CN113115448A - Method, device, equipment and medium for determining physical downlink control channel - Google Patents

Abstract

The embodiment of the invention discloses a method, a device, equipment and a medium for determining a physical downlink control channel, wherein the method comprises the following steps: mapping CCE-to-REG on a plurality of Resource Element Group (REG) bundles of a first control resource set according to the number of the Resource Element Group (REG) bundles and the size of a Control Channel Element (CCE), so as to obtain at least one CCE of the first control resource set, wherein one CCE comprises at least one Resource Element Group (REG) bundle, and one Resource Element Group (REG) bundle comprises at least one REG; determining a candidate physical downlink control channel, PDCCH, of the first control resource set according to the at least one CCE. The embodiment of the invention can configure the control resource set with larger time domain length.

Description

Method, apparatus, device and medium for determining physical downlink control channel

technical field

Embodiments of the present invention relate to the field of communications, and in particular, to a method, apparatus, device, and medium for determining a physical downlink control channel.

Background technique

A concept of a control resource set (Control resource set, Coreset) is introduced into a new air interface (New Radio, NR), and a Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH) is transmitted on the Coreset.

If NR operates in a high frequency band (such as 57-71GHz) and supports a large bandwidth carrier, the subcarrier spacing (SCS) currently used by FR2 (24250MHz-52600MHz, also known as Above-6GHz or millimeter wave), such as SCS is 60KHz/120KHz) is no longer applicable and a larger SCS needs to be introduced to reduce the required Fast Fourier Transformation (FFT) size. In this case, the length of each symbol decreases due to increasing SCS. If the maximum number of symbols configured by the Coreset remains unchanged, the absolute time of the Coreset will be reduced, thereby affecting the performance of the PDCCH transmitted on the Coreset.

In order to prevent the performance of the PDCCH transmitted on the Coreset from being affected, how to configure the Coreset with a larger time domain length is an urgent problem to be solved.

SUMMARY OF THE INVENTION

The embodiment of the present invention provides a method for determining a physical downlink control channel, so as to solve the problem that the solution of configuring a Coreset with a larger time domain length cannot be implemented at present.

In order to solve the above-mentioned technical problems, the present invention is achieved in this way:

In a first aspect, an embodiment of the present invention provides a method for determining a physical downlink control channel, including:

Perform CCE-to-REG mapping on the multiple resource element group REG bundles according to the numbers of the multiple resource element group REG bundles in the first control resource set and the size of the control channel element CCE, to obtain at least the first control resource set. one CCE, wherein one CCE includes at least one resource element group REG bundle, and one resource element group REG bundle includes at least one REG;

A candidate physical downlink control channel PDCCH of the first control resource set is determined according to the at least one CCE.

In a second aspect, an embodiment of the present invention provides an apparatus for determining a physical downlink control channel, including:

a first mapping module, configured to perform CCE-to-REG mapping on the multiple resource element group REG bundles according to the number of the multiple resource element group REG bundles and the control channel element CCE size in the first control resource set, to obtain the at least one CCE of the first control resource set, wherein one CCE includes at least one resource element group REG bundle, and one resource element group REG bundle includes at least one REG;

A channel determination module, configured to determine, according to the at least one CCE, a candidate physical downlink control channel PDCCH of the first control resource set.

In a third aspect, an embodiment of the present invention provides a network device, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program is executed by the processor The steps of implementing the method for determining the physical downlink control channel are implemented at the same time.

In a fourth aspect, an embodiment of the present invention provides a user equipment, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program is executed by the processor The steps of implementing the method for determining the physical downlink control channel are implemented at the same time.

In a fifth aspect, an embodiment of the present invention 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 method for determining the physical downlink control channel is implemented A step of.

In the embodiment of the present invention, by numbering the REG bundles of the first control resource set, and mapping the CCEs to the REGs according to the number of the REG bundles and the size of the CCEs, at least one CCE of the first control resource set is obtained, thereby determining the first control resource set. A candidate PDCCH for a control resource set. Therefore, the candidate PDCCH can be determined according to the above solution, so that a control resource set with a larger time domain length can be configured.

Description of drawings

1 shows an interaction diagram of a method for determining a physical downlink control channel according to an embodiment of the present invention;

2 shows a schematic flowchart of a method for determining a physical downlink control channel according to an embodiment of the present invention;

Fig. 3 shows the schematic diagram of REG numbering of an embodiment provided by the present invention;

FIG. 4 shows a schematic flowchart of a method for determining a physical downlink control channel according to another embodiment of the present invention;

5 shows a schematic flowchart of a method for determining a physical downlink control channel according to another embodiment of the present invention;

FIG. 6 shows a schematic flowchart of a method for determining a physical downlink control channel according to still another embodiment of the present invention;

7 shows a schematic flowchart of a method for determining a physical downlink control channel according to still another embodiment of the present invention;

8 shows a schematic structural diagram of an apparatus for determining a physical downlink control channel according to still another embodiment of the present invention;

FIG. 9 shows a schematic diagram of the hardware structure of a network device according to an embodiment of the present invention;

FIG. 10 shows a schematic diagram of a hardware structure of a user equipment according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to better illustrate the solution of the embodiment of the present invention, the Coreset configuration of the NR Rel15 is first described below.

In NR Rel15, Coreset is similar to the definition of LTE PDCCH control domain, which can be all or a part of PRB configured in BWP frequency domain. At the same time, the length of time (in symbols) that the Coreset lasts can be configured as 1, 2 or 3. At the same time, the resources related to Coreset are defined as follows:

Resource Element Group (REG): a resource element group that occupies one symbol in the time domain and one Physical Resource Block (PRB) in the frequency domain;

REG bundle (REG bundle): a combination of L REGs, L can be configured by the radio resource control (Radio Resource Control, RRC) parameter reg-bundle-size;

■For non-interleaved control channel element to resource element group mapping (CCE-to-REG mapping), L is fixed to 6;

■For interleaved CCE-to-REG mapping, when the number of Coreset symbols is configured as 1, L can be configured as 2 or 6; when the number of Coreset symbols is configured as 2 or 3, L can be configured as the number of Coreset symbols or 6;

● Control-channel element (Control-channel element, CCE): contains 6 REGs, and is mapped according to the following CCE-to-REG mapping rules.

CCE-to-REG mapping can be configured in interleaved or non-interleaved form, and is performed at the granularity of REG bundles according to the following rules:

● First, number the REGs according to the principle of first time domain from front to back, and then frequency domain from low to high;

The i-th REG bundle contains REG{i*L, i*L+1,...,i*L+L-1}, i=0,1,...,N _Coreset , where N _Coreset is the number of REGs configured by Coreset ;

· For CCE j, it contains REG bundle{f(6j/L),f(6j/L+1),...,f(6j/L+6/L-1)}

■ For non-interleaved CCE-to-REG mapping, L=6 and f(x)=x;

and

for

并且交织函数为■ For interleaved CCE-to-REG mapping, L∈{2,6}for

and

for

and the interleaving function is

x=cR+r

r=0,1,…,R-1

c=0,1,...,C-1

Among them, R is the interleaver size, which can be configured as 2, 3 or

6, and N _Coreset /(L*R) is an integer; n _shift ∈ {0,1,…,274} can be passed through high-level parameters

当高层参数precoderGranularity配置为sameAsREG-bundle时，用户设备(User Equipment，UE)假设在一个REG bundle内的预编码(precoding)相同；shiftIndex to configure, otherwise

When the high-layer parameter precoderGranularity is configured as sameAsREG-bundle, the user equipment (User Equipment, UE) assumes the same precoding (precoding) in one REG bundle;

When the high-layer parameter precoderGranularity is configured as allContiguousRBs, the UE assumes that the precoding on the continuous REGs in the coreset is the same, and the continuous REG is not the same as the Long Term Evolution (Long Term Evolution, LTE) Cell Reference Signal (Cell Reference Signal) configured in the case of any SSB or DSS Signal, CRS) resource elements (Resource element, RE) overlap.

For Coreset 0, the UE assumes interleaved coding, L=6, R=2,

Based on the configuration related information of the above control resource set, FIG. 1 shows an interaction diagram of a method for determining a physical downlink control channel according to an embodiment of the present invention. As shown in Figure 1, the method for determining the physical downlink control channel includes:

Step 101, the network device determines a candidate PDCCH according to the pre-configured information.

Wherein, the network device may include a base station. The pre-configuration information may include at least one of the following items: the number of symbols in the control resource set, the size of the REG bundle, the size of the CCE, the mapping mode of the CCE to the REG, and the mapping rule of the mapping mode.

Step 102, the network device uses one of the candidate PDCCHs to carry downlink control information (Downlink Control Information, DCI), and sends the DCI.

Step 103, the user equipment determines a candidate PDCCH according to the pre-configured information. The pre-configuration information may be configuration information sent by the user equipment to receive the network equipment.

The pre-configuration information may include at least one of the following items: the number of symbols in the control resource set, the size of the REG bundle, the size of the CCE, the mapping mode of the CCE to the REG, and the mapping rule of the mapping mode.

Step 104, the user equipment monitors the determined candidate PDCCHs to receive the DCI carried by one of the candidate PDCCHs.

Based on the above system architecture, FIG. 2 shows a schematic flowchart of a method for determining a physical downlink control channel according to an embodiment of the present invention. The method for determining the physical downlink control channel is applied to a network device (such as a base station). As shown in Figure 2, the method for determining the physical downlink control channel includes:

Step 201, the network device performs CCE-to-REG mapping on the multiple REG bundles according to the numbers of the multiple REG bundles in the first control resource set and the size of the control channel element CCE, to obtain at least one CCE of the first control resource set, wherein, One CCE includes at least one resource element group REG bundle, and one resource element group REG bundle includes at least one REG.

Step 202, the network device determines, according to at least one CCE, a candidate physical downlink control channel PDCCH of the first control resource set.

In the embodiment of the present invention, the network device numbers the REG bundles of the first control resource set, and performs mapping from CCEs to REGs according to the number of the REG bundles and the size of the CCEs to obtain at least one CCE of the first control resource set, thereby determining Candidate PDCCH for the first control resource set. Therefore, the candidate PDCCH can be determined according to the above solution, so that a control resource set with a larger time domain length can be configured.

Optionally, in one or more embodiments of the present invention, step 201 includes:

The network device performs CCE-to-REG mapping on the multiple REG bundles according to the mapping rule of the first pre-configured mode, the number of the multiple REG bundles and the CCE size of the control channel element;

The first pre-configured mode is one of the following: unified interleaving mode, unified non-interleaving mode, time-domain interleaving mode and frequency-domain non-interleaving mode, time-domain non-interleaving mode and frequency-domain non-interleaving mode, time-domain interleaving mode and frequency-domain non-interleaving mode Domain interleaving mode, time domain non-interleaving mode and frequency domain interleaving mode;

The unified interleaving mode is a CCE-to-REG mapping mode for interleaving the numbers of multiple REG bundles; the unified non-interleaving mode is a CCE-to-REG mapping mode for non-interleaving the numbers of multiple REG bundles.

In this embodiment of the present invention, in order to prevent the performance of the PDCCH transmitted on the control resource set from being affected, a control resource set with a larger time domain length may be configured. If a control resource set with a larger time domain length is configured, a time division multiplexing (TDM) REG bundle may appear in the control resource set. For example, REG0 and REG1 in Figure 3 are one REG bundle, REG2 and REG2 and REG3 is another REG bundle. Since the two REG bundles belong to the same frequency domain, the two REG bundles are TDM REG bundles. When the REG bundle of the TDM appears in the control resource set, the REG bundle in the control resource set may be processed according to the solution of the embodiment of the present invention. Therefore, a TDM REG bundle may appear in the control resource set in this embodiment of the present invention, so that a control resource set with a larger time domain length can be configured.

Optionally, in one or more embodiments of the present invention, the mapping rule of the unified interleaving mode is related to at least one of the following: the number of REG bundles of time division multiplexing TDM in the first control resource set, which is preconfigured or predefined The uniform interleaving size, the pre-configured or predefined number of REG bundles included in each CCE in the time domain, and the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the unified non-interleaving mode is related to at least one of the following: the number of REG bundles in the TDM in the first control resource set, the pre-configured or pre-defined number of REG bundles included in each CCE in the time domain, the pre-configured or pre-defined number of REG bundles in the TDM The predefined number of REG bundles contained in each CCE in the frequency domain;

The mapping rule of the time domain interleaving mode is related to one or more of the following factors: the number of TDM REG bundles in the first control resource set, the preconfigured or predefined time domain interleaving size, the preconfigured or predefined time domain interleaving size of each CCE The number of REG bundles contained in the time domain, the pre-configured or predefined number of REG bundles contained in each CCE in the frequency domain;

The mapping rule of the frequency domain interleaving mode is related to one or more of the following factors: the number of TDM REG bundles in the first control resource set, the preconfigured or predefined frequency domain interleaving size, the preconfigured or predefined frequency domain interleaving size of each CCE in the first control resource set. The number of REG bundles contained in the time domain, the pre-configured or predefined number of REG bundles contained in each CCE in the frequency domain;

The mapping rule of the time-domain non-interleaving mode is related to one or more of the following factors: the number of TDM REG bundles in the first control resource set, the pre-configured or predefined number of REG bundles included in each CCE in the time domain, The preconfigured or predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the frequency-domain non-interleaving mode is related to one or more of the following factors: the number of REG bundles of TDM in the first control resource set, the pre-configured or predefined number of REG bundles included in each CCE in the time domain, The preconfigured or predefined number of REG bundles included in each CCE in the frequency domain.

It should be noted that, the mapping rule in this embodiment of the present invention may include a mapping function or an interleaving function.

Optionally, in one or more embodiments of the present invention, the numbering rule of the REGs of the first control resource set is:

Number the REGs in the lowest frequency domain in the first control resource set in turn in the order of time domain; according to the order of the frequency domain of the first control resource set from low to high, the next frequency domain of the first control resource set is numbered. The REGs of the first control resource set are numbered sequentially in the time domain sequence, until the numbering of all the REGs in the first control resource set is completed.

In this way, the REGs of the first control resource set are combined according to the number of the REGs and the size of the REG bundle in the first control resource set to form a plurality of REG bundles of the first control resource set.

For example, referring to FIG. 3 , the REGs with the lowest frequency domain are numbered first, and the numbers are REG0 to REG11. Then, on the basis of the numbering REG11, the REGs with the next lowest frequency domain continue to be numbered, which are numbered REG12 to REG23. And so on until all REG numbering for the first control resource set is completed.

The REG bundles can be uniformly numbered in the manner of first frequency domain and then time domain, or first time domain and then frequency domain.

details as follows:

Optionally, in one or more embodiments of the present invention, the numbering rules of the multiple resource element group REG bundles in the first control resource set are:

Number the REG bundles in the lowest frequency domain in the first control resource set in sequence in the time domain sequence; according to the frequency domain of the first control resource set from low to high, the next frequency domain of the first control resource set The REG bundles above are sequentially numbered in the time domain sequence until all REG bundles in the first control resource set are numbered. Among them, a REG bundle can have a number.

For example, when the numbering result of the REGs in the first control resource set is shown in Figure 3, and the size of the REG bundle is 2 REGs in the time domain, the 6 REG bundles formed by the combination of REG0 to REG11 are numbered first, that is, REG0 The REG bundle formed by combining with REG1 is numbered REG bundle 0, the REG bundle formed by combining REG2 and REG3 is numbered REG bundle 1... The REG bundle formed by combining REG10 and REG11 is numbered REG bundle 5.

The six REG bundles formed by the combination of REG12 to REG23 are numbered, which are REG bundle 6 to REG bundle 10 respectively. By analogy, the 36 REG bundles formed by the combination of REG0 to REG71 are numbered, which are REG bundle 0 to REG bundle 35 respectively.

Optionally, in one or more embodiments of the present invention, the numbering rules of the multiple resource element group REG bundles in the first control resource set are:

The REG bundles in the highest frequency domain in the first control resource set are numbered in sequence in the time domain order; according to the order of the frequency domain of the first control resource set from high to low, the next frequency domain of the first control resource set is numbered. The REG bundles on the domain are sequentially numbered in the time domain sequence until all REG bundles of the first control resource set are numbered.

For example, when the numbering result of the REGs in the first control resource set is shown in FIG. 3 , and the size of the REG bundle is 2 REGs in the time domain, all REG bundles in the highest frequency domain in the first control resource set are sorted in order. Numbering is performed in time domain order, that is, the 6 REG bundles formed by the combination of REG60 to REG71 are numbered, so that the REG bundle formed by combining REG60 and REG61 is numbered as REG bundle 0, and the REG bundle formed by combining REG62 and REG63 is numbered as REG Bundle 1...The REG bundle formed by combining REG70 and REG71 is numbered REG bundle 5.

The six REG bundles formed by the combination of REG48 to REG59 are numbered, which are REG bundle 6 to REG bundle 10 respectively. By analogy, the 36 REG bundles formed by the combination of REG0 to REG71 are numbered, which are REG bundle 0 to REG bundle 35 respectively.

Optionally, in one or more embodiments of the present invention, the numbering rules of the multiple resource element group REG bundles in the first control resource set are:

The REG bundles in the first control resource set in the time domain are numbered in sequence from low to high in the frequency domain; according to the time domain order of the first control resource set, the next The REG bundles in a time domain are sequentially numbered in the frequency domain from low to high until all REG bundles in the first control resource set are numbered. Among them, a REG bundle can have a number.

For example, when the numbering result of the REGs in the first control resource set is shown in FIG. 3, and the REG bundle size is 2 REGs in the time domain, starting from the first time domain of the first control resource set, the first Each REG bundle in the time domain is numbered, and the REG bundle formed by REG0 and REG1 is numbered as REG bundle 0; the REG bundle formed by REG12 and REG13 is numbered as REG bundle 1... The REG bundle formed by REG60 and REG61 is numbered as REG bundle 5.

After the REG bundles in the first time domain are numbered, the REG bundles in the second time domain are numbered. The numbering method of the REG bundles in the second time domain is similar to that of the REG bundles in the first time domain. The numbering of the REG bundles in the second time domain is not repeated here.

According to the above-mentioned numbering rule, it is possible to sequentially number the REG bundles in the first time domain to the REG bundles in the sixth time domain.

Optionally, in one or more embodiments of the present invention, the numbering rules of the multiple resource element group REG bundles in the first control resource set are:

The REG bundles in the first control resource set in the time domain are numbered in sequence from high to low in the frequency domain; according to the time domain sequence of the first control resource set, the lower Each REG bundle in a time domain is sequentially numbered from high to low in the frequency domain until all REG bundles in the first control resource set are numbered.

For example, when the numbering result of the REGs in the first control resource set is shown in FIG. 3, and the REG bundle size is 2 REGs in the time domain, starting from the first time domain of the first control resource set, the first Each REG bundle in the time domain is numbered, and the REG bundle formed by REG60 and REG61 is numbered as REG bundle 0; the REG bundle formed by REG48 and REG49 is numbered as REG bundle 1... The REG bundle formed by REG0 and REG1 is numbered as REG bundle 5.

After the REG bundles in the first time domain are numbered, the REG bundles in the second time domain are numbered. The numbering method of the REG bundles in the second time domain is similar to that of the REG bundles in the first time domain. The numbering of the REG bundles in the second time domain is not repeated here.

According to the above-mentioned numbering rule, it is possible to sequentially number the REG bundles in the first time domain to the REG bundles in the sixth time domain.

Optionally, in one or more embodiments of the present invention, step 201 includes:

The network device performs CCE-to-REG mapping on the multiple REG bundles according to the mapping rule of the second pre-configuration mode, the mapping rule of the third pre-configuration mode, the number of the multiple REG bundles and the CCE size of the control channel element;

Wherein, the second pre-configuration mode is a time-domain interleaving mode or a time-domain non-interleaving mode, and the third pre-configuration mode is a frequency-domain interleaving mode or a frequency-domain non-interleaving mode.

In this embodiment of the present invention, in order to prevent the performance of the PDCCH transmitted on the control resource set from being affected, a control resource set with a larger time domain length may be configured. If a control resource set with a larger time domain length is configured, a TDM REG bundle may appear in the control resource set. When the REG bundle of the TDM appears in the control resource set, the REG bundle in the control resource set may be processed according to the solution of the embodiment of the present invention. Therefore, a TDM REG bundle may appear in the control resource set in this embodiment of the present invention, so that a control resource set with a larger time domain length can be configured.

Optionally, in one or more embodiments of the present invention, the mapping rule of the time domain interleaving mode is related to at least one of the following: the number of TDM REG bundles in the first control resource set, the configuration or the predefined time domain Interleaving size, the pre-configured or predefined number of REG bundles included in each CCE in the time domain, and the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the frequency-domain interleaving mode is related to at least one of the following: the number of TDM REG bundles in the first control resource set, the configured or predefined frequency-domain interleaving size, the pre-configured or predefined time domain of each CCE The number of REG bundles included, the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the time-domain non-interleaving mode is related to at least one of the following: the number of REG bundles for time division multiplexing TDM in the first control resource set, the pre-configured or predefined number of REG bundles included in each CCE in the time domain , the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the frequency-domain non-interleaving mode is related to at least one of the following: the number of REG bundles in the time division multiplexed TDM in the first control resource set, the pre-configured or predefined number of REG bundles included in each CCE in the time domain , the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain.

Optionally, in one or more embodiments of the present invention, the number of each REG bundle in the first control resource set includes a time domain number and a frequency domain number.

Optionally, in one or more embodiments of the present invention, before step 201, the method for determining the physical downlink control channel further includes:

The network device obtains multiple REG bundles according to the size of the REG bundle and the REGs of the first control resource set. Specifically, the REGs of the first control resource set are combined according to the size of the REG bundle to form multiple REG bundles.

The REG bundle size is related to the number of symbols in the first control resource set (ie, the time domain length of the first control resource set).

In this embodiment of the present invention, the REG bundle size can be obtained according to the number of symbols in the first control resource set. Therefore, even if a control resource set with a larger time domain length is configured, it is possible to avoid the occurrence of TDM REG bundles in the first control resource set, thereby avoiding the occurrence of TDM CCEs in the first control resource set. Therefore, in this embodiment of the present invention, a control resource set with a larger time domain length can be configured.

Optionally, in one or more embodiments of the present invention, the REG bundle size is greater than or equal to the time domain length for which the first control resource set lasts.

Optionally, in one or more embodiments of the present invention, the size of the control channel element CCE is related to the number of symbols in the first control resource set.

In the embodiment of the present invention, the CCE size can be obtained according to the number of symbols in the control resource set. Therefore, even if a control resource set with a larger time domain length is configured, the occurrence of TDM CCEs in the control resource set can be avoided. Therefore, in this embodiment of the present invention, a control resource set with a larger time domain length can be configured.

Optionally, in one or more embodiments of the present invention, the REG beam size is configured in time domain and/or frequency domain. For example, the REG bundle size is configured as 2 in the time domain, so one REG bundle can be REG0 and REG1 in FIG. 3 . For another example, the size of the REG bundle is configured as 2 according to the frequency domain, so one REG bundle may be REG0 and REG12 in FIG. 3 . For another example, the REG bundle size is configured as 2 in the frequency domain and 2 in the time domain, so one REG bundle may be REG0, REG1, REG12 and REG13 in FIG. 3 .

Optionally, in one or more embodiments of the present invention, before step 201, the method for determining the physical downlink control channel further includes:

The network device divides the second control resource set into a plurality of first control resource sets according to the configuration information of the second control resource set.

In the embodiment of the present invention, the second control resource set configured with a larger time domain length can be divided into multiple first control resource sets, so as to avoid the occurrence of TDM REG bundles in the first control resource set. Therefore, in this embodiment of the present invention, a control resource set with a larger time domain length can be configured.

Optionally, in one or more embodiments of the present invention, the REG numbering rules for the multiple first control resource sets are: for each first control resource set, the first control resource set starts from the first reservation number. The REG of the set is numbered.

For example, the second control resource set is divided into 6 first control resource sets, which are Sub-coreset 0 to Sub-coreset 5 respectively. The 10 REGs of Sub-coreset 0 are numbered REG0 to REG9. The 10 REGs of Sub-coreset 1 are numbered REG0 to REG9. By analogy, the 10 REGs of Sub-coreset 5 are numbered as REG0 to REG9.

Optionally, in one or more embodiments of the present invention, the numbering rule of the REG bundles of the multiple first control resource sets is: for each first control resource set, the first control resource set starts from the second reservation number. The REG bundles that control the resource set are numbered.

Optionally, in one or more embodiments of the present invention, the configuration information of the second control resource set includes the total number of first control resource sets into which the second control resource set is to be divided and/or one first control resource set number of symbols.

Optionally, in one or more embodiments of the present invention, the configuration information of the second control resource set includes the number of symbols of the second control resource set;

The network device divides the second control resource set into multiple first control resource sets according to the configuration information of the second control resource set, including:

The network device determines, according to the number of symbols in the second control resource set, the total number of first control resource sets into which the second control resource set is to be divided and/or the number of symbols in one first control resource set;

The network device divides the first control resource set into multiple first control resource sets according to the total number of first control resource sets and/or the number of symbols in one first control resource set.

Optionally, in one or more embodiments of the present invention, step 202 includes:

The candidate physical downlink control channel PDCCH is determined according to the numbers of the CCEs in the multiple first control resource sets, wherein the numbers of any two CCEs in the multiple first control resource sets are different.

Optionally, in one or more embodiments of the present invention, the numbering rules of the CCEs of the multiple first control resource sets include:

Executing the numbering step: sequentially numbering the jth CCE in the multiple first control resource sets according to the order of the multiple first control resource sets;

After finishing the numbering of the jth CCE in the last first control resource set, use the number of the jth CCE in the last first control resource set as the starting point of the next numbering, j=j+1, and return the execution number Steps until all CCEs in the multiple first control resource sets are numbered; j∈[1, a]; a represents the number of CCEs in a first control resource set.

For example, the second control resource set is divided into 6 first control resource sets, which are respectively Sub-coreset 0 to Sub-coreset 5, and each Sub-coreset has 8 CCEs, for a total of 48 CCEs. Then in the order of Sub-coreset 0 to Sub-coreset 5, number the first CCE of Sub-coreset 0 to Sub-coreset 5, and then number the second CCE of Sub-coreset 0 to Sub-coreset 5 ...number the eighth CCE of Sub-coreset 0 to Sub-coreset 5.

The results of the CCE numbers for Sub-coreset 0 to Sub-coreset 5 are as follows:

Sub-coreset 0 corresponds to CCE{0, 6, 12, 18, 24, 30, 36, 42}

Sub-coreset 1 corresponds to CCE {1, 7, 13, 19, 25, 31, 37, 43}

Sub-coreset 2 corresponds to CCE {2, 8, 14, 20, 26, 32, 38, 44}

…

Sub-coreset 5 corresponds to CCE {5, 11, 17, 23, 29, 35, 41, 47}

It can be seen that the number of the first CCE of Sub-coreset 0 is 0, the number of the first CCE of Sub-coreset 1 is 1, and the number of the first CCE of Sub-coreset 2 is 2...Sub-coreset 5 The number of the first CCE is 5.

The second CCE of Sub-coreset 0 is numbered 6, the second CCE of Sub-coreset 1 is numbered 7, the second CCE of Sub-coreset 2 is numbered 8... The second CCE of Sub-coreset 5 The number of CCE is 11. By analogy, the number of each CCE of each Sub-coreset 0 is obtained.

In the embodiment of the present invention, the CCEs of multiple first control resource sets are numbered in the above-mentioned manner, so that the same candidate PDCCH comes from different first control resource sets, so that the adjacent numbered CCEs are far apart, which can improve the first control resource set. Controls the PDCCH performance for transmission on the resource set.

Optionally, in one or more embodiments of the present invention, step 202 includes:

The network device combines at least one CCE of the first control resource set to obtain at least one CCE group, wherein one CCE group includes at least one CCE;

Mapping the PDCCH to the CCE group is performed on at least one CCE group to obtain a candidate physical downlink control channel PDCCH.

Wherein, if there are multiple first control resource sets, the CCEs of each first control resource set are combined, so that each first control resource set has a CCE group.

The present invention provides a method for determining a physical downlink control channel applied to a user equipment according to an embodiment, and the method for determining a physical downlink control channel includes:

The user equipment performs CCE-to-REG mapping on the multiple resource element group REG bundles according to the number of the multiple resource element group REG bundles and the control channel element CCE size of the first control resource set, to obtain at least one CCE of the first control resource set , wherein one CCE includes at least one resource element group REG bundle, and one resource element group REG bundle includes at least one REG;

The user equipment determines, according to at least one CCE, a candidate physical downlink control channel PDCCH of the first control resource set.

In the embodiment of the present invention, the user equipment numbers the REG bundles of the first control resource set, performs CCE-to-REG mapping according to the number of the REG bundles and the size of the CCE, and obtains at least one CCE of the first control resource set, thereby determining Candidate PDCCH for the first control resource set. Therefore, the candidate PDCCH can be determined according to the above solution, so that a control resource set with a larger time domain length can be configured.

Optionally, in one or more embodiments of the present invention, the user equipment performs processing on the multiple resource element group REG bundles according to the number of the multiple resource element group REG bundles and the control channel element CCE size of the first control resource set. CCE to REG mapping, including:

The user equipment performs CCE-to-REG mapping on the multiple resource element group REG bundles according to the mapping rule of the first preconfigured mode, the number of the multiple resource element group REG bundles and the control channel element CCE size;

The first pre-configured mode is one of the following: unified interleaving mode, unified non-interleaving mode, time-domain interleaving mode and frequency-domain non-interleaving mode, time-domain non-interleaving mode and frequency-domain non-interleaving mode, time-domain interleaving mode and frequency-domain non-interleaving mode Domain interleaving mode, time domain non-interleaving mode and frequency domain interleaving mode;

The unified interleaving mode is a CCE-to-REG mapping mode that interleaves the numbers of multiple resource element groups REG bundles; the unified non-interleaving mode is a CCE-to-REG mapping mode that performs non-interleaving CCE-to-REG mappings for the numbers of multiple resource element groups REG bundles.

Optionally, in one or more embodiments of the present invention, the mapping rule of the unified interleaving mode is related to at least one of the following: the number of REG bundles of time division multiplexing TDM in the first control resource set, which is preconfigured or predefined The uniform interleaving size, the pre-configured or predefined number of REG bundles included in each CCE in the time domain, and the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the unified non-interleaving mode is related to at least one of the following: the number of REG bundles in the TDM in the first control resource set, the pre-configured or pre-defined number of REG bundles included in each CCE in the time domain, the pre-configured or pre-defined number of REG bundles in the TDM The predefined number of REG bundles contained in each CCE in the frequency domain;

The mapping rule of the time domain interleaving mode is related to one or more of the following factors: the number of TDM REG bundles in the first control resource set, the preconfigured or predefined time domain interleaving size, the preconfigured or predefined time domain interleaving size of each CCE The number of REG bundles contained in the time domain, the pre-configured or predefined number of REG bundles contained in each CCE in the frequency domain;

The mapping rule of the frequency domain interleaving mode is related to one or more of the following factors: the number of TDM REG bundles in the first control resource set, the preconfigured or predefined frequency domain interleaving size, the preconfigured or predefined frequency domain interleaving size of each CCE in the first control resource set. The number of REG bundles contained in the time domain, the pre-configured or predefined number of REG bundles contained in each CCE in the frequency domain;

The mapping rule of the time-domain non-interleaving mode is related to one or more of the following factors: the number of TDM REG bundles in the first control resource set, the pre-configured or predefined number of REG bundles included in each CCE in the time domain, The preconfigured or predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the frequency-domain non-interleaving mode is related to one or more of the following factors: the number of REG bundles of TDM in the first control resource set, the pre-configured or predefined number of REG bundles included in each CCE in the time domain, The preconfigured or predefined number of REG bundles included in each CCE in the frequency domain.

Optionally, in one or more embodiments of the present invention, the numbering rules for the REG bundles of multiple resource element groups are:

Number the resource element group REG bundles in the lowest frequency domain in the first control resource set in turn according to the time domain sequence; according to the frequency domain of the first control resource set from low to high Each resource element group REG bundle in a frequency domain is sequentially numbered in the time domain sequence, until all resource element group REG bundles of the first control resource set are numbered;

or,

Number each resource element group REG bundle in the highest frequency domain in the first control resource set in turn in the time domain sequence; according to the frequency domain of the first control resource set from high to low Each resource element group REG bundle in the next frequency domain is sequentially numbered in the time domain sequence, until all resource element group REG bundles in the first control resource set are numbered;

or,

Number each resource element group REG bundle in the first control resource set in the first time domain in sequence from low to high in the frequency domain; according to the time domain sequence of the first control resource set, the first control resource Each resource element group REG bundle in the next time domain of the set is numbered in sequence from low to high in the frequency domain, until all resource element group REG bundles of the first control resource set are numbered;

Number each resource element group REG bundle in the first control resource set in the time domain in sequence from high to low in the frequency domain; according to the time domain sequence of the first control resource set, the first control resource Each resource element group REG bundle in the next time domain of the set is sequentially numbered from high to low in the frequency domain, until all resource element group REG bundles of the first control resource set are numbered.

Optionally, in one or more embodiments of the present invention, the user equipment performs processing on the multiple resource element group REG bundles according to the number of the multiple resource element group REG bundles and the control channel element CCE size of the first control resource set. CCE to REG mapping, including:

The user equipment performs CCE-to-REG mapping on multiple resource element group REG bundles according to the mapping rules of the second pre-configuration mode, the mapping rules of the third pre-configuration mode, the numbers of the REG bundles of the multiple resource element groups, and the CCE size of the control channel element. map;

Wherein, the second pre-configuration mode is a time-domain interleaving mode or a time-domain non-interleaving mode, and the third pre-configuration mode is a frequency-domain interleaving mode or a frequency-domain non-interleaving mode.

Optionally, in one or more embodiments of the present invention, the mapping rule of the time domain interleaving mode is related to at least one of the following: the number of TDM REG bundles in the first control resource set, the configuration or the predefined time domain Interleaving size, the pre-configured or predefined number of REG bundles included in each CCE in the time domain, and the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the frequency-domain interleaving mode is related to at least one of the following: the number of TDM REG bundles in the first control resource set, the configured or predefined frequency-domain interleaving size, the pre-configured or predefined time domain of each CCE The number of REG bundles included, the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the time-domain non-interleaving mode is related to at least one of the following: the number of REG bundles for time division multiplexing TDM in the first control resource set, the pre-configured or predefined number of REG bundles included in each CCE in the time domain , the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the frequency-domain non-interleaving mode is related to at least one of the following: the number of REG bundles in the time division multiplexed TDM in the first control resource set, the pre-configured or predefined number of REG bundles included in each CCE in the time domain , the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain.

Optionally, in one or more embodiments of the present invention, the number of each resource element group REG bundle in the multiple resource element group REG bundles includes a time domain number and a frequency domain number.

Optionally, in one or more embodiments of the present invention, the user equipment performs processing on the multiple resource element group REG bundles according to the number of the multiple resource element group REG bundles and the control channel element CCE size of the first control resource set. Before the mapping of the CCE to the REG, the method for determining the physical downlink control channel further includes:

The user equipment determines multiple resource element group REG bundles according to the REG bundle size and the REGs of the first control resource set;

The REG bundle size is related to the number of symbols in the first control resource set.

Optionally, in one or more embodiments of the present invention, the size of the control channel element CCE is related to the number of symbols in the first control resource set.

Optionally, in one or more embodiments of the present invention, the REG beam size is configured in time domain and/or frequency domain.

Optionally, in one or more embodiments of the present invention, the user equipment performs processing on the multiple resource element group REG bundles according to the number of the multiple resource element group REG bundles and the control channel element CCE size of the first control resource set. Before the mapping of the CCE to the REG, the method for determining the physical downlink control channel further includes:

The user equipment divides the second control resource set into multiple first control resource sets according to the configuration information of the second control resource set.

Optionally, in one or more embodiments of the present invention, the configuration information of the second control resource set includes the total number of first control resource sets into which the second control resource set is to be divided and/or one first control resource set number of symbols.

Optionally, in one or more embodiments of the present invention, the configuration information of the second control resource set includes the number of symbols of the second control resource set;

The user equipment divides the second control resource set into multiple first control resource sets according to the configuration information of the second control resource set, including:

The user equipment determines, according to the number of symbols in the second control resource set, the total number of first control resource sets into which the second control resource set is to be divided and/or the number of symbols in one first control resource set;

The user equipment divides the first control resource set into multiple first control resource sets according to the total number of first control resource sets and/or the number of symbols in one first control resource set.

Optionally, in one or more embodiments of the present invention, the user equipment determines the candidate physical downlink control channel PDCCH of the first control resource set according to at least one CCE, including:

The user equipment determines the candidate physical downlink control channel PDCCH according to the numbers of the CCEs of the multiple first control resource sets.

Wherein, the numbers of any two CCEs in the multiple first control resource sets are different.

Optionally, in one or more embodiments of the present invention, the numbering rules of the CCEs of the multiple first control resource sets include:

The user equipment performs the numbering step: sequentially numbering the jth CCE in the plurality of first control resource sets according to the order of the plurality of first control resource sets;

After completing the numbering of the jth CCE in the last first control resource set, the user equipment uses the number of the jth CCE in the last first control resource set as the starting point of the next numbering, j=j+1, and returns The numbering step is performed until all CCEs in the multiple first control resource sets are numbered; j∈[1, a]; a represents the number of CCEs in one first control resource set.

Optionally, in one or more embodiments of the present invention, the user equipment determines the candidate physical downlink control channel PDCCH of the first control resource set according to at least one CCE, including:

The user equipment combines at least one CCE of the first control resource set to obtain at least one CCE group, wherein one CCE group includes at least one CCE;

The user equipment performs PDCCH to CCE group mapping on at least one CCE group to obtain a candidate physical downlink control channel PDCCH.

Since the method for determining the physical downlink control channel applied to the network device is similar to the method for determining the physical downlink control channel applied to the user equipment, and the method for determining the physical downlink control channel applied to the network device has been described in detail above, therefore, in The relevant content of the method for determining the physical downlink control channel applied to the user equipment will not be repeated here.

The embodiments of the present invention will be further described below through four embodiments.

Example 1

FIG. 4 shows a schematic flowchart of a method for determining a physical downlink control channel according to another embodiment of the present invention. As shown in Figure 4, the method for determining the physical downlink control channel includes:

Step 301, the network device numbers the REGs of the Coreset.

Optionally, the REGs in the Coreset may be numbered according to the principle of time domain priority and frequency domain from low to high. For example, the numbering of REGs in the Coreset is shown in Figure 3.

Step 302, the network device combines the REGs of the Coreset according to the number of the REGs of the Coreset, the configuration or the predefined REG bundle size L, to form multiple REG bundles of the Coreset, one REG bundle includes L REGs; the REG bundle size L can be Configured separately in time domain and/or frequency domain.

Step 303, the network device numbers multiple REG bundles of the Coreset, wherein one REG bundle has one number.

In step 303, the network device may uniformly number the REG bundles in a manner of first frequency domain and then time domain, or first time domain and then frequency domain. details as follows:

Step 303 includes: the network device sequentially numbering the REG bundles in the lowest frequency domain in the Coreset in the order of time domain; according to the order of the frequency domain of the Coreset from low to high, the REG bundles in the next frequency domain of the Coreset are sequentially numbered. Numbering is performed sequentially in time domain until all REG bundles of the Coreset are numbered.

Or, step 303 includes: the network device sequentially numbers the REG bundles in the highest frequency domain in the Coreset in the order of time domain; The REG bundles are numbered sequentially in time domain order until all REG bundles of the Coreset are numbered.

Or, step 303 includes: the network device sequentially numbers the REG bundles in the first time domain in the Coreset in the order from low to high in the frequency domain; The REG bundles of the coreset are numbered sequentially from low to high in the frequency domain, until all the REG bundles of the Coreset are numbered.

Or, step 303 includes: the network device numbers the REG bundles in the first time domain in the Coreset in sequence from high to low in the frequency domain; The REG bundles of the coreset are numbered sequentially from high to low in the frequency domain, until all the REG bundles of the Coreset are numbered.

Step 304 , the network device performs CCE-to-REG mapping on the REG bundle of the Coreset according to the mapping rule of the first pre-configuration mode, the number of the REG bundle of the Coreset and the configuration or predefined CCE size to obtain at least one CCE of the Coreset. The mapping rules of the first preconfigured mode may include an interleaving function (or mapping function) and predefined rules other than the interleaving function (or mapping function).

The first pre-configured mode is one of the following: unified interleaving mode, unified non-interleaving mode, time-domain interleaving mode and frequency-domain non-interleaving mode, time-domain non-interleaving mode and frequency-domain non-interleaving mode, time-domain interleaving mode and frequency-domain non-interleaving mode Domain interleaving mode, time domain non-interleaving mode and frequency domain interleaving mode.

Step 305, the network device determines a candidate PDCCH according to at least one CCE of the Coreset. Thus, the network device uses one of the candidate PDCCHs to carry the DCI, and transmits the DCI.

It can be seen that, in the embodiment of the present invention, the REG bundle of the TDM in the Coreset is considered to perform the mapping from the CCE to the REG. The REG bundle included in each CCE and the unified REG bundle number are mapped according to a specific unified interleaving (or mapping) function/predefined rule, and the interleaving (or mapping) function/predefined rule configured for different modes is different.

■Configurable to one of the following modes:

◆Uniform interleaving mode

◆Uniform non-interleaving mode

◆Time domain interleaving mode + frequency domain non-interleaving mode

◆Time domain non-interleaving mode + frequency domain non-interleaving mode

◆Time domain interleaving mode + frequency domain interleaving mode

◆Time domain non-interleaving mode + frequency domain interleaving mode

■ The unified interleaving (or mapping) function/predefined rule is related to one or more of the following factors:

◆Number of REG bundles of TDM

◆Configured or predefined uniform interleaving size

◆Configured or predefined time domain interleaving size

配置或者预定义的频域交织大小

Configured or predefined frequency domain interleaving size

配置或者预定义的每个CCE时域包含的REG bundle个数

Configured or predefined number of REG bundles included in each CCE time domain

配置或者预定义的每个CCE频域包含的REG bundle个数

Configured or predefined number of REG bundles included in each CCE frequency domain

In this embodiment of the present invention, optionally, in step 305, PDCCH-to-CCEmapping is performed considering the CCE of the TDM. For example, PDCCH-to-CCE group mapping is performed on a CCE combination including multiple CCEs.

The method for determining the physical downlink control channel shown in FIG. 4 is further described below through a specific example.

其中，

可以配置为6或12。Coreset的频域宽度(以PRB为单位)配置为

并且各参数按照如下定义：The time domain length (in symbols) for which the Coreset persists is configured as

in,

Can be configured to 6 or 12. The frequency domain width (in PRB) of the Coreset is configured as

And each parameter is defined as follows:

Resource Element Group (REG): A resource element group that occupies 1 symbol in the time domain and 1 PRB in the frequency domain, the configured Coreset contains

REG bundle: a combination of L REGs

· Control-channel element (CCE): contains M REGs (for example, the protocol is fixed to 6), and is mapped according to the following CCE-to-REG mapping rules.

CCE-to-REG mapping can be configured in interleaved or non-interleaved form, and is performed at the granularity of REG bundles according to the following rules:

· First, the REGs are numbered according to the principle of first in the time domain from front to back, and then in the frequency domain from low to high. Specifically, starting from the lowest frequency domain of the Coreset, the REGs in the same frequency domain in the Coreset are numbered in sequence in the time domain order, and the REGs in the next frequency domain of the Coreset are sequentially numbered in the order of the frequency domain of the Coreset from low to high. Numbering is performed sequentially in the time domain until all REGs of the Coreset are numbered.

则REG的编号如下图3所示。For example, if

Then the numbering of the REG is shown in Figure 3 below.

The i-th REG bundle contains REG{i*L, i*L+1,...,i*L+L-1}, i=0,1,...,N _Coreset /L-1, where N _Coreset is Coreset The number of REGs configured;

For example, assuming L=2, the 0th REG bundle contains {REG0, REG1}, the 1st REG bundle contains {REG2, REG3}, ...

Obtain the REG bundle number contained in the jth CCE according to the different modes and interleaving functions configured, and assume that the size of the time-domain REG bundle contained in a CCE is predefined as 1:

■When configured in time-domain non-interleaving and frequency-domain non-interleaving modes

◆CCE 0->REG bundle{0,6,12}->REG{0,1,12,13,24,25}

◆CCE 1->REG bundle{18,24,30}->REG{36,37,48,49,60,61}

◆CCE 2->REG bundle{1,7,13}->REG{2,3,14,15,26,27}

◆…

■When configured as time domain interleaving (interleaving size is 3) and frequency domain non-interleaving mode

◆CCE 0->REG bundle{0,6,12}->REG{0,1,12,13,24,25}

◆CCE 1->REG bundle{18,24,30}->REG{36,37,48,49,60,61}

◆CCE 2->REG bundle{2,8,14}->REG{4,5,14,15,26,27}

◆…

The above is a method for determining a physical downlink control channel applied to a network device. Correspondingly, the present invention provides an embodiment of a method for determining a physical downlink control channel applied to a user equipment. The method for determining the physical downlink control channel applied to the user equipment includes:

The user equipment numbers the REGs of the Coreset.

The user equipment combines the REGs of the Coreset according to the number of the REGs of the Coreset, configured or a predefined REG bundle size L, to form multiple REG bundles of the Coreset. One REG bundle includes L REGs; the REG bundle size L can pass through the time domain. and/or frequency domain are configured separately.

The user equipment numbers multiple REG bundles of the Coreset, wherein one REG bundle has one number. Wherein, the user equipment may uniformly number the REG bundles in a manner of first frequency domain and then time domain, or first time domain and then frequency domain.

The user equipment performs CCE-to-REG mapping on the REG bundle of the Coreset according to the mapping rule of the first pre-configuration mode, the number of the REG bundle of the Coreset and the configured or predefined CCE size, to obtain at least one CCE of the Coreset. The mapping rules of the first preconfigured mode may include an interleaving function (or mapping function) and predefined rules other than the interleaving function (or mapping function). The first pre-configured mode is one of the following: unified interleaving mode, unified non-interleaving mode, time-domain interleaving mode and frequency-domain non-interleaving mode, time-domain non-interleaving mode and frequency-domain non-interleaving mode, time-domain interleaving mode and frequency-domain non-interleaving mode Domain interleaving mode, time domain non-interleaving mode and frequency domain interleaving mode.

The user equipment determines a candidate PDCCH according to at least one CCE of the Coreset. Thus, the user equipment can monitor the determined candidate PDCCHs to receive the DCI carried by one of the candidate PDCCHs.

Since the method for determining the physical downlink control channel applied to the user equipment in this embodiment is similar to the method for determining the physical downlink control channel applied to the network device, and the physical downlink control channel applied to the network device has been described in detail in this embodiment How to determine the channel. Therefore, the relevant content of the method for determining the physical downlink control channel applied to the user equipment will not be repeated here.

Embodiment 2

FIG. 5 shows a schematic flowchart of a method for determining a physical downlink control channel according to another embodiment of the present invention. As shown in Figure 5, the method for determining the physical downlink control channel includes:

Step 401, the network device numbers the REGs of the Coreset.

Optionally, the network device numbers the REGs in the Coreset according to the principle of priority in the time domain and from low to high in the frequency domain.

Step 402, the network device combines the REGs of the Coreset according to the number of the REGs of the Coreset, the configuration or the predefined REG bundle size L, to form multiple REG bundles of the Coreset, one REG bundle includes L REGs; the REG bundle size L can be Configured separately in time domain and/or frequency domain.

Step 403, the network device performs time domain numbering and frequency domain numbering on multiple REG bundles of the Coreset, wherein one REG bundle has one time domain number and one frequency domain number.

Step 404, the network device, according to the mapping rule of the second pre-configuration mode, the mapping rule of the third pre-configuration mode, the time domain number and the frequency domain number of the REG bundle of the Coreset, and the configured or predefined CCE size, the REG of the Coreset. The bundle performs CCE to REG mapping to obtain at least one CCE of the Coreset.

Wherein, the second pre-configuration mode is a time-domain interleaving mode or a time-domain non-interleaving mode, and the third pre-configuration mode is a frequency-domain interleaving mode or a frequency-domain non-interleaving mode.

Step 405, the network device determines a candidate PDCCH according to at least one CCE of the Coreset. Thus, the network device uses one of the candidate PDCCHs to carry the DCI, and transmits the DCI.

It can be seen that, in the embodiment of the present invention, the REG bundle of the TDM in the Coreset is considered to perform the mapping from the CCE to the REG. In the embodiment of the present invention, the time domain numbering and the frequency domain numbering are respectively performed on the REG bundles, and the time domain interleaving and the frequency domain interleaving configuration are respectively performed. Map the time domain numbers and frequency domain numbers of the REG bundles and REG bundles included in each CCE according to the time domain interleaving (or mapping) function/predefined rule and the frequency domain interleaving (or mapping) function/predefined rule, and configure The time-domain interleaving (or mapping) function/predefined rules for the time-domain non-interleaving mode and the time-domain interleaving mode are different, and the frequency-domain interleaving (or mapping) function/predefined rules for the frequency-domain non-interleaving mode and the frequency-domain interleaving mode are configured The rules are different.

■Time domain or frequency domain interleaving (or mapping) function/predefined rule with one or more of the following factors

Prime related:

·Number of REG bundles for TDM

Configured or predefined time domain interleaving size

Configured or predefined frequency domain interleaving size

Configured or predefined number of REG bundles included in each CCE time domain

Configured or predefined number of REG bundles included in each CCE frequency domain

In this embodiment of the present invention, optionally, in step 405, PDCCH-to-CCEmapping is performed considering the CCE of the TDM. For example, PDCCH-to-CCE group mapping is performed on a CCE combination including multiple CCEs.

The method for determining the physical downlink control channel shown in FIG. 5 will be further described below through a specific example.

其中，

可以配置为6或12。Coreset的频域宽度(以PRB为单位)配置为

并且各参数按照如下定义：The time domain length (in symbols) for which the Coreset persists is configured as

in,

Can be configured to 6 or 12. The frequency domain width (in PRB) of the Coreset is configured as

And each parameter is defined as follows:

Resource Element Group (REG): A resource element group that occupies 1 symbol in the time domain and 1 PRB in the frequency domain, the configured Coreset contains

REG bundle: a combination of L REGs

● Control-channel element (CCE): contains M REGs (for example, the protocol is fixed to 6), and is mapped according to the following CCE-to-REG mapping rules.

CCE-to-REG mapping can be configured in interleaved or non-interleaved form, and is performed at the granularity of REG bundles according to the following rules:

● First, the REGs are numbered in accordance with the principle of first in the time domain from front to back, and then in the frequency domain from low to high. Specifically, starting from the lowest frequency domain of the Coreset, the REGs in the same frequency domain in the Coreset are numbered in sequence in the time domain order, and the REGs in the next frequency domain of the Coreset are sequentially numbered in the order of the frequency domain of the Coreset from low to high. Numbering is performed sequentially in the time domain until all REGs of the Coreset are numbered.

则REG的编号如下图2所示。For example, if

Then the numbering of the REG is shown in Figure 2 below.

其中N_Coreset为Coreset配置的REG数目，i_t为REG bundle的时域编号，i_f为REG bundle的频域编号；● ( _{i t} , if )th REG bundle contains REG

where N _Coreset is the number of REGs configured by Coreset, _{i t} is the time domain number of the REG bundle, and if is the frequency domain number of the REG bundle;

For example, assuming L=2, the (0, 0)th REG bundle contains {REG0, REG1}, the (1, 0)th REG bundle contains {REG2, REG3}, ...

Obtain the time domain number and frequency domain number of the REG bundle included in the jth CCE according to the different modes and interleaving functions configured, and assume that the size of the time domain REG bundle included in a CCE is predefined as 3:

■When configured in time-domain non-interleaving mode

◆CCE 0->REG bundle time domain number {0,1,2}

◆CCE 1->REG bundle time domain number {3,4,5}

◆CCE 2->REG bundle time domain number {0,1,2}

◆…

■When configured in time domain interleaving (interleaving size is 3) mode

◆CCE 0->REG bundle{0,2,4}

◆CCE 1->REG bundle{1,3,5}

◆CCE 2->REG bundle{0,2,4}

◆…

The above is a method for determining a physical downlink control channel applied to a network device. Correspondingly, the present invention provides an embodiment of a method for determining a physical downlink control channel applied to a user equipment. The method for determining the physical downlink control channel applied to the user equipment includes:

The user equipment numbers the REGs of the Coreset. The user equipment may number the REGs in the Coreset according to the principle of priority in the time domain and from low to high in the frequency domain.

The user equipment combines the REGs of the Coreset according to the number of the REGs of the Coreset, configured or a predefined REG bundle size L, to form multiple REG bundles of the Coreset. One REG bundle includes L REGs; the REG bundle size L can pass through the time domain. and/or frequency domain are configured separately.

The user equipment performs time-domain numbering and frequency-domain numbering on multiple REG bundles in the Coreset, where one REG bundle has one time-domain number and one frequency-domain number.

The user equipment performs CCE on the REG bundle of the Coreset according to the mapping rule of the second pre-configuration mode, the mapping rule of the third pre-configuration mode, the time domain number and frequency domain number of the REG bundle of the Coreset, and the configured or predefined CCE size. Mapping to REG to get at least one CCE of Coreset. Wherein, the second pre-configuration mode is a time-domain interleaving mode or a time-domain non-interleaving mode, and the third pre-configuration mode is a frequency-domain interleaving mode or a frequency-domain non-interleaving mode.

The user equipment determines a candidate PDCCH according to at least one CCE of the Coreset. Thus, the user equipment can monitor the determined candidate PDCCHs to receive the DCI carried by one of the candidate PDCCHs.

Since the method for determining the physical downlink control channel applied to the user equipment in this embodiment is similar to the method for determining the physical downlink control channel applied to the network device, and the physical downlink control channel applied to the network device has been described in detail in this embodiment How to determine the channel. Therefore, the relevant content of the method for determining the physical downlink control channel applied to the user equipment will not be repeated here.

Embodiment 3

FIG. 6 shows a schematic flowchart of a method for determining a physical downlink control channel according to still another embodiment of the present invention. As shown in Figure 6, the method for determining the physical downlink control channel includes:

Step 501, the network device numbers the REGs of the Coreset.

For example, the network device numbers the REGs in the Coreset according to the principle of priority in the time domain and from low to high in the frequency domain.

Step 502, the network device determines the REG bundle size and/or the CCE size according to the number of symbols in the Coreset.

Step 503, the network device combines the REGs of the Coreset according to the number of the REGs of the Coreset and the size of the REG bundle to form multiple REG bundles.

Wherein, in the case where the size of the REG bundle is determined in step 502 , the size of the REG bundle is determined in step 502 . In the case where the REG bundle size is not determined in step 502, the REG bundle size may be predefined or configured.

Step 504, the network device numbers the multiple REG bundles of the Coreset.

Step 505 , the network device performs CCE-to-REG mapping on the multiple REG bundles of the Coreset according to the numbers of the multiple REG bundles and the CCE size of the Coreset to obtain at least one CCE of the Coreset.

Wherein, when the CCE size is determined in step 502 , the CCE size is determined in step 502 . In the case where the CCE size is not determined in step 502, the CCE size may be predefined or configured.

Step 506, the network device determines a candidate PDCCH according to at least one CCE of the Coreset. Thus, the network device uses one of the candidate PDCCHs to carry the DCI, and transmits the DCI.

In this embodiment of the present invention, optionally, in step 506, PDCCH-to-CCEmapping is performed considering the CCE of the TDM. For example, PDCCH-to-CCE group mapping is performed on a CCE combination including multiple CCEs.

The method for determining the physical downlink control channel shown in FIG. 6 will be further described below through a specific example.

(可配置为1，2，3，6，12)，频域宽度(以PRB为单位)配置为

当配置为非交织模式时，The time domain length (in symbols) for which the Coreset persists is configured as

(can be configured as 1, 2, 3, 6, 12), the frequency domain width (in PRB) is configured as

When configured in non-interleaved mode,

时，REG bundle大小为6，CCE大小为6；·when

, the REG bundle size is 6, and the CCE size is 6;

时，REG bundle大小为12，CCE大小为12；·when

, the REG bundle size is 12, and the CCE size is 12;

When configured in interleaved mode,

时，REG bundle大小可配置为2或6，CCE大小为6；·当

或者3或者6时，REG bundle大小可配置为

或6，CCE大小为6；·when

, the REG bundle size can be configured as 2 or 6, and the CCE size is 6; when

When either 3 or 6, the REG bundle size can be configured as

or 6, with a CCE size of 6;

时，REG bundle大小可配置为12，CCE大小为12。·when

, the REG bundle size can be configured as 12, and the CCE size is 12.

The above is a method for determining a physical downlink control channel applied to a network device. Correspondingly, the present invention provides an embodiment of a method for determining a physical downlink control channel applied to a user equipment. The method for determining the physical downlink control channel applied to the user equipment includes:

The user equipment numbers the REGs of the Coreset. For example, the network device numbers the REGs in the Coreset according to the principle of priority in the time domain and from low to high in the frequency domain.

The user equipment determines the REG bundle size and/or the CCE size according to the number of symbols in the Coreset.

The user equipment combines the REGs of the Coreset according to the number of the REGs of the Coreset and the size of the REG bundle to form multiple REG bundles. Wherein, in the case of determining the REG bundle size, the REG bundle size is determined by the user equipment. Without determining the REG bundle size, the REG bundle size may be predefined or configured.

The user equipment numbers the multiple REG bundles of the Coreset.

The user equipment performs CCE-to-REG mapping on the multiple REG bundles of the Coreset according to the numbers of the multiple REG bundles in the Coreset and the size of the CCE to obtain at least one CCE of the Coreset. Wherein, in the case of determining the size of the CCE, the size of the CCE is determined. In the case where the CCE size is not determined, the CCE size may be predefined or configured.

The user equipment determines a candidate PDCCH according to at least one CCE of the Coreset. Thus, the user equipment can monitor the determined candidate PDCCHs to receive the DCI carried by one of the candidate PDCCHs.

Since the method for determining the physical downlink control channel applied to the user equipment in this embodiment is similar to the method for determining the physical downlink control channel applied to the network device, and the physical downlink control channel applied to the network device has been described in detail in this embodiment How to determine the channel. Therefore, the relevant content of the method for determining the physical downlink control channel applied to the user equipment will not be repeated here.

Embodiment 4

FIG. 7 shows a schematic flowchart of a method for determining a physical downlink control channel according to still another embodiment of the present invention. As shown in Figure 7, the method for determining the physical downlink control channel includes:

Step 601, the network device divides the Coreset into multiple Sub-coresets. The Coreset may be the second control resource set described above, and the Sub-coreset may be the first control resource set described above.

Among them, the number of symbols of a Sub-coreset can be predefined or configured. The number of symbols in the Sub-coreset can be related to the number of symbols in the Coreset.

The total number of Sub-coresets can be predefined or configured. The total number of Sub-coresets can be related to the number of symbols in the Coreset.

Step 602, the network device numbers the REGs of multiple Sub-coresets.

Optionally, the REGs in each Sub-coreset may be numbered according to the principle of time domain priority and frequency domain from low to high. Specifically, for Sub-coreset 0 to Sub-coreset 5, the REGs in Sub-coreset 0 are numbered according to the principle of time domain priority and frequency domain from low to high, and the 10 REGs of Sub-coreset 0 are numbered as REG0 to REG9. Similarly, the 10 REGs of Sub-coreset 1 are numbered as REG0 to REG9, ..., and the 10 REGs of Sub-coreset 5 are numbered as REG0 to REG9.

Step 603: The network device performs separately for each Sub-coreset: combining the REGs of the Sub-coreset according to the number of the REGs of the Sub-coreset and the size of the REG bundle to form multiple REG bundles of the Sub-coreset.

Step 604, the network device numbers the REG bundles of the multiple Sub-coresets.

Optionally, the REGs in each Sub-coreset may be numbered according to the principle of time domain priority and frequency domain from low to high. Alternatively, the REGs in each Sub-coreset are numbered according to the principle of priority in the frequency domain and from low to high in the time domain.

For example, for Sub-coreset 0 to Sub-coreset 5, the 5 REG bundles in Sub-coreset 0 are numbered according to the principle of time domain priority and frequency domain from low to high, and the five REGs of Sub-coreset 0 are numbered. The bundle numbers are REG0 to REG4. Similarly, the five REG bundles of Sub-coreset 1 are numbered as REG0 to REG4, ..., and the five REG bundles of Sub-coreset 5 are numbered as REG0 to REG4.

Step 605: For each Sub-coreset, the network device performs CCE-to-REG mapping on the REG bundle of the Sub-coreset according to the number of the REG bundle of the Sub-coreset and the size of the CCE to obtain at least one CCE of the Sub-coreset. That is, CCE-to-REG mapping is performed in each sub-coreset according to the above-mentioned REG bundle.

Step 606, the network device uniformly numbers the CCEs of the multiple Sub-coresets in the order of the multiple Sub-coresets. Step 606 is numbering according to the principle of sub-coreset priority.

Step 607, the network device determines candidate PDCCHs according to the numbers of CCEs of multiple Sub-coresets. Thus, the network device uses one of the candidate PDCCHs to carry the DCI, and transmits the DCI.

In this embodiment of the present invention, optionally, in step 607, PDCCH-to-CCEmapping is performed considering the CCE of the TDM. For example, PDCCH-to-CCE group mapping is performed on a CCE combination including multiple CCEs.

The method for determining the physical downlink control channel shown in FIG. 7 will be further described below through a specific example.

其中，

可以配置为6或12。Coreset的频域宽度(以PRB为单位)配置为

同时配置sub-coreset的符号长度为2，则对于配置为符号个数为12的Coreset共包括6个Sub-coreset。对于每个Sub-coreset，按照传统(legacy)方式进行CCE-to-REG映射，具体如下：The time domain length (in symbols) for which the Coreset persists is configured as

in,

Can be configured to 6 or 12. The frequency domain width (in PRB) of the Coreset is configured as

At the same time, if the sub-coreset is configured with a symbol length of 2, the Coreset configured with 12 symbols includes a total of 6 sub-coresets. For each Sub-coreset, perform CCE-to-REG mapping in a legacy manner, as follows:

· First, the REGs are numbered according to the principle of first in the time domain from front to back, and then in the frequency domain from low to high. After the REGs of the six Sub-coresets are numbered, the REGs of each Sub-coreset are combined to obtain the REG bundle of each Sub-coreset;

The i-th REG bundle contains REG{i*L, i*L+1,...,i*L+L-1}, i=0,1,...,NCoreset, where NCoreset is the number of REGs configured by Coreset;

· For CCE j, it contains REG bundle{f(6j/L),f(6j/L+1),...,f(6j/L+6/L-1)}

■ For non-interleaved CCE-to-REG mapping, L=6 and f(x)=x;

and

for

并且交织函数为■ For interleaved CCE-to-REG mapping, L∈{2,6}for

and

for

and the interleaving function is

x=cR+r

r=0,1,…,R-1

c=0,1,...,C-1

Among them, R is the interleaving size, R can be configured to be 2, 3 or 6, and N _Coreset /(L*R) is an integer; n _shift ∈ {0,1,…,274} can be configured through the high-level parameter shiftIndex, otherwise

Through the above steps, the mapping of each CCE is obtained and each Sub-coreset has a corresponding CCE number, that is, each CCE can be obtained by the Sub-coreset number s and the CCE number c in the Sub-coreset, and finally according to the six Sub-coreset numbers - In the order of coresets, the CCEs of 6 sub-coresets are numbered, that is, the number of CCEs corresponding to (s, c) is j=c*N _s +s, where N _s is the number of sub-coresets.

As an example, suppose there are 6 Sub-coresets, and each Sub-coreset has 8 CCEs, for a total of 48 CCEs. So

■Sub-CORESET 0 corresponds to CCE {0, 6, 12, 18, 24, 30, 36, 42}

■Sub-CORESET 1 corresponds to CCE {1, 7, 13, 19, 25, 31, 37, 43}

■Sub-CORESET 2 corresponds to CCE {2, 8, 14, 20, 26, 32, 38, 44}

■…

■Sub-CORESET 5 corresponds to CCE {5, 11, 17, 23, 29, 35, 41, 47}

The CCEs in a Sub-coreset are configured according to the legacy CCE-REG mapping method and the definition of Rel-15 REG-Bundling.

The above is a method for determining a physical downlink control channel applied to a network device. Correspondingly, the present invention provides an embodiment of a method for determining a physical downlink control channel applied to a user equipment. The method for determining the physical downlink control channel applied to the user equipment includes:

The user equipment divides the Coreset into multiple Sub-coresets.

The user equipment numbers the REGs of multiple Sub-coresets. Optionally, the REGs in each Sub-coreset may be numbered according to the principle of time domain priority and frequency domain from low to high.

The user equipment performs separately for each Sub-coreset: combining the REGs of the Sub-coreset according to the number of the REGs of the Sub-coreset and the size of the REG bundle to form multiple REG bundles of the Sub-coreset.

The user equipment numbers the REG bundles of multiple Sub-coresets. Optionally, the REGs in each Sub-coreset may be numbered according to the principle of time domain priority and frequency domain from low to high. Alternatively, the REGs in each Sub-coreset are numbered according to the principle of priority in the frequency domain and from low to high in the time domain.

For each Sub-coreset, the user equipment performs CCE-to-REG mapping on the REG bundle of the Sub-coreset according to the number of the REG bundle of the Sub-coreset and the size of the CCE, to obtain at least one CCE of the Sub-coreset. That is, CCE-to-REG mapping is performed in each sub-coreset according to the above-mentioned REG bundle.

The user equipment uniformly numbers the CCEs of the multiple Sub-coresets according to the sequence of the multiple Sub-coresets.

The user equipment determines candidate PDCCHs according to the CCE numbers of multiple Sub-coresets. Thus, the user equipment can monitor the determined candidate PDCCHs to receive the DCI carried by one of the candidate PDCCHs.

Since the method for determining the physical downlink control channel applied to the user equipment in this embodiment is similar to the method for determining the physical downlink control channel applied to the network device, and the physical downlink control channel applied to the network device has been described in detail in this embodiment How to determine the channel. Therefore, the relevant content of the method for determining the physical downlink control channel applied to the user equipment will not be repeated here.

FIG. 8 shows a schematic structural diagram of an apparatus for determining a physical downlink control channel according to still another embodiment of the present invention. As shown in FIG. 8 , the apparatus 700 for determining a physical downlink control channel includes:

A first mapping module 701, configured to perform CCE-to-REG mapping on multiple resource element group REG bundles according to the number of multiple resource element group REG bundles in the first control resource set and the control channel element CCE size to obtain a first control at least one CCE of the resource set, wherein one CCE includes at least one resource element group REG bundle, and one resource element group REG bundle includes at least one REG;

The channel determination module 702 is configured to determine, according to at least one CCE of the first control resource set, a candidate physical downlink control channel PDCCH of the first control resource set.

In the embodiment of the present invention, by numbering the REG bundles of the first control resource set, and mapping the CCEs to the REGs according to the number of the REG bundles and the size of the CCEs, at least one CCE of the first control resource set is obtained, thereby determining the first control resource set. A candidate PDCCH for a control resource set. Therefore, the candidate PDCCH can be determined according to the above solution, so that a control resource set with a larger time domain length can be configured. The apparatus for determining the physical downlink control channel may be applied to user equipment or network equipment.

Optionally, in one or more embodiments of the present invention, the first mapping module 701 includes:

According to the mapping rule of the first pre-configuration mode, the numbers of the REG bundles of the multiple resource element groups and the CCE size of the control channel element, the mapping of the CCEs to the REGs is performed on the REG bundles of the multiple resource element groups;

The first pre-configured mode is one of the following: unified interleaving mode, unified non-interleaving mode, time-domain interleaving mode and frequency-domain non-interleaving mode, time-domain non-interleaving mode and frequency-domain non-interleaving mode, time-domain interleaving mode and frequency-domain non-interleaving mode Domain interleaving mode, time domain non-interleaving mode and frequency domain interleaving mode;

The unified interleaving mode is a CCE-to-REG mapping mode that interleaves the numbers of multiple resource element groups REG bundles; the unified non-interleaving mode is a CCE-to-REG mapping mode that performs non-interleaving CCE-to-REG mappings for the numbers of multiple resource element groups REG bundles.

Optionally, in one or more embodiments of the present invention, the mapping rule of the unified interleaving mode is related to at least one of the following: the number of REG bundles of time division multiplexing TDM in the first control resource set, which is preconfigured or predefined The uniform interleaving size, the pre-configured or predefined number of REG bundles included in each CCE in the time domain, and the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the unified non-interleaving mode is related to at least one of the following: the number of REG bundles in the TDM in the first control resource set, the pre-configured or pre-defined number of REG bundles included in each CCE in the time domain, the pre-configured or pre-defined number of REG bundles in the TDM The predefined number of REG bundles contained in each CCE in the frequency domain;

The mapping rule of the time domain interleaving mode is related to one or more of the following factors: the number of TDM REG bundles in the first control resource set, the preconfigured or predefined time domain interleaving size, the preconfigured or predefined time domain interleaving size of each CCE The number of REG bundles contained in the time domain, the pre-configured or predefined number of REG bundles contained in each CCE in the frequency domain;

The mapping rule of the frequency domain interleaving mode is related to one or more of the following factors: the number of TDM REG bundles in the first control resource set, the preconfigured or predefined frequency domain interleaving size, the preconfigured or predefined frequency domain interleaving size of each CCE in the first control resource set. The number of REG bundles contained in the time domain, the pre-configured or predefined number of REG bundles contained in each CCE in the frequency domain;

The mapping rule of the time-domain non-interleaving mode is related to one or more of the following factors: the number of TDM REG bundles in the first control resource set, the pre-configured or predefined number of REG bundles included in each CCE in the time domain, The preconfigured or predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the frequency-domain non-interleaving mode is related to one or more of the following factors: the number of REG bundles of TDM in the first control resource set, the pre-configured or predefined number of REG bundles included in each CCE in the time domain, The preconfigured or predefined number of REG bundles included in each CCE in the frequency domain.

Optionally, in one or more embodiments of the present invention, the numbering rules for the REG bundles of multiple resource element groups are:

Number the resource element group REG bundles in the lowest frequency domain in the first control resource set in turn according to the time domain sequence; according to the frequency domain of the first control resource set from low to high Each resource element group REG bundle in a frequency domain is sequentially numbered in the time domain sequence, until all resource element group REG bundles of the first control resource set are numbered;

or,

Number each resource element group REG bundle in the highest frequency domain in the first control resource set in turn in the time domain sequence; according to the frequency domain of the first control resource set from high to low Each resource element group REG bundle in the next frequency domain is sequentially numbered in the time domain sequence, until all resource element group REG bundles in the first control resource set are numbered;

or,

Number each resource element group REG bundle in the first control resource set in the first time domain in sequence from low to high in the frequency domain; according to the time domain sequence of the first control resource set, the first control resource Each resource element group REG bundle in the next time domain of the set is numbered in sequence from low to high in the frequency domain, until all resource element group REG bundles of the first control resource set are numbered;

or,

Number each resource element group REG bundle in the first control resource set in the time domain in sequence from high to low in the frequency domain; according to the time domain sequence of the first control resource set, the first control resource Each resource element group REG bundle in the next time domain of the set is sequentially numbered from high to low in the frequency domain, until all resource element group REG bundles of the first control resource set are numbered.

Optionally, in one or more embodiments of the present invention, the first mapping module 701 includes:

According to the mapping rule of the second pre-configuration mode, the mapping rule of the third pre-configuration mode, the number of the REG bundles of the multiple resource element groups and the CCE size of the control channel element, perform CCE-to-REG mapping on the multiple resource element group REG bundles;

Wherein, the second pre-configuration mode is a time-domain interleaving mode or a time-domain non-interleaving mode, and the third pre-configuration mode is a frequency-domain interleaving mode or a frequency-domain non-interleaving mode.

Optionally, in one or more embodiments of the present invention, the mapping rule of the time domain interleaving mode is related to at least one of the following: the number of TDM REG bundles in the first control resource set, the configuration or the predefined time domain Interleaving size, the pre-configured or predefined number of REG bundles included in each CCE in the time domain, and the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the frequency-domain interleaving mode is related to at least one of the following: the number of TDM REG bundles in the first control resource set, the configured or predefined frequency-domain interleaving size, the pre-configured or predefined time domain of each CCE The number of REG bundles included, the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the time-domain non-interleaving mode is related to at least one of the following: the number of REG bundles for time division multiplexing TDM in the first control resource set, the pre-configured or predefined number of REG bundles included in each CCE in the time domain , the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the frequency-domain non-interleaving mode is related to at least one of the following: the number of REG bundles in the time division multiplexed TDM in the first control resource set, the pre-configured or predefined number of REG bundles included in each CCE in the time domain , the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain.

Optionally, in one or more embodiments of the present invention, the number of each resource element group REG bundle in the multiple resource element group REG bundles includes a time domain number and a frequency domain number.

Optionally, in one or more embodiments of the present invention, the apparatus 700 for determining a physical downlink control channel further includes:

a REG bundle determination module, configured to determine multiple resource element group REG bundles according to the size of the REG bundle and the REGs of the first control resource set;

The REG bundle size is related to the number of symbols in the first control resource set.

Optionally, in one or more embodiments of the present invention, the size of the control channel element CCE is related to the number of symbols in the first control resource set.

Optionally, in one or more embodiments of the present invention, the REG beam size is configured in time domain and/or frequency domain.

Optionally, in one or more embodiments of the present invention, the apparatus 700 for determining a physical downlink control channel further includes:

The dividing module is configured to divide the second control resource set into a plurality of first control resource sets according to the configuration information of the second control resource set.

Optionally, in one or more embodiments of the present invention, the configuration information of the second control resource set includes the total number of first control resource sets into which the second control resource set is to be divided and/or one first control resource set number of symbols.

Optionally, in one or more embodiments of the present invention, the configuration information of the second control resource set includes the number of symbols of the second control resource set;

Divided modules include:

an information determination module, configured to determine, according to the number of symbols in the second control resource set, the total number of first control resource sets into which the second control resource set is to be divided and/or the number of symbols in one first control resource set;

A control resource set dividing module, configured to divide the first control resource set into multiple first control resource sets according to the total number of first control resource sets and/or the number of symbols in one first control resource set.

Optionally, in one or more embodiments of the present invention, the channel determination module 702 is configured to determine the candidate physical downlink control channel PDCCH according to the numbers of the CCEs of the multiple first control resource sets;

Wherein, the numbers of any two CCEs in the multiple first control resource sets are different.

Optionally, in one or more embodiments of the present invention, the numbering rules of the CCEs of the multiple first control resource sets include:

Executing the numbering step: sequentially numbering the jth CCE in the multiple first control resource sets according to the order of the multiple first control resource sets;

After finishing the numbering of the jth CCE in the last first control resource set, use the number of the jth CCE in the last first control resource set as the starting point of the next numbering, j=j+1, and return the execution number Steps until all CCEs in the multiple first control resource sets are numbered; j∈[1, a]; a represents the number of CCEs in a first control resource set.

Optionally, in one or more embodiments of the present invention, the channel determination module 702 includes:

A CCE combining module, configured to combine at least one CCE in the first control resource set to obtain at least one CCE group, wherein one CCE group includes at least one CCE;

The second mapping module is used for mapping at least one CCE group from the PDCCH to the CCE group to obtain the candidate physical downlink control channel PDCCH.

FIG. 9 shows a schematic diagram of a hardware structure of a network device according to an embodiment of the present invention.

The network device may include a processor 801 and a memory 802 storing computer program instructions.

The processor 810 is configured to perform CCE-to-REG mapping on the multiple resource element group REG bundles according to the number of the multiple resource element group REG bundles and the control channel element CCE size of the first control resource set to obtain the first control At least one CCE in the resource set, wherein one CCE includes at least one resource element group REG bundle, and one resource element group REG bundle includes at least one REG; according to the at least one CCE, the candidate physical downlink control channel PDCCH of the first control resource set is determined.

In the embodiment of the present invention, by numbering the REG bundles of the first control resource set, and mapping the CCEs to the REGs according to the number of the REG bundles and the size of the CCEs, at least one CCE of the first control resource set is obtained, thereby determining the first control resource set. A candidate PDCCH for a control resource set. Therefore, the candidate PDCCH can be determined according to the above solution, so that a control resource set with a larger time domain length can be configured.

Specifically, the above-mentioned processor 801 may include a central processing unit (CPU), or a specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured as one or more integrated circuits implementing the embodiments of the present invention.

Memory 802 may include mass storage for data or instructions. By way of example and not limitation, memory 802 may include a Hard Disk Drive (HDD), a floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive or two or more A combination of more than one of the above. Memory 802 may include removable or non-removable (or fixed) media, where appropriate. Storage 802 may be internal or external to the integrated gateway disaster recovery device, where appropriate. In certain embodiments, memory 802 is non-volatile solid state memory. In certain embodiments, memory 802 includes read only memory (ROM). Where appropriate, the ROM may be a mask programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), electrically rewritable ROM (EAROM) or flash memory or A combination of two or more of the above.

The processor 801 reads and executes the computer program instructions stored in the memory 802 to implement any method for determining a physical downlink control channel in the foregoing embodiments.

In one example, the network device may also include a communication interface 803 and a bus 810 . Among them, as shown in FIG. 9 , the processor 801 , the memory 802 , and the communication interface 803 are connected through the bus 810 and complete the mutual communication.

The communication interface 803 is mainly used to implement communication between modules, apparatuses, units and/or devices in the embodiments of the present invention.

The bus 810 includes hardware, software, or both, coupling the components of the network device to each other. By way of example and not limitation, the bus may include Accelerated Graphics Port (AGP) or other graphics bus, Enhanced Industry Standard Architecture (EISA) bus, Front Side Bus (FSB), HyperTransport (HT) Interconnect, Industry Standard Architecture (ISA) Bus, Infiniband Interconnect, Low Pin Count (LPC) Bus, Memory Bus, Microchannel Architecture (MCA) Bus, Peripheral Component Interconnect (PCI) Bus, PCI-Express (PCI-X) Bus, Serial Advanced Technology Attachment (SATA) bus, Video Electronics Standards Association Local (VLB) bus or other suitable bus or a combination of two or more of the above. Bus 810 may include one or more buses, where appropriate. Although embodiments of the present invention describe and illustrate a particular bus, the present invention contemplates any suitable bus or interconnect.

The network device may execute the method for determining a physical downlink control channel in the embodiment of the present invention, thereby implementing the method and apparatus for determining a physical downlink control channel described in conjunction with FIG. 1 to FIG. 7 .

An embodiment of the present invention further provides a network device, including a processor, a memory, and a computer program stored in the memory and executable on the processor, and when the computer program is executed by the processor, the above-mentioned method for determining a physical downlink control channel is implemented. In order to avoid repetition, the details are not repeated here.

10 shows a schematic diagram of the hardware structure of a user equipment according to an embodiment of the present invention. The user equipment 900 includes but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display Unit 906 , user input unit 907 , interface unit 908 , memory 909 , processor 910 , and power supply 911 and other components. Those skilled in the art can understand that the structure of the user equipment shown in FIG. 10 does not constitute a limitation on the user equipment, and the user equipment may include more or less components than the one shown, or combine some components, or different components layout. In this embodiment of the present invention, the user equipment includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The processor 910 is configured to perform CCE-to-REG mapping on the multiple resource element group REG bundles according to the number of the multiple resource element group REG bundles and the control channel element CCE size of the first control resource set to obtain the first control At least one CCE in the resource set, wherein one CCE includes at least one resource element group REG bundle, and one resource element group REG bundle includes at least one REG; according to the at least one CCE, the candidate physical downlink control channel PDCCH of the first control resource set is determined.

In this embodiment of the present invention, the REG bundles of the first control resource set are numbered, and according to the number of the REG bundle and the size of the CCE, the mapping of CCEs to REGs is performed to obtain at least one CCE of the first control resource set, thereby determining the first control resource. candidate PDCCH for the set. Therefore, the candidate PDCCH can be determined according to the above solution, so that a control resource set with a larger time domain length can be configured.

It should be understood that, in this embodiment of the present invention, the radio frequency unit 901 can be used for receiving and sending signals during sending and receiving of information or during a call. Specifically, after receiving the downlink data from the base station, it is processed by the processor 910; The uplink data is sent to the base station. Generally, the radio frequency unit 901 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 901 can also communicate with the network and other devices through a wireless communication system.

The user equipment provides the user with wireless broadband Internet access through the network module 902, such as helping the user to send and receive emails, browse web pages, access streaming media, and the like.

The audio output unit 903 may convert audio data received by the radio frequency unit 901 or the network module 902 or stored in the memory 909 into audio signals and output as sound. Also, the audio output unit 903 may also provide audio output related to a specific function performed by the user equipment 900 (eg, call signal reception sound, message reception sound, etc.). The audio output unit 903 includes a speaker, a buzzer, a receiver, and the like.

The input unit 904 is used to receive audio or video signals. The input unit 904 may include a graphics processor (Graphics Processing Unit, GPU) 9041 and a microphone 9042, and the graphics processor 9041 captures images of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode data is processed. The processed image frames may be displayed on the display unit 906 . The image frames processed by the graphics processor 9041 may be stored in the memory 909 (or other storage medium) or transmitted via the radio frequency unit 901 or the network module 902 . The microphone 9042 can receive sound and can process such sound into audio data. The processed audio data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 901 for output in the case of a telephone call mode.

User equipment 900 also includes at least one sensor 905, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 9061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 9061 and the proximity sensor when the user equipment 900 is moved to the ear. / or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes), and can detect the magnitude and direction of gravity when stationary, which can be used to identify the posture of user equipment (such as horizontal and vertical screen switching, related games , magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; the sensor 905 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, Infrared sensors, etc., are not repeated here.

The display unit 906 is used to display information input by the user or information provided to the user. The display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

The user input unit 907 may be used to receive input numerical or character information, and generate key signal input related to user settings and function control of the user equipment. Specifically, the user input unit 907 includes a touch panel 9071 and other input devices 9072 . The touch panel 9071, also referred to as a touch screen, can collect touch operations by the user on or near it (such as the user's finger, stylus, etc., any suitable object or accessory on or near the touch panel 9071). operate). The touch panel 9071 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it to the touch controller. To the processor 910, the command sent by the processor 910 is received and executed. In addition, the touch panel 9071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 9071 , the user input unit 907 may also include other input devices 9072 . Specifically, other input devices 9072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.

Further, the touch panel 9071 can be overlaid on the display panel 9061. When the touch panel 9071 detects a touch operation on or near it, it transmits it to the processor 910 to determine the type of the touch event, and then the processor 910 determines the type of the touch event according to the touch The type of event provides a corresponding visual output on the display panel 9061. Although in FIG. 10 , the touch panel 9071 and the display panel 9061 are used as two independent components to realize the input and output functions of the user equipment, but in some embodiments, the touch panel 9071 and the display panel 9061 can be integrated The input and output functions of the user equipment are implemented, which is not specifically limited here.

The interface unit 908 is an interface for connecting an external device to the user equipment 900 . For example, external devices may include wired or wireless headset ports, external power (or battery charger) ports, wired or wireless data ports, memory card ports, ports for connecting devices with identification modules, audio input/output (I/O) ports, video I/O ports, headphone ports, and more. The interface unit 908 may be used to receive input from external devices (eg, data information, power, etc.) and transmit the received input to one or more elements within the user equipment 900 or may be used between the user equipment 900 and external Transfer data between devices.

The memory 909 may be used to store software programs as well as various data. The memory 909 may mainly include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of the mobile phone (such as audio data, phone book, etc.), etc. Additionally, memory 909 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 910 is the control center of the user equipment, using various interfaces and lines to connect various parts of the entire user equipment, by running or executing the software programs and/or modules stored in the memory 909, and calling the data stored in the memory 909. , perform various functions of the user equipment and process data, so as to monitor the user equipment as a whole. The processor 910 may include one or more processing units; preferably, the processor 910 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, etc., and the modem The processor mainly handles wireless communication. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 910.

The user equipment 900 may also include a power supply 911 (such as a battery) for supplying power to various components. Preferably, the power supply 911 may be logically connected to the processor 910 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system and other functions.

In addition, the user equipment 900 includes some unshown functional modules, which are not repeated here.

An embodiment of the present invention further provides a user equipment, including a processor, a memory, a computer program stored in the memory and executable on the processor, and the computer program is executed by the processor to realize the determination of the above-mentioned physical downlink control channel Each process of the method embodiment can achieve the same technical effect, and in order to avoid repetition, it will not be repeated here.

Embodiments of the present invention further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the above-mentioned embodiments of the method for determining a physical downlink control channel is implemented, and can To achieve the same technical effect, in order to avoid repetition, details are not repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk or an optical disk, and the like.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk, CD), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present invention.

The embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of the present invention, without departing from the spirit of the present invention and the scope protected by the claims, many forms can be made, which all belong to the protection of the present invention.

Claims (20)

1. A method for determining a physical downlink control channel, comprising: Perform CCE-to-REG mapping on the multiple resource element group REG bundles according to the numbers of the multiple resource element group REG bundles in the first control resource set and the size of the control channel element CCE, to obtain at least the first control resource set. one CCE, wherein one CCE includes at least one resource element group REG bundle, and one resource element group REG bundle includes at least one REG; A candidate physical downlink control channel PDCCH of the first control resource set is determined according to the at least one CCE. 2. The method according to claim 1, wherein, according to the number of the multiple resource element group REG bundles and the control channel element CCE size of the first control resource set, the multiple resource element group REG bundles are Perform CCE to REG mapping, including: According to the mapping rule of the first pre-configuration mode, the number of the multiple resource element group REG bundles and the CCE size of the control channel element, perform CCE-to-REG mapping on the multiple resource element group REG bundles; The first pre-configured mode is one of the following: unified interleaving mode, unified non-interleaving mode, time-domain interleaving mode and frequency-domain non-interleaving mode, time-domain non-interleaving mode and frequency-domain non-interleaving mode, and time-domain interleaving mode and frequency domain interleaving mode, time domain non-interleaving mode and frequency domain interleaving mode; The unified interleaving mode is a CCE-to-REG mapping mode for interleaving the numbers of the REG bundles of the multiple resource element groups; the unified non-interleaving mode is the non-interleaving of the numbers of the REG bundles of the multiple resource element groups. The mode of CCE to REG mapping. 3. The method of claim 2, wherein The mapping rule of the unified interleaving mode is related to at least one of the following: the number of REG bundles of time division multiplexing TDM in the first control resource set, the preconfigured or predefined unified interleaving size, the preconfigured or predefined each The number of REG bundles contained in a CCE in the time domain, the pre-configured or predefined number of REG bundles contained in each CCE in the frequency domain; The mapping rule of the unified non-interleaving mode is related to at least one of the following: the number of REG bundles of TDM in the first control resource set, the pre-configured or predefined number of REG bundles included in each CCE in the time domain , the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain; The mapping rule of the time domain interleaving mode is related to one or more of the following factors: the number of TDM REG bundles in the first control resource set, the preconfigured or predefined time domain interleaving size, the preconfigured or predefined time domain interleaving size The number of REG bundles contained in each CCE in the time domain, and the pre-configured or predefined number of REG bundles contained in each CCE in the frequency domain; The mapping rule of the frequency domain interleaving mode is related to one or more of the following factors: the number of TDM REG bundles in the first control resource set, a preconfigured or predefined frequency domain interleaving size, a preconfigured or predefined The number of REG bundles contained in each CCE in the time domain, and the pre-configured or predefined number of REG bundles contained in each CCE in the frequency domain; The mapping rule of the time-domain non-interleaving mode is related to one or more of the following factors: the number of TDM REG bundles in the first control resource set, the pre-configured or predefined REGs included in each CCE in the time domain The number of bundles, the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain; The mapping rule of the frequency-domain non-interleaving mode is related to one or more of the following factors: the number of TDM REG bundles in the first control resource set, the pre-configured or predefined REGs included in each CCE in the time domain The number of bundles, the pre-configured or pre-defined number of REG bundles included in each CCE in the frequency domain. 4. The method according to claim 2, wherein the numbering rule of the multiple resource element group REG bundles is: Numbering the resource element group REG bundles in the lowest frequency domain in the first control resource set in sequence in the time domain order; according to the frequency domain order of the first control resource set from low to high, the Each resource element group REG bundle in the next frequency domain of a control resource set is sequentially numbered in the time domain sequence, until all resource element group REG bundles of the first control resource set are numbered; or, Numbering the REG bundles of the resource element groups in the highest frequency domain in the first control resource set in sequence in the time domain order; according to the frequency domain order of the first control resource set from high to low, the Each resource element group REG bundle in the next frequency domain of the first control resource set is numbered sequentially in time domain sequence, until all resource element group REG bundles of the first control resource set are numbered; or, Numbering each resource element group REG bundle in the first control resource set in the time domain in sequence from low to high in the frequency domain; according to the time domain order of the first control resource set, for Each resource element group REG bundle in the next time domain of the first control resource set is numbered in sequence from low to high in the frequency domain, until all resource element group REG bundles of the first control resource set are numbered. ; or, Numbering each resource element group REG bundle in the first control resource set in the time domain in sequence from high to low in the frequency domain; according to the time domain order of the first control resource set, for Each resource element group REG bundle in the next time domain of the first control resource set is numbered in sequence from high to low in the frequency domain, until all resource element group REG bundles of the first control resource set are numbered . 5 . The method according to claim 1 , wherein, according to the number of the multiple resource element group REG bundles and the control channel element CCE size of the first control resource set, the multiple resource element group REG bundles are analyzed. 6 . Perform CCE to REG mapping, including: According to the mapping rule of the second pre-configuration mode, the mapping rule of the third pre-configuration mode, the number of the multiple resource element group REG bundles and the CCE size of the control channel element, the multiple resource element group REG bundles are processed. Mapping of CCE to REG; The second pre-configured mode is a time-domain interleaving mode or a time-domain non-interleaving mode, and the third pre-configured mode is a frequency-domain interleaving mode or a frequency-domain non-interleaving mode. 6. The method of claim 5, wherein The mapping rule of the time-domain interleaving mode is related to at least one of the following items: the number of REG bundles of TDM in the first control resource set, the configured or predefined time-domain interleaving size, and each CCE that is preconfigured or predefined The number of REG bundles contained in the time domain, the pre-configured or predefined number of REG bundles contained in each CCE in the frequency domain; The mapping rule of the frequency domain interleaving mode is related to at least one of the following items: the number of REG bundles of TDM in the first control resource set, the configured or predefined frequency domain interleaving size, and each CCE that is preconfigured or predefined The number of REG bundles contained in the time domain, the pre-configured or predefined number of REG bundles contained in each CCE in the frequency domain; The mapping rule of the time-domain non-interleaving mode is related to at least one of the following: the number of REG bundles of the time-division multiplexed TDM in the first control resource set, the pre-configured or predefined number of each CCE included in the time domain; The number of REG bundles, the pre-configured or predefined number of REG bundles included in each CCE in the frequency domain; The mapping rule of the frequency-domain non-interleaving mode is related to at least one of the following: the number of REG bundles of the time-division multiplexed TDM in the first control resource set, the pre-configured or predefined number of each CCE included in the time domain; Number of REG bundles, pre-configured or predefined number of REG bundles included in each CCE in the frequency domain. 7. The method according to claim 5, wherein the number of each resource element group REG bundle in the plurality of resource element group REG bundles includes a time domain number and a frequency domain number. 8 . The method according to claim 1 , wherein, according to the number of the multiple resource element group REG bundles and the control channel element CCE size of the first control resource set, the multiple resource element group REG bundles Before performing the mapping from the CCE to the REG, the method further includes: determining the multiple resource element group REG bundles according to the REG bundle size and the REGs of the first control resource set; Wherein, the size of the REG bundle is related to the number of symbols in the first control resource set. 9. The method according to claim 1, wherein the CCE size of the control channel element is related to the number of symbols in the first control resource set. 10. The method according to claim 1, wherein the size of the REG beam is configured in time domain and/or frequency domain. 11. The method according to claim 1, wherein, according to the number of the multiple resource element group REG bundles and the control channel element CCE size of the first control resource set, the multiple resource element group REG bundles are Before performing the mapping from the CCE to the REG, the method further includes: According to the configuration information of the second control resource set, the second control resource set is divided into a plurality of the first control resource sets. 12. The method according to claim 11, wherein the configuration information of the second control resource set comprises a total number of first control resource sets to be divided into the second control resource set and/or one of the The number of symbols in the first control resource set. The method according to claim 11, wherein the configuration information of the second control resource set comprises the number of symbols of the second control resource set; The dividing the second control resource set into a plurality of the first control resource sets according to the configuration information of the second control resource set, including: determining, according to the number of symbols of the second control resource set, the total number of first control resource sets into which the second control resource set is to be divided and/or the number of symbols of one of the first control resource sets; The first control resource set is divided into the plurality of first control resource sets according to the total number of the first control resource sets and/or the number of symbols of one of the first control resource sets. The method according to claim 11, wherein the determining, according to the at least one CCE, the candidate physical downlink control channel PDCCH of the first control resource set comprises: determining the candidate physical downlink control channel PDCCH according to the numbers of the CCEs of the multiple first control resource sets; Wherein, the numbers of any two CCEs in the plurality of first control resource sets are different. 15. The method according to claim 11, wherein the numbering rules of the CCEs of the plurality of first control resource sets comprise: performing the numbering step: sequentially numbering the jth CCE in the plurality of first control resource sets according to the order of the plurality of first control resource sets; After finishing the numbering of the jth CCE in the last first control resource set, use the number of the jth CCE in the last first control resource set as the starting point of the next numbering, j=j+1, return The numbering step is performed until all CCEs in the multiple first control resource sets are numbered; j∈[1, a]; a represents the number of CCEs in one of the first control resource sets. The method according to any one of claims 1-15, wherein the determining, according to the at least one CCE, the candidate physical downlink control channel PDCCH of the first control resource set comprises: combining the at least one CCE of the first control resource set to obtain at least one CCE group, wherein one of the CCE groups includes at least one of the CCEs; The at least one CCE group is mapped from the PDCCH to the CCE group to obtain the candidate physical downlink control channel PDCCH. 17. An apparatus for determining a physical downlink control channel, comprising: a first mapping module, configured to perform CCE-to-REG mapping on the multiple resource element group REG bundles according to the number of the multiple resource element group REG bundles and the control channel element CCE size in the first control resource set, to obtain the at least one CCE of the first control resource set, wherein one CCE includes at least one resource element group REG bundle, and one resource element group REG bundle includes at least one REG; A channel determination module, configured to determine, according to the at least one CCE, a candidate physical downlink control channel PDCCH of the first control resource set. 18. A network device, characterized in that it comprises a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program being executed by the processor to achieve the right Steps of the method for determining a physical downlink control channel according to any one of requirements 1 to 16. 19. A user equipment, characterized in that it comprises a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program being executed by the processor to achieve the right Steps of the method for determining a physical downlink control channel according to any one of requirements 1 to 16. 20. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the physical device according to any one of claims 1 to 16 is implemented. Steps of a method for determining a downlink control channel.

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