CN111064548B

CN111064548B - Length alignment method of downlink control information, network element, terminal and storage medium

Info

Publication number: CN111064548B
Application number: CN201911420014.8A
Authority: CN
Inventors: 周欢
Original assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Current assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-08-06
Anticipated expiration: 2039-12-31
Also published as: CN111064548A; WO2021135240A1

Abstract

The present disclosure relates to a length alignment method of downlink control information, a network element, a terminal and a storage medium, wherein the method comprises: under the condition that the lengths of at least two downlink control information DCI formats are the same, distinguishing the at least two DCI formats in a filling bit mode, and determining the DCI format of DCI to be sent; and issuing the DCI to be sent. In the embodiment of the disclosure, the number of DCIs that the terminal needs to perform blind detection is reduced by DCI length alignment, and different DCI formats are distinguished by increasing padding bits. Therefore, the number of the DCI lengths can be limited, and the DCI detection performance of the terminal is improved; meanwhile, different DCI formats can be distinguished, and the terminal can conveniently confirm different DCI information.

Description

Length alignment method of downlink control information, network element, terminal and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a length alignment method for downlink control information, a network element, a terminal, and a storage medium.

Background

Downlink Control Information (DCI) may be transmitted in a Common Search Space (CSS) and a terminal-specific search space (USS). Because there are many DCI formats (DCI formats), in order to reduce the complexity of terminal processing, a DCI length number budget (DCI size budget) is set in a New Radio (NR);

in the related art, in order to make the number of DCI lengths (DCI sizes) that a terminal blindly detects in one time-frequency resource not exceed a DCI length number budget, length alignment is performed on DCI formats, and a problem that different DCI formats cannot be distinguished occurs.

Disclosure of Invention

In view of this, the present disclosure provides a length alignment method of downlink control information, a network element, a terminal, and a storage medium.

According to an aspect of the present disclosure, a method for aligning downlink control information length is provided, including:

under the condition that the lengths of at least two DCI formats are the same, distinguishing the at least two DCI formats in a filling bit mode, and determining the DCI format of DCI to be sent;

and issuing the DCI to be sent.

In one possible implementation, the DCI format includes: a first uplink DCI format, a second uplink DCI format, a first downlink DCI format, and a second downlink DCI format.

In a possible implementation manner, the determining the DCI format of the DCI to be transmitted by distinguishing the at least two DCI formats through padding bits when the lengths of the at least two DCI formats are the same includes:

under the condition that the total DCI length number budget is less than or equal to 4 and the DCI length budget scrambled by the cell radio network temporary identifier is less than or equal to 3, if the second uplink DCI format has the same length as the first uplink DCI format and/or the second downlink DCI format has the same length as the first downlink DCI format, the DCI formats with the same length are distinguished in a filling bit mode.

In a possible implementation manner, if the second uplink DCI format has the same length as the first uplink DCI format and/or the second downlink DCI format has the same length as the first downlink DCI format under the condition that the total DCI length number budget is less than or equal to 4 and the DCI length budget scrambled by the cell radio network temporary identifier is less than or equal to 3, distinguishing DCI formats with the same length in a padding bit manner includes:

if the length of the second uplink DCI format is the same as that of the first uplink DCI format, 1bit is added to the first uplink DCI format finally, so that the length of the first uplink DCI format obtained after bit adding processing is different from that of the second uplink DCI format;

and if the length of the second downlink DCI format is the same as that of the first downlink DCI format, adding 1bit to the first downlink DCI format finally, so that the length of the first downlink DCI format obtained after bit adding processing is different from that of the second downlink DCI format.

In a possible implementation manner, if the second uplink DCI format has the same length as the first uplink DCI format and/or the second downlink DCI format has the same length as the first downlink DCI format under the condition that the total DCI length number budget is less than or equal to 4 and the DCI length budget scrambled by the cell radio network temporary identifier is less than or equal to 3, distinguishing different DCI formats by padding bits for the DCI format includes:

if the length of the second uplink DCI format is the same as that of the first uplink DCI format, adding 1bit to the second uplink DCI format finally, so that the length of the second uplink DCI format obtained after bit adding processing is different from that of the first uplink DCI format;

if the second downlink DCI format is the same as the first downlink DCI format in length, adding 1bit to the second downlink DCI format at last, so that the length of the second downlink DCI format obtained after bit addition processing is different from that of the first downlink DCI format.

In a possible implementation manner, under the condition that the lengths of at least two DCI formats are the same, the at least two DCI formats are distinguished in a padding bit manner, and a DCI format of DCI to be transmitted is determined; the method comprises the following steps:

under the condition that the lengths of the second uplink DCI format and the second downlink DCI format are aligned, if the length of the second uplink DCI format or the second downlink DCI format is equal to the length of the first uplink DCI format and/or the length of the first downlink DCI format, the DCI formats with the same length are distinguished in a filling bit mode.

In a possible implementation manner, if the length of the second uplink DCI format or the second downlink DCI format is equal to the length of the first uplink DCI format and/or the length of the first downlink DCI format is aligned with the length of the second uplink DCI format, distinguishing DCI formats with the same length in a padding bit manner includes:

if the second uplink DCI format or the second downlink DCI format length is equal to the first uplink DCI format length and/or the first downlink DCI format length, 1bit is added to both the second uplink DCI format and the second downlink DCI format.

if the length of the second uplink DCI format or the second downlink DCI format is the same as the length of the first uplink DCI format, adding 1bit in the first uplink DCI format;

and if the length of the second uplink DCI format or the second downlink DCI format is the same as that of the first downlink DCI format, adding 1bit to the first downlink DCI format.

In a possible implementation manner, if the length of the second uplink DCI format or the second downlink DCI format is equal to the length of the first uplink DCI format, and/or is equal to the length of the first downlink DCI format, distinguishing DCI formats with the same length by using padding bits, further includes:

if the length of the first uplink DCI format is smaller than that of the first downlink DCI format, filling 1bit in the first uplink DCI format; deleting 1bit filled in the second downlink DCI format and the first uplink DCI format;

if the length of the first uplink DCI format is greater than that of the first downlink DCI format, filling 1bit in the first downlink DCI format; deleting 1bit filled in the second downlink DCI format and the first downlink DCI format.

In one possible implementation, the method further includes:

and configuring indexes corresponding to the DCI formats into 2 bits, and distinguishing different DCI formats.

According to another aspect of the present disclosure, a method for aligning downlink control information length is provided, including:

receiving downlink control information DCI;

performing blind detection processing on the DCI format;

and under the condition that the lengths of at least two DCI formats are the same, distinguishing the at least two DCI formats in a padding bit mode.

According to another aspect of the present disclosure, there is provided a network element device, including:

the padding bit module is used for distinguishing the at least two DCI formats in a padding bit mode under the condition that the lengths of the at least two DCI formats are the same, and determining the DCI format of DCI to be sent;

and the issuing module is used for issuing the DCI format to be sent.

According to another aspect of the present disclosure, there is provided a terminal device including:

a receiving module, configured to receive a downlink control information DCI format;

a blind detection module, configured to perform blind detection processing on the DCI format;

under the condition that the lengths of at least two downlink control information DCI formats are the same, distinguishing the at least two DCI formats in a filling bit mode.

According to another aspect of the present disclosure, there is provided a network element device, including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to perform the above method.

According to another aspect of the present disclosure, there is provided a terminal device including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to perform the above method.

According to another aspect of the present disclosure, there is provided a non-transitory computer readable storage medium having computer program instructions stored thereon, wherein the computer program instructions, when executed by a processor, implement the above-described method.

In the embodiment of the disclosure, the number of DCIs that the terminal needs to perform blind detection is reduced by DCI length alignment, and different DCI formats are distinguished by increasing padding bits. Therefore, the number of the DCI lengths can be limited, and the DCI detection performance of the terminal is improved; meanwhile, different DCI formats can be distinguished, and the terminal can conveniently confirm different DCI information.

Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.

Fig. 1 illustrates a schematic structural diagram of a mobile communication system according to an embodiment of the present disclosure;

fig. 2 shows a flowchart of a downlink control information length alignment method according to an embodiment of the present disclosure;

fig. 3 shows a flowchart of a downlink control information length alignment method according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a network element device for length alignment of downlink control information according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a terminal device for length alignment of downlink control information according to an embodiment of the present disclosure;

fig. 6 shows a block diagram of a terminal device for downlink control information length alignment according to an embodiment of the present disclosure;

fig. 7 is a block diagram of a network element device for length alignment of downlink control information according to an embodiment of the present disclosure.

Detailed Description

Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present disclosure.

Various DCI formats are defined in the Rel-15 NR system, for example: DCI formats such as DCI format 0_0 (different lengths of the common search space and the terminal-specific search space), DCI format 0_1, DCI format 1_0 (different lengths of the common search space and the terminal-specific search space), DCI format 1_1, DCI format 2_0, DCI format 2_1, DCI format 2_2, and DCI format 2_ 3. Thus, the number of DCI lengths that the terminal blindly detects in one time frequency resource (e.g. slot) exceeds the number of DCI size tiles due to more DCI formats. For example: rel15 requires that the DCI size budget is 4 and the DCI size budget scrambled by a Cell-Radio Network Temporary Identifier (C-RNTI) is 3; if DCI with 5 lengths is configured in one slot, that is, DCI size budget is exceeded, the solution is to align the lengths of DCI format 0_0 and DCI format 1_0 in the common search space with the lengths of DCI format 0_0 and DCI format 1_0 in the terminal-specific search space.

Two new DCI formats, namely DCI format 1_2 and DCI format 0_2, are introduced into the problem of high-reliability low-latency communication (URLLC) of NR Rel-16, and in order to avoid the increase of DCI blind detection complexity, the DCI size bucket is not changed, namely the total DCI size bucket is less than or equal to 4 and the DCI size bucket scrambled by the C-RNTI is less than or equal to 3; and it has been determined that if the DCI size budget is exceeded, DCI format 1_2 and DCI format 0_2 may be aligned (see step 141 below), and if the DCI size budget is still exceeded, DCI format 1_1 and DCI format 0_1 may be further aligned (see step 142 below); the specific procedure of DCI length alignment in the related art is as follows:

step 100, the DCI format 1_0 of the common search space and the DCI format 0_0 of the common search space are length-aligned.

Determining the lengths of a temporary DCI format 1_0 of a terminal-specific search space and a DCI format 0_0 of the terminal-specific search space according to the number of Physical Resource Blocks (PRBs) in a current active Bandwidth part (BWP);

aligning a terminal-specific search space DCI format 0_0 of an auxiliary uplink (SUL) carrier with a terminal-specific search space DCI format 0_0 of an Uplink (UL) carrier;

the length of the temporary terminal-specific search space DCI format 1_0 and the terminal-specific search space DCI format 0_ 0.

Step 120, aligning the length of the DCI format 0_1 of the terminal specific search space of the SUL carrier with the length of the DCI format 0_1 of the terminal specific search space on the UL carrier;

if the DCI format 0_1 is the same as the DCI format 0_0 in the terminal-specific search space, 1bit is added to the DCI format 0_1 to make the DCI format 0_1 and the DCI format 0_0 different in length; if the DCI format 1_1 and the terminal-specific search space DCI format 1_0 have the same length, 1bit is added to the DCI format 1_1 to make the two lengths different.

Step 121, aligning the length of the DCI format 0_2 of the terminal specific search space of the SUL carrier with the length of the DCI format 0_2 of the terminal specific search space on the UL carrier;

if the DCI format 0_2 is the same as the DCI format 0_0 of the terminal-specific search space, 1bit is added to the DCI format 0_2 to make the DCI format 0_2 and the DCI format 0_0 different in length; if the DCI format 1_2 and the terminal-specific search space DCI format 1_0 have the same length, 1bit is added to the DCI format 1_2 to make the two lengths different.

Step 130, if the current total DCI size bucket is less than or equal to 4 and the DCI size bucket scrambled by the C-RNTI is less than or equal to 3, taking the lengths of the temporary DCI format 1_0 and the terminal specific search space DCI format 0_0 as the length of the final DCI format 1_0, and ending the step; otherwise, the following step 140 is continued.

Step 140: discarding the lengths of the temporary DCI format 1_0 in the terminal-specific search space and the DCI format 0_0 in the terminal-specific search space, and removing the padding 1bit of DCI format 0_1 and DCI format 1_1 in step 120;

the length of the initial downlink BWP or Control resource unit set0 (CORESET 0) is used to determine the terminal-specific search space DCI format 1_0 and terminal-specific search space DCI format 0_0 lengths.

Step 141: the lengths of DCI format 0_2 and DCI format 1_2 are aligned.

Step 142: the lengths of DCI format 0_1 and DCI format 1_1 are aligned.

In the DCI length alignment procedure (step 100 to step 142) in the above-described related art, there are the following problems:

1): if DCI size budget (3+1) is satisfied in step 130, the DCI format 0_2 may have the same length as DCI format 0_1, or DCI format 1_2 may have the same length as DCI format 1_1, and thus the DCI formats having the same length cannot be distinguished.

2): if the length of the aligned DCI format 0_2 and DCI format 1_2 is equal to the DCI format 0_1 length or DCI format 1_1 length after step 141, the DCI formats with the same length cannot be distinguished. For example, if the lengths of DCI format 1_2 and DCI format 0_2 are aligned to M in step 141, if the length of DCI format 1_1 is equal to M, the DCI format 1_1 and DCI format 1_2, and DCI format 1_1 and DCI format 0_2 may not be distinguished; similarly, in step 141, if the lengths of DCI format 1_2 and DCI format 0_2 are both aligned to N, if the length of DCI format 0_1 is equal to N, the DCI format 0_1 and DCI format 1_2, DCI format 0_1 and DCI format 0_2 may not be distinguished.

3): in the process of aligning DCI format 0_1 and DCI format 1_1 in step 142, the padding bits added in step 141 may be affected.

Therefore, to solve the above problems in the related art, the embodiments of the present disclosure provide a technical solution for DCI length alignment, which reduces the number of DCIs that need to be detected by a terminal in a blind manner through DCI length alignment, and distinguishes different DCI formats by increasing padding bits. Therefore, the number of the DCI lengths can be limited, the DCI lengths can meet the DCI blind detection number limitation, and the DCI detection performance of the terminal is improved; meanwhile, different DCI formats can be distinguished, and the terminal can conveniently confirm different DCI information.

Fig. 1 shows a schematic structural diagram of a mobile communication system according to an embodiment of the present disclosure. As shown in fig. 1, the mobile communication system may include: network element device 10 and terminal device 20. The mobile communication system to which the embodiment of the present disclosure is applicable may be a Long Term Evolution (LTE) system, a 5G system, the 5G system is also called a new air interface system, a 4G communication system, a 3G communication system, or a future new various communication systems, for example, 6G, 7G, and the like, which is not limited herein. The disclosed embodiments are also applicable to different network architectures including, but not limited to, relay network architectures, dual link architectures, Vehicle-to-event communication (V2X) architectures, and the like.

The Network element device 10 may be a Base Station (BS), which may also be referred to as a base station device, and is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, a device providing a base station function in a 2G network includes a Base Transceiver Station (BTS), a device providing a base station function in a 3G network includes a node B (NodeB), a device providing a base station function in a 4G network includes an evolved node B (evolved NodeB, eNB), a device providing a base station function in a Wireless Local Area Network (WLAN) is an Access Point (AP), a device providing a base station function in a 5G new Radio is a gbb, and a node B (ng-eNB) that continues to evolve, where the gbb and the terminal communicate with each other by using an NR technique, the ng-eNB and the terminal communicate with each other by using an E-utra (E Universal Radio access) technique, and both the gbb and the ng-eNB may be connected to the 5G core network; the base station in the embodiments of the present disclosure also includes an apparatus and the like that provide a base station function in a future new communication system.

The base station controller in the embodiments of the present disclosure is a device for managing a base station, for example, a Base Station Controller (BSC) in a 2G network, a Radio Network Controller (RNC) in a 3G network, and a device for controlling and managing a base station in a future new communication system. The network side network refers to a communication network providing communication services for the terminal, and includes a base station of a radio access network, a base station controller of the radio access network, and a device on the core network side. The Core Network may be an Evolved Packet Core (EPC), a 5G Core Network (5G Core Network), or a new Core Network in a future communication system. The 5G Core Network is composed of a set of devices, and implements Access and Mobility Management functions (AMF) of functions such as Mobility Management, User Plane Functions (UPF) providing functions such as packet routing forwarding and Quality of Service (QoS) Management, Session Management Functions (SMF) providing functions such as Session Management, IP address allocation and Management, and the like. The EPC may be composed of an MME providing functions such as mobility management, Gateway selection, etc., a Serving Gateway (S-GW) providing functions such as packet forwarding, etc., and a PDN Gateway (P-GW) providing functions such as terminal address allocation, rate control, etc.

Terminal equipment 20 may refer to various forms of User Equipment (UE), access terminal equipment, subscriber units, subscriber stations, Mobile Stations (MSs), remote stations, remote terminal equipment, mobile devices, user terminals, terminal equipment (terminal equipment), wireless communication devices, user agents, or user equipment. The terminal device 20 may 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), a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc., which is not limited by the disclosed embodiment.

The embodiment of the disclosure defines a unidirectional communication link from an access network to a terminal device as a downlink, data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called as a downlink direction; the unidirectional communication link from the terminal to the access network is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is referred to as an uplink direction.

It should be noted that, when the mobile communication system shown in fig. 1 adopts a 5G system or a next-generation mobile communication technology system of 5G, the network element devices and the terminal devices may have different names in the 5G system or the next-generation mobile communication technology system of 5G, but have the same or similar functions, and the embodiment of the present disclosure is not limited thereto.

It should be noted that, in the mobile communication system shown in fig. 1, a plurality of network element devices 10 and/or a plurality of terminal devices 20 may be included, and one network element device 10 and one terminal device 20 are illustrated in fig. 1, but the embodiment of the present disclosure does not limit this.

Fig. 2 shows a flowchart of a downlink control information length alignment method according to an embodiment of the present disclosure; as shown in fig. 2, the method is used in the network element device 10 of the mobile communication system shown in fig. 1, and may include the following steps:

step 200, under the condition that the lengths of at least two downlink control information DCI formats are the same, the network element equipment distinguishes the at least two DCI formats in a filling bit mode and determines the DCI format of DCI to be sent;

step 210, the network element device issues the DCI to be sent.

In the embodiment of the present disclosure, in the process of aligning the DCI length, the network Element device may distinguish different DCI formats in a padding bit manner, and send the DCI to be sent on a Physical Downlink Control Channel (PDCCH) in the form of one or more Control Channel Elements (CCEs). Wherein, the DCI format may include: a first uplink DCI format, a second uplink DCI format, a first downlink DCI format, and a second downlink DCI format.

In a possible implementation manner, the network element device may perform DCI length alignment operation under the condition that two new DCI formats are introduced into the NR Rel-16 URLLC topic, and may distinguish different DCI formats in a manner of padding bits; wherein the new DCI format comprises: DCI format 0_2 for scheduling an uplink traffic channel and DCI format 1_2 for scheduling a downlink traffic channel; illustratively, the first uplink DCI format is: DCI format 0_1, and the second uplink DCI format is: DCI format 0_2, the first downlink DCI format is: DCI format 1_1, and the second downlink DCI format is: DCI format 1_ 2.

Based on this, aiming at the above problem 1 occurring in the process of performing DCI length alignment in the related art, the embodiment of the present disclosure discloses a technical scheme for distinguishing different DCI formats by padding bits;

in a possible implementation manner, under the condition that the total DCI length number budget is less than or equal to 4 and the DCI length budget scrambled by the C-RNTI is less than or equal to 3, if the second uplink DCI format has the same length as the first uplink DCI format and/or the second downlink DCI format has the same length as the first downlink DCI format, the DCI formats having the same length are distinguished in a padding bit manner.

In the embodiment of the present disclosure, when one of the following three conditions a, b, and c occurs, DCI formats with the same length are distinguished by padding bits. A, the second uplink DCI format has the same length as the first uplink DCI format; b. the second downlink DCI format is the same length as the first downlink DCI format; c. the second uplink DCI format has the same length as the first uplink DCI format, and the second downlink DCI format has the same length as the first downlink DCI format. It should be noted that, the manner of padding bits in the embodiment of the present disclosure may include two manners: filling the second uplink DCI format with 1bit, and filling the second downlink DCI format with 1 bit; or adding 1bit to fill in the first uplink DCI format and adding 1bit to fill in the first downlink DCI format. Preferably, a mode of adding 1bit padding to the second uplink DCI format and adding 1bit padding to the second downlink DCI format is adopted.

In a possible implementation manner, if the length of the second uplink DCI format is the same as that of the first uplink DCI format, 1bit is added to the first uplink DCI format, so that the length of the first uplink DCI format obtained after bit addition processing is different from that of the second uplink DCI format; and if the length of the second downlink DCI format is the same as that of the first downlink DCI format, adding 1bit to the first downlink DCI format finally, so that the length of the first downlink DCI format obtained after bit adding processing is different from that of the second downlink DCI format.

For example, based on the DCI length alignment procedure in the related art (step 100-step 142), a new DCI length alignment procedure is obtained as follows: step 100-step 120, step 121A, step 130-step 142;

wherein step 121A comprises:

aligning the length of the terminal specific search space DCI format 0_2 of the SUL carrier with the length of the terminal specific search space DCI format 0_2 on the UL carrier;

if the DCI format 0_2 is the same as the DCI format 0_0 of the terminal-specific search space, 1bit is added to the DCI format 0_2 to make the DCI format 0_2 and the DCI format 0_0 different in length; if the length of the DCI format 1_2 is the same as that of the DCI format 1_0 of the terminal-specific search space, 1bit is added to the DCI format 1_2 finally to ensure that the length of the DCI format 1_2 is different from that of the terminal-specific search space;

if the length of the DCI format 0_2 is the same as that of the DCI format 0_1, 1bit is added to the DCI format 0_1 finally to ensure that the length of the DCI format 0_2 is different from that of the DCI format 0_ 1; if the length of DCI format 1_2 is the same as that of DCI format 1_1, 1bit is added to DCI format 1_1 to make the two lengths different.

In a possible implementation manner, if the length of the second uplink DCI format is the same as that of the first uplink DCI format, 1bit is added to the second uplink DCI format, so that the length of the second uplink DCI format obtained after bit addition processing is different from that of the first uplink DCI format; if the second downlink DCI format is the same as the first downlink DCI format in length, adding 1bit to the second downlink DCI format at last, so that the length of the second downlink DCI format obtained after bit addition processing is different from that of the first downlink DCI format.

For example, based on the DCI length alignment procedure in the related art (step 100-step 142), a new DCI length alignment procedure is obtained as follows: step 100-step 120, step 121B, step 130-step 142;

wherein step 121B comprises:

aligning the length of a terminal specific search space DCI format 0_2 of an SUL (auxiliary uplink) carrier with the length of a terminal specific search space DCI format 0_2 on an UL carrier;

if the length of the DCI format 0_2 is the same as that of the DCI format 0_1, 1bit is added to the DCI format 0_2 finally to ensure that the length of the DCI format 0_2 is different from that of the DCI format 0_ 1; if the length of DCI format 1_2 is the same as that of DCI format 1_1, 1bit is added to DCI format 1_2 to make the two lengths different.

Based on this, aiming at the above problem 2) occurring in the DCI length alignment process in the related art, the embodiment of the present disclosure discloses a technical scheme for distinguishing different DCI formats by padding bits;

in a possible implementation manner, under the condition that the lengths of the second uplink DCI format and the second downlink DCI format are aligned, if the length of the second uplink DCI format or the second downlink DCI format is equal to the length of the first uplink DCI format and/or the length of the first downlink DCI format, DCI formats with the same length are distinguished in a padding bit manner.

In the embodiment of the present disclosure, when one of the following three conditions d, e, and f occurs, DCI formats with the same length are distinguished by padding bits. D, the length of the second uplink DCI format (or the second downlink DCI format) is equal to the length of the first uplink DCI format; e. the length of the second uplink DCI format (or the second downlink DCI format) is equal to the length of the first downlink DCI format; f. the second uplink DCI format (or second downlink DCI format) length is equal to the first uplink DCI format length and equal to the first downlink DCI format length. It should be noted that, the manner of padding bits in the embodiment of the present disclosure may include two manners: filling the second uplink DCI format and the second downlink DCI format with 1 bit; or adding 1bit to fill in the first uplink DCI format and adding 1bit to fill in the first downlink DCI format. Preferably, a mode of adding 1bit padding to both the second uplink DCI format and the second downlink DCI format is adopted.

In a possible implementation manner, under the condition that the lengths of the second uplink DCI format and the second downlink DCI format are aligned, if the length of the second uplink DCI format or the second downlink DCI format is equal to the length of the first uplink DCI format and/or the length of the first downlink DCI format, 1bit is added to both the second uplink DCI format and the second downlink DCI format finally.

For example, based on the DCI length alignment procedure in the related art (step 100-step 142) or the DCI length alignment procedure (step 100-step 120, step 121A (or 121B), step 130-step 142), a new DCI length alignment procedure is obtained as follows: step 100-step 120, step 121 (or 121A, or 121B), step 130-step 140, step 141A, step 142;

wherein step 141A comprises:

aligning the lengths of DCI format 0_2 and DCI format 1_ 2;

if the length of the aligned DCI format 0_2 and DCI format 1_2 is the same as the length of DCI format 0_1 or the same as the length of DCI format 1_1, 1bit is added to both DCI format 0_2 and DCI format 1_2 to make them different.

In a possible implementation manner, under the condition that the lengths of the second uplink DCI format and the second downlink DCI format are aligned, if the length of the second uplink DCI format or the second downlink DCI format is the same as the length of the first uplink DCI format, 1bit is added to the first uplink DCI format finally; and if the length of the second uplink DCI format or the second downlink DCI format is the same as that of the first downlink DCI format, adding 1bit to the first downlink DCI format.

For example, based on the DCI length alignment procedure in the related art (step 100-step 142) or the DCI length alignment procedure (step 100-step 120, step 121A (or 121B), step 130-step 142), a new DCI length alignment procedure is obtained as follows: step 100-step 120, step 121 (or 121A, or 121B), step 130-step 140, step 141B, step 142;

wherein step 141B comprises:

aligning the lengths of DCI format 0_2 and DCI format 1_ 2;

if the length of the aligned DCI format 0_2 and DCI format 1_2 is the same as the length of DCI format 0_1, adding 1bit to DCI format 0_1 to make the lengths different;

if the aligned length of DCI format 0_2 and DCI format 1_2 is the same as the length of DCI format 1_1, 1bit is added to DCI format 1_1 to make the lengths different.

Thus, after the uplink and downlink DCI lengths (i.e., DCI format 0_2 and DCI format 1_2) are aligned, it is ensured that the aligned length is different from any non-fallback DCI length (i.e., DCI format 0_1 and DCI format 1_ 1).

Based on this, aiming at the above problem 3) occurring in the DCI length alignment process in the related art, the embodiment of the present disclosure discloses a technical scheme for distinguishing different DCI formats by padding bits;

in a possible implementation manner, if the length of the first uplink DCI format is smaller than the length of the first downlink DCI format, 1bit is filled in the first uplink DCI format at last; deleting 1bit filled in the second downlink DCI format and the first uplink DCI format; if the length of the first uplink DCI format is greater than that of the first downlink DCI format, filling 1bit in the first downlink DCI format; deleting 1bit filled in the second downlink DCI format and the first downlink DCI format.

In the embodiment of the present disclosure, considering that the padding bits added in the above steps (step 141A, step 141B) may be affected by the process of aligning DCI format 0_1 and DCI format 1_1, therefore, if the length after DCI format 0_2 and DCI format 1_2 are aligned in the above step 141A or step 141B is the same as the length of DCI format 0_1, but DCI format 0_1 in step 142 is aligned with DCI format 1_1 (i.e. the length of DCI format 0_1 is smaller than the length of DCI format 1_1), the padding bits are added to another length, and at this time, 1-bit padding in the above step 141A or step 141B may be removed. Accordingly, if the length after the alignment of DCI format 0_2 and DCI format 1_2 in step 141A or step 141B is the same as the length of DCI format 1_1, but the DCI format 1_1 in step 142 adds padding bits to another length for the alignment with DCI format 0_1, then the 1-bit padding in step 141A or step 141B is removed.

For example, based on the DCI length alignment procedure in the related art (step 100-step 142) or the DCI length alignment procedure (step 100-step 120, step 121A (or 121B), step 130-step 140, step 141A (or 141B), step 142), a new DCI length alignment procedure is obtained as follows: step 100-step 120, step 121 (or 121A, or 121B), step 130-step 140, step 141A (or 141B), step 142A;

wherein step 142A comprises:

if the length of DCI format 0_1 is smaller than that of DCI format 1_1, filling bits are added at the end of DCI format 0_1 to make the lengths of the two bits the same; and the 1bit padding added by the DCI format 1_2 and the DCI format 1_1 due to the same length as the DCI0_1 is removed;

if the length of DCI format 0_1 is greater than that of DCI format 1_1, filling bits are added at the end of DCI format 1_1 to make the lengths of the two bits the same; and removes the 1-bit padding added to DCI format 1_2 and DCI format 1_1 due to the same length as DCI1_ 1.

In addition, aiming at the above problems 1) -3) occurring in the process of performing DCI length alignment in the related art, the embodiment of the present disclosure discloses a technical scheme of index configuration;

in one possible implementation, the method further includes: and configuring the Index corresponding to the DCI format as 2 bits, and distinguishing different DCI formats.

Exemplarily, table 1 is a DCI format index table, and as shown in table 1, if DCI format 1_1, DCI format 1_2, DCI format 0_1, and DCI format 0_2 are configured at the same time, whether DCI format 1_1, DCI format 1_2, DCI format 0_1, and DCI format 0_2 are downlink or uplink is distinguished by using a 2-bit index, so that the above-mentioned problems 1) -3 occurring in the related art can be avoided).

Table 1 DCI format index table

Index	DCI format
		00	DCI 0_1
01	DCI 1_1
		10	DCI 0_2
11	DCI 1_2

It should be noted that, although the downlink control information length alignment method is described as above by taking the above embodiment as an example, those skilled in the art can understand that the disclosure should not be limited thereto. In fact, the user can flexibly set each implementation mode according to personal preference and/or actual application scene, as long as the technical scheme of the disclosure is met.

In this way, in the embodiment of the present disclosure, the number of DCI which needs to be blind-checked by the terminal is reduced by DCI length alignment, and different DCI formats are distinguished by increasing padding bits. Therefore, the number of the DCI lengths can be limited, the DCI lengths can meet the DCI blind detection number limitation, and the DCI detection performance of the terminal is improved; meanwhile, different DCI formats can be distinguished, and the terminal can conveniently confirm different DCI information.

Fig. 3 shows a flowchart of a downlink control information length alignment method according to an embodiment of the present disclosure; as shown in fig. 3, the method is used in the terminal device 20 of the mobile communication system shown in fig. 1, and may include the steps of:

step 300, the terminal equipment receives downlink control information DCI;

step 310, the terminal equipment performs blind detection processing on the DCI format;

Wherein the DCI format comprises: a first uplink DCI format, a second uplink DCI format, a first downlink DCI format, and a second downlink DCI format.

In the embodiment of the disclosure, the terminal device receives the DCI sent by the network element device, and performs corresponding blind detection according to a certain rule. Thus, the DCI detection performance of the terminal equipment can be effectively improved; meanwhile, the terminal equipment can confirm different DCI information conveniently.

Fig. 4 is a schematic structural diagram of a network element device for length alignment of downlink control information according to an embodiment of the present disclosure; as shown in fig. 4, the network element device may include: a padding bit module 41, configured to distinguish, in a padding bit manner, at least two downlink control information DCI formats when the DCI formats are the same in length, and determine a DCI format of DCI to be transmitted; and an issuing module 42, configured to issue the DCI format to be sent.

In one possible implementation, the pad bit module 41 includes: a first padding bit unit, configured to distinguish DCI formats with the same length in a padding bit manner if the second uplink DCI format has the same length as the first uplink DCI format and/or the second downlink DCI format has the same length as the first downlink DCI format when a total DCI length number budget is less than or equal to 4 and a DCI length budget scrambled by a cell radio network temporary identifier is less than or equal to 3.

In a possible implementation manner, the first padding bit unit is specifically configured to: if the length of the second uplink DCI format is the same as that of the first uplink DCI format, 1bit is added to the first uplink DCI format finally, so that the length of the first uplink DCI format obtained after bit adding processing is different from that of the second uplink DCI format; and if the length of the second downlink DCI format is the same as that of the first downlink DCI format, adding 1bit to the first downlink DCI format finally, so that the length of the first downlink DCI format obtained after bit adding processing is different from that of the second downlink DCI format.

In a possible implementation manner, the first padding bit unit is specifically configured to: if the length of the second uplink DCI format is the same as that of the first uplink DCI format, adding 1bit to the second uplink DCI format finally, so that the length of the second uplink DCI format obtained after bit adding processing is different from that of the first uplink DCI format; if the second downlink DCI format is the same as the first downlink DCI format in length, adding 1bit to the second downlink DCI format at last, so that the length of the second downlink DCI format obtained after bit addition processing is different from that of the first downlink DCI format.

In a possible implementation manner, the pad bit module 41 further includes: and a second padding bit unit, configured to, when the lengths of the second uplink DCI format and the second downlink DCI format are aligned, distinguish, in a padding bit manner, DCI formats with the same length if the length of the second uplink DCI format or the second downlink DCI format is equal to the length of the first uplink DCI format and/or the length of the first downlink DCI format.

In a possible implementation manner, the second padding bit unit is specifically configured to: if the second uplink DCI format or the second downlink DCI format length is equal to the first uplink DCI format length and/or the first downlink DCI format length, 1bit is added to both the second uplink DCI format and the second downlink DCI format.

In a possible implementation manner, the second padding bit unit is specifically configured to: if the length of the second uplink DCI format or the second downlink DCI format is the same as the length of the first uplink DCI format, adding 1bit in the first uplink DCI format; and if the length of the second uplink DCI format or the second downlink DCI format is the same as that of the first downlink DCI format, adding 1bit to the first downlink DCI format.

In a possible implementation manner, the second padding bit unit is further configured to: if the length of the first uplink DCI format is smaller than that of the first downlink DCI format, filling 1bit in the first uplink DCI format; deleting 1bit filled in the second downlink DCI format and the first uplink DCI format; if the length of the first uplink DCI format is greater than that of the first downlink DCI format, filling 1bit in the first downlink DCI format; deleting 1bit filled in the second downlink DCI format and the first downlink DCI format.

In a possible implementation manner, the network element device further includes: and the index configuration module is used for configuring the index corresponding to the DCI format into 2 bits and distinguishing different DCI formats.

Fig. 5 is a schematic structural diagram of a terminal device for length alignment of downlink control information according to an embodiment of the present disclosure; as shown in fig. 5, the terminal device may include:

a receiving module 51, configured to receive a downlink control information DCI format;

a blind detection module 52, configured to perform blind detection processing on the DCI format;

Fig. 6 shows a block diagram of a terminal device 600 for downlink control information length alignment according to an embodiment of the present disclosure. Referring to fig. 6, the terminal device 600 may include one or more of the following components: processing component 602, memory 604, power component 606, multimedia component 608, audio component 610, input/output (I/O) interface 612, sensor component 614, and communication component 616.

The processing component 602 generally controls overall operations of the terminal device 600, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 602 may include one or more processors 620 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 602 can include one or more modules that facilitate interaction between the processing component 602 and other components. For example, the processing component 602 can include a multimedia module to facilitate interaction between the multimedia component 608 and the processing component 602.

The memory 604 is configured to store various types of data to support operation at the terminal device 600. Examples of such data include instructions for any application or method operating on the terminal device 600, contact data, phonebook data, messages, pictures, videos, and the like. The memory 604 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

The power supply component 606 provides power to the various components of the terminal device 600. The power components 606 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the terminal device 600.

The multimedia component 608 comprises a screen providing an output interface between the terminal device 600 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 608 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the terminal device 600 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 610 is configured to output and/or input audio signals. For example, the audio component 610 includes a Microphone (MIC) configured to receive an external audio signal when the terminal device 600 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 604 or transmitted via the communication component 616. In some embodiments, audio component 610 further includes a speaker for outputting audio signals.

The I/O interface 612 provides an interface between the processing component 602 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor component 614 includes one or more sensors for providing various aspects of status assessment for the terminal device 600. For example, the sensor component 614 may detect an open/closed state of the terminal device 600, relative positioning of components such as a display and keypad of the terminal device 600, a change in position of the terminal device 600 or a component of the terminal device 600, presence or absence of user contact with the terminal device 600, orientation or acceleration/deceleration of the terminal device 600, and a change in temperature of the terminal device 600. The sensor assembly 614 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 614 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 614 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 616 is configured to facilitate communications between the terminal device 600 and other devices in a wired or wireless manner. The terminal device 600 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 616 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 616 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the terminal device 600 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer readable storage medium, such as the memory 604, is also provided, including computer program instructions executable by the processor 620 of the terminal device 600 to perform the above-described method.

Fig. 7 shows a block diagram of a network element device 1900 for length alignment of downlink control information according to an embodiment of the present disclosure. For example, eNB in LTE system, gNB in 5G system, etc. Referring to fig. 7, network element device 1900 includes a processing component 1922 further including one or more processors and memory resources, represented by memory 1932, for storing instructions, e.g., applications, executable by processing component 1922. The application programs stored in memory 1932 may include one or more modules that each correspond to a set of instructions. Further, the processing component 1922 is configured to execute instructions to perform the above-described method.

Network element device 1900 may also include a power component 1926 configured to perform power management of network element device 1900, a wired or wireless network interface 1950 configured to connect network element device 1900 to a network, and an input output (I/O) interface 1958. The network element device 1900 may operate based on an operating system, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like, stored in memory 1932.

In an exemplary embodiment, a non-transitory computer readable storage medium, such as the memory 1932, is also provided that includes computer program instructions executable by the processing component 1922 of the apparatus 1900 to perform the above-described methods.

The present disclosure may be systems, methods, and/or computer program products. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the present disclosure.

The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.

The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.

The computer program instructions for carrying out operations of the present disclosure may be assembler instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry that can execute the computer-readable program instructions implements aspects of the present disclosure by utilizing the state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA).

Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.

These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.

The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A downlink control information length alignment method is applied to a base station using a new air interface NR technology, and is characterized by comprising the following steps:

under the condition that the lengths of at least two downlink control information DCI formats are the same, distinguishing the at least two DCI formats in a filling bit mode, and determining the DCI format of DCI to be sent;

issuing the DCI to be sent;

the DCI format comprises: a first uplink DCI format, a second uplink DCI format, a first downlink DCI format, and a second downlink DCI format;

under the condition that the lengths of the at least two DCI formats are the same, distinguishing the at least two DCI formats in a filling bit mode, and determining the DCI format of DCI to be sent; the method comprises the following steps:

under the condition that the lengths of the second uplink DCI format and the second downlink DCI format are aligned, if the length of the second uplink DCI format or the second downlink DCI format is equal to the length of the first uplink DCI format and/or the length of the first downlink DCI format, adding 1bit to both the second uplink DCI format and the second downlink DCI format; or the like, or, alternatively,

if the length of the second uplink DCI format or the second downlink DCI format is the same as the length of the first downlink DCI format, adding 1bit in the first downlink DCI format;

the method further comprises the following steps:

if the length of the first uplink DCI format is greater than that of the first downlink DCI format, filling 1bit in the first downlink DCI format; deleting 1bit filled in the second downlink DCI format and the first downlink DCI format;

the second uplink DCI format and the second downlink DCI format are newly introduced by a new air interface NR evolution standard R-16, the second uplink DCI is used for scheduling an uplink service channel, and the second downlink DCI is used for scheduling a downlink service channel.

2. The method of claim 1, wherein the determining the DCI format of the DCI to be transmitted by distinguishing the at least two DCI formats through padding bits when the at least two DCI formats have the same length comprises:

3. The method according to claim 2, wherein if the second uplink DCI format is the same as the first uplink DCI format in length and/or the second downlink DCI format is the same as the first downlink DCI format in length, distinguishing DCI formats with the same length by padding bits if the total DCI length number budget is less than or equal to 4 and the DCI length budget scrambled by the cell radio network temporary identifier is less than or equal to 3 is satisfied, the method includes:

4. The method according to claim 2, wherein in the case that the total DCI length number budget is less than or equal to 4 and the DCI length budget scrambled by the cell radio network temporary identity is less than or equal to 3, if the second uplink DCI format is the same as the first uplink DCI format length and/or the second downlink DCI format is the same as the first downlink DCI format length, distinguishing different DCI formats by padding bits for the DCI comprises:

5. The method of claim 1, further comprising:

6. A downlink control information length alignment method is applied to a terminal device using a new air interface NR technology, and is characterized by comprising the following steps:

receiving downlink control information DCI; the DCI format comprises: a first uplink DCI format, a second uplink DCI format, a first downlink DCI format, and a second downlink DCI format;

performing blind detection processing on the DCI format;

wherein, in the case that at least two DCI formats have the same length, the at least two DCI formats are distinguished by means of the padding bits of any one of claims 1 to 5;

7. A network element device, wherein the network element device uses a new air interface NR technique, the network element device comprising:

a padding bit module, configured to distinguish at least two downlink control information DCI formats by using padding bits when the DCI formats have the same length, and determine a DCI format of DCI to be transmitted;

the sending module is used for sending the DCI format to be sent;

under the condition that the lengths of the second uplink DCI format and the second downlink DCI format are aligned, if the length of the second uplink DCI format or the second downlink DCI format is equal to the length of the first uplink DCI format and/or the length of the first downlink DCI format, adding 1bit to both the second uplink DCI format and the second downlink DCI format;

under the condition that the lengths of the second uplink DCI format and the second downlink DCI format are aligned, if the length of the second uplink DCI format or the second downlink DCI format is the same as the length of the first uplink DCI format, adding 1bit in the first uplink DCI format; if the length of the second uplink DCI format or the second downlink DCI format is the same as the length of the first downlink DCI format, adding 1bit in the first downlink DCI format;

8. A terminal device, wherein the terminal device uses a new air interface NR technique, the terminal device comprising:

wherein, in case that at least two DCI formats have the same length, the at least two DCI formats are distinguished by means of the padding bits according to any one of claims 1-5.

9. A network element device, wherein the network element device uses a new air interface NR technique, the network element device comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to implement the method of any one of claims 1 to 5 when executing the memory-stored executable instructions.

10. A terminal device, wherein the terminal device uses a new air interface NR technique, the terminal device comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to implement the method of claim 6 when executing the memory-stored executable instructions.

11. A non-transitory computer readable storage medium having computer program instructions stored thereon, wherein the computer program instructions, when executed by a processor, implement the method of any of claims 1 to 6.