WO2021143662A1

WO2021143662A1 - Method and apparatus for determining physical downlink control channel, and device and medium

Info

Publication number: WO2021143662A1
Application number: PCT/CN2021/071207
Authority: WO
Inventors: 李�根; 沈晓冬
Original assignee: 维沃移动通信有限公司
Priority date: 2020-01-13
Filing date: 2021-01-12
Publication date: 2021-07-22
Also published as: CN113115448B; CN113115448A

Abstract

Disclosed are a method and apparatus for determining a physical downlink control channel, and a device and a medium. The method comprises: according to the numbers of a plurality of resource element group (REG) bundles of a first control resource set and the size of a control channel element (CCE), performing CCE-to-REG mapping on the plurality of resource element group (REG) bundles to obtain at least one CCE of the first control resource set, wherein one CCE comprises at least one REG bundle, and one REG bundle comprises at least one REG; and according to the at least one CCE, determining a candidate physical downlink control channel (PDCCH) of the first control resource set.

Description

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

Cross-references to related applications

This application claims the priority of Chinese Patent Application No. 202010033968.X filed in China on January 13, 2020, the entire content of which is incorporated herein by reference.

Technical field

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

Background technique

In the New Radio (NR), the concept of Control Resource Set (Coreset) is introduced, and the Physical Downlink Control Channel (PDCCH) is transmitted on the Coreset.

If NR operates in a high frequency band (such as 57-71GHz) and supports large bandwidth carriers, then the current subcarrier spacing (SCS) used by FR2 (24250MHz-52600MHz, also known as Above-6GHz or millimeter wave) 60KHz/120KHz) is no longer applicable, and a larger SCS needs to be introduced to reduce the required Fast Fourier Transformation (FFT) size.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, increasing the SCS will cause the length of each symbol to decrease. 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 to solve the problem that the solution of configuring a Coreset with a larger time domain length cannot currently be realized.

In order to solve the above technical problems, the present invention is implemented as follows:

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

According to the number of the multiple resource element group REG bundles of the first control resource set and the control channel element CCE size, the CCE to REG mapping is performed on the multiple resource element group REG bundles to obtain at least the first control resource set One CCE, one CCE includes at least one REG bundle, and one REG bundle includes at least one REG;

According to the at least one CCE, a candidate physical downlink control channel PDCCH of the first control resource set is determined.

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

The first mapping module 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 of the first control resource set and the control channel element CCE size to obtain the At least one CCE in the first control resource set, one CCE includes at least one REG bundle, and one REG bundle includes at least one REG;

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

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 running on the processor, the computer program being executed by the processor When realizing the steps of the method for determining the physical downlink control channel.

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 running on the processor, the computer program being executed by the processor When realizing the steps of the method for determining the physical downlink control channel.

In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium on which a computer program is stored, 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 a sixth aspect, an embodiment of the present invention provides a computer program product, and the program product is executed by at least one processor to implement the steps of the physical downlink control channel determination method.

In a seventh aspect, an embodiment of the present invention provides a user equipment configured to implement the steps of the method for determining the physical downlink control channel.

In the embodiment of the present invention, the REG bundles of the first control resource set are numbered, and the CCE to REG mapping is performed according to the number of the REG bundles and the CCE size to obtain at least one CCE of the first control resource set, thereby determining the first control resource set. A candidate PDCCH for the 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 the drawings

Figure 1 shows an interaction diagram of an embodiment of a method for determining a physical downlink control channel provided by the present invention;

FIG. 2 shows a schematic flowchart of an embodiment of a method for determining a physical downlink control channel provided by the present invention;

Figure 3 shows a schematic diagram of an embodiment of REG numbering provided by the present invention;

4 shows a schematic flowchart of another embodiment of a method for determining a physical downlink control channel provided by the present invention;

FIG. 5 shows a schematic flowchart of another embodiment of a method for determining a physical downlink control channel provided by the present invention;

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

FIG. 7 shows a schematic flowchart of another embodiment of a method for determining a physical downlink control channel provided by the present invention;

FIG. 8 shows a schematic structural diagram of another embodiment of the apparatus for determining a physical downlink control channel provided by the present invention;

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

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

Detailed ways

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

In order to better describe the solution of the embodiment of the present invention, the Coreset configuration of NR Rel15 will be described below.

In NR Rel15, Coreset is similar to the definition of the Long Term Evolution (LTE) PDCCH control domain, and it can be all or part of the PRB configured in the BWP frequency domain. At the same time, the duration of Coreset (in symbols) can be configured as 1, 2 or 3. At the same time, the resources related to Coreset have the following definitions:

●Resource Element Group (REG): A resource element group that occupies 1 symbol in the time domain and 1 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 at 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 (CCE): Contains 6 REGs and is mapped according to the following CCE-to-REG mapping rules.

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

●First, number the REG according to the principle of time domain from front to back, and 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 CCEj, 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;

■For interleaved CCE-to-REG mapping, L∈{2,6}for

and

for

And the interleaving function is f(x)=(rC+c+n _shift )mod

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 performed by the high-level parameter shiftIndex Configure, otherwise

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

When the high-level parameter precoderGranularity is configured as allContiguousRBs, the UE assumes that the precoding on the continuous REG in the coreset is the same, and the continuous REG is not the same as the resource unit (Cell Reference Signal, CRS) of the LTE cell reference signal (CRS) configured in the case of any SSB or DSS Resource element, RE) overlap.

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

Based on the above configuration related information of the control resource set, FIG. 1 shows an interaction diagram of an embodiment of a method for determining a physical downlink control channel provided by 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-configuration information.

Among them, the network equipment may include a base station. The pre-configuration information may include at least one of the following: the number of symbols of 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.

The method for determining the physical downlink control channel also includes:

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-configuration information. The pre-configuration information may be configuration information sent by the network device received by the user equipment.

The pre-configuration information may include at least one of the following: 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.

The method for determining the physical downlink control channel also includes:

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

Based on the foregoing system architecture, FIG. 2 shows a schematic flowchart of an embodiment of a method for determining a physical downlink control channel provided by 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 a physical downlink control channel includes:

Step 201: The network device performs CCE to REG mapping on the multiple REG bundles according to the number 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 and one CCE in the first control resource set. Includes at least one resource unit group REG bundle, and one resource unit group REG bundle includes at least one REG;

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

In the embodiment of the present invention, the network device numbers the REG bundles of the first control resource set, and performs the mapping from CCE to REG according to the number of the REG bundle and the CCE size to obtain at least one CCE of the first control resource set, thereby determining Candidate PDCCH of 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.

In one or more embodiments of the present invention, step 201 may include:

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

Among them, 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 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 REG bundles; the unified non-interleaving mode is a CCE to REG mapping mode that non-interleaves the numbers of multiple REG bundles.

In the 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 can be configured. If a control resource set with a larger time domain length is configured, time division multiplexing (TDM) REG bundles may appear in the control resource set. For example, REG0 and REG1 in Figure 3 are a REG bundle, REG2 and REG3 is another REG bundle. Since these two REG bundles belong to the same frequency domain, these two REG bundles are TDM REG bundles. When a TDM REG bundle 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 the embodiment of the present invention, so that a control resource set with a larger time domain length can be configured.

In one or more embodiments of the present invention, the mapping rule of the unified interleaving pattern may be related to at least one of the following: the number of TDM REG bundles in the first control resource set, pre-configured or predefined unified interleaving Size, the number of pre-configured or predefined 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 unified non-interleaved mode may be related to at least one of the following: the number of TDM REG bundles in the first control resource set, the pre-configured or pre-defined number of REG bundles contained in each CCE in the time domain, pre-configured Or the predefined number of REG bundles included in each CCE in the frequency domain;

The mapping rule of the time-domain interleaving pattern may be 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 time-domain interleaving size, and each pre-configured or pre-defined CCE The number of REG bundles included 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 pattern may be 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 pre-defined frequency-domain interleaving size, and each pre-configured or pre-defined CCE The number of REG bundles included 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 time-domain non-interlaced mode may be related to one or more of the following factors: the number of TDM REG bundles in the first control resource set, the number of pre-configured or predefined REG bundles contained in each CCE in the time domain , The number of pre-configured or predefined REG bundles included in each CCE in the frequency domain;

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

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

In one or more embodiments of the present invention, the method for determining the physical downlink control channel may further include:

According to the numbering rule of the multiple resource unit group REG bundles, the multiple resource unit group REG bundles are numbered.

In one or more embodiments of the present invention, the numbering rule of the REG of the first control resource set may be:

The REGs in the lowest frequency domain in the first control resource set are numbered sequentially 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 REGs are numbered sequentially in time domain order, until all REGs in the first control resource set are numbered.

Thus, according to the number of the REG of the first control resource set and the size of the REG bundle, the REGs of the first control resource set are combined to form multiple REG bundles of the first control resource set.

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

The REG bundles can be uniformly numbered according to the frequency domain first and then the time domain, or the time domain first and then the frequency domain. details as follows:

In one or more embodiments of the present invention, the numbering rule of the multiple resource unit group REG bundles of the first control resource set may be:

The REG bundles in the lowest frequency domain in the first control resource set are numbered sequentially 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 upper REG bundles are numbered sequentially in time domain order, until all REG bundles in the first control resource set are numbered. Among them, one REG bundle can have one number.

For example, the numbering result of the REG of the first control resource set is shown in Figure 3, and when 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 number of the REG bundle formed by combining with REG1 is REG bundle 0, and the number of the REG bundle formed by combining REG2 and REG3 is REG bundle 1...The REG bundle formed by combining REG10 and REG11 is numbered REG bundle 5.

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

In one or more embodiments of the present invention, the numbering rule of the multiple resource unit group REG bundles of the first control resource set is:

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

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

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

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

For example, in the case of the REG numbering result of the first control resource set as shown in Fig. 3, 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, the REG bundle formed by REG0 and REG1 is numbered REG bundle 0; the REG bundle formed by REG12 and REG13 is numbered REG bundle 1...The REG bundle formed by REG60 and REG61 is numbered REG bundle 5.

After the REG bundles on the first time domain are numbered, the REG bundles on the second time domain are numbered. The REG bundles on the second time domain are numbered similarly to the REG bundles on the first time domain. The numbering of the REG bundle in the second time domain will not be repeated here.

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

The REG bundles in the first time domain in the first control resource set 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 ones of the first control resource set are numbered. 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, in the case of the REG numbering result of the first control resource set as shown in Fig. 3, 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 The REG bundles in the time domain are numbered, the REG bundle formed by REG60 and REG61 is numbered REG bundle 0; the REG bundle formed by REG48 and REG49 is numbered REG bundle 1...The REG bundle formed by REG0 and REG1 is numbered REG bundle 5.

In one or more embodiments of the present invention, step 201 may include:

The network device performs CCE to REG mapping on 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 multiple REG bundles, and the size of the control channel element CCE;

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 the 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 can 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 a TDM REG bundle 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 the embodiment of the present invention, so that a control resource set with a larger time domain length can be configured.

In one or more embodiments of the present invention, the mapping rule of the time-domain interleaving pattern may be 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 number of pre-configured or predefined 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 pattern may be 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, and each pre-configured or predefined CCE is in the time domain The number of REG bundles contained in the above, 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-interleaved mode may be related to at least one of the following: the number of TDM REG bundles in the first control resource set, and the number of pre-configured or predefined REG bundles contained in each CCE in the time domain Number, the number of pre-configured or predefined REG bundles included in each CCE in the frequency domain;

The mapping rule of the frequency-domain non-interleaved mode may be related to at least one of the following: the number of REG bundles of the time division multiplexing TDM in the first control resource set, and the number of pre-configured or predefined REG bundles contained in each CCE in the time domain Number, pre-configured or predefined number of REG bundles included in each CCE in the frequency domain.

In one or more embodiments of the present invention, the number of each REG bundle of the first control resource set may include a time domain number and a frequency domain number.

In one or more embodiments of the present invention, before step 201, the method for determining the physical downlink control channel may further include:

The network device obtains multiple REG bundles according to the size of the REG bundle and the REG 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 size of the REG bundle is related to the number of symbols in the first control resource set (that is, the time domain length of the first control resource set).

In the 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, the occurrence of TDM REG bundles in the first control resource set can be avoided, thereby avoiding the occurrence of TDM CCEs in the first control resource set. Therefore, the embodiment of the present invention can configure a control resource set with a larger time domain length.

In one or more embodiments of the present invention, the REG bundle size may be greater than or equal to the duration of the first control resource set.

In one or more embodiments of the present invention, the size of the control channel element CCE may be 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 of the control resource set. Therefore, even if a control resource set with a larger time domain length is configured, TDM CCEs can be avoided in the control resource set. Therefore, the embodiment of the present invention can configure a control resource set with a larger time domain length.

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

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.

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, which avoids the occurrence of TDM REG bundles in the first control resource set. Therefore, the embodiment of the present invention can configure a control resource set with a larger time domain length.

In one or more embodiments of the present invention, the REG numbering rule of the multiple first control resource sets is: for each first control resource set, the REGs of the first control resource set are processed starting from the first subscription number. serial number.

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

In one or more embodiments of the present invention, the numbering rule of the REG bundles of the multiple first control resource sets may be: for each first control resource set, the first control resource set starts from the second subscription number. The REG bundle is numbered.

In one or more embodiments of the present invention, the configuration information of the second control resource set may include the total number of the first control resource set to be divided into the second control resource set and/or the number of symbols of the first control resource set. number.

In one or more embodiments of the present invention, the configuration information of the second control resource set may include the number of symbols of the second control resource set;

According to the configuration information of the second control resource set, the network device divides the second control resource set into multiple first control resource sets, which may include:

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

In one or more embodiments of the present invention, step 202 may include:

Determine the candidate physical downlink control channel PDCCH according to the numbers of the CCEs of the multiple first control resource sets, where any two CCEs in the multiple first control resource sets have different numbers.

According to the numbering rule of the CCEs of the multiple first control resource sets, the CCEs of the multiple first control resource sets are numbered.

The numbering rules of the CCEs of the multiple first control resource sets may include:

Perform numbering step: sequentially number the j-th CCE in the multiple first control resource sets according to the order of the multiple first control resource sets;

After completing the numbering of the j-th CCE in the last first control resource set, use the number of the j-th CCE in the last first control resource set as the starting point for the next numbering, j=j+1, return to the execution number Steps, until all CCEs in the multiple first control resource sets are numbered; jε[1, a]; a represents the number of CCEs in a first control resource set.

For example, the second control resource set is divided into six first control resource sets, namely 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 from 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 number of the second CCE of Sub-coreset 0 is 6, the number of the second CCE of Sub-coreset 1 is 7, and the number of the second CCE of Sub-coreset 2 is 8...The second of Sub-coreset 5 The CCE number 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 can come from different first control resource sets. In this way, the CCEs with adjacent numbers are far apart and the first control resource set can be increased. Control the performance of the PDCCH transmitted on the resource set.

In one or more embodiments of the present invention, step 202 may include:

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

PDCCH to CCE group mapping 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 may include:

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 of the first control resource set and the control channel element CCE size to obtain at least one CCE of the first control resource set , Wherein one CCE includes at least one resource unit group REG bundle, and one resource unit group REG bundle includes at least one REG;

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

In the embodiment of the present invention, the user equipment numbers the REG bundles of the first control resource set, and performs CCE to REG mapping according to the number of the REG bundle and the CCE size to obtain at least one CCE of the first control resource set, thereby determining Candidate PDCCH of 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.

In one or more embodiments of the present invention, the user equipment performs CCE to REG conversion on the multiple resource element group REG bundles according to the number of the multiple resource element group REG bundles of the first control resource set and the control channel element CCE size. Mapping can include:

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

The unified interleaving mode can be a CCE to REG mapping mode that interleaves the numbers of multiple resource unit group REG bundles; the unified non-interleaved mode is a CCE to REG mapping mode that non-interleaves the numbers of multiple resource unit group REG bundles .

In one or more embodiments of the present invention, the numbering rule of multiple resource unit groups REG bundles may be:

The REG bundles of the resource unit groups in the lowest frequency domain in the first control resource set are numbered in sequence in the time domain; according to the order of the frequency domain of the first control resource set from low to high, the lower part of the first control resource set is The REG bundles of each resource unit group in a frequency domain are numbered sequentially in time domain order, until the REG bundles of all resource unit groups of the first control resource set are numbered;

or,

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

or,

The REG bundles of each resource unit group in the first time domain in the first control resource set are numbered 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 The resource unit group REG bundles in the next time domain of the set are numbered sequentially from low to high in the frequency domain, until all resource unit group REG bundles of the first control resource set are numbered;

The REG bundles of each resource unit group in the first time domain in the first control resource set 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 first control resource The resource unit group REG bundles in the next time domain of the set are numbered sequentially from high to low in the frequency domain, until all resource unit group REG bundles of the first control resource set are numbered.

The user equipment performs CCE to REG mapping for multiple resource unit group 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 resource unit group REG bundles, and the control channel element CCE size Mapping

In one or more embodiments of the present invention, the number of each resource unit group REG bundle in the plurality of resource unit group REG bundles may include a time domain number and a frequency domain number.

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

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

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

In one or more embodiments of the present invention, the REG bundle size can be configured in the time domain and/or frequency domain.

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.

According to the configuration information of the second control resource set, the user equipment divides the second control resource set into multiple first control resource sets, which may include:

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

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

In one or more embodiments of the present invention, the user equipment determining the candidate physical downlink control channel PDCCH of the first control resource set according to at least one CCE may include:

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.

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

The user equipment performs a numbering step: sequentially number the j-th CCE in the plurality of first control resource sets according to the order of the plurality of first control resource sets;

After the user equipment completes the numbering of the j-th CCE in the last first control resource set, it uses the number of the j-th CCE in the last first control resource set as the starting point of the next numbering, j=j+1, return Perform the numbering step until all CCEs in the multiple first control resource sets are numbered; jε[1, a]; a represents the number of CCEs in a first control resource set.

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

The user equipment maps the PDCCH to the CCE group on at least one CCE group to obtain the candidate physical downlink control channel PDCCH.

Since the method for determining the physical downlink control channel applied to the network equipment 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 equipment has been described in detail above, therefore, 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 by the following examples.

Fig. 4 shows a schematic flowchart of another embodiment of a method for determining a physical downlink control channel provided by 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 REG of Coreset.

As an example, the REGs in the Coreset can be numbered according to the principle of time domain first and frequency domain from low to high. For example, the REG number in Coreset is shown in Figure 3.

The method for determining the physical downlink control channel also includes:

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

Step 303: The network device numbers multiple REG bundles of Coreset, where one REG bundle has one number.

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

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

Alternatively, step 303 includes: the network device numbers the REG bundles in the highest frequency domain in the Coreset in sequence in the time domain; according to the order of the frequency domain of the Coreset, the next frequency domain of the Coreset is The REG bundles are numbered sequentially in time domain order, until all REG bundles of Coreset are numbered.

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

Alternatively, 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; according to the time domain sequence of the Coreset, the next time domain in the Coreset is The REG bundles are numbered in sequence from high to low in the frequency domain, until all REG bundles of Coreset are numbered.

The method for determining the physical downlink control channel also includes:

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

Among them, 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 interleaving mode, time domain non-interleaving mode and frequency domain interleaving mode.

The method for determining the physical downlink control channel also includes:

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

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

■Can be configured as one of the following modes:

◆Unified interweaving mode

◆Unified non-interlaced mode

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

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

◆Time domain interleaving mode + frequency domain interleaving mode

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

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

◆The number of REG bundles of TDM

◆Configuration or predefined uniform interleaving size

◆Configurable or predefined time domain interleaving size

◆Configurable or pre-defined 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 one or more embodiments of the present invention, in step 305, the CCE of TDM is considered for PDCCH-to-CCE mapping. For example, PDCCH-to-CCE group mapping is performed on a combination of CCEs containing multiple CCEs.

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

The time domain length (in symbols) that Coreset lasts is configured as

in,

Can be configured as 6 or 12. Coreset's frequency domain width (in PRB unit) 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, and the configured Coreset contains

●REG bundle: a combination of L REGs

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

●First, the REG is numbered according to the principle of time domain from front to back, and frequency domain from low to high. Specifically, starting from the lowest frequency domain of Coreset, the REGs in the same frequency domain in Coreset are numbered sequentially in time domain order, and the REGs on the next frequency domain of Coreset are sequentially numbered according to the order of Coreset frequency domain from low to high. Numbering is performed in the order of time domain until all REG numbers of Coreset are completed.

For example, if

The REG number 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}, and the 1st REG bundle contains {REG2,REG3},...

●According to different configured modes and interleaving functions, the REG bundle number contained in the j-th CCE is obtained, and the size of the time domain REG bundle contained in a CCE is pre-defined as 1:

■When configured in time domain non-interlaced and frequency domain non-interlaced 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 in 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}

◆...

Fig. 4 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 Coreset REG;

The user equipment combines Coreset REGs according to the number of Coreset REGs, configuration or predefined REG bundle size L, to form multiple REG bundles of Coreset, one REG bundle includes L REGs; REG bundle size L can pass the time domain And/or frequency domain respectively;

The user equipment numbers multiple REG bundles of Coreset, where one REG bundle has one number. Among them, the user equipment can uniformly number the REG bundles in a frequency domain followed by a time domain, or a time domain followed by a frequency domain;

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

The user equipment determines the candidate PDCCH according to at least one CCE of the Coreset. Thus, the user equipment can monitor the determined candidate PDCCH 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 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. 5 shows a schematic flowchart of another embodiment of a method for determining a physical downlink control channel provided by 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 REG of Coreset. As an example, the network device can number the REGs in the Coreset according to the principle of time domain first and frequency domain from low to high;

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

Step 403: The network device performs time domain numbering and frequency domain numbering on multiple REG bundles of Coreset, where one REG bundle has a time domain number and a frequency domain number;

In step 404, the network device compares the Coreset REG bundle 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 Coreset, and the configured or predefined CCE size. The bundle performs CCE to REG mapping to obtain 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;

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

It can be seen that the embodiment of the present invention considers the TDM REG bundle in the Coreset to perform CCE to REG mapping. In the embodiment of the present invention, the time domain number and the frequency domain number are respectively performed on the REG bundle, and the time domain interleaving and the frequency domain interleaving configuration are respectively performed. According to the time domain interleaving (or mapping) function/predefined rule and frequency domain interleaving (or mapping) function/predefined rule, each CCE contains the REG bundle and the time domain number and frequency domain number of the REG bundle are mapped and configured 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 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) functions/predefined rules are related to one or more of the following factors:

●The number of REG bundles of TDM

●Configuration or predefined time domain interleaving size

●Configurable or pre-defined frequency domain interleaving size

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

●Configured or pre-defined number of REG bundles included in each CCE frequency domain

In one or more embodiments of the present invention, in step 405, the CCE of TDM is considered for PDCCH-to-CCE mapping. For example, PDCCH-to-CCE group mapping is performed on a combination of CCEs containing multiple CCEs.

The method for determining the physical downlink control channel shown in FIG. 5 is further explained by using a specific example below.

The time domain length (in symbols) that Coreset lasts is configured as

in,

And each parameter is defined as follows:

●REG bundle: a combination of L REGs

For example, if

Then the REG number is shown in Figure 2 below.

● of (i _t, i _f) th REG bundle comprising

Wherein the number _REG N Coreset configured for Coreset, i _t REG bundle when the domain ID, i _f is the frequency domain REG bundle number;

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

●According to different configured modes and interleaving functions, the time domain number and frequency domain number of the REG bundle included in the j-th CCE are obtained, and the size of the time domain REG bundle included in a CCE is pre-defined as 3:

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

◆CCE 0->REG bundle{0,2,4}

◆CCE 1->REG bundle{1,3,5}

◆CCE2->REGbundle{0,2,4}

◆...

Fig. 5 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 Coreset REG. Among them, the user equipment can number the REGs in the Coreset according to the principle of time domain first and frequency domain from low to high;

The user equipment performs time domain numbering and frequency domain numbering on multiple REG bundles of Coreset, where one REG bundle has a time domain number and a frequency domain number;

The user equipment performs CCE on the Coreset REG bundle 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 Coreset REG bundle, and the configured or predefined CCE size Mapping to REG, obtains 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;

FIG. 6 shows a schematic flowchart of another embodiment of a method for determining a physical downlink control channel provided by 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 time domain first and frequency domain from low to high;

Step 502: The network device determines the REG bundle size and/or CCE size according to the number of Coreset symbols;

Step 503: The network device combines the REG of the Coreset according to the number of the REG of the Coreset and the size of the REG bundle to form multiple REG bundles;

Wherein, in the case that the REG bundle size is determined in step 502, the REG bundle size is determined in step 502. In the case that 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 multiple REG bundles of Coreset;

Step 505, the network device performs CCE to REG mapping on the multiple REG bundles of Coreset according to the number of multiple REG bundles of Coreset and the size of CCE to obtain at least one CCE of Coreset; wherein, the situation of determining the size of CCE in step 502 Next, the CCE size is determined in step 502. In the case that 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 Coreset. Therefore, the network device uses one of the candidate PDCCHs to carry the DCI and sends the DCI.

In one or more embodiments of the present invention, in step 506, the CCE of TDM is considered for PDCCH-to-CCE mapping. For example, PDCCH-to-CCE group mapping is performed on a combination of CCEs containing multiple CCEs.

The method for determining the physical downlink control channel shown in FIG. 6 is further explained by using a specific example below.

The time domain length (in symbols) that Coreset lasts is configured as

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

When configured in non-interleaved mode,

●When

REG bundle size is 6 and CCE size is 6;

●When

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

When configured as interleaving mode,

●When

REG bundle size can be configured to 2 or 6, CCE size is 6; ●When

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

Or 6, the CCE size is 6;

●When

At this time, the REG bundle size can be configured to 12, and the CCE size is 12.

Fig. 6 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 Coreset REG. For example, the network device numbers the REGs in the Coreset according to the principle of time domain first and frequency domain from low to high;

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

The user equipment combines the REG of the Coreset according to the number of the REG 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. In the case that the REG bundle size is not determined, the REG bundle size can be predefined or configured;

The user equipment numbers multiple REG bundles of Coreset;

The user equipment performs CCE to REG mapping on the multiple REG bundles of the Coreset according to the number of the multiple REG bundles of the Coreset and the CCE size to obtain at least one CCE of the Coreset. Among them, in the case of determining the size of the CCE, the size of the CCE is determined. In the case that the size of the CCE is not determined, the size of the CCE can be predefined or configured;

Fig. 7 shows a schematic flowchart of another embodiment of a method for determining a physical downlink control channel provided by 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 mentioned above, and the sub-coreset may be the first control resource set mentioned above; wherein, the number of symbols of one sub-coreset may be predefined or configured. The number of sub-coreset symbols can be related to the number of coreset symbols; the total number of sub-coresets can be predefined or configured. The total number of sub-coresets can be related to the number of coreset symbols;

Step 602: The network device numbers the REGs of multiple Sub-coresets; as an example, the REGs in each Sub-coreset may be numbered according to the principle of time domain first 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 first 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 REG0 to REG9,..., and the 10 REGs of Sub-coreset 5 are numbered REG0 to REG9;

Step 603: The network device executes for each Sub-coreset separately: according to the number of the REG of the Sub-coreset and the size of the REG bundle, combine the REGs of the Sub-coreset to form multiple REG bundles of the Sub-coreset;

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

As an example, the REGs in each Sub-coreset may be numbered according to the principle of time domain first and frequency domain from low to high. Or, the REGs in each Sub-coreset are numbered according to the principle of frequency domain first and time domain from low to high.

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 first and frequency domain from low to high, and the 5 REG bundles of Sub-coreset 0 The bundle numbers are REG0 to REG4. Similarly, the 5 REG bundles of Sub-coreset 1 are numbered REG0 to REG4,..., and the 5 REG bundles of Sub-coreset 5 are numbered REG0 to REG4.

The method for determining the physical downlink control channel may further include:

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 CCE size 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 according to the order of the multiple Sub-coresets. Step 606 is to perform numbering according to the principle of sub-coreset priority;

Step 607: The network device determines the candidate PDCCH according to the numbers of the CCEs of the multiple Sub-coresets. Therefore, the network device uses one of the candidate PDCCHs to carry the DCI and sends the DCI.

In one or more embodiments of the present invention, in step 607, the CCE of TDM is considered for PDCCH-to-CCE mapping. For example, PDCCH-to-CCE group mapping is performed on a combination of CCEs containing multiple CCEs.

The method for determining the physical downlink control channel shown in FIG. 7 is further described by using a specific example.

The time domain length (in symbols) that Coreset lasts is configured as

in,

At the same time, the symbol length for configuring the sub-coreset is 2, so for the Coreset configured with the number of symbols of 12, a total of 6 sub-coresets are included. For each Sub-coreset, CCE-to-REG mapping is performed in the traditional (legacy) way, as follows:

●First, number the REGs according to the principle of time domain from front to back, and frequency domain from low to high. After numbering the REGs of the 6 Sub-coresets, combine the REGs of each Sub-coreset 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;

■For interleaved CCE-to-REG mapping, L∈{2,6}for

for

And the interleaving function is:

x=cR+rr=0,1,...,R-1

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

Among them, R is the interleaving size, R can be configured as 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 6 Sub-coreset -The order of coreset, numbering the CCEs of the 6 Sub-coresets, that is, the CCE number corresponding to (s, c) is j=c*N _s +s, where N _s is the number of sub-coresets.

For 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 Rel-15 REG-Bundling definition.

Fig. 7 is a method for determining a physical downlink control channel applied to a network device. Accordingly, 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:

User equipment divides 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 first and frequency domain from low to high;

The user equipment separately executes for each Sub-coreset: according to the number of the REG of the Sub-coreset and the size of the REG bundle, combine the REGs of the Sub-coreset to form multiple REG bundles of the Sub-coreset;

The user equipment numbers the REG bundles of multiple Sub-coresets. As an example, the REGs in each Sub-coreset may be numbered according to the principle of time domain first and frequency domain from low to high. Or, the REGs in each Sub-coreset are numbered according to the principle of frequency domain first and time domain from low to high;

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

Fig. 8 shows a schematic structural diagram of another embodiment of the apparatus for determining a physical downlink control channel provided by the present invention. As shown in FIG. 8, the device 700 for determining a physical downlink control channel includes:

The first mapping module 701 is configured to perform CCE to REG mapping on multiple REG bundles according to the number and CCE size of multiple REG bundles in the first control resource set to obtain at least one CCE in the first control resource set, where: One CCE includes at least one REG bundle, and one REG bundle includes at least one REG;

The channel determining module 702 is configured to determine the candidate PDCCH of the first control resource set according to at least one CCE of the first control resource set.

In the embodiment of the present invention, the REG bundles of the first control resource set are numbered, and the CCE to REG mapping is performed according to the number of the REG bundles and the CCE size to obtain at least one CCE of the first control resource set, thereby determining the first control resource set. A candidate PDCCH for the 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 device for determining the physical downlink control channel can be applied to user equipment or network equipment.

In one or more embodiments of the present invention, the first mapping module 701 may be specifically used to:

According to the mapping rule of the first pre-configuration mode, the number of the multiple REG bundles and the CCE size, the multiple REG bundles are mapped from CCE to REG;

Among them, the first pre-configured mode may be 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 interleaving mode, time domain non-interleaving mode and frequency domain interleaving mode;

The unified interleaving mode may be a CCE to REG mapping mode that interleaves the numbers of multiple REG bundles; the unified non-interleaving mode may be a CCE to REG mapping mode that non-interleaves the numbers of multiple REG bundles.

In one or more embodiments of the present invention, the apparatus 700 for determining a physical downlink control channel may further include:

The first numbering module is used for numbering multiple resource unit group REG bundles according to the numbering rule of multiple resource unit group REG bundles.

The numbering rules of multiple REG bundles can be:

The REG bundles in the lowest frequency domain in the first control resource set are numbered sequentially 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 on the above are numbered sequentially in time domain order, until all REG bundles in the first control resource set are numbered;

or,

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

or,

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

or,

In one or more embodiments of the present invention, the first mapping module 701 may be used to:

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, the CCE to REG mapping is performed on the multiple REG bundles;

In one or more embodiments of the present invention, the number of each REG bundle in the plurality of REG bundles may include a time domain number and a frequency domain number.

The REG bundle determining module is configured to determine multiple REG bundles according to the size of the REG bundle and the REG of the first control resource set;

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

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

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

The division module can include:

An information determining module, configured to determine the total number of first control resource sets to be divided into the second control resource set and/or the number of symbols in a first control resource set according to the number of symbols in the second control resource set;

The control resource set dividing module is configured to divide the first control resource set into a plurality of first control resource sets according to the total number of the first control resource sets and/or the number of symbols of a first control resource set.

In one or more embodiments of the present invention, the channel determining module 702 may be configured to determine the candidate physical downlink control channel PDCCH according to the numbers of the CCEs of the multiple first control resource sets;

The second numbering module is configured to number the CCEs of the multiple first control resource sets according to the numbering rules of the CCEs of the multiple first control resource sets.

In one or more embodiments of the present invention, the channel determination module 702 may include:

The CCE combination module is used to combine at least one CCE in the first control resource set to obtain at least one CCE group, where one CCE group includes at least one CCE;

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

An embodiment of the present invention also provides a network device, including a processor, a memory, and a computer program stored on the memory and capable of running on the processor. The computer program implements any of the foregoing when executed by the processor. Steps of a method for determining a physical downlink control channel in an embodiment.

FIG. 9 shows a schematic diagram of the 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 REG bundles according to the number and CCE size of the multiple REG bundles in the first control resource set to obtain at least one CCE in the first control resource set, where: One CCE includes at least one REG bundle, and one 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.

Specifically, the foregoing 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.

The memory 802 may include mass storage for data or instructions. For example and not limitation, the memory 802 may include a hard disk drive (Hard Disk Drive, HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a Universal Serial Bus (USB) drive, or two or more Multiple combinations of these. Where appropriate, the storage 802 may include removable or non-removable (or fixed) media. Where appropriate, the memory 802 may be inside or outside the integrated gateway disaster recovery device. In a particular embodiment, the memory 802 is a non-volatile solid-state memory. In a particular embodiment, the memory 802 includes read-only memory (ROM). Where appropriate, the ROM can be 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 these.

The processor 801 reads and executes the computer program instructions stored in the memory 802 to implement any one of the physical downlink control channel determination methods in the foregoing embodiments.

In an example, the network device may further 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 a bus 810 and complete mutual communication.

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

The bus 810 includes hardware, software, or both, and couples the components of the network device to each other. For 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, unlimited bandwidth 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 these. Where appropriate, the bus 810 may include one or more buses. Although the embodiments of the present invention describe and show a specific bus, the present invention contemplates any suitable bus or interconnection.

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

The embodiment of the present invention also provides a network device, including a processor, a memory, and a computer program stored on the memory and running on the processor. The computer program is executed by the processor to implement the method for determining the physical downlink control channel. Each process of the example, and can achieve the same technical effect, in order to avoid repetition, I will not repeat them here.

An embodiment of the present invention also provides a user equipment, including a processor, a memory, and a computer program stored on the memory and running on the processor. When the computer program is executed by the processor, the The processes in the embodiments of the method for determining the physical downlink control channel can achieve the same technical effect. In order to avoid repetition, details are not repeated here.

FIG. 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 The unit 906, the user input unit 907, the interface unit 908, the memory 909, the processor 910, and the 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. The user equipment may include more or less components than those shown in the figure, or a combination of certain components, or different components. Layout. In the embodiment of the present invention, 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, and a pedometer.

The processor 910 is configured to perform CCE to REG mapping on the multiple REG bundles according to the number of the multiple REG bundles of the first control resource set and the CCE size to obtain at least one CCE of the first control resource set, where: One CCE includes at least one REG bundle, and one REG bundle includes at least one REG; according to the at least one CCE, the candidate PDCCH of the first control resource set is determined.

In the embodiment of the present invention, the REG bundles of the first control resource set are numbered, and the CCE to REG mapping is performed according to the number of the REG bundle and the CCE size to obtain at least one CCE of the first control resource set, thereby determining the first control resource Candidate PDCCH of 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 the embodiment of the present invention, the radio frequency unit 901 can be used for receiving and sending signals in the process of sending and receiving information or talking. Specifically, after receiving the downlink data from the base station, it is processed by the processor 910; 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 webpages, and access streaming media.

The audio output unit 903 can convert the audio data received by the radio frequency unit 901 or the network module 902 or stored in the memory 909 into an audio signal and output it as sound. Moreover, the audio output unit 903 may also provide audio output related to a specific function performed by the user equipment 900 (for example, 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 processing unit (GPU) 9041 and a microphone 9042. The graphics processor 9041 is configured to provide an image of a still picture or video 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 frame 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 sent 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 sent to a mobile communication base station via the radio frequency unit 901 for output in the case of a telephone call mode.

The user equipment 900 also includes at least one sensor 905, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 9061 according to the brightness of the ambient light. The proximity sensor can close the display panel 9061 and the display panel 9061 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 various directions (usually three axes), and can detect the magnitude and direction of gravity when it is stationary, and can be used to identify the posture of the user equipment (such as horizontal and vertical screen switching, related games). , Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc.; sensor 905 can also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, Infrared sensors, etc., will not be 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), etc.

The user input unit 907 may be used to receive input numeric 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 called a touch screen, can collect the user's touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 9071 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 position, 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 processor 910, the command sent by the processor 910 is received and executed. In addition, the touch panel 9071 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave. 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, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.

Further, the touch panel 9071 can cover 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 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 implement the input and output functions of the user equipment, in some embodiments, the touch panel 9071 and the display panel 9061 can be integrated The implementation of the input and output functions of the user equipment is not specifically limited here.

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

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

The processor 910 is the control center of the user equipment. It uses various interfaces and lines to connect various parts of the entire user equipment, runs or executes software programs and/or modules stored in the memory 909, and calls 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, where the application processor mainly processes the operating system, user interface, application programs, etc., and the modem The processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 910.

The user equipment 900 may also include a power source 911 (such as a battery) for supplying power to various components. Preferably, the power source 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 functional modules not shown, which will not be repeated here.

The embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, each process of the above-mentioned physical downlink control channel determination method embodiment is realized, and can be To achieve the same technical effect, in order to avoid repetition, I will not repeat them here. Wherein, examples of the computer-readable storage medium include non-transitory computer-readable storage media, such as read-only memory (Read-Only Memory, ROM for short), Random Access Memory (RAM for short), and magnetic CD or CD, etc.

The embodiment of the present invention also provides a computer program product. The program product is executed by at least one processor to implement each process of the physical downlink control channel determination method of any one of the above embodiments, and can achieve the same technical effect. In order to avoid repetition , I won’t repeat it here.

The embodiment of the present invention also provides a user equipment, which is configured to execute each process of the method for determining a physical downlink control channel of any one of the above embodiments, and can achieve the same technical effect. In order to avoid repetition, I won't repeat it here.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements that are not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or device that includes the element.

It should also be noted that the flowcharts and block diagrams in the drawings illustrate the architecture, functions, and operations of possible implementations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram may represent a module, segment, or part of code, and the module, segment, or part of code includes one or Multiple executable instructions. It should also be noted that in some alternative implementations, the functions marked in the block may also occur in a different order from the order marked in the drawings. For example, depending on the functions involved, two blocks shown in succession may actually be executed substantially simultaneously, or the blocks may sometimes be executed in the reverse order. It should also be noted that each block in the block diagram and/or flowchart, and a combination of blocks in the block diagram and/or flowchart, can be implemented by a dedicated hardware-based system that performs the specified function or action, or It can be implemented by a combination of dedicated hardware and computer instructions.

Through the description of the above implementation manners, those skilled in the art can clearly understand that the above-mentioned embodiment method can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is better.的实施方式。 Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes a number of instructions to enable a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the method described in each embodiment of the present invention.

The embodiments of the present invention are described above with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present invention, many forms can be made without departing from the purpose of the present invention and the scope of protection of the claims, all of which fall within the protection of the present invention.

Claims

A method for determining a physical downlink control channel includes:

According to the number of the multiple resource element group REG bundles of the first control resource set and the control channel element CCE size, the CCE to REG mapping is performed on the multiple resource element group REG bundles to obtain at least the first control resource set One CCE, one CCE includes at least one REG bundle, and one REG bundle includes at least one REG;

According to the at least one CCE, a candidate physical downlink control channel PDCCH of the first control resource set is determined.
The method according to claim 1, wherein the CCE to REG is performed on the plurality of resource element group REG bundles according to the number of the plurality of resource element group REG bundles of the first control resource set and the control channel element CCE size. The mapping includes:

According to the mapping rule of the first pre-configuration mode, the number of the plurality of resource element group REG bundles and the size of the control channel element CCE, the CCE to REG mapping is performed on the plurality of 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, 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 that interleaves the numbers of the multiple resource unit group REG bundles; the unified non-interleaving mode is non-interleaving the numbers of the multiple resource unit group REG bundles CCE to REG mapping mode.
The method of claim 2, wherein:

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

The mapping rule of the time-domain interleaving pattern 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 time-domain interleaving size, and the pre-configured 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 frequency-domain interleaving pattern 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 frequency-domain interleaving size, and the pre-configured 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-interleaved 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 number of pre-configured or predefined REG bundles included in each CCE in the frequency domain;

The mapping rule of the frequency-domain non-interlaced 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 is the number of pre-configured or predefined REG bundles included in each CCE in the frequency domain.
The method according to claim 2, wherein the method further comprises:

Numbering the plurality of resource unit group REG bundles according to the numbering rule of the plurality of resource unit group REG bundles,

Wherein, the numbering rule of the multiple resource unit groups REG bundles is:

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

or,

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

or,

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

or,

The REG bundles in the first time domain in the first control resource set 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 first control resource set is Each REG bundle in the next time domain of a control resource set is numbered sequentially from high to low in the frequency domain, until all REG bundles of the first control resource set are numbered.
The method according to claim 1, wherein the CCE to REG is performed on the plurality of resource element group REG bundles according to the number of the plurality of resource element group REG bundles of the first control resource set and the control channel element CCE size. The mapping 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 plurality of resource unit group REG bundles, and the size of the control channel element CCE, the REG bundles of the plurality of resource unit groups are performed CCE to REG mapping,

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 method of claim 5, wherein:

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

The mapping rule of the frequency-domain non-interleaved mode is related to at least one of the following: the number of TDM REG bundles in the first control resource set, and the pre-configured or pre-defined CCE included in the time domain The number of REG bundles is the number of pre-configured or predefined REG bundles included in each CCE in the frequency domain.
The method according to claim 5, wherein the number of each REG bundle in the plurality of resource unit group REG bundles includes a time domain number and a frequency domain number.
The method according to any one of claims 1-7, wherein the number of REG bundles of the plurality of resource element groups in the first control resource set and the size of the control channel element CCE are used to perform the Before the REG bundle performs CCE to REG mapping, the method further includes:

Determining the plurality of resource unit groups REG bundles according to the size of the REG bundle and the REG of the first control resource set,

The size of the REG bundle is related to the number of symbols in the first control resource set.
The method according to any one of claims 1-7, wherein the size of the CCE is related to the number of symbols in the first control resource set.
The method according to any one of claims 1-7, wherein the REG bundle size is configured according to the time domain and/or frequency domain.
The method according to any one of claims 1-7, wherein the number of REG bundles of the plurality of resource element groups in the first control resource set and the size of the control channel element CCE are used to perform the Before the REG bundle performs CCE to REG mapping, 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.
The method according to claim 11, wherein the configuration information of the second control resource set includes the total number of the first control resource sets to be divided into the second control resource set and/or one of the first control resources The number of symbols in the set.
The method according to claim 11, wherein the configuration information of the second control resource set includes 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 includes:

Determining, according to the number of symbols in the second control resource set, the total number of first control resource sets to be divided into the second control resource set and/or the number of symbols in the first control resource set;

According to the total number of the first control resource sets and/or the number of symbols of the first control resource set, the first control resource set is divided into the multiple first control resource sets.
The method according to claim 11, wherein the determining the candidate physical downlink control channel PDCCH of the first control resource set according to the at least one CCE comprises:

Determine the candidate physical downlink control channel PDCCH according to the numbers of the CCEs of the multiple first control resource sets,

The numbers of any two CCEs in the multiple first control resource sets are different.
The method according to claim 14, wherein the method further comprises:

Numbering the CCEs of the multiple first control resource sets according to the numbering rules of the CCEs of the multiple first control resource sets,

Wherein, the numbering rules of the CCEs of the multiple first control resource sets include:

Perform numbering step: sequentially number the j-th CCE in the plurality of first control resource sets according to the order of the plurality of first control resource sets;

After the numbering of the j-th CCE in the last said first control resource set is completed, the number of the j-th CCE in the last first control resource set is taken as the starting point of the next numbering, j=j+1, return Perform the numbering step until all CCEs in the multiple first control resource sets are numbered; jε[1, a]; a represents the number of CCEs in one first control resource set.
The method according to any one of claims 1-15, wherein the determining the candidate physical downlink control channel PDCCH of the first control resource set according to the at least one CCE comprises:

Combining the at least one CCE of the first control resource set to obtain at least one CCE group, and one of the CCE groups includes at least one of the CCEs;

Mapping the PDCCH to the CCE group is performed on the at least one CCE group to obtain the candidate physical downlink control channel PDCCH.
A device for determining a physical downlink control channel includes:

The first mapping module 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 of the first control resource set and the control channel element CCE size to obtain the At least one CCE in the first control resource set, one CCE includes at least one REG bundle, and one REG bundle includes at least one REG;

The channel determining module is configured to determine the candidate physical downlink control channel PDCCH of the first control resource set according to the at least one CCE.
The apparatus according to claim 17, wherein the first mapping module is configured to:

According to the mapping rule of the first pre-configuration mode, the number of the plurality of resource element group REG bundles and the size of the control channel element CCE, the CCE to REG mapping is performed on the plurality of 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, 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 that interleaves the numbers of the multiple resource unit group REG bundles; the unified non-interleaving mode is non-interleaving the numbers of the multiple resource unit group REG bundles CCE to REG mapping mode.
The device of claim 18, wherein:

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

The mapping rule of the time-domain interleaving pattern 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 time-domain interleaving size, and the pre-configured 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 frequency-domain interleaving pattern 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 frequency-domain interleaving size, and the pre-configured 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-interleaved 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 number of pre-configured or predefined REG bundles included in each CCE in the frequency domain;

The mapping rule of the frequency-domain non-interlaced 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 is the number of pre-configured or predefined REG bundles included in each CCE in the frequency domain.
The device according to claim 18, wherein the device further comprises:

The first numbering module is configured to number the multiple resource unit group REG bundles according to the numbering rule of the multiple resource unit group REG bundles,

Wherein, the numbering rule of the multiple resource unit groups REG bundles is:

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

or,

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

or,

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

or,

The REG bundles in the first time domain in the first control resource set 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 first control resource set is Each REG bundle in the next time domain of a control resource set is numbered sequentially from high to low in the frequency domain, until all REG bundles of the first control resource set are numbered.
The apparatus according to claim 17, wherein the first mapping module is configured to:

According to the mapping rule of the second pre-configuration mode, the mapping rule of the third pre-configuration mode, the number of the plurality of resource unit group REG bundles, and the size of the control channel element CCE, the REG bundles of the plurality of resource unit groups are performed CCE to REG mapping,

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 device according to claim 21, wherein:

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

The mapping rule of the frequency-domain non-interleaved mode is related to at least one of the following: the number of TDM REG bundles in the first control resource set, and the pre-configured or pre-defined CCE included in the time domain The number of REG bundles is the number of pre-configured or predefined REG bundles included in each CCE in the frequency domain.
The apparatus according to claim 21, wherein the number of each REG bundle in the plurality of resource unit group REG bundles includes a time domain number and a frequency domain number.
The device according to any one of claims 17-23, wherein the device further comprises:

The REG bundle determining module is configured to determine the plurality of resource unit groups REG bundles according to the REG bundle size and the REG of the first control resource set, the REG bundle size and the number of symbols in the first control resource set Related.
The apparatus according to any one of claims 17-23, wherein the size of the CCE is related to the number of symbols in the first control resource set.
The apparatus according to any one of claims 17-23, wherein the REG bundle size is configured according to the time domain and/or the frequency domain.
The device according to any one of claims 17-23, wherein the device further comprises:

The dividing module is configured to divide the second control resource set into multiple first control resource sets according to the configuration information of the second control resource set.
The apparatus according to claim 27, wherein the configuration information of the second control resource set comprises the total number of the first control resource sets to be divided into the second control resource set and/or one of the first control resources The number of symbols in the set.
The apparatus according to claim 27, wherein the configuration information of the second control resource set includes the number of symbols of the second control resource set;

The division module includes:

The information determining module is configured to determine, according to the number of symbols in the second control resource set, the total number of the first control resource set to be divided into the second control resource set and/or the number of the first control resource set The number of symbols;

The control resource set dividing module is configured to divide the first control resource set into the plurality of first control resources according to the total number of the first control resource sets and/or the number of symbols of the first control resource set Resource set.
The apparatus according to claim 27, wherein the channel determination module is configured to:

The candidate physical downlink control channel PDCCH is determined according to the numbers of the CCEs of the multiple first control resource sets, and the numbers of any two CCEs in the multiple first control resource sets are different.
The device according to claim 27, wherein the device further comprises:

The second numbering module is configured to number the CCEs of the multiple first control resource sets according to the numbering rules of the CCEs of the multiple first control resource sets;

Wherein, the numbering rules of the CCEs of the multiple first control resource sets include:

Perform numbering step: sequentially number the j-th CCE in the plurality of first control resource sets according to the order of the plurality of first control resource sets;

After the numbering of the j-th CCE in the last said first control resource set is completed, the number of the j-th CCE in the last first control resource set is taken as the starting point of the next numbering, j=j+1, return Perform the numbering step until all CCEs in the multiple first control resource sets are numbered; jε[1, a]; a represents the number of CCEs in one first control resource set.
The device according to any one of claims 17-31, wherein the channel determination module comprises:

The CCE combination module is configured to combine the at least one CCE of the first control resource set to obtain at least one CCE group, and one of the CCE groups includes at least one of the CCEs;

The second mapping module is configured to map the PDCCH to the CCE group on the at least one CCE group to obtain the candidate physical downlink control channel PDCCH.
A network device, comprising a processor, a memory, and a computer program stored on the memory and capable of running on the processor. The computer program is executed by the processor to implement any of claims 1 to 16 One of the steps of the method for determining the physical downlink control channel.
A user equipment comprising a processor, a memory, and a computer program stored on the memory and capable of running on the processor, the computer program being executed by the processor realizes any of claims 1 to 16 One of the steps of the method for determining the physical downlink control channel.
A computer-readable storage medium storing a computer program on the computer-readable storage medium, and when the computer program is executed by a processor, the method for determining a physical downlink control channel according to any one of claims 1 to 16 is implemented A step of.
A computer program product, wherein the program product is executed by at least one processor to implement the steps of the method for determining a physical downlink control channel according to any one of claims 1 to 16.
A user equipment configured to implement the steps of the method for determining a physical downlink control channel according to any one of claims 1 to 16.