second payload size, fill in zeros in the tenth DCI format until the number of bits in the tenth DCI format is equal to the second payload size, The number of bits after zero filling is used as the number of bits in the tenth DCI format;

If the payload size of the tenth DCI format determined according to the second configuration information is greater than the second payload size, truncating in the tenth DCI format until the number of bits in the tenth DCI format is equal to the second payload size, truncating The number of bits after that is used as the number of bits of the tenth DCI format.

Possible four:

The following methods are adopted to make the payload size of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format equal to the second payload size, and the second payload size is the seventh DCI Format and the payload size of the DCI format with the smallest payload size in the ninth DCI format,

If the payload size of the seventh DCI format determined according to the first configuration information is greater than the second payload size, determine the number of bits in the seventh DCI format, and truncate the bits in the seventh DCI format until the eighth DCI format The number of bits is equal to the size of the second payload, and the number of bits after truncation is used as the number of bits in the seventh DCI format;

If the payload size of the ninth DCI format determined according to the second configuration information is greater than the second payload size, truncating in the ninth DCI format until the number of bits in the tenth DCI format is equal to the second payload size, truncating The last bit number is used as the bit number of the ninth DCI format;

Possibly five:

The following methods are adopted to make the payload size of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format equal to the second payload size, and the second payload size is the seventh DCI Format, the eighth DCI format, the ninth DCI format, and the payload size of the DCI format with the largest payload size in the tenth DCI format,

If the payload size of the seventh DCI format determined according to the first configuration information is smaller than the second payload size, determine the number of bits of the seventh DCI format, and fill in the seventh DCI format with zeros until the eighth DCI format The number of bits is equal to the size of the second payload, and the number of bits filled with zeros is used as the number of bits in the seventh DCI format;

If the payload size of the ninth DCI format determined according to the second configuration information is smaller than the second payload size, fill in zeros in the ninth DCI format until the number of bits in the tenth DCI format is equal to the second payload size, The number of bits after zero filling is used as the number of bits in the ninth DCI format;

If the payload size of the tenth DCI format determined according to the second configuration information is smaller than the second payload size, fill in zeros in the tenth DCI format until the number of bits in the tenth DCI format is equal to the second payload size, The number of bits after zero filling is used as the number of bits in the tenth DCI format.

Possible six:

The following methods are adopted to make the payload size of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format equal to the second payload size, and the second payload size is the seventh DCI The payload size of the DCI format with the smallest payload size among the eighth DCI format, the ninth DCI format, and the tenth DCI format,

In the mode, since the method of determining the payload size of the eighth DCI format is the same as the method of determining the payload size of the twelfth DCI format described above, the payload size of the eighth DCI format is equal to the effective payload size of the twelfth DCI format Load size; similarly, since the method of determining the payload size of the tenth DCI format is the same as the method of determining the payload size of the fourteenth DCI format described above, the payload size of the eighth DCI format is equal to the fourteenth DCI format The payload size. Furthermore, through the alignment shown in Mode 1, the payload size of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format can be equal to the second payload size, so that the CSS The payload size of the DCI format in the USS is the same as the payload size of the basic DCI format in the USS.

Way two:

The following manners are adopted to make the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format equal to the second payload size:

The seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format are truncated or filled with zeros, respectively.

In the second mode, the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format are aligned to the second payload size, then the DCI in the CSS The payload size of the format is the same as that of the basic DCI format in USS.

Way three:

At least one of the following methods is adopted to make the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format equal to the second payload size:

Determine the seventh DCI format, the ninth DCI format, and the eighth DCI format based on the initial BWP configuration included in the first configuration information or the CORESET configuration with the smallest index in the CORESET group included in the first configuration information And the payload size of the tenth DCI format; or,

Determine the seventh DCI format, the ninth DCI format, and the eighth DCI format based on the initial BWP configuration included in the second configuration information or the CORESET configuration with the smallest index in the CORESET group included in the second configuration information And the payload size of the tenth DCI format.

In the third manner, the payload sizes of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format are determined according to the same manner for determining the payload size of the DCI format, so that the first The seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format have the same payload size. And the second payload size is equal to the payload size determined based on the initial BWP configuration included in the second configuration information or the first configuration information or the CORESET configuration with the smallest index in the CORESET group included in the second configuration information. Therefore, through one of the methods of determining the payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format shown in the third manner, the seventh DCI format can be The payload size of the eighth DCI format, the ninth DCI format, and the tenth DCI format is equal to the second payload size, so that the payload size of the DCI format in the CSS is the same as that of the basic DCI format in the USS The payload size is the same.

It should be understood that the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format in step 4 are the implementations of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format. The DCI format before the same payload size operation.

After performing step 4, judge again whether the number of DCI formats with different payload sizes meets the preset condition. It should be understood that after performing step 4, the terminal device does not expect the following situations to occur:

(2) The number of payload sizes of different DCI formats scrambled by C-RNTI that needs to be detected in a time slot in a cell or a carrier does not exceed 3;

(3) The payload size of the basic DCI format used for uplink scheduling in the specific search space is equal to the payload size of the enhanced DCI format used for uplink scheduling;

(4) The payload size of the basic DCI format used for downlink scheduling in the specific search space is equal to the payload size of the enhanced DCI format used for downlink scheduling.

Optionally, after performing step 4, the network equipment should ensure that the following conditions do not occur:

It should be understood that, for the network device side, the network device also needs to perform alignment before sending DCI. The method shown in FIG. 3 also includes S311. The network device aligns the payload size of the first DCI format with the validity of the second DCI format. The payload size and the specific alignment method are similar to those on the terminal device side, so I will not repeat them here.

A possible way, only one of the two transmission points needs to perform the above-mentioned process of aligning the payload size of the first DCI format with the payload size of the second DCI format, and the number of DCI formats with different payload sizes is sufficient. Meet the above-mentioned preset conditions.

Optionally, the third DCI format is the DCI format format 1_1 configured in the USS indicated by the first configuration information;

Specifically, the terminal device may determine the payload size of the DCI format 0_0 in the CSS of CORESET#1 according to the number of RBs included in the initial UL BWP of the CORESET#1 group associated with the first configuration information;

The terminal device may determine the payload size of DCI format 0_0 in the CSS of CORESET#2 according to the number of RBs included in the initial UL BWP of the CORESET#2 group associated with the second configuration information;

The terminal device can determine the payload size of the DCI format 1_0 in the CSS of CORESET#1 according to the CORESET with the smallest index in the CORESET#1 group associated with the first configuration information or the number of RBs included in the initial DL BWP of CORESET#1;

The terminal device may determine the payload size of the DCI format 1_0 in the CSS of CORESET#2 according to the number of RBs included in the CORESET with the smallest index or the initial DL BWP of CORESET#2 in the CORESET#2 group associated with the second configuration information;

The terminal device can determine the payload size of DCI format 0_0 in the USS of CORESET#1 group and the payload size of DCI format 0_0 in the USS of CORESET#2 group according to the number of RBs included in the activated UL BWP;

The terminal device can determine the payload size of the DCI format 1_0 in the USS of the CORESET#1 group and the payload size of the DCI format 1_0 in the USS of the CORESET#2 group according to the number of RBs included in the activated DL BWP.

FIG. 4 is a schematic flowchart of a method for receiving DCI and a method for sending DCI according to an embodiment of the present application. The execution subject in this flowchart includes network equipment and terminal equipment.

S410: The terminal device receives first configuration information.

S420: The terminal device receives second configuration information.

S410 and S420 in FIG. 4 are similar to S310 and S320 in FIG. 3, and will not be repeated here.

S430: The terminal device aligns the payload sizes of the multiple DCI formats in the first DCI format and the payload sizes of the multiple DCI formats in the second DCI format.

The method for receiving DCI and the method for sending DCI provided in this embodiment can reduce the complexity of blind detection of DCI by terminal devices in the CoMP scenario by aligning the payload sizes of different DCI formats in the DCI formats respectively issued by different transmission points. degree.

A possible implementation manner, when the payload size of the first DCI format is smaller than the payload size of the second DCI format, determine the number of bits of the first DCI format, and fill in the first DCI format with zeros Until the number of bits in the first DCI format is equal to the number of bits in the second DCI format;

Hereinafter, taking the first DCI format and the second DCI format as the DCI used for scheduling downlink transmission or for scheduling uplink transmission in the specific search space USS or the common search space CSS as an example, how to achieve the alignment in S430 The payload size of the multiple DCI formats in the first DCI format and the payload size of the multiple DCI formats in the second DCI format.

step one:

Determine the payload size of the third DCI format and the payload size of the fourth DCI format configured in the user-specific search space USS according to the first configuration information, it can be understood that the third DCI format and the fourth DCI format belong to the first DCI format , Determining the payload size of the fifth DCI format and the payload size of the sixth DCI format configured in the USS according to the second configuration information, it can be understood that the fifth DCI format and the sixth DCI format belong to the second DCI format,

The third DCI format and the fifth DCI format are used for scheduling enhanced DCI formats for downlink transmission, and the fourth DCI format and the sixth DCI format are used for scheduling enhanced DCI formats for uplink transmission;

At least one of the following ways is used to make the payload size of the third DCI format the same as the payload size of the fourth DCI format, and the payload size of the fifth DCI format and the sixth DCI format The payload size is the same:

When the payload size of the third DCI format determined according to the first configuration information is greater than the payload size of the fourth DCI format determined according to the first configuration information, fill zeros in the fourth DCI format until the fourth The number of bits in the DCI format is equal to the number of bits in the third DCI format, and the number of bits filled with zeros is used as the number of bits in the fourth DCI format;

When the payload size of the third DCI format determined according to the first configuration information is smaller than the payload size of the fourth DCI format determined according to the first configuration information, fill zeros in the third DCI format until the fourth The number of bits in the DCI format is equal to the number of bits in the third DCI format, and the number of bits filled with zeros is used as the number of bits in the third DCI format;

For example, the payload size of the third DCI format is 10 bits, the payload size of the fourth DCI format is 11 bits, and 1 bit 0 is filled in the third DCI format, so that the payload size of the third DCI format is 11 bits . In the embodiment of this application, there is no restriction on how to fill 0 in the DCI format. You can refer to the solution for filling 0 in the DCI format specified in the current protocol.

When the payload size of the fifth DCI format determined according to the second configuration information is greater than the payload size of the sixth DCI format determined according to the second configuration information, fill zeros in the sixth DCI format until the sixth The number of bits in the DCI format is equal to the number of bits in the fifth DCI format, and the number of bits filled with zeros is used as the number of bits in the sixth DCI format;

When the payload size of the fifth DCI format determined according to the second configuration information is smaller than the payload size of the sixth DCI format determined according to the second configuration information, fill zeros in the fifth DCI format until the fifth The number of bits in the DCI format is equal to the number of bits in the sixth DCI format, and the number of bits filled with zeros is used as the number of bits in the fifth DCI format.

It can be understood that the DCI format used for scheduling downlink transmission and the DCI format used for scheduling uplink transmission in the user-specific search space corresponding to the same transmission point or CORESET group are aligned.

It should be understood that performing S430 does not necessarily include step 1. For example, when the protocol specifies that the payload size of the third DCI format is the same as the payload size of the fourth DCI format, there is no need to perform alignment of the third DCI format. The payload size and the payload size of the fourth DCI format.

Optionally, the method for receiving DCI and the method for sending DCI provided in the embodiments of the present application are the enhanced DCI format used for scheduling uplink transmission and the enhanced DCI format used for scheduling downlink transmission of different transmission points in a specific search space. Before the format. It is also necessary to align the basic DCI format used for scheduling uplink transmission in a specific search space, and/or the basic DCI format used for scheduling downlink transmission. The method for receiving DCI and the method for sending DCI provided in the embodiment of the present application before performing the above step one also need to perform step two.

Optionally, the method for receiving DCI and the method for sending DCI provided in the embodiments of the present application are the enhanced DCI format used for scheduling uplink transmission and the enhanced DCI format used for scheduling downlink transmission of different transmission points in a specific search space. After the format. It is also necessary to align the basic DCI format used for scheduling uplink transmission in a specific search space, and/or the basic DCI format used for scheduling downlink transmission. The method for receiving DCI and the method for sending DCI provided in the embodiments of the present application after performing the above step 1 also need to perform step 2.

Step two is similar to step two shown in FIG. 3, and will not be repeated here. It should be understood that performing S430 does not necessarily include step two.

Further, in order to improve the accuracy of the DCI demodulation of the terminal device, the payload size of the enhanced DCI format in the USS may be made different from the payload size of the basic DCI format.

Specifically, after the above step 2 is performed, the payload sizes of the basic DCI formats (the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format) are equal, and are recorded as the first payload size. After performing the above step 1, the payload sizes of the third DCI format and the fourth DCI format are the same, and the payload sizes of the fifth DCI format and the sixth DCI format are the same.

After performing the

above steps

1 and 2, when the payload size of the third DCI format and the fourth DCI format determined according to the first configuration information is equal to the first payload size, the third DCI format and the fourth DCI format Fill in one zero at the end of the payload size of the format; for the same reason,

After performing the

above steps

1 and 2, when the payload size of the fifth DCI format and the sixth DCI format determined according to the second configuration information is equal to the first payload size, the fifth DCI format and the sixth DCI format The end of the payload size of the format is filled with a zero.

Step three:

Determine the payload size of the eleventh DCI format and the payload size of the twelfth DCI format configured in the search space CSS common to the cell according to the first configuration information, which can be understood as the eleventh DCI format and the twelfth DCI format Belongs to the first DCI format,

Determine the payload size of the thirteenth DCI format and the payload size of the fourteenth DCI format configured in the CSS according to the second configuration information. It can be understood that the thirteenth DCI format and the fourteenth DCI format belong to the second DCI format,

Wherein, the eleventh DCI format and the thirteenth DCI format are used for scheduling uplink transmission, and the twelfth DCI format and the fourteenth DCI format are used for scheduling downlink transmission;

At least one of the following methods is used to make the payload size of the twelfth DCI format equal to the payload size of the eleventh DCI format, and the payload size of the thirteenth DCI format equal to the tenth 4. The payload size of the DCI format:

When the payload size of the eleventh DCI format determined according to the first configuration information is greater than the payload size of the twelfth DCI format, truncate the bits in the eleventh DCI format until the eleventh DCI format The number of bits is equal to the number of bits in the twelfth DCI format, and the number of bits after truncation is used as the number of bits in the eleventh DCI format;

When the payload size of the eleventh DCI format determined according to the first configuration information is smaller than the payload size of the twelfth DCI format, fill in zeros in the eleventh DCI format until the eleventh DCI format The number of bits is equal to the number of bits in the twelfth DCI format, and the number of bits filled with zeros is used as the number of bits in the eleventh DCI format;

When the payload size of the thirteenth DCI format determined according to the second configuration information is greater than the payload size of the fourteenth DCI format, truncating the bits in the thirteenth DCI format until the thirteenth DCI format The number of bits is equal to the number of bits in the fourteenth DCI format, and the number of bits after truncation is used as the number of bits in the thirteenth DCI format;

When the payload size of the thirteenth DCI format determined according to the second configuration information is smaller than the payload size of the fourteenth DCI format, fill in zeros in the thirteenth DCI format until the size of the thirteenth DCI format The number of bits is equal to the number of bits in the fourteenth DCI format, and the number of bits filled with zeros is used as the number of bits in the thirteenth DCI format.

It should be understood that performing S330 does not necessarily include step 1. For example, when the protocol specifies that the payload size of the eleventh DCI format is the same as the payload size of the twelfth DCI format, and the thirteenth DCI format The format is the same as the payload size of the fourteenth DCI format, and step one is not required.

It should also be understood that after performing step 1, step 2 and step 3, the terminal device determines whether the aligning process is completed, and the method flow shown in FIG. 4 also includes the terminal device determining the number of DCI formats with different payload sizes Whether the preset conditions are met.

Specifically, the preset conditions involved in the embodiment shown in FIG. 4 are similar to the preset conditions shown in FIG. 3, and will not be repeated here.

Specifically, the step four involved in the embodiment shown in FIG. 4 is similar to the method one in step four shown in FIG. 3, and will not be repeated here.

It should be understood that, for the network device side, the network device also needs to perform alignment before sending DCI. The method flow shown in FIG. 5 also includes S411. The network device aligns the payload size and the payload size of the multiple DCI formats in the first DCI format. The specific alignment of the payload sizes of the multiple DCI formats in the second DCI format is similar to that on the terminal device side, and will not be repeated here.

It should be understood that, in the foregoing method embodiments, the size of the sequence numbers of the foregoing processes does not imply the order of execution. The execution sequence of the processes should be determined by their functions and internal logic, and should not constitute the implementation process of the embodiments of the application. Any restrictions.

The method for receiving DCI and the method for sending DCI provided by the embodiments of the present application are described in detail above with reference to FIGS. 3 and 4, and the device for receiving DCI provided by the embodiments of the present application is described in detail below with reference to FIGS. 5-8.

Referring to FIG. 5, FIG. 5 is a schematic diagram of a device 50 for receiving DCI proposed in the present application. As shown in FIG. 5, the device 50 includes a receiving unit 510 and a processing unit 520.

The receiving unit 510 is configured to receive first configuration information, where the first configuration information is used to determine the payload size of the first DCI format;

The receiving unit 510 is further configured to receive second configuration information, where the second configuration information is used to determine the payload size of the second DCI format;

Wherein, the first configuration information and the second configuration information respectively correspond to two different control resource sets CORESET groups;

The processing unit 520 is configured to adopt at least one of the following methods to make the payload size of the first DCI format the same as the payload size of the second DCI format:

When the payload size of the first DCI format is smaller than the payload size of the second DCI format, fill in zeros in the first DCI format;

When the payload size of the first DCI format is greater than the payload size of the second DCI format, fill zeros in the second DCI format;

When the payload size of the first DCI format is smaller than the payload size of the second DCI format, truncating in the second DCI format;

When the payload size of the first DCI format is larger than the payload size of the second DCI format, truncation is performed in the first DCI format.

The apparatus 50 completely corresponds to the terminal device in the method embodiment, and the apparatus 50 may be the terminal device in the method embodiment, or a chip or functional module inside the terminal device in the method embodiment. The corresponding units of the apparatus 50 are used to execute the corresponding steps executed by the terminal device in the method embodiments shown in FIGS. 3 and 4.

Wherein, the receiving unit 510 in the apparatus 50 executes the steps of the terminal device receiving in the method embodiment. For example, perform step S310 in FIG. 3, receive the first configuration information, perform step S320 in FIG. 3, receive the second configuration information, and perform step S410 in FIG. 4, receive the first configuration information, and perform FIG. Step S420 in, receiving second configuration information;

The processing unit 620 executes the steps implemented or processed inside the terminal device in the method embodiment. For example, step S330 in FIG. 3 is executed to align the payload size of the first DCI format with the payload size of the second DCI format, and step S430 in FIG. 4 is also executed to align multiple DCI formats in the first DCI format. The payload size and the payload size of the multiple DCI formats in the second DCI format.

The apparatus 50 may further include a sending unit, which is used to perform the steps of sending by the terminal device, for example, sending information to other devices. The receiving unit 510 and the sending unit may constitute a transceiver unit, and have both receiving and sending functions. The processing unit 520 may be a processor. The sending unit may be a transmitter, and the receiving unit 510 may be a receiver. The receiver and transmitter can be integrated to form a transceiver.

Referring to FIG. 6, FIG. 6 is a schematic structural diagram of a terminal device 60 applicable to an embodiment of the present application. The terminal device 60 can be applied to the system shown in FIG. 1. For ease of description, FIG. 6 only shows the main components of the terminal device. As shown in FIG. 6, the terminal device 60 includes a processor (corresponding to the processing unit 520 shown in FIG. 5), a memory, a control circuit, an antenna, and an input and output device (corresponding to the receiving unit 510 shown in FIG. 5). The processor is used to control the antenna and the input and output device to send and receive signals, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory to execute the method for receiving DCI and the method for sending DCI proposed in this application. The corresponding process and/or operation performed by the equipment. I won't repeat them here.

Those skilled in the art can understand that, for ease of description, FIG. 6 only shows a memory and a processor. In actual terminal devices, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present application.

Referring to FIG. 7, FIG. 7 is a schematic diagram of a device 70 for sending DCI proposed in this application. As shown in FIG. 7, the device 70 includes a sending unit 710 and a processing unit 720.

The sending unit 710 is configured to send first configuration information, where the first configuration information is used to determine the payload size of the first DCI format;

The sending unit 710 is further configured to send second configuration information, where the second configuration information is used to determine the payload size of the second DCI format;

The processing unit 720 is configured to adopt at least one of the following methods to make the payload size of the first DCI format the same as the payload size of the second DCI format:

The device 70 completely corresponds to the network device in the method embodiment, and the device 70 may be the network device in the method embodiment, or a chip or functional module inside the network device in the method embodiment. The corresponding unit of the device 70 is used to execute the corresponding steps executed by the network device in the method embodiment shown in FIG. 1.

Wherein, the sending unit 710 in the apparatus 70 executes the steps of the network device sending in the method embodiment. For example, execute step S310 in FIG. 3, send the first configuration information, execute step S320 in FIG. 3, send the second configuration information, and execute step S410 in FIG. 4, send the first configuration information, and execute FIG. In step S420, the second configuration information is sent;

The processing unit 720 in the device 70 executes the steps implemented or processed inside the network device in the method embodiment. For example, perform step S311 in FIG. 3 to align the payload size of the first DCI format with the payload size of the second DCI format, and perform step S411 in FIG. 4 to align multiple DCI formats in the first DCI format. The payload size and the payload size of the multiple DCI formats in the second DCI format.

The apparatus 70 may further include a receiving unit, configured to perform the steps of receiving by the network device, for example, receiving information sent by other devices. The sending unit 710 and the receiving unit may constitute a transceiver unit, and have both receiving and sending functions. Wherein, the processing unit 720 may be a processor. The sending unit may be a receiver. The sending unit 710 may be a transmitter. The receiver and transmitter can be integrated to form a transceiver. Referring to FIG. 8, FIG. 8 is a schematic structural diagram of a network device 80 applicable to an embodiment of the present application, which can be used to implement the functions of the network device in the above-mentioned method for receiving and sending DCI. It can be a schematic diagram of the structure of a network device.

In a 5G communication system, the network equipment 80 may include CU, DU, and AAU. Compared with the network equipment in the LTE communication system, the network equipment consists of one or more radio frequency units, such as remote radio units (RRU) and one or more radio frequency units. For each baseband unit (BBU):

The non-real-time part of the original BBU will be divided and redefined as CU, which is responsible for processing non-real-time protocols and services. Part of the physical layer processing functions of the BBU are merged with the original RRU and passive antenna into AAU, and the remaining functions of the BBU are redefined as DU. Responsible for handling physical layer protocols and real-time services. In short, CU and DU are distinguished by the real-time nature of processing content, and AAU is a combination of RRU and antenna.

CU, DU, and AAU can be separated or co-located. Therefore, there will be multiple network deployment forms. A possible deployment form is shown in Figure 8 and is consistent with traditional 4G network equipment. CU and DU share hardware deployment. It should be understood that FIG. 8 is only an example, and does not limit the scope of protection of the present application. For example, the deployment form may also be DU deployment in a 7G BBU computer room, CU centralized deployment or DU centralized deployment, and higher-level centralized CU.

The AAU 801 that can implement the transceiver function is called the transceiver unit 8011, which corresponds to the sending unit 810 in FIG. 7. Optionally, the transceiver unit 8011 may also be called a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 8011 and a radio frequency unit 8012. Optionally, the transceiving unit 8011 may include a receiving unit and a transmitting unit, the receiving unit may correspond to a receiver (or receiver, receiving circuit), and the transmitting unit may correspond to a transmitter (or transmitter, transmitting circuit). The CU and DU that can implement internal processing functions are called a processing unit 802, which corresponds to the processing unit 720 in FIG. 7. Optionally, the processing unit 802 may control network devices, etc., and may be referred to as a controller. The AAU, CU and DU may be physically set together, or physically separated.

In addition, the network equipment is not limited to the form shown in FIG. 8, and may also be in other forms: for example, including BBU and adaptive radio unit (ARU), or including BBU and active antenna unit (AAU). ); It can also be customer premises equipment (CPE), or other forms, which are not limited in this application.

It should be understood that the network device 80 shown in FIG. 8 can implement the network device functions involved in the method embodiments of FIG. 3 and FIG. 4. The operations and/or functions of each unit in the network device 80 are respectively for implementing the corresponding process executed by the network device in the method embodiment of the present application. To avoid repetition, detailed description is omitted here. The structure of the network device illustrated in FIG. 8 is only a possible form, and should not constitute any limitation in the embodiment of the present application. This application does not exclude the possibility of other network device structures that may appear in the future.

An embodiment of the present application also provides a communication system, which includes the aforementioned terminal device and network device.

This application also provides a computer-readable storage medium that stores instructions in the computer-readable storage medium. When the instructions run on a computer, the computer executes the above-mentioned method shown in FIG. 3 and FIG. The various steps performed.

The present application also provides a computer-readable storage medium that stores instructions in the computer-readable storage medium. When the instructions run on a computer, the computer executes the network device in the method shown in FIG. 3 and FIG. The various steps performed.

The present application also provides a computer program product containing instructions. When the computer program product runs on a computer, the computer executes the steps performed by the terminal device in the method shown in FIG. 3 and FIG. 4.

This application also provides a computer program product containing instructions. When the computer program product is run on a computer, the computer can execute each step performed by the network device in the method shown in FIG. 3 and FIG. 4.

This application also provides a chip including a processor. The processor is used to read and run a computer program stored in the memory to execute the corresponding operations and/or processes performed by the terminal device in the method for receiving DCI and the method for sending DCI provided in this application. Optionally, the chip further includes a memory, the memory and the processor are connected to the memory through a circuit or a wire, and the processor is used to read and execute the computer program in the memory. Further optionally, the chip further includes a communication interface, and the processor is connected to the communication interface. The communication interface is used to receive data and/or information that needs to be processed, and the processor obtains the data and/or information from the communication interface, and processes the data and/or information. The communication interface can be an input and output interface.

This application also provides a chip including a processor. The processor is used to read and run a computer program stored in the memory to execute the corresponding operations and/or processes performed by the network device in the method for receiving DCI and the method for sending DCI provided in this application. Optionally, the chip further includes a memory, the memory and the processor are connected to the memory through a circuit or a wire, and the processor is used to read and execute the computer program in the memory. Further optionally, the chip further includes a communication interface, and the processor is connected to the communication interface. The communication interface is used to receive data and/or information that needs to be processed, and the processor obtains the data and/or information from the communication interface, and processes the data and/or information. The communication interface can be an input and output interface.

The terms "include" and "have" and any variations of them in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to clearly listed Instead, those steps or units listed may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

In addition, the term "and/or" in this application is only an association relationship describing the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, and both A and B exist. , There are three cases of B alone. In addition, the character "/" in this text generally means that the associated objects before and after are in an "or" relationship; the term "at least one" in this application can mean "one" and "two or more", for example, A At least one of, B and C can mean: A alone exists, B alone exists, C exists alone, A and B exist alone, A and C exist simultaneously, C and B exist simultaneously, and A and B and C exist simultaneously, this Seven situations.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A method for receiving downlink control information DCI, characterized in that it includes:

Receiving first configuration information, where the first configuration information is used to determine the payload size of the first DCI format;

Receiving second configuration information, where the second configuration information is used to determine the payload size of the second DCI format;

Wherein, the first configuration information and the second configuration information respectively correspond to two different control resource sets CORESET groups;

At least one of the following methods is adopted to make the payload size of the first DCI format the same as the payload size of the second DCI format:

When the payload size of the first DCI format is smaller than the payload size of the second DCI format, fill in zeros in the first DCI format;

When the payload size of the first DCI format is greater than the payload size of the second DCI format, fill zeros in the second DCI format;

When the payload size of the first DCI format is smaller than the payload size of the second DCI format, truncating in the second DCI format;

When the payload size of the first DCI format is larger than the payload size of the second DCI format, truncation is performed in the first DCI format.
A method for sending downlink control information DCI, characterized in that it includes:

Sending first configuration information, where the first configuration information is used to determine the payload size of the first DCI format;

Sending second configuration information, where the second configuration information is used to determine the payload size of the second DCI format;

Wherein, the first configuration information and the second configuration information respectively correspond to two different control resource sets CORESET groups;

At least one of the following methods is adopted to make the payload size of the first DCI format the same as the payload size of the second DCI format:

When the payload size of the first DCI format is smaller than the payload size of the second DCI format, fill in zeros in the first DCI format;

When the payload size of the first DCI format is greater than the payload size of the second DCI format, fill zeros in the second DCI format;

When the payload size of the first DCI format is smaller than the payload size of the second DCI format, truncating in the second DCI format;

When the payload size of the first DCI format is greater than the payload size of the second DCI format, truncating in the first DCI format.
The method of claim 1 or 2, wherein:

The first DCI format includes a third DCI format and a fourth DCI format configured in the user-specific search space USS,

The second DCI format includes a fifth DCI format and a sixth DCI format configured in the USS,

Wherein, the third DCI format and the fifth DCI format are used for scheduling downlink transmission, and the fourth DCI format and the sixth DCI format are used for scheduling uplink transmission;

At least one of the following methods is adopted to make the payload size of the third DCI format the same as the payload size of the fifth DCI format:

When the payload size of the third DCI format is greater than the payload size of the fifth DCI format, fill in zeros in the fifth DCI format;

When the payload size of the third DCI format is smaller than the payload size of the fifth DCI format, fill zeros in the third DCI format;

At least one of the following methods is adopted to make the payload size of the fourth DCI format the same as the payload size of the sixth DCI format:

When the payload size of the fourth DCI format is greater than the payload size of the sixth DCI format, fill zeros in the sixth DCI format;

When the payload size of the fourth DCI format is smaller than the payload size of the sixth DCI format, zeros are filled in the fourth DCI format.
The method of claim 1 or 2, wherein:

The first DCI format includes a third DCI format and a fourth DCI format configured in the user-specific search space USS,

The second DCI format includes a fifth DCI format and a sixth DCI format configured in the USS,

Wherein, the third DCI format and the fifth DCI format are used for scheduling downlink transmission, and the fourth DCI format and the sixth DCI format are used for scheduling uplink transmission;

At least one of the following ways is used to make the payload size of the third DCI format the same as the payload size of the fourth DCI format, and the payload size of the fifth DCI format and the sixth DCI format The payload size is the same:

When the payload size of the third DCI format is greater than the payload size of the fourth DCI format, fill zeros in the fourth DCI format;

When the payload size of the third DCI format is smaller than the payload size of the fourth DCI format, fill zeros in the third DCI format;

When the payload size of the fifth DCI format is greater than the payload size of the sixth DCI format, fill in zeros in the sixth DCI format;

When the payload size of the fifth DCI format is smaller than the payload size of the sixth DCI format, zeros are filled in the fifth DCI format.
The method according to claim 3 or 4, wherein:

The first DCI format further includes a seventh DCI format and an eighth DCI format configured in the USS,

The second DCI format also includes a ninth DCI format and a tenth DCI format configured in the USS, wherein the payload size of the seventh DCI format and the ninth DCI format is based on the currently activated uplink The size of the system bandwidth BWP is determined and used for scheduling uplink transmission, and the payload size of the eighth DCI format and the tenth DCI format is determined according to the size of the currently activated downlink system bandwidth BWP and used for scheduling downlink transmission,

The payload size of the eighth DCI format and the tenth DCI format is equal to the first payload size;

At least one of the following methods is adopted to make the payload size of the seventh DCI format and the ninth DCI format equal to the first payload size:

When the payload size of the seventh DCI format is greater than the first payload size, truncating in the seventh DCI format;

When the payload size of the seventh DCI format is smaller than the first payload size, fill zeros in the seventh DCI format;

When the payload size of the ninth DCI format is greater than the first payload size, truncating in the ninth DCI format;

When the payload size of the ninth DCI format is smaller than the first payload size, zeros are filled in the ninth DCI format.
The method according to claim 5, wherein the payload size of the third DCI format is made the same as the payload size of the fifth DCI format, and/or the fourth DCI format is made valid. After the payload size is the same as the payload size of the sixth DCI format, or,

When making the payload size of the third DCI format the same as the payload size of the fourth DCI format, and/or making the payload size of the fifth DCI format and the payload size of the sixth DCI format the same After the same size,

The method also includes:

When the payload size of any of the third DCI format, the fourth DCI format, the fifth DCI format, and the sixth DCI format is equal to the first payload size, the DCI Fill in one zero in the format.
The method according to any one of claims 1-6, characterized in that,

The first DCI format includes the eleventh DCI format and the twelfth DCI format configured in the search space CSS common to the cell,

The second DCI format includes a thirteenth DCI format and a fourteenth DCI format configured in the CSS,

Wherein, the eleventh DCI format and the thirteenth DCI format are used for scheduling uplink transmission, and the twelfth DCI format and the fourteenth DCI format are used for scheduling downlink transmission;

At least one of the following ways is adopted to make the payload size of the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format equal to the second payload The size of the second payload is the payload size of the DCI format with the largest payload size in the twelfth DCI format and the fourteenth DCI format,

If the payload size of the twelfth DCI format is smaller than the second payload size, fill in zeros in the twelfth DCI format;

If the payload size of the fourteenth DCI format is smaller than the second payload size, fill in zeros in the fourteenth DCI format;

If the payload size of the eleventh DCI format is smaller than the second payload size, fill in zeros in the eleventh DCI format;

If the payload size of the eleventh DCI format is greater than the second payload size, truncating in the eleventh DCI format;

If the payload size of the thirteenth DCI format is smaller than the second payload size, fill in zeros in the thirteenth DCI format;

If the payload size of the thirteenth DCI format is larger than the second payload size, truncation is performed in the thirteenth DCI format.
The method according to any one of claims 1-6, characterized in that,

The first DCI format includes the eleventh DCI format and the twelfth DCI format configured in the search space CSS common to the cell,

The second DCI format includes a thirteenth DCI format and a fourteenth DCI format configured in the CSS,

Wherein, the eleventh DCI format and the thirteenth DCI format are used for scheduling uplink transmission, and the twelfth DCI format and the fourteenth DCI format are used for scheduling downlink transmission;

At least one of the following methods is used to make the payload size of the twelfth DCI format equal to the payload size of the eleventh DCI format, and the payload size of the thirteenth DCI format equal to the tenth 4. The payload size of the DCI format:

When the payload size of the eleventh DCI format is greater than the payload size of the twelfth DCI format, truncating in the eleventh DCI format;

When the payload size of the eleventh DCI format is smaller than the payload size of the twelfth DCI format, fill zeros in the eleventh DCI format;

When the payload size of the thirteenth DCI format is greater than the payload size of the fourteenth DCI format, truncating in the thirteenth DCI format;

When the payload size of the thirteenth DCI format is smaller than the payload size of the fourteenth DCI format, zeros are filled in the thirteenth DCI format.
The method according to claim 7 or 8, wherein the method further comprises:

After determining that the number of DCI formats with different payload sizes is greater than or equal to a preset threshold, the method further includes at least one of the following methods:

Determining the payload size of the seventh DCI format and the eighth DCI format based on the initial BWP configuration included in the first configuration information or the CORESET configuration with the smallest index in the CORESET group included in the first configuration information;

Determining the payload size of the ninth DCI format and the tenth DCI format based on the initial BWP configuration included in the second configuration information or the CORESET configuration with the smallest index in the CORESET group included in the second configuration information;

The following manner is adopted to make the payload size of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format equal to the third payload size, and the third payload size Be the payload size of the DCI format with the largest payload size in the eighth DCI format and the tenth DCI format,

If the payload size of the eighth DCI format is smaller than the third payload size, fill in zeros in the eighth DCI format;

If the payload size of the tenth DCI format is smaller than the third payload size, fill in zeros in the tenth DCI format;

If the payload size of the seventh DCI format is smaller than the third payload size, fill in zeros in the seventh DCI format;

If the payload size of the seventh DCI format is greater than the third payload size, truncating in the seventh DCI format;

If the payload size of the ninth DCI format is smaller than the third payload size, fill in zeros in the ninth DCI format;

If the payload size of the ninth DCI format is larger than the third payload size, truncation is performed in the ninth DCI format.
The method according to claim 7, wherein the method further comprises:

After judging that the number of DCI formats with different payload sizes is greater than or equal to a preset threshold, the following methods are adopted to make the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format The payload size of is equal to the second payload size:

The seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format are truncated or filled with zeros, respectively.
The method according to claim 7, wherein the method further comprises:

After judging that the number of DCI formats with different payload sizes is greater than or equal to a preset threshold, at least one of the following methods is adopted to make the seventh DCI format, the ninth DCI format, the eighth DCI format, and the The payload size of the tenth DCI format is equal to the second payload size:

Determine the seventh DCI format, the ninth DCI format, and the eighth DCI format based on the initial BWP configuration included in the first configuration information or the CORESET configuration with the smallest index in the CORESET group included in the first configuration information And the payload size of the tenth DCI format; or,

Determine the seventh DCI format, the ninth DCI format, and the eighth DCI format based on the initial BWP configuration included in the second configuration information or the CORESET configuration with the smallest index in the CORESET group included in the second configuration information And the payload size of the tenth DCI format.
The method according to any one of claims 8-11, wherein the third DCI format is a DCI format format 1_1 configured in the USS indicated by the first configuration information;

The fourth DCI format is the DCI format format 0_1 configured in the USS indicated by the first configuration information;

The fifth DCI format is the DCI format format 1_1 configured in the USS indicated by the second configuration information;

The sixth DCI format is the DCI format format 0_1 configured in the USS indicated by the second configuration information;

The seventh DCI format is the DCI format format 0_0 configured in the USS indicated by the first configuration information;

The eighth DCI format is the DCI format format 1_0 configured in the USS indicated by the first configuration information;

The ninth DCI format is the DCI format format 0_0 configured in the USS indicated by the second configuration information;

The tenth DCI format is the DCI format format 1_0 configured in the USS indicated by the second configuration information;

The eleventh DCI format is the DCI format format 0_0 configured in the CSS indicated by the first configuration information;

The twelfth DCI format is the DCI format format 1_0 configured in the CSS indicated by the first configuration information;

The thirteenth DCI format is the DCI format format 0_0 configured in the CSS indicated by the second configuration information;

The fourteenth DCI format is the DCI format format 1_0 configured in the CSS indicated by the second configuration information.
A device for receiving downlink control information DCI, characterized by comprising:

A receiving unit, configured to receive first configuration information, where the first configuration information is used to determine the payload size of the first DCI format;

The receiving unit is further configured to receive second configuration information, where the second configuration information is used to determine the payload size of the second DCI format;

Wherein, the first configuration information and the second configuration information respectively correspond to two different control resource sets CORESET groups;

The processing unit is configured to adopt at least one of the following methods to make the payload size of the first DCI format the same as the payload size of the second DCI format:

When the payload size of the first DCI format is smaller than the payload size of the second DCI format, fill in zeros in the first DCI format;

When the payload size of the first DCI format is greater than the payload size of the second DCI format, fill zeros in the second DCI format;

When the payload size of the first DCI format is smaller than the payload size of the second DCI format, truncating in the second DCI format;

When the payload size of the first DCI format is greater than the payload size of the second DCI format, truncating in the first DCI format.
A device for sending downlink control information DCI, characterized by comprising:

A sending unit, configured to send first configuration information, where the first configuration information is used to determine the payload size of the first DCI format;

The sending unit is further configured to send second configuration information, where the second configuration information is used to determine the payload size of the second DCI format;

Wherein, the first configuration information and the second configuration information respectively correspond to two different control resource sets CORESET groups;

The processing unit is configured to adopt at least one of the following methods to make the payload size of the first DCI format the same as the payload size of the second DCI format:

When the payload size of the first DCI format is smaller than the payload size of the second DCI format, fill in zeros in the first DCI format;

When the payload size of the first DCI format is greater than the payload size of the second DCI format, fill zeros in the second DCI format;

When the payload size of the first DCI format is smaller than the payload size of the second DCI format, truncating in the second DCI format;

When the payload size of the first DCI format is greater than the payload size of the second DCI format, truncating in the first DCI format.
The device according to claim 13 or 14, characterized in that:

The first DCI format includes a third DCI format and a fourth DCI format configured in the user-specific search space USS,

The second DCI format includes a fifth DCI format and a sixth DCI format configured in the USS,

Wherein, the third DCI format and the fifth DCI format are used for scheduling downlink transmission, and the fourth DCI format and the sixth DCI format are used for scheduling uplink transmission;

The processing unit is configured to adopt at least one of the following methods to make the payload size of the third DCI format the same as the payload size of the fifth DCI format:

When the payload size of the third DCI format is greater than the payload size of the fifth DCI format, fill in zeros in the fifth DCI format;

When the payload size of the third DCI format is smaller than the payload size of the fifth DCI format, fill zeros in the third DCI format;

The processing unit is configured to adopt at least one of the following methods to make the payload size of the fourth DCI format the same as the payload size of the sixth DCI format:

When the payload size of the fourth DCI format is greater than the payload size of the sixth DCI format, fill zeros in the sixth DCI format;

When the payload size of the fourth DCI format is smaller than the payload size of the sixth DCI format, zeros are filled in the fourth DCI format.
The device according to claim 13 or 14, characterized in that:

The first DCI format includes a third DCI format and a fourth DCI format configured in the user-specific search space USS,

The second DCI format includes a fifth DCI format and a sixth DCI format configured in the USS,

Wherein, the third DCI format and the fifth DCI format are used for scheduling downlink transmission, and the fourth DCI format and the sixth DCI format are used for scheduling uplink transmission;

The processing unit is configured to adopt at least one of the following methods to make the payload size of the third DCI format the same as the payload size of the fourth DCI format, and the payload size of the fifth DCI format Same as the payload size of the sixth DCI format:

When the payload size of the third DCI format is greater than the payload size of the fourth DCI format, fill zeros in the fourth DCI format;

When the payload size of the third DCI format is smaller than the payload size of the fourth DCI format, fill zeros in the third DCI format;

When the payload size of the fifth DCI format is greater than the payload size of the sixth DCI format, fill zeros in the sixth DCI format;

When the payload size of the fifth DCI format is smaller than the payload size of the sixth DCI format, zeros are filled in the fifth DCI format.
The device according to claim 15 or 16, characterized in that:

The first DCI format further includes a seventh DCI format and an eighth DCI format configured in the USS,

The second DCI format also includes a ninth DCI format and a tenth DCI format configured in the USS,

Wherein, the payload sizes of the seventh DCI format and the ninth DCI format are determined according to the currently activated uplink system bandwidth BWP and used to schedule uplink transmission. The eighth DCI format and the tenth DCI format are The payload size is determined according to the currently activated downlink system bandwidth BWP and is used to schedule downlink transmission.

The payload size of the eighth DCI format and the tenth DCI format is equal to the first payload size;

The processing unit is configured to adopt at least one of the following methods to make the payload size of the seventh DCI format and the ninth DCI format equal to the first payload size:

When the payload size of the seventh DCI format is greater than the first payload size, truncating in the seventh DCI format;

When the payload size of the seventh DCI format is smaller than the first payload size, fill zeros in the seventh DCI format;

When the payload size of the ninth DCI format is greater than the first payload size, truncating in the ninth DCI format;

When the payload size of the ninth DCI format is smaller than the first payload size, zeros are filled in the ninth DCI format.
The apparatus according to claim 17, wherein the processing unit makes the payload size of the third DCI format the same as the payload size of the fifth DCI format, and/or makes the fourth After the payload size of the DCI format is the same as the payload size of the sixth DCI format, or,

Make the payload size of the third DCI format the same as the payload size of the fourth DCI format in the processing unit, and/or make the payload size of the fifth DCI format the same as the sixth DCI format After the payload size of the format is the same,

The processing unit is configured to: when the payload size of any DCI format of the third DCI format, the fourth DCI format, the fifth DCI format, and the sixth DCI format is equal to the first payload For large hours, fill a zero in the DCI format.
The device according to any one of claims 13-18, wherein:

The first DCI format includes the eleventh DCI format and the twelfth DCI format configured in the search space CSS common to the cell,

The second DCI format includes a thirteenth DCI format and a fourteenth DCI format configured in the CSS,

Wherein, the eleventh DCI format and the thirteenth DCI format are used for scheduling uplink transmission, and the twelfth DCI format and the fourteenth DCI format are used for scheduling downlink transmission;

The processing unit is configured to adopt at least one of the following ways to make the eleventh DCI format, the twelfth DCI format, the thirteenth DCI format, and the fourteenth DCI format valid The payload size is equal to the second payload size, and the second payload size is the payload size of the DCI format with the largest payload size in the twelfth DCI format and the fourteenth DCI format,

If the payload size of the twelfth DCI format is smaller than the second payload size, fill in zeros in the twelfth DCI format;

If the payload size of the fourteenth DCI format is smaller than the second payload size, fill in zeros in the fourteenth DCI format;

If the payload size of the eleventh DCI format is smaller than the second payload size, fill in zeros in the eleventh DCI format;

If the payload size of the eleventh DCI format is greater than the second payload size, truncating in the eleventh DCI format;

If the payload size of the thirteenth DCI format is smaller than the second payload size, fill in zeros in the thirteenth DCI format;

If the payload size of the thirteenth DCI format is larger than the second payload size, truncation is performed in the thirteenth DCI format.
The device according to any one of claims 13-18, wherein:

The first DCI format includes the eleventh DCI format and the twelfth DCI format configured in the search space CSS common to the cell,

The second DCI format includes a thirteenth DCI format and a fourteenth DCI format configured in the CSS,

Wherein, the eleventh DCI format and the thirteenth DCI format are used for scheduling uplink transmission, and the twelfth DCI format and the fourteenth DCI format are used for scheduling downlink transmission;

The processing unit is configured to adopt at least one of the following methods to make the payload size of the twelfth DCI format equal to the payload size of the eleventh DCI format and the validity of the thirteenth DCI format The payload size is equal to the payload size of the fourteenth DCI format:

When the payload size of the eleventh DCI format is greater than the payload size of the twelfth DCI format, truncating in the eleventh DCI format;

When the payload size of the eleventh DCI format is smaller than the payload size of the twelfth DCI format, fill zeros in the eleventh DCI format;

When the payload size of the thirteenth DCI format is greater than the payload size of the fourteenth DCI format, truncating in the thirteenth DCI format;

When the payload size of the thirteenth DCI format is smaller than the payload size of the fourteenth DCI format, zeros are filled in the thirteenth DCI format.
The apparatus according to claim 19 or 20, wherein the processing unit is further configured to perform at least one of the following methods after determining that the number of DCI formats with different payload sizes is greater than or equal to a preset threshold:

Determining the payload size of the seventh DCI format and the eighth DCI format based on the initial BWP configuration included in the first configuration information or the CORESET configuration with the smallest index in the CORESET group included in the first configuration information;

Determining the payload size of the ninth DCI format and the tenth DCI format based on the initial BWP configuration included in the second configuration information or the CORESET configuration with the smallest index in the CORESET group included in the second configuration information;

The processing unit is further configured to adopt the following manner to make the payload size of the seventh DCI format, the eighth DCI format, the ninth DCI format, and the tenth DCI format equal to the third payload size , The third payload size is the payload size of the DCI format with the largest payload size in the eighth DCI format and the tenth DCI format,

If the payload size of the eighth DCI format is smaller than the third payload size, fill in zeros in the eighth DCI format;

If the payload size of the tenth DCI format is smaller than the third payload size, fill in zeros in the tenth DCI format;

If the payload size of the seventh DCI format is smaller than the third payload size, fill in zeros in the seventh DCI format;

If the payload size of the seventh DCI format is greater than the third payload size, truncating in the seventh DCI format;

If the payload size of the ninth DCI format is smaller than the third payload size, fill in zeros in the ninth DCI format;

If the payload size of the ninth DCI format is larger than the third payload size, truncation is performed in the ninth DCI format.
The apparatus according to claim 19, wherein the processing unit is further configured to determine that the number of DCI formats with different payload sizes is greater than or equal to a preset threshold, and then adopt the following method to make the seventh DCI format The payload size of the ninth DCI format, the eighth DCI format, and the tenth DCI format is equal to the second payload size:

The seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format are truncated or filled with zeros, respectively.
The device according to claim 19, wherein the processing unit is further configured to determine that the number of DCI formats with different payload sizes is greater than or equal to a preset threshold, and then adopt at least one of the following methods to make all The payload size of the seventh DCI format, the ninth DCI format, the eighth DCI format, and the tenth DCI format is equal to the second payload size:

Determine the seventh DCI format, the ninth DCI format, and the eighth DCI format based on the initial BWP configuration included in the first configuration information or the CORESET configuration with the smallest index in the CORESET group included in the first configuration information And the payload size of the tenth DCI format; or,

Determine the seventh DCI format, the ninth DCI format, and the eighth DCI format based on the initial BWP configuration included in the second configuration information or the CORESET configuration with the smallest index in the CORESET group included in the second configuration information And the payload size of the tenth DCI format.
The apparatus according to any one of claims 20-23, wherein the third DCI format is a DCI format format 1_1 configured in the USS indicated by the first configuration information;

The fourth DCI format is the DCI format format 0_1 configured in the USS indicated by the first configuration information;

The fifth DCI format is the DCI format format 1_1 configured in the USS indicated by the second configuration information;

The sixth DCI format is the DCI format format 0_1 configured in the USS indicated by the second configuration information;

The seventh DCI format is the DCI format format 0_0 configured in the USS indicated by the first configuration information;

The eighth DCI format is the DCI format format 1_0 configured in the USS indicated by the first configuration information;

The ninth DCI format is the DCI format format 0_0 configured in the USS indicated by the second configuration information;

The tenth DCI format is the DCI format format 1_0 configured in the USS indicated by the second configuration information;

The eleventh DCI format is the DCI format format 0_0 configured in the CSS indicated by the first configuration information;

The twelfth DCI format is the DCI format format 1_0 configured in the CSS indicated by the first configuration information;

The thirteenth DCI format is the DCI format format 0_0 configured in the CSS indicated by the second configuration information;

The fourteenth DCI format is the DCI format format 1_0 configured in the CSS indicated by the second configuration information.
A computer-readable storage medium, characterized in that a computer program is stored thereon, and when the computer program is executed by a computer, the computer realizes the method according to any one of claims 1-12.
A computer program product, characterized by comprising: instructions that when the computer program product runs on a computer, cause the computer to execute the method according to any one of claims 1-12.
A communication device, characterized in that it comprises:

A memory and a processor, wherein code and data are stored in the memory, the memory is coupled to the processor, and the processor runs the code in the memory so that the device executes any one of claims 1-12 Methods.
A communication device, characterized in that it comprises:

Processor and communication interface;

The processor communicates with the outside by using the communication interface;

The processor is configured to run a computer program, so that the communication device implements the method according to any one of claims 1-12.