CN111262675B

CN111262675B - Method for determining DCI format, terminal equipment and network equipment

Info

Publication number: CN111262675B
Application number: CN201910969733.9A
Authority: CN
Inventors: 曾超君; 沈晓冬; 姜蕾; 贺子健
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2022-07-29
Anticipated expiration: 2039-10-12
Also published as: CN111262675A

Abstract

The embodiment of the invention discloses a method for determining a DCI format, terminal equipment and network equipment, which are used for effectively indicating the DCI format and meeting the DCI Size preset requirement. The method comprises the following steps: aligning the bit number of the DCI to meet the preset requirement; and determining the format of the DCI according to at least one of the bit number of the DCI, an indication field in the DCI, the RNTI or the control resource configuration which meets the preset requirement, so that the format of the DCI can be effectively indicated and the preset requirement of the DCI Size is met.

Description

Method for determining DCI format, terminal equipment and network equipment

Technical Field

The embodiment of the invention relates to the field of communication, in particular to a method for determining a DCI format, terminal equipment and network equipment.

Background

In future communication systems, an Unlicensed Band (Unlicensed Band) may be used as a supplement to a Licensed Band (Licensed Band) to help an operator to expand the capacity of services. Since the unlicensed band is shared by multiple technologies (RATs), such as Wi-Fi, radar, LTE-based Licensed-Assisted Access (LTE-LAA), etc., in some countries or regions, the unlicensed band must be used according to regulatory rules to ensure that all devices can fairly share the resources, such as Listen Before Talk (LBT), Maximum Channel Occupancy Time (MCOT), etc. When a transmission node needs to send information, it is required to perform LBT on a specified wireless channel first, and perform Energy Detection (ED) on the surrounding wireless transmission environment, and when the Energy is lower than a certain threshold, the channel is judged to be idle, and then transmission can be started. Otherwise, the channel is judged to be busy, and the transmission node can not transmit. The transmitting node may be a base station, a UE, a Wi-Fi AP, etc. After the transmission node starts transmission, the occupied channel time cannot exceed the MCOT.

In a New Radio (NR), both uplink and Downlink scheduling DCI (Downlink Control Information) distinguish at least two formats, where a first format may be a Fallback DCI (Fallback DCI) format and a second format may be a non-Fallback DCI (non-Fallback DCI) format. In order to enable DCI to support more functions and distinguish more information, a new DCI format, e.g., a third DCI format, may be introduced, and accordingly, the new DCI format needs to be effectively determined or indicated.

Disclosure of Invention

An object of the embodiments of the present invention is to provide a method, a terminal device, and a network device for determining a DCI format, so as to effectively determine or indicate a new DCI format.

In a first aspect, a method for determining a DCI format is provided, where the method is performed by a terminal device, and the method includes: aligning the bit number of the DCI to enable the bit number of the DCI to meet the preset requirement; and determining a DCI format according to at least one of the bit number of the DCI, an indication field, a Radio Network Temporary Identity (RNTI) or control resource configuration in the DCI, which meets the preset requirement.

In a second aspect, a method for determining a DCI format is provided, where the method is performed by a network device, and the method includes: aligning the bit number of the DCI to enable the bit number of the DCI to meet the preset requirement; indicating a DCI format through at least one of the bit number of the DCI, an indication field in the DCI, an RNTI or a control resource configuration which meet the preset requirement.

In a third aspect, a terminal device is provided, which includes: the alignment module is used for aligning the bit number of the DCI so that the bit number of the DCI meets the preset requirement; and the determining module is used for determining the DCI format according to at least one of the bit number of the DCI, the indication field in the DCI, the RNTI or the control resource configuration which meet the preset requirement.

In a fourth aspect, a network device is provided, the network device comprising: the processing module is used for aligning the bit number of the DCI so that the bit number of the DCI meets the preset requirement; and the indicating module is used for indicating the DCI format through at least one of the bit number of the DCI, an indication domain in the DCI, the RNTI or the control resource configuration which meets the preset requirement.

In a fifth aspect, there is provided a terminal device comprising a processor, a memory and a computer program stored on the memory and operable on the processor, the computer program, when executed by the processor, implementing the steps of a method of determining a DCI format according to the first aspect.

In a sixth aspect, there is provided a network device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of a method of determining a DCI format according to the second aspect.

In a seventh aspect, a computer readable storage medium is provided, on which a computer program is stored, which computer program, when executed by a processor, implements the steps of a method of determining a DCI format according to the first and second aspects.

In the embodiment of the invention, the bit number of the DCI is aligned so as to meet the preset requirement; determining a DCI format according to at least one of the number of bits of the DCI, an indication field in the DCI, an RNTI (radio network temporary identity) or a control resource configuration which meets the preset requirement, wherein the DCI format comprises a first format, a second format and a third format, can effectively indicate the format of the DCI, and meets the preset requirement of the number of bits of the DCI (DCI Size).

Drawings

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

fig. 1 is a schematic flow diagram of a method of determining a DCI format according to one embodiment of the present invention;

fig. 2 is a schematic flow chart of a method of determining a DCI format according to another embodiment of the present invention;

Fig. 3 is a schematic flow chart of a method of determining a DCI format according to another embodiment of the present invention;

FIGS. 4a-4c are schematic diagrams of steps for adjusting bits according to one embodiment of the invention;

FIGS. 5a-5c are schematic diagrams of steps for adjusting bits, according to one embodiment of the invention;

fig. 6 is a schematic flow chart diagram of a method of determining a DCI format according to another embodiment of the present invention;

fig. 7 is a schematic flow chart diagram of a method of determining a DCI format according to another embodiment of the present invention;

fig. 8 is a schematic flow chart diagram of a method of determining a DCI format according to one embodiment of the present invention;

fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

FIG. 10 is a schematic block diagram of a network device according to one embodiment of the invention;

fig. 11 is a schematic configuration diagram of a terminal device according to another embodiment of the present invention;

fig. 12 is a schematic structural diagram of a network device according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. "and/or" in various embodiments of the present specification means at least one of front and rear.

It should be understood that the technical solutions of the embodiments of the present invention may be applied to various communication systems, for example: a Long Term Evolution (LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD) System, a Universal Mobile Telecommunications System (UMTS) or Worldwide Interoperability for Microwave Access (WiMAX) communication System, a 5G System, a New Radio (NR) System, or a subsequent Evolution communication System.

In the embodiment of the present invention, the Terminal device may include, but is not limited to, a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), a Mobile phone (Mobile Telephone), a User Equipment (UE), a handset (handset), a portable device (portable Equipment), a vehicle (vehicle), etc., and the Terminal device may communicate with one or more core networks through a Radio Access Network (RAN), for example, the Terminal device may be a Mobile phone (or referred to as a "cellular" phone), a computer with a wireless communication function, and the Terminal device may also be a portable, pocket, handheld, computer-embedded, or vehicle-mounted Mobile apparatus.

In the embodiment of the present invention, the network device is a device deployed in a radio access network to provide a wireless communication function for a terminal device. The network device may be a base station, and the base station may include various macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different radio access technologies, the names of devices having a base station function may differ. For example, in an LTE network, called an Evolved node B (eNB or eNodeB), in a third Generation (3G) network, called a node B (node B), or a network device in a later Evolved communication system, etc., although the words are not limiting.

As shown in fig. 1, an embodiment of the present invention provides a method 100 for determining a DCI format, which may be performed by a terminal device, in other words, by software or hardware installed in the terminal device, and the method includes the following steps:

s102: and aligning the bit number of the DCI to meet the preset requirement.

In order to control the number of times that the UE blindly detects the PDCCH, the UE may perform a blind detection attempt based on a certain DCI Size in the DCI Size selectable value set by limiting the number of DCI sizes, so as to ensure the complexity of UE implementation. Multiple DCI formats (DCI formats) may share the same DCI Size, and when the restriction on the number of DCI sizes remains unchanged, it is also possible to allow more DCI formats to be introduced as needed without increasing the number of times of blind PDCCH detection by the UE. The number of DCI sizes here is limited, that is, the number of bits of the DCI needs to meet a preset requirement, which may be referred to as a DCI Size budget requirement.

Both the NR uplink and downlink scheduling DCI distinguish between a first format, e.g., a Fallback DCI format, and a second format, e.g., a non-Fallback DCI format. A single NR terminal needs to monitor 4 different DCI sizes at most, where one DCI Size is simultaneously used for an uplink and downlink Fallback DCI format, where a bit number of the uplink Fallback DCI is required to be consistent with a bit number of the downlink Fallback DCI, one DCI Size is used for a non-Fallback downlink scheduling resource allocation indication, and one DCI Size is used for a non-Fallback uplink scheduling resource allocation indication, where unless the bit numbers of the uplink and downlink scheduling non-Fallback resource allocation indications are naturally aligned. In addition, the NR terminal may need to use the fourth DCI Size to monitor information of broadcast such as slot format indication, preemption indication, or UE group-based indication, whether it needs to monitor network-based configuration.

Based on this, the DCI Size preset requirement may be set as follows in one implementation:

1. the total number of different DCI sizes which need to be monitored by UE configured for each cell is not more than 4;

2. the total number of different DCI sizes which need to be monitored by the UE configured for each cell and are based on the C-RNTI does not exceed 3.

S104: and determining the DCI format according to at least one of the bit number of the DCI, an indication field in the DCI, the RNTI or the control resource configuration which meets the preset requirement.

The Control resource configuration may include a Control-resource set (CORESET) or a search space. In some scenarios, some function enhancements or introduction of new functions may need to distinguish more kinds of DCI information, and then, when a third format of new DCI is introduced based on the first format and the second format of the existing DCI, the DCI format is determined according to at least one of the number of bits of the DCI, an indication field in the DCI, an RNTI, or a control resource configuration that meets the preset requirement, that is, whether the DCI format is the existing first format or the second format, or the newly introduced third format.

Therefore, the method for determining the DCI format provided by the embodiment of the invention can effectively indicate the DCI format and meet the DCI Size preset requirement.

As shown in fig. 2, an embodiment of the present invention provides a method 200 for determining a DCI format, which may be performed by a terminal device, in other words, by software or hardware installed in the terminal device, and the method includes the following steps:

s202: and distinguishing the bit numbers of the DCIs in the same transmission direction so as to ensure that the bit numbers of the DCIs in the same transmission direction are not equal.

And determining a DCI bit number value in a first transmission direction and a DCI bit number value in a second transmission direction according to a first bit indication field in the DCI, wherein at least one of the first transmission direction and the second transmission direction comprises a plurality of DCI bit numbers.

Under the condition that the DCI format is determined according to the number of bits of the DCI meeting the preset requirement, before the number of bits of the DCI is aligned, the number of bits of the DCI in the same transmission direction is distinguished, so that the number of bits of the DCI in the same transmission direction is unequal.

In one implementation, this step may include: distinguishing and processing various bit numbers of the uplink DCI so as to enable any two of the various bit number values of the uplink DCI to be unequal; or performing differential processing on the plurality of bit numbers of the downlink DCI, so that any two of the plurality of bit number values of the downlink DCI are unequal.

When at least one direction of the first transmission direction and the second transmission direction comprises a plurality of DCI bit numbers, executing the following steps of aligning the DCI bit numbers:

s204: a plurality of sets of candidate bit value pairs are determined.

Each candidate bit value pair comprises a first target value and a second target value, the first target value is selected from a plurality of bit number values of the DCI in the first transmission direction in a traversing manner, the first target value does not exist in the plurality of bit number values of the DCI in the second transmission direction, the second target value is selected from the plurality of bit number values of the DCI in the second transmission direction in a traversing manner, the second target value does not exist in the plurality of bit number values of the DCI in the first transmission direction, and the first target value and the second target value are not equal.

For example, it is assumed that an uplink subset corresponding to the multiple bit number values of the DCI in the first transmission direction includes N1 bit numbers, the values of N1 bit numbers are not equal to each other, a downlink subset corresponding to the multiple bit number values of the DCI in the second transmission direction includes N2 bit numbers, the values of N2 bit numbers are not equal to each other, the uplink subset and the downlink subset collectively include N unequal bit numbers, where N1+ N2> is equal to N, when N1+ N2> N, it is described that the values of some bit numbers in the uplink subset and the downlink subset are equal to each other, and bit number combining operation is performed based on the equal values. At this time, a bit number, the value of which does not appear in the downlink subset, is taken from the uplink subset in a traversal manner to serve as a first target value, and then a bit number, the value of which does not appear in the uplink subset, is taken from the downlink subset to serve as a second target value, so that M groups of candidate bit value pairs are formed.

Optionally, the uplink subset only includes multiple bit number values of the non-Fallback DCI in the first transmission direction, and the downlink subset only includes multiple bit number values of the non-Fallback DCI in the second transmission direction.

S206: and determining target bit value pairs to be adjusted from the plurality of groups of candidate bit value pairs.

The group number M of the target bit value pairs is: and A difference (N-A) between the number N of bits of the DCI in the first transmission direction and the second transmission direction and A preset value A in the preset requirement, where the number of bits of the DCI is not equal to each other, that is, M is equal to (N-A), and A subsequent step of adjusting the candidate bit number value pair may be performed when N > A.

The number N is a value set formed by a plurality of values of the number of bits of the DCI in the first transmission direction and the DCI in the second transmission direction, where each unequal value number in the set is, for example, if more than one value in the set is V, the values are only recorded in a single value V.

In one implementation, M sets of candidate bit value pairs having the smallest difference between the first target value and the second target value among the sets of candidate bit value pairs may be used as the target bit value pairs. Wherein the difference between the first target value and the second target value is an absolute value of a difference between the first target value and the second target value.

For example, assuming a preset value a (for example, taking a value of 2) in the preset requirement, M sets of candidate bit value pairs having the smallest difference between the first target value and the second target value among the plurality of sets of candidate bit value pairs are taken as the target bit value pair, where M is N-2.

S208: and adjusting each group of candidate bit value pairs in the target bit value pairs to enable the first target value and the second target value in each group of candidate bit value pairs to be equal.

In one implementation, the first target value or the second target value may be padded or truncated to make the first target value and the second target value equal.

In one implementation, in a case where a first target value of a first target bit value pair exists in a second target bit value pair, the second target value may be lengthened or truncated to make the first target value and the second target value equal, wherein the target bit value pair includes the first target bit value pair and the second target bit value pair. After this adjustment, the first target bit value pair and the second target bit value pair can be adjusted to equal DCI bit numbers.

S210: and determining the DCI format according to the bit number of the DCI meeting the preset requirement.

In some scenarios, some function enhancements or introduction of new functions need to distinguish more kinds of DCI information, and then, when a third format of new DCI is introduced based on a first format and a second format of existing DCI, a DCI format is determined according to a bit number of the DCI meeting the preset requirement, that is, whether the DCI format is the existing first format or the second format or the newly introduced third format is determined.

Through the alignment processing in steps S204-S208, it is ensured that the number of bits of the DCI satisfies the preset requirement and indicates the DCI format, and the impact on the scheduling restriction or scheduling performance, or the impact on the DCI transmission or coverage performance is as small as possible by a simpler operation, and the distinguishing processing in step S202 performed before the alignment processing can further ensure that the DCI format can be distinguished by using the number of bits of the DCI with a simpler operation and a smaller impact or cost, so that the method for determining the DCI format provided by the embodiment of the present invention can effectively indicate the DCI format on the basis of satisfying the DCI Size preset requirement, and has a small restriction on the scheduling and a small impact on the DCI transmission performance.

As shown in fig. 3, an embodiment of the present invention provides a method 300 for determining a DCI format, which may be performed by a terminal device, in other words, by software or hardware installed in the terminal device, and the method includes the following steps:

s302: and distinguishing the bit numbers of the DCIs in the same transmission direction so as to ensure that the bit numbers of the DCIs in the same transmission direction are not equal.

In one implementation, this step may include: and distinguishing and processing a second bit number of the DCI with the first format, a third bit number of the DCI with the second format and a fifth bit number of the DCI with the third format in the first transmission direction, so that the second bit number, the third bit number and the fifth bit number are not equal to each other.

Specifically, in one implementation, padding bits are added to the DCI in the second format or the third format when the second number of bits is equal to the third number of bits or the second number of bits is equal to the fifth number of bits. In another implementation, padding bits are added to the DCI of the third format when the third bit number and the fifth bit number are equal.

In an application scenario, when an uplink non-Fallback Format respectively defines corresponding DCI formats for Single-transmission time interval (Single-TTI) scheduling and Multi-transmission time interval (Multi-TTI) scheduling, assuming that the Single-TTI scheduling uses DCI Format 0_1A and the Multi-TTI scheduling uses DCI Format 0_1B, the uplink scheduling refers to the following three DCI formats in total: DCI Format 0_ 0; DCI Format 0_ 1A; DCI Format 0_ 1B.

At this time, the first Format is a Fallback DCI Format, the second Format is a non-Fallback Single-TTI DCI Format (DCI Format 0_1A), and the third Format is a non-Fallback Multi-TTI DCI Format (DCI Format 0_ 1B).

And adding two DCI formats DCI Format 1_0 and DCI Format 1_1 related to downlink scheduling, wherein the DCI formats based on the C-RNTI have five types. The Fallback DCI formats (i.e. DCI Format 0_0 and DCI Format 1_0) need to consider monitoring in CSS and monitoring in USS, and distinguish two bit numbers, and then the DCI Size based on cell RNTI (C-RNTI) is totally as follows:

A first bit number Size1 corresponding to DCI Format 0_0/Format 1_0 monitored in a Common Search Space (CSS);

a second bit Size2, corresponding to DCI Format 0_0/Format 1_0 monitored in UE-specific Search Space (USS);

a third bit Size3, corresponding to DCI Format 0_1A monitored in the USS;

a fourth bit Size4 corresponding to the DCI Format 1_1 monitored in the USS;

the fifth bit Size5 corresponds to the DCI Format 0_1B monitored in the USS.

In this step, the distinguishing the bit numbers of the DCI in the same transmission direction may include: the bit number of the Fallback DCI in the uplink direction is Size2, and the bit number of the non-Fallback DCI is Size3 or Size 5. The values of Size3 and Size2, or Size5 and Size2 must not be equal, otherwise the terminal cannot distinguish which DCI format is based on the same bit number.

Specifically, the method can be realized by the following steps:

step 0, aligning the bit numbers of the DCI Format 0_0 and the DCI Format 1_0 monitored in the CSS, and only considering adjusting the size of the DCI Format 0_0 (adding 0 at the tail part when the time is short; shortening the resource allocation domain of the longer time-frequency domain); the aligned number of bits may be represented by Size1 (corresponding to DCI Format 0_0/Format 1_0 monitored in CSS, or simply "Fallback DCI in CSS").

Step 1, aligning the bit numbers of the DCI Format 0_0 and the DCI Format 1_0 monitored in the USS, and adjusting the shorter DCI Format (tail adding 0); the aligned number of bits can be represented by Size2 (corresponding to the monitored DCI Format 0_0/Format 1_0 in the USS, or simply "Fallback DCI in USS").

Step 2, respectively distinguishing the bit numbers of the DCI Format 0_1A, the DCI Format 0_1B and the DCI Format 1_1 monitored in the USS from Size2 (adding a padding bit with 1 bit value of 0 at the tail of non-Fallback DCI when the bit numbers are equal); the bit number of the DCI Format 0_1A after the differentiation may be represented by Size3 (corresponding to the DCI Format 0_1A monitored in the USS, or simply "UL non-Fallback Single-TTI DCI in the USS"), the bit number of the DCI Format 1_1 may be represented by Size4 (corresponding to the DCI Format 1_1 monitored in the USS, or simply "DL non-Fallback DCI in the USS"), and the bit number of the DCI Format 0_1B may be represented by Size5 (corresponding to the DCI Format 0_1B monitored in the USS, or simply "UL non-Fallback Multi-TTI in the USS"). When the Size3 or Size5 is equal, padding bits with 1 bit value of 0 are added to the tail of the DCI Format 0_1B corresponding to the Size5 (the Size3 and the Size5 are distinguished based on the number of bits).

S304: and aligning the bit number of the DCI to meet the preset requirement.

The method for aligning the bits of the DCI in this step may include at least one of the following methods.

The method comprises the following steps: and performing padding or truncation on a third bit number of the DCI with the second format or a fifth bit number of the DCI with the third format in the first transmission direction, so that the third bit number or the fifth bit number is equal to a fourth bit number of the DCI with the second format in the second transmission direction, wherein the first transmission direction is different from the second transmission direction. Therefore, when the fourth bit number is the bit number of the downlink DCI format, the uplink scheduling function enhancement can be prevented from affecting the downlink transmission performance.

The method 2 comprises the following steps: and performing padding or truncation on a fourth bit number of the DCI with the second format in the second transmission direction, so that the fourth bit number is equal to a third bit number of the DCI with the second format in the first transmission direction or a fifth bit number of the DCI with the third format, wherein the first transmission direction is different from the second transmission direction. Therefore, the fourth bit number can be adjusted as necessary to ensure that the DCI Size meets the preset requirement, and the overall influence of the adjustment on the uplink and downlink scheduling or the DCI transmission performance is as small as possible.

In one application scenario, the alignment process ends when DCI Size preset requirements are met (e.g., up to 4 different DCI sizes per cell/up to 3 different DCI sizes for C-RNTI), and since Size3 and Size5 requirements are not equal, the necessarily different number of bits in the number of bits for C-RNTI includes: size2, Size3, Size5, if Size1 and Size2 can naturally align at this moment, Size4 can naturally align to Size3 or Size5, then also can satisfy DCI Size preset requirement.

When the DCI Size preset requirement is not met, the following operations are executed: before introducing a new DCI format, when the DCI Size preset requirement is exceeded, the reason is that the Size1 and the Size2 are not naturally aligned, and the Size3 and the Size4 are not naturally aligned, at the moment, the DCI Size preset requirement can be met by directly aligning the Size1 and the Size 2; now a new Size5 is introduced, aligning only Size1 and Size2 may still not meet DCI Size preset requirements. At this point, the Size3, Size4, and Size5 are aligned as necessary to ensure that only up to 2 bits are actually mapped.

The lengthening or shortening of the third bit number of the DCI with the second format or the fifth bit number of the DCI with the third format in the first transmission direction may include at least one of the following steps of adjusting the bit number:

Step 1: referring to fig. 4a and 5a, when the fourth bit number (Size 4 in the figure) is the smallest, the third bit number (Size 3 in the figure) or the fifth bit number (Size 5 in the figure) closest to the fourth bit number is truncated to the fourth bit number.

Step 2: referring to fig. 4b and 5b, when the fourth bit number is the largest, the third bit number or the fifth bit number closest to the fourth bit number is padded to the fourth bit number.

And step 3: referring to fig. 4c and 5c, when a fourth bit number is greater than the third bit number or the fifth bit number and smaller than the fifth bit number or the third bit number, the minimum third bit number or the fifth bit number is padded to the fourth bit number.

Similarly, in this case, the maximum third bit number or the maximum fifth bit number may be truncated to the fourth bit number.

Similarly, in this case, one of the third bit number and the fifth bit number, which has the smallest difference from the fourth bit number, may be lengthened or shortened to the fourth bit number.

Similarly, in the foregoing case, when the difference between the third bit number and the fifth bit number is out of phase, one of the third bit number or the fifth bit number, which takes a value smaller than the fourth bit number, is lengthened to the fourth bit number.

In one implementation, the complementing or puncturing the fourth bit number of the DCI of the second format in the second transmission direction may include:

and 7: and when the fourth bit number is the smallest, the fourth bit number is complemented to the closest one of the third bit number or the fifth bit number to the fourth bit number.

S306: and determining the DCI format according to the bit number of the DCI meeting the preset requirement.

In some scenarios, some function enhancements or introduction of new functions need to distinguish more types of DCI information, and then, when a third format of new DCI is introduced on the basis of a first format and a second format of existing DCI, a DCI format is determined according to the number of bits of the DCI meeting the preset requirement.

Through the processing of steps S302 and 304 in this embodiment, the DCI sizes in the same transmission direction are different and can uniquely identify the DCI format, and the DCI sizes meet the preset requirement, so that the method for determining the DCI format provided by the embodiment of the present invention can effectively indicate the DCI format, meet the preset requirement of the DCI sizes, and has small limitation on scheduling and small influence on the transmission performance of the DCI.

As shown in fig. 6, an embodiment of the present invention provides a method 600 for determining a DCI format, which may be performed by a terminal device, in other words, by software or hardware installed in the terminal device, and the method includes the following steps:

s602: and aligning the bit number of the DCI to meet the preset requirement.

In a case that a DCI format is determined according to at least one of an indication field, an RNTI, or a control resource configuration in the DCI, aligning the bit number of the DCI to meet a preset requirement may include: the step of performing alignment processing on the bit number of the DCI in the embodiment of fig. 2 or the embodiment of fig. 3 is not described herein again.

In addition, since the DCI format is not determined by the number of bits, the DCI format can be uniquely identified without requiring the number of bits, and at this time, the Size3 and the Size5 are not required to be always unequal, this step may further include: and aligning the bit numbers of the DCI in the same transmission direction or different transmission directions so that the number of the bit numbers of the DCI after the alignment processing does not exceed the preset value, wherein the bit numbers of the DCI are not equal.

Specifically, the aligning the bit numbers of the DCI in the same transmission direction may include at least one of the following steps:

A, step a: and performing complementary or truncation on a third bit number of the DCI with the second format or a fifth bit number of the DCI with the third format in the first transmission direction, so that the third bit number is equal to the fifth bit number, and the third bit number is always equal to the fifth bit number, thereby ensuring the downlink transmission performance.

Step b: and performing padding or truncation on the third bit number or the fifth bit number to enable the third bit number or the fifth bit number to be equal to a fourth bit number of the DCI with the second format in a second transmission direction, wherein the first transmission direction is different from the second transmission direction, and when an alignment mode of padding is adopted, the limitation on the flexibility of scheduling can be avoided.

Step c: and performing lengthening or truncation on the two with the minimum value difference among the third bit number, the fourth bit number and the fifth bit number so as to enable the two with the minimum value difference to be equal. Therefore, the overhead of invalid bits caused by tail 0 complementing is minimum, and the influence on the transmission performance or the PDCCH resource allocation performance is minimum.

If the difference between the bit numbers is equal, the protocol can stipulate that the first two bit numbers are taken for alignment or the second two bit numbers are taken for alignment, or the first two bit numbers or the second two bit numbers are taken for alignment by the high-level configuration.

S604: and determining the DCI format according to at least one of an indication domain, RNTI or control resource configuration in the DCI.

In some scenarios, the enhancement of some functions or the introduction of new functions may need to distinguish more kinds of DCI information, and then, when a third format of a new DCI is introduced based on the first format and the second format of an existing DCI, the DCI format may be determined according to at least one of an indication field, RNTI, or control resource configuration in the DCI, that is, whether the DCI format is the existing first format or the second format, or the newly introduced third format.

In one implementation, a 1-bit field may be introduced into the DCI, where a value of the 1 bit is 0 to indicate that the currently scheduled DCI is Single-TTI scheduled DCI, and a value of 1 to indicate that the currently scheduled DCI is Multi-TTI scheduled DCI.

In one implementation, the DCI format may be determined by using different RNTIs, e.g., Single-TTI scheduling still uses C-RNTI, and the base station may pre-configure an additional RNTI, such as Multi-C-RNTI, for the UE by higher layer signaling and use this Multi-C-RNTI to schedule Multi-TTI transmissions. Adding CRC (Cyclic Redundancy Check) bits at the tail of a DCI bit sequence during DCI transmission, wherein the CRC bits are scrambled by RNTI (radio network temporary identifier), when the Size3 is actually equal to the Size5, the UE respectively tries to decode the received DCI bit information based on C-RNTI and Multi-C-RNTI, and based on which RNTI decoding succeeds, the UE can determine that the DCI transmission corresponding to the RNTI is performed; if the base station does not pre-configure Multi-C-RNTI for the UE, the UE considers that Multi-TTI scheduling is not started for the UE, and does not need to receive DCI (Downlink control information) of the Multi-TTI scheduling, so that the problems of Size5 and alignment related to Size5 do not exist.

Determining the DCI format by using different CORESET or search spaces, for example, the base station may configure one or more additional CORESET and/or search spaces for the UE in advance through higher layer signaling, or configure one or more additional CORESET and/or search spaces for a certain BWP (Bandwidth Part) of a certain serving cell/cells for the UE, and only transmit DCI scheduled for Multi-TTI within the CORESET and/or search spaces; when the UE detects uplink scheduling DCI within this/these CORESET and/or search spaces, it knows that it is for Multi-TTI transmission; if the base station does not pre-configure additional Multi-TTI scheduling dedicated CORESET and/or search space for the UE, the UE considers that Multi-TTI scheduling is not turned on for it, and does not need to receive Multi-TTI scheduling DCI, so there are no Size5 and alignment problems associated with Size 5.

In one implementation, when a DCI format is determined according to an indication field in the DCI, an existing designated indication field in the DCI may be extended, and the DCI format is determined by using the extended designated indication field, where the extended designated indication field occupies K, namely, ceiling (log2(B)) bits, where B is the number of DCI formats that need to be distinguished using the designated indication field, log2() is logarithm of 2, and ceiling () is rounding up. Specifically, B may be the determined DCI format number of the non-fallback DCI; b may be the determined total number of DCI formats; b may be the determined number of DCI formats with the same DCI bit number.

For example, the method can be expanded to two bits for distinguishing Size3, Size4 and Size5 at the same time (for example, the method can be specified by a protocol, or a correspondence table configured by a higher layer indicates the correspondence between various values of two-bit indication fields and DCI formats corresponding to Size3, Size4 and Size 5; an example of a correspondence table agreed by a protocol is shown in table 1), when two or three values of Size3, Size4 and Size5 are allowed to be equal, and the number of bits can be reduced to only two by the alignment process.

Table 1 example of correspondence between values of DCI format indicator field and DCI format

Therefore, the method for determining the DCI format provided by the embodiment of the invention can effectively indicate the DCI format, meet the DCI Size preset requirement, and has small limitation on scheduling and small influence on the DCI transmission performance.

As shown in fig. 7, an embodiment of the present invention provides a method 700 for determining a DCI format, which may be performed by a terminal device, in other words, by software or hardware installed in the terminal device, and the method includes the following steps:

s704: a plurality of sets of candidate bit value pairs are determined.

Each candidate bit value pair comprises a first target value and a second target value, the first target value is selected from a plurality of bit number values of the DCI in the first transmission direction, the first target value does not exist in the plurality of bit number values of the DCI in the second transmission direction, the second target value is selected from the plurality of bit number values of the DCI in the second transmission direction, the second target value does not exist in the plurality of bit number values of the DCI in the first transmission direction, and the first target value and the second target value are not equal to each other. For example, a first target value and a second target value may be determined over the DCI bit numbers of the first transmission direction and the second transmission direction, respectively.

S706: and determining target bit value pairs to be adjusted from the plurality of groups of candidate bit value pairs.

The group number M of the target bit value pairs is: and A difference (N-A) between the number N of bits of the DCI in the first transmission direction and the second transmission direction and A preset value A in the preset requirement, wherein the number of bits of the DCI is not equal to each other.

In one implementation, M sets of candidate bit value pairs having the smallest difference between the first target value and the second target value among the sets of candidate bit value pairs may be used as the target bit value pairs.

S708: and adjusting each group of candidate bit value pairs in the target bit value pairs to enable the first target value and the second target value in each group of candidate bit value pairs to be equal.

In one implementation, the second target value may be padded or truncated in the case where the first target value in a first target bit value pair is present in a second target bit value pair to make the first target value and the second target value equal, wherein the target bit value pair includes the first target bit value pair and the second target bit value pair.

S710: and determining the DCI format according to the bit number of the DCI meeting the preset requirement.

The specific implementation steps of the above steps S704-S708 are similar to the steps S204-S208 in the embodiment of fig. 2, and are not described herein again.

Through the alignment processing in steps S704-S708, it is ensured that the number of bits of the DCI satisfies the preset requirement and the DCI format is indicated, so that the method for determining the DCI format according to the embodiment of the present invention can effectively indicate the DCI format on the basis of satisfying the preset requirement of the DCI Size, and has small limitation on scheduling and small influence on the DCI transmission performance.

A method of determining a DCI format according to an embodiment of the present invention is described in detail above in conjunction with fig. 1-7. A method of determining a DCI format according to another embodiment of the present invention will be described in detail below with reference to fig. 8. It is to be understood that the contents of the network device processing steps described from the network device side are the same as those described in the terminal device side, and the related description is appropriately omitted to avoid redundancy.

Fig. 8 is a schematic diagram of a flow for determining a DCI format according to an embodiment of the present invention, which may be applied to a network device. As shown in fig. 8, the method 800 includes:

s802: and aligning the bit number of the DCI to meet the preset requirement.

The method for aligning the DCI bit numbers by the network device is the same as or similar to the method for aligning the DCI bit numbers by the terminal device in the embodiments of fig. 1 to 7, which is not described herein again, and thus it is ensured that the network device and the terminal device understand the DCI formats consistently.

S804: indicating a DCI format through at least one of the bit number of the DCI, an indication field in the DCI, an RNTI or a control resource configuration which meet the preset requirement.

A method for determining a DCI format according to an embodiment of the present invention is described in detail above with reference to fig. 1 to 8. A terminal device according to an embodiment of the present invention will be described in detail below with reference to fig. 9.

Fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 9, the terminal apparatus 900 includes: an alignment module 910 and a determination module 920.

The alignment module 910 is configured to perform alignment processing on the bit number of the DCI so as to meet a preset requirement. The determining module 920 is configured to determine a DCI format according to at least one of the number of bits of the DCI, an indication field in the DCI, an RNTI, or a control resource configuration that meets the preset requirement.

In one implementation, the alignment module 910 is configured to determine multiple candidate bit value pairs, where each candidate bit value pair includes a first target value and a second target value, where the first target value is selected from multiple bit number values of the DCI in the first transmission direction in a traversal manner, the first target value does not exist in the multiple bit number values of the DCI in the second transmission direction, the second target value is selected from multiple bit number values of the DCI in the second transmission direction in a traversal manner, the second target value does not exist in the multiple bit number values of the DCI in the first transmission direction, and the first target value and the second target value are not equal to each other; determining target bit value pairs to be adjusted from the plurality of sets of candidate bit value pairs; adjusting each of the sets of candidate bit value pairs to equalize a first target value and a second target value in the set of candidate bit value pairs.

In one implementation, the number of groups M of the target bit value pairs is: and the number N of the bits of the DCI in the first transmission direction and the second transmission direction is different from the preset value A in the preset requirement, wherein the bits of the DCI are not equal to each other.

In one implementation, the alignment module 910 is configured to use the candidate bit value pair with a smaller difference between the first target value and the second target value as the target bit value pair according to the group number of the target bit value pair.

In one implementation, the alignment module 910 is configured to perform a lengthening or truncation on the first target value or the second target value to equalize the first target value and the second target value.

In one implementation, the alignment module 910 is configured to, in a case that a first target value in a first target bit value pair exists in a second target bit value pair, complement or truncate the second target value to make the first target value and the second target value equal, wherein the target bit value pair includes the first target bit value pair and the second target bit value pair.

In one implementation, the alignment module 910 is configured to complement or truncate a third bit number of the DCI with the second format or a fifth bit number of the DCI with the third format in a first transmission direction, so that the third bit number or the fifth bit number is equal to a fourth bit number of the DCI with the second format in a second transmission direction, where the first transmission direction is different from the second transmission direction; or alternatively

The alignment module 910 is configured to perform padding or puncturing on a fourth bit number of the DCI with the second format in the second transmission direction, so that the fourth bit number is equal to a third bit number of the DCI with the second format in the first transmission direction or equal to a fifth bit number of the DCI with the third format, where the first transmission direction is different from the second transmission direction.

In one implementation, the alignment module 910 is configured to truncate the third bit number or the fifth bit number closest to the fourth bit number when the fourth bit number is minimum; or

In one implementation, the alignment module 910 is configured to, when the fourth bit number is maximum, complement the third bit number or the fifth bit number that is closest to the fourth bit number; or

In an implementation manner, the alignment module 910 is configured to, when a fourth bit number is greater than the third bit number or the fifth bit number and smaller than the fifth bit number or the third bit number, complement the minimum third bit number or the fifth bit number to the fourth bit number; or

In an implementation manner, the alignment module 910 is configured to truncate a maximum third bit number or fifth bit number to a fourth bit number when the fourth bit number is greater than the third bit number or the fifth bit number and is less than the fifth bit number or the third bit number; or

In an implementation manner, the alignment module 910 is configured to, when a fourth bit number is greater than the third bit number or the fifth bit number and is smaller than the fifth bit number or the third bit number, complement or truncate one of the third bit number or the fifth bit number, which has a smallest difference with the fourth bit number, to the fourth bit number; or

In an implementation manner, the alignment module 910 is configured to, when a fourth bit number is greater than the third bit number or the fifth bit number and smaller than the fifth bit number or the third bit number and a difference between the third bit number and the fifth bit number is out of phase with the fourth bit number, lengthen one of the third bit number or the fifth bit number, which takes a value smaller than the fourth bit number, to the fourth bit number.

In one implementation, the alignment module 910 is configured to, when the fourth bit number is minimum, complement the fourth bit number to one of the third bit number or the fifth bit number that is closest to the fourth bit number.

In an implementation manner, the alignment module 910 is configured to, when a DCI format is determined according to the bit number of the DCI meeting the preset requirement, perform a distinguishing process on the bit numbers of the DCI in the same transmission direction before performing the alignment process on the bit numbers of the DCI, so that the bit numbers of the DCI in the same transmission direction are not equal to each other.

In an implementation manner, the alignment module 910 is configured to perform differentiation processing on multiple bit numbers of the uplink DCI, so that any two of the multiple bit number values of the uplink DCI are unequal; or

In an implementation manner, the alignment module 910 is configured to perform differential processing on multiple bit numbers of the downlink DCI, so that any two of the multiple bit number values of the downlink DCI are unequal.

In an implementation manner, the alignment module 910 is configured to perform differential processing on a second bit number of the DCI in the first format, a third bit number of the DCI in the second format, and a fifth bit number of the DCI in the third format in the first transmission direction, so that the second bit number, the third bit number, and the fifth bit number are not equal to each other.

In one implementation, the alignment module 910 is configured to add padding bits to the DCI of the second format or the third format when the second bit number is equal to the third bit number or the second bit number is equal to the fifth bit number; or when the third bit number and the fifth bit number are equal, padding bits are added to the DCI of the third format.

In an implementation manner, the alignment module 910 is configured to, when a DCI format is determined according to at least one of an indication field, an RNTI, or a control resource configuration in the DCI, perform alignment processing on the bit numbers of the DCI in the same transmission direction or different transmission directions, so that the number of the bit numbers of the DCI after the alignment processing does not exceed the preset value, where the bit numbers of the DCI are not equal to each other.

In an implementation manner, the alignment module 910 is configured to complement or truncate a third bit number of the DCI with the second format or a fifth bit number of the DCI with the third format in the first transmission direction, so that the third bit number is equal to the fifth bit number; or

In one implementation, the alignment module 910 is configured to perform padding or puncturing on the third bit number or the fifth bit number, so that the third bit number or the fifth bit number is equal to a fourth bit number of a DCI of a second format in a second transmission direction, where the first transmission direction is different from the second transmission direction; or

In an implementation manner, the alignment module 910 is configured to perform lengthening or shortening on the third bit number, the fourth bit number, and the fifth bit number, which have the smallest value difference, so that the two which have the smallest value difference are equal.

In one implementation, the determining module 920 is configured to, when a DCI format is determined according to an indication field in the DCI, extend a specified indication field in the DCI, where the extended specified indication field occupies K-ceiling (log2(B)) bits, where B is the number of DCI formats that need to be distinguished using the specified indication field, log2() is logarithm of 2, and ceiling () is rounding-up.

In one implementation, the first format is a Fallback DCI format, the second format is a non-Fallback Single-TTI DCI format, and the third format is a non-Fallback Multi-TTI DCI format.

The terminal device 900 according to the embodiment of the present invention may refer to the process corresponding to the method 100-700 according to the embodiment of the present invention, and each unit/module and the other operations and/or functions in the terminal device 900 are respectively for implementing the corresponding process in the method 100-700 and achieving the same or equivalent technical effects, and for brevity, no further description is provided herein.

Fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present invention. As shown in fig. 10, the network device 1000 includes: a processing module 1010 and an indication module 1020.

The processing module 1010 is configured to align the bits of the DCI to meet a preset requirement; the indicating module 1020 is configured to indicate a DCI format through at least one of a bit number of the DCI, an indication field in the DCI, an RNTI, or a control resource configuration that meets the preset requirement.

In one implementation, the processing module 1010 is configured to determine multiple candidate bit value pairs, where each candidate bit value pair includes a first target value and a second target value, where the first target value is selected from multiple bit number values of the DCI in the first transmission direction in a traversal manner, the first target value does not exist in the multiple bit number values of the DCI in the second transmission direction, the second target value is selected from multiple bit number values of the DCI in the second transmission direction in a traversal manner, the second target value does not exist in the multiple bit number values of the DCI in the first transmission direction, and the first target value and the second unequal target value are target values; determining target bit value pairs to be adjusted from the plurality of groups of candidate bit value pairs; and adjusting each group of candidate bit value pairs in the target bit value pairs to enable the first target value and the second target value in each group of candidate bit value pairs to be equal.

In one implementation, the number M of groups used by the processing module 1010 for the target bit value pair is: and the difference value between the number N of unequal bits of the DCI in the first transmission direction and the second transmission direction and the preset value A in the preset requirement.

In one implementation, the processing module 1010 is configured to use a candidate bit value pair with a smaller difference between the first target value and the second target value as the target bit value pair according to the group number of the target bit value pair.

In one implementation, the processing module 1010 is configured to perform a lengthening or truncation on the first target value or the second target value to equalize the first target value and the second target value.

In one implementation, the processing module 1010 is configured to, if a first target value in a first target bit value pair exists in a second target bit value pair, complement or truncate the second target value to make the first target value and the second target value equal, wherein the target bit value pair includes the first target bit value pair and the second target bit value pair.

In an implementation manner, the processing module 1010 is configured to complement or truncate a third bit number of the DCI with the second format or a fifth bit number of the DCI with the third format in a first transmission direction, so that the third bit number or the fifth bit number is equal to a fourth bit number of the DCI with the second format in a second transmission direction, where the first transmission direction is different from the second transmission direction; or

In an implementation manner, the processing module 1010 is configured to perform padding or puncturing on a fourth bit number of the DCI with the second format in the second transmission direction, so that the fourth bit number is equal to a third bit number of the DCI with the second format in the first transmission direction or equal to a fifth bit number of the DCI with the third format, where the first transmission direction is different from the second transmission direction.

In one implementation, the processing module 1010 is configured to truncate the third bit number or the fifth bit number that is closest to the fourth bit number when the fourth bit number is minimum; or alternatively

In an implementation manner, the processing module 1010 is configured to, when the fourth bit number is maximum, complement the third bit number or the fifth bit number that is closest to the fourth bit number; or

In an implementation manner, the processing module 1010 is configured to, when a fourth bit number is greater than the third bit number or the fifth bit number and smaller than the fifth bit number or the third bit number, complement the minimum third bit number or the fifth bit number to the fourth bit number; or

In an implementation manner, the processing module 1010 is configured to truncate a maximum third bit number or fifth bit number to a fourth bit number when the fourth bit number is greater than the third bit number or the fifth bit number and is less than the fifth bit number or the third bit number; or alternatively

In an implementation manner, the processing module 1010 is configured to, when a fourth bit number is greater than the third bit number or the fifth bit number and is smaller than the fifth bit number or the third bit number, complement or truncate one of the third bit number or the fifth bit number, which has a smallest difference with the fourth bit number, to the fourth bit number; or alternatively

In one implementation, the processing module 1010 is configured to, when a fourth bit number is greater than the third bit number or the fifth bit number and smaller than the fifth bit number or the third bit number and a difference between the third bit number and the fifth bit number is out of phase with the fourth bit number, lengthen one of the third bit number or the fifth bit number whose value is smaller than the fourth bit number to the fourth bit number.

In one implementation, the processing module 1010 is configured to, when the fourth bit number is minimum, complement the fourth bit number to one of the third bit number and the fifth bit number that is closest to the fourth bit number.

In an implementation manner, the processing module 1010 is configured to perform differential processing on the bit numbers of the DCIs in the same transmission direction under the condition that the DCI format is determined according to the bit number of the DCI meeting the preset requirement, so that the bit numbers of the DCI in the same transmission direction are unequal.

In an implementation manner, the processing module 1010 is configured to perform differential processing on multiple bit numbers of the uplink DCI, so that any two of the multiple bit number values of the uplink DCI are unequal; or

In an implementation manner, the processing module 1010 is configured to perform differential processing on multiple bit numbers of the downlink DCI, so that any two of the multiple bit number values of the downlink DCI are unequal.

In an implementation manner, the processing module 1010 is configured to perform differential processing on a second bit number of the DCI in the first format, a third bit number of the DCI in the second format, and a fifth bit number of the DCI in the third format in the first transmission direction, so that the second bit number, the third bit number, and the fifth bit number are not equal to each other.

In one implementation, the processing module 1010 is configured to add padding bits to the DCI in the second format or the third format when the second bit number is equal to the third bit number or the second bit number is equal to the fifth bit number; or

In one implementation, the processing module 1010 is configured to add padding bits to the DCI in the third format when the third bit number and the fifth bit number are equal.

In an implementation manner, the processing module 1010 is configured to, when a DCI format is determined according to at least one of an indication field, an RNTI, and a control resource configuration in the DCI, perform alignment processing on bit numbers of the DCI in the same transmission direction or different transmission directions, so that the number of the bit numbers of the DCI after the alignment processing does not exceed the preset value, where the bit numbers of the DCI are not equal to each other.

In an implementation manner, the processing module 1010 is configured to complement or truncate a third bit number of the DCI with the second format or a fifth bit number of the DCI with the third format in the first transmission direction, so that the third bit number is equal to the fifth bit number; or

In one implementation, the processing module 1010 is configured to perform padding or puncturing on the third bit number or the fifth bit number, so that the third bit number or the fifth bit number is equal to a fourth bit number of DCI with a second format in a second transmission direction, where the first transmission direction is different from the second transmission direction; or

In an implementation manner, the processing module 1010 is configured to perform lengthening or shortening on the third bit number, the fourth bit number, and the fifth bit number, which have the smallest value difference, so that the two which have the smallest value difference are equal.

In one implementation, the indication module 1020 is configured to, when a DCI format is determined according to an indication field in the DCI, extend a specified indication field in the DCI, where the extended specified indication field occupies K-ceiling (log2(B)) bits, where B is the number of DCI formats that need to be distinguished using the specified indication field, log2() is a logarithm of 2, and ceiling () is a rounding-up.

The network device 1000 according to the embodiment of the present invention may refer to the flow corresponding to the method 800 of the embodiment of the present invention, and each unit/module and the other operations and/or functions in the network device 1000 are respectively for implementing the corresponding flow in the method 800 and achieving the same or equivalent technical effects, and for brevity, no further description is provided herein.

Fig. 11 is a block diagram of a terminal device of another embodiment of the present invention. The terminal device 1100 shown in fig. 11 includes: at least one processor 1101, memory 1102, at least one network interface 1104, and a user interface 1103. The various components in end device 1100 are coupled together by a bus system 1105. It is understood that the bus system 1105 is used to enable communications among the components. The bus system 1105 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 10 as the bus system 1105.

The user interface 1103 may include, among other things, a display, a keyboard, a pointing device (e.g., a mouse, trackball), a touch pad, or a touch screen.

It is to be understood that the memory 1102 in embodiments of the present invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1102 of the subject systems and methods is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 1102 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 11021, and application programs 11022.

The operating system 11021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 11022 contains various applications such as a Media Player (Media Player), a Browser (Browser), etc. for implementing various application services. Programs that implement methods in accordance with embodiments of the invention may be included in application 11022.

In this embodiment of the present invention, the terminal device 1100 further includes: a computer program stored on the memory 1102 and executable on the processor 1101, the computer program when executed by the processor 1101 performing the steps of the method 100-700 as follows.

The methods disclosed in the embodiments of the present invention described above may be implemented in the processor 1101 or by the processor 1101. The processor 1101 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 1101. The Processor 1101 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 1102, and the processor 1101 reads the information in the memory 1102 and performs the steps of the above method in combination with the hardware thereof. In particular, the computer readable storage medium has stored thereon a computer program, which when executed by the processor 1101, implements the steps of the embodiments of the

method

100 and 700 as described above.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within 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), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

The terminal device 1100 can implement each process implemented by the terminal device in the foregoing embodiments, and can achieve the same or equivalent technical effects, and details are not described here to avoid repetition.

Referring to fig. 12, fig. 12 is a block diagram of a network device applied in the embodiment of the present invention, which can implement the details of method embodiment 800 and achieve the same effects. As shown in fig. 12, the network device 1200 includes: a processor 1201, a transceiver 1202, a memory 1203 and a bus interface, wherein:

in this embodiment of the present invention, the network device 1100 further includes: a computer program stored on the memory 1203 and executable on the processor 1201, the computer program when executed by the processor 1201 performs the steps of the method 800.

In fig. 11, the bus architecture may include any number of interconnected buses and bridges, with various circuits linking one or more processors, represented by the processor 1201, and memory, represented by the memory 1203. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1202 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

The processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1203 may store data used by the processor 1201 in performing operations.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the method embodiment 700, and can achieve the same technical effects, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

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

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method of determining a DCI format, the method being performed by a terminal device, the method comprising:

aligning the bit number of the DCI to meet the preset requirement;

determining a DCI format according to at least one of the bit number of the DCI, an indication field, an RNTI or a control resource configuration in the DCI, which meets the preset requirement;

the aligning the bit number of the DCI includes:

determining a plurality of groups of candidate bit value pairs, wherein each candidate bit value pair comprises a first target value and a second target value, the first target value is selected from a plurality of bit number values of DCI (Downlink control information) in a first transmission direction, the first target value does not exist in the plurality of bit number values of DCI in a second transmission direction, the second target value is selected from the plurality of bit number values of DCI in the second transmission direction, and the second target value does not exist in the plurality of bit number values of DCI in the first transmission direction;

determining target bit value pairs to be adjusted from the plurality of groups of candidate bit value pairs;

adjusting each group of candidate bit value pairs in the target bit value pairs to enable a first target value and a second target value in each group of candidate bit value pairs to be equal; or

The aligning the bit number of the DCI includes:

performing lengthening or truncation on a third bit number of the DCI in a second format or a fifth bit number of the DCI in the third format in a first transmission direction, so that the third bit number or the fifth bit number is equal to a fourth bit number of the DCI in the second format in a second transmission direction, wherein the DCI formats include the second format and the third format, and the first transmission direction is different from the second transmission direction; or a fourth bit number of the DCI with the second format in the second transmission direction is padded or truncated, so that the fourth bit number is equal to a third bit number of the DCI with the second format in the first transmission direction or equal to a fifth bit number of the DCI with the third format, where the DCI format includes the second format and the third format, and the first transmission direction is different from the second transmission direction; or

The aligning the bit number of the DCI includes:

and under the condition that a DCI format is determined according to at least one of an indication domain, an RNTI (radio network temporary identity) or control resource configuration in the DCI, aligning the bit numbers of the DCI in the same transmission direction or different transmission directions so that the number of the bit numbers of the DCI after the alignment processing does not exceed a preset value A in the preset requirement, wherein the bit numbers of the DCI are not equal.

2. The method of claim 1, wherein prior to said aligning the bits of the DCI, further comprising:

3. The method of claim 1, wherein the sets of candidate bit value pairs are determined by a number of DCI bits traversing the first transmission direction and the second transmission direction.

4. The method of claim 1, wherein the number of groups of target bit value pairs, M, is: and the number N of the bits of the DCI in the first transmission direction and the second transmission direction is different from the preset value A in the preset requirement, and the number of the bits of the DCI is unequal.

5. The method of claim 4, wherein determining a target bit value pair to adjust from the plurality of sets of candidate bit value pairs comprises:

and taking the M groups of candidate bit value pairs with the minimum difference between the first target value and the second target value as the target bit value pairs in the multiple groups of candidate bit value pairs.

6. The method of claim 1, wherein adjusting each of the sets of candidate bit value pairs in the target bit value pair to equalize the first target value and the second target value in each of the sets of candidate bit value pairs comprises:

-performing a lengthening or truncation of the first or second target value to make the first and second target values equal.

7. The method of claim 1, wherein adjusting each of the sets of candidate bit value pairs in the target bit value pair to equalize the first target value and the second target value in each of the sets of candidate bit value pairs comprises:

in the case where a first target value of a first target bit value pair is present in a second target bit value pair, the second target value is padded or truncated to equalize the first target value and the second target value, wherein the target bit value pair comprises the first target bit value pair and the second target bit value pair.

8. The method of claim 1, wherein the complementing or puncturing a third number of bits of the second format of DCI or a fifth number of bits of the third format of DCI in the first transmission direction comprises:

Truncating the third bit number or the fifth bit number closest to the fourth bit number when the fourth bit number is minimum; or alternatively

When the fourth bit number is maximum, growing the third bit number or the fifth bit number closest to the fourth bit number; or alternatively

When a fourth bit number is greater than the third bit number or the fifth bit number and is less than the fifth bit number or the third bit number, complementing the minimum third bit number or the fifth bit number to the fourth bit number; or

Truncating the maximum third bit number or the maximum fifth bit number to the fourth bit number when the fourth bit number is larger than the third bit number or the fifth bit number and smaller than the fifth bit number or the third bit number; or

When a fourth bit number is larger than the third bit number or the fifth bit number and smaller than the fifth bit number or the third bit number, lengthening or truncating one of the third bit number or the fifth bit number, which has the smallest difference with the fourth bit number, to the fourth bit number; or

And when a fourth bit number is larger than the third bit number or the fifth bit number and smaller than the fifth bit number or the third bit number and a difference between the third bit number and the fifth bit number is out of phase with the fourth bit number, lengthening one of the third bit number or the fifth bit number, which takes a value smaller than the fourth bit number, to the fourth bit number.

9. The method of claim 1, wherein the padding or puncturing a fourth number of bits of the DCI of the second format in the second transmission direction comprises:

and when the fourth bit number is the smallest, the fourth bit number is complemented to the closest one of the third bit number or the fifth bit number to the fourth bit number.

10. The method of claim 2, wherein in a case that the DCI format is determined according to the bit number of the DCI satisfying the preset requirement, before the aligning the bit number of the DCI, the method further comprises:

and distinguishing the bit numbers of the DCIs in the same transmission direction so as to ensure that the bit numbers of the DCIs in the same transmission direction are not equal.

11. The method of claim 9, wherein the distinguishing the number of bits of the DCI in the same transmission direction comprises:

Performing differential processing on the plurality of bit numbers of the DCI in the first transmission direction so as to enable any two of the plurality of bit number values of the DCI in the first transmission direction to be unequal; or

And performing distinguishing processing on the plurality of bit numbers of the DCI in the second transmission direction so as to enable any two of the plurality of bit number values of the DCI in the second transmission direction to be unequal.

12. The method of claim 10, wherein the distinguishing the number of bits of the DCI in the same transmission direction comprises:

and distinguishing and processing a second bit number of the DCI in the first format, a third bit number of the DCI in the second format and a fifth bit number of the DCI in the third format in the first transmission direction so that the second bit number, the third bit number and the fifth bit number are not equal to each other, wherein the DCI formats comprise the first format, the second format and the third format.

13. The method of claim 12, wherein the distinguishing the number of bits of the DCI in the same transmission direction comprises:

adding padding bits to the DCI of the second format or the third format when the second bit number is equal to the third bit number or the second bit number is equal to the fifth bit number; or

And when the third bit number and the fifth bit number are equal, adding padding bits in the DCI of the third format.

14. The method of claim 1, wherein the aligning the number of bits of the DCI for the same transmission direction comprises:

performing padding or truncation on a third bit number of the DCI with the second format or a fifth bit number of the DCI with the third format in the first transmission direction so as to enable the third bit number to be equal to the fifth bit number; or

Performing padding or puncturing on the third bit number or the fifth bit number to make the third bit number or the fifth bit number equal to a fourth bit number of a second-format DCI in a second transmission direction, wherein the first transmission direction is different from the second transmission direction; or

And performing lengthening or truncation on the two with the minimum value difference among the third bit number, the fourth bit number and the fifth bit number so as to enable the two with the minimum value difference to be equal.

15. The method of claim 1, wherein in the case that a DCI format is determined from an indication field in the DCI, the method further comprises:

and expanding a designated indication domain in the DCI, wherein the expanded designated indication domain occupies K = ceiling (log2(B)) bits, B is the number of DCI formats which need to be distinguished by using the designated indication domain, log2() is logarithmic to 2, and ceiling () is rounding-up.

16. The method of claim 1, wherein the DCI formats comprise a first format, a second format, and a third format, the first format being a Fallback DCI format, the second format being a non-Fallback Single-TTI DCI format, and the third format being a non-Fallback Multi-TTI DCI format.

17. A method of determining a DCI format, the method being performed by a network device, the method comprising:

aligning the bit number of the DCI to enable the bit number of the DCI to meet the preset requirement;

indicating a DCI format by at least one of the bit number of the DCI, an indication field in the DCI, an RNTI or a control resource configuration which meet the preset requirements;

the aligning the bit number of the DCI includes:

The aligning the bit number of the DCI includes:

performing padding or truncation on a third bit number of the DCI in the second format or a fifth bit number of the DCI in the third format in the first transmission direction, so that the third bit number or the fifth bit number is equal to a fourth bit number of the DCI in the second format in the second transmission direction, wherein the DCI formats include the second format and the third format, and the first transmission direction is different from the second transmission direction; or a fourth bit number of the DCI of the second format in the second transmission direction is subjected to lengthening or truncation, so that the fourth bit number is equal to a third bit number of the DCI of the second format in the first transmission direction or a fifth bit number of the DCI of the third format, where the DCI format includes the second format and the third format, and the first transmission direction is different from the second transmission direction; or alternatively

The aligning the bit number of the DCI includes:

18. The method of claim 17, wherein prior to said aligning the number of bits of the DCI, further comprising:

and indicating a DCI bit number value in a first transmission direction and a DCI bit number value in a second transmission direction through a first bit indication domain in the DCI, wherein at least one of the first transmission direction and the second transmission direction comprises a plurality of DCI bit numbers.

19. The method of claim 17, wherein the plurality of sets of candidate bit value pairs are determined by a number of DCI bits traversing the first transmission direction and the second transmission direction.

20. The method of claim 17, wherein the number of groups of target bit value pairs, M, is: and the number N of the bits of the DCI in the first transmission direction and the second transmission direction is different from the preset value A in the preset requirement, and the bits of the DCI are not equal to each other.

21. The method of claim 20, wherein determining a target bit value pair to adjust from the plurality of sets of candidate bit value pairs comprises:

22. The method of claim 17, wherein adjusting each of the sets of candidate bit value pairs in the target bit value pair to equalize the first target value and the second target value in each of the sets of candidate bit value pairs comprises:

23. The method of claim 17, wherein adjusting each of the sets of candidate bit value pairs in the target bit value pair to equalize the first target value and the second target value in each of the sets of candidate bit value pairs comprises:

24. The method of claim 17, wherein the complementing or puncturing a third number of bits of the second format of DCI or a fifth number of bits of the third format of DCI in the first transmission direction comprises:

25. The method of claim 17, wherein the padding or puncturing a fourth number of bits of the DCI of the second format in the second transmission direction comprises:

and when the fourth bit number is the minimum, the fourth bit number is complemented to one of the third bit number or the fifth bit number which is the closest to the fourth bit number.

26. The method of claim 18, wherein in a case where a DCI format is determined according to the number of bits of the DCI satisfying the preset requirement, before the aligning the number of bits of the DCI, the method further comprises:

27. The method of claim 26, wherein the distinguishing the number of bits of the DCI for the same transmission direction comprises:

Performing differential processing on the multiple bit numbers of the DCI in the first transmission direction so as to enable any two of the multiple bit number values of the DCI in the first transmission direction to be unequal; or alternatively

And performing distinguishing processing on the multiple bit numbers of the DCI in the second transmission direction so as to enable any two of the multiple bit number values of the DCI in the second transmission direction to be unequal.

28. The method of claim 26, wherein the distinguishing the number of bits of the DCI for the same transmission direction comprises:

29. The method of claim 28, wherein the distinguishing the number of bits of the DCI for the same transmission direction comprises:

30. The method of claim 17, wherein the aligning the number of bits of the DCI for the same transmission direction comprises:

31. The method of claim 17, wherein in the case that a DCI format is determined from an indication field in the DCI, the method further comprises:

32. The method of claim 17, wherein the DCI format comprises a first format, a second format, and a third format, the first format being a Fallback DCI format, the second format being a non-Fallback Single-TTI DCI format, and the third format being a non-Fallback Multi-TTI DCI format.

33. A terminal device, comprising:

the alignment module is used for aligning the bit number of the DCI so that the bit number of the DCI meets the preset requirement;

a determining module, configured to determine a DCI format according to at least one of the number of bits of the DCI, an indication field in the DCI, an RNTI, or a control resource configuration that meets the preset requirement;

the aligning module is configured to align the bits of the DCI, and includes:

Determining target bit value pairs to be adjusted from the plurality of sets of candidate bit value pairs;

adjusting each group of candidate bit value pairs in the target bit value pairs to enable a first target value and a second target value in each group of candidate bit value pairs to be equal; or alternatively

The aligning module is configured to align the bits of the DCI, and includes:

performing padding or truncation on a third bit number of the DCI in the second format or a fifth bit number of the DCI in the third format in the first transmission direction, so that the third bit number or the fifth bit number is equal to a fourth bit number of the DCI in the second format in the second transmission direction, wherein the DCI formats include the second format and the third format, and the first transmission direction is different from the second transmission direction; or a fourth bit number of the DCI with the second format in the second transmission direction is padded or truncated, so that the fourth bit number is equal to a third bit number of the DCI with the second format in the first transmission direction or equal to a fifth bit number of the DCI with the third format, where the DCI format includes the second format and the third format, and the first transmission direction is different from the second transmission direction; or alternatively

The aligning module is configured to perform alignment processing on the bit number of the DCI, and includes:

34. A network device, comprising:

the processing module is used for aligning the bit number of the DCI so that the bit number of the DCI meets the preset requirement;

an indicating module, configured to indicate a DCI format according to at least one of a bit number of the DCI, an indication field in the DCI, an RNTI, or a control resource configuration that meets the preset requirement;

the processing module is configured to perform alignment processing on the bit number of the DCI, and includes:

performing padding or truncation on a third bit number of the DCI in the second format or a fifth bit number of the DCI in the third format in the first transmission direction, so that the third bit number or the fifth bit number is equal to a fourth bit number of the DCI in the second format in the second transmission direction, wherein the DCI formats include the second format and the third format, and the first transmission direction is different from the second transmission direction; or a fourth bit number of the DCI with the second format in the second transmission direction is padded or truncated, so that the fourth bit number is equal to a third bit number of the DCI with the second format in the first transmission direction or equal to a fifth bit number of the DCI with the third format, where the DCI format includes the second format and the third format, and the first transmission direction is different from the second transmission direction; or

35. A method of determining a DCI format, the method being performed by a terminal device, the method comprising:

aligning the bit number of the DCI to meet the preset requirement;

before the aligning process of the bit number of the DCI, the method further includes:

determining a value of the bit number of the DCI in a first transmission direction and a value of the bit number of the DCI in a second transmission direction according to a first bit indication field in the DCI, wherein at least one of the first transmission direction and the second transmission direction comprises a plurality of DCI bit numbers;

Under the condition that the DCI format is determined according to the bit number of the DCI meeting the preset requirement, before the aligning processing is performed on the bit number of the DCI, the method further comprises the following steps:

36. The method of claim 35, wherein the distinguishing the number of bits of the DCI in the same transmission direction comprises:

37. The method of claim 35, wherein the distinguishing the number of bits of the DCI in the same transmission direction comprises:

and performing differential processing on a second bit number of the first-format DCI, a third bit number of the second-format DCI, and a fifth bit number of the third-format DCI in the first transmission direction, so that the second bit number, the third bit number, and the fifth bit number are not equal to each other, where the DCI formats include the first format, the second format, and the third format.

38. The method of claim 37, wherein the distinguishing the number of bits of the DCI for the same transmission direction comprises:

39. A method of determining a DCI format, the method being performed by a network device, the method comprising:

indicating a DCI format through at least one of the bit number of the DCI, an indication field in the DCI, an RNTI or a control resource configuration which meet the preset requirement;

before the aligning process of the bit number of the DCI, the method further includes: indicating a DCI bit number value in a first transmission direction and a DCI bit number value in a second transmission direction through a first bit indication domain in the DCI, wherein at least one of the first transmission direction and the second transmission direction comprises a plurality of DCI bit numbers;

Under the condition that the DCI format is determined according to the bit number of the DCI meeting the preset requirement, before the aligning processing is performed on the bit number of the DCI, the method further comprises the following steps: and distinguishing the bit numbers of the DCIs in the same transmission direction so as to ensure that the bit numbers of the DCIs in the same transmission direction are not equal.

40. The method of claim 39, wherein the distinguishing the number of bits of the DCI in the same transmission direction comprises:

41. The method of claim 39, wherein the distinguishing the number of bits of the DCI in the same transmission direction comprises:

42. The method of claim 41, wherein the distinguishing processing of the number of bits of the DCI in the same transmission direction comprises:

And when the third bit number and the fifth bit number are equal, adding padding bits in the DCI in the third format.

43. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps of a method of determining a DCI format according to any one of claims 1 to 16, 35 to 38.

44. A network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps of a method of determining a DCI format according to any one of claims 17 to 32, 39 to 42.

45. A computer readable storage medium, having stored thereon a computer program which, when executed by a processor, carries out the steps of a method of determining a DCI format according to any one of claims 1 to 16, 35 to 38 or claims 17 to 32, 39 to 42.