CN113115448B

CN113115448B - Method, device, equipment and medium for determining physical downlink control channel

Info

Publication number: CN113115448B
Application number: CN202010033968.XA
Authority: CN
Inventors: 李�根; 沈晓冬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2023-04-07
Anticipated expiration: 2040-01-13
Also published as: CN113115448A; WO2021143662A1

Abstract

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

Description

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

Technical Field

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

Background

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

If the NR operates in a high frequency band (e.g., 57-71 GHz) and supports large bandwidth carriers, then currently the sub-carrier spacing (SCS, such as 60KHz/120 KHz) used by FR2 (24250 MHz-52600MHz, also known as Above-6GHz or mm wave) is no longer applicable, requiring the introduction of a larger SCS to reduce the required Fast Fourier Transform (FFT) size (size). In this case, the length of each symbol is reduced due to the increased SCS. If the maximum number of symbols of Coreset configuration is not changed, the absolute time of Coreset is reduced, and the performance of PDCCH transmitted on Coreset is affected.

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

Disclosure of Invention

The embodiment of the invention provides a method for determining a physical downlink control channel, which is used for solving the problem that a scheme for configuring Coreset with larger time domain length cannot be realized at present.

In order to solve the technical problem, the invention is realized as follows:

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

mapping CCE-to-REG on a plurality of Resource Element Group (REG) bundles of a first control resource set according to the number of the Resource Element Group (REG) bundles and the size of a Control Channel Element (CCE), so as to obtain at least one CCE of the first control resource set, wherein one CCE comprises at least one Resource Element Group (REG) bundle, and one Resource Element Group (REG) bundle comprises at least one REG;

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

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

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

a channel determination module, configured to determine a 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, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the method for determining a physical downlink control channel.

In a fourth aspect, an embodiment of the present invention provides a user equipment, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the method for determining a physical downlink control channel.

In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the steps of the method for determining a physical downlink control channel.

In the embodiment of the invention, the REG bundle of the first control resource set is numbered, and mapping from CCE to REG is carried out according to the number of the REG bundle and the size of the CCE to obtain at least one CCE of the first control resource set, thereby determining the PDCCH candidate of the first control resource set. Therefore, the candidate PDCCH may be determined according to the above scheme, so that a control resource set of a larger time domain length may be configured.

Drawings

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

fig. 2 is a flowchart illustrating a method for determining a physical downlink control channel according to an embodiment of the present invention;

FIG. 3 illustrates a diagram of REG numbering for one embodiment provided by the present invention;

fig. 4 is a flowchart illustrating a method for determining a physical downlink control channel according to another embodiment of the present invention;

fig. 5 is a flowchart illustrating a method for determining a physical downlink control channel according to another embodiment of the present invention;

fig. 6 is a flowchart illustrating a method for determining a physical downlink control channel according to still another embodiment of the present invention;

fig. 7 is a flowchart illustrating a method for determining a physical downlink control channel according to still another embodiment of the present invention;

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

FIG. 9 is a diagram illustrating a hardware configuration of a network device according to an embodiment of the present invention;

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

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

To better illustrate the solution of the embodiment of the invention, the Coreset configuration of NR Rel15 is described below.

In NR Rel15, coreset is a definition similar to the LTE PDCCH control domain, which may be all or part of PRBs configured in the BWP frequency domain. Meanwhile, the length of time (in symbol) for Coreset duration may be configured as 1,2 or 3. Meanwhile, resources related to Coreset are defined as follows:

resource Element Group (REG): a Resource element group occupying 1 symbol in a time domain and 1 Physical Resource Block (PRB) in a frequency domain;

● REG bundle (REG bundle): a combination of L REGs, L being configurable by a Radio Resource Control (RRC) parameter REG-bundle-size;

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

■ For interleaved CCE-to-REG mapping, L may be configured to be 2 or 6 when Coreset symbol number is configured to be 1; when the Coreset symbol number is configured to be 2 or 3, L may be configured to be the Coreset symbol number or 6;

● Control-channel element (CCE): contains 6 REGs and maps according to the CCE-to-REG mapping rule described below.

The CCE-to-REG mapping may be configured in an interleaved or non-interleaved form and is done at a REG bundle granularity as follows:

● Firstly, numbering REGs according to the principle that a time domain is from front to back and a frequency domain is from low to high;

the ith REG bundle contains REG { i × L, i × L +1, …, i × L + L-1}, i =0,1, …, N _Coreset In which N is _Coreset The number of REGs configured for Coreset;

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

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

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

and

for/>

And the interleaving function is

x＝cR+r

r＝0,1,…,R-1

c＝0,1,…,C-1

Wherein R is the interleave size (interleaver size), which can be configured as 2,3 or

6, and N _Coreset V (L R) is an integer; n is a radical of an alkyl radical _shift E {0,1, …,274} can pass higher layer parameters

Configuring shiftIndex, otherwise

When the high-level parameter precoding granularity is configured as sameAsRWhen EG-bundle, user Equipment (UE) assumes that precoding (precoding) within one REG bundle is the same;

when the higher layer parameter precoding granularity is configured as all contigousrbs, the UE assumes that precoding on consecutive REGs within the coreset is the same and that consecutive REGs do not overlap with Resource Elements (REs) of the Long Term Evolution (LTE) Cell Reference Signal (CRS) configured in any SSB or DSS case.

For Coreset 0, the ue assumes interleaved coding, L =6, r =2,

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

step 101, the network device determines candidate PDCCHs according to the pre-configuration information.

The network device may include a base station, among others. The pre-configuration information may include at least one of: the number of symbols of the resource set, the size of REG bundle, the size of CCE, the mapping mode from CCE to REG, and the mapping rule of the mapping mode are controlled.

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

And step 103, the user equipment determines the 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.

Wherein the pre-configuration information may include at least one of: the number of symbols of the resource set, the size of REG bundle, the size of CCE, the mapping mode from CCE to REG, and the mapping rule of the mapping mode are controlled.

In step 104, the ue monitors the determined candidate PDCCHs to receive DCI carried by one of the candidate PDCCHs.

Based on the above system architecture, fig. 2 is a flowchart illustrating a method for determining a physical downlink control channel according to an embodiment of the present invention. The method for determining a physical downlink control channel is applied to a network device (e.g., a base station), and as shown in fig. 2, the method for determining a physical downlink control channel includes:

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

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

In the embodiment of the invention, the network equipment numbers the REG bundle of the first control resource set, and performs mapping from CCE to REG according to the number of the REG bundle and the size of the CCE to obtain at least one CCE of the first control resource set, thereby determining the PDCCH candidate of the first control resource set. Therefore, the candidate PDCCH may be determined according to the above scheme, so that a control resource set of a larger time domain length may be configured.

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

the network equipment maps the CCE to the REG for the plurality of REG bundles according to the mapping rule of the first pre-configuration mode, the number of the plurality of REG bundles and the size of the control channel element CCE;

wherein the first preconfigured mode is one of: the method comprises the following steps of (1) unifying an interleaving mode, unifying a non-interleaving mode, a time domain interleaving mode and a frequency domain non-interleaving mode, a time domain non-interleaving mode and a frequency domain non-interleaving mode, a time domain interleaving mode and a frequency domain interleaving mode, a time domain non-interleaving mode and a frequency domain interleaving mode;

the uniform interleaving pattern is a CCE-to-REG mapping pattern that interleaves the numbers of the multiple REG bundles; the uniform non-interleaved pattern is a CCE to REG mapping pattern in which the numbers of the plurality of REG bundles are non-interleaved.

In the embodiment of the invention, in order to avoid the influence on the PDCCH performance transmitted on the control resource set, the control resource set with larger time domain length can be configured. If a control resource set with a larger Time domain length is configured, a Time Division Multiplexing (TDM) REG bundle may occur in the control resource set, for example, REG0 and REG1 in fig. 3 are one REG bundle, REG2 and REG3 are another REG bundle, and since the two REG bundles belong to the same frequency domain, the two REG bundles are TDM REG bundles. When the TDM REG bundle occurs in the control resource set, the REG bundle in the control resource set can be processed according to the scheme of the embodiment of the present invention. Therefore, the REG bundle of the TDM can appear in the control resource set of the embodiment of the present invention, so that the control resource set with a larger time domain length can be configured.

Optionally, in one or more embodiments of the invention, the mapping rules of the unified interleaving mode are related to at least one of the following: the method comprises the steps of controlling the number of REG bundles of time division multiplexing TDM in a first control resource set, pre-configuring or pre-defining uniform interleaving size, pre-configuring or pre-defining the number of REG bundles contained in each CCE in a time domain, and pre-configuring or pre-defining the number of REG bundles contained in each CCE in a frequency domain;

the mapping rules for the unified non-interleaved mode are related to at least one of: the method comprises the steps of controlling the number of REG bundles of TDM in a resource set, pre-configuring or pre-defining the number of REG bundles contained in each CCE in a time domain, and pre-configuring or pre-defining the number of REG bundles contained in each CCE in a frequency domain;

the mapping rule of the time domain interleaving pattern is related to one or more of the following factors: the method comprises the steps of controlling the number of REG bundles of TDM in a first control resource set, pre-configuring or pre-defining the time domain interleaving size, pre-configuring or pre-defining the number of REG bundles contained in each CCE on a time domain, and pre-configuring or pre-defining the number of REG bundles contained in each CCE on a frequency domain;

the mapping rule of the frequency domain interleaving pattern is related to one or more of the following factors: the method comprises the steps of controlling the number of REG bundles of TDM in a first control resource set, configuring or predefining frequency domain interleaving size in advance, configuring or predefining the number of REG bundles contained in each CCE in a time domain in advance, and configuring or predefining the number of REG bundles contained in each CCE in a frequency domain in advance;

the mapping rules for the time-domain non-interleaved mode may be related to one or more of the following factors: the method comprises the steps of controlling the number of REG bundles of TDM in a resource set, pre-configuring or pre-defining the number of REG bundles contained in each CCE in a time domain, and pre-configuring or pre-defining the number of REG bundles contained in each CCE in a frequency domain;

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

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

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

numbering each REG on the lowest frequency domain in the first control resource set according to the time domain sequence; and numbering each REG on the next frequency domain of the first control resource set according to the sequence of the frequency domains of the first control resource set from low to high in sequence according to the time domain sequence until all REGs of the first control resource set are numbered.

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

For example, referring to fig. 3, the lowest REGs in the frequency domain are numbered REG0 to REG11. Then, based on the code REG11, the next lower REGs in the frequency domain are numbered REG12 to REG23. And so on until all REG numbering for the first controlling resource set is completed.

The REG bundles may be uniformly numbered in a frequency domain first and then a time domain, or a time domain first and then a frequency domain.

The method comprises the following specific steps:

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

numbering each REG bundle on the lowest frequency domain in the first control resource set according to the time domain sequence; and numbering the REG bundles on the next frequency domain of the first control resource set according to the sequence of the frequency domains of the first control resource set from low to high in sequence according to the time domain sequence until all the REG bundles of the first control resource set are numbered. Wherein one REG bundle may have one number.

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

The 6 REG bundles, which are formed by combining REGs 12 to 23, are numbered REG bundles 6 to 10, respectively. By analogy, numbering of 36 REG bundles formed by combining REG0 to REG71, respectively REG bundle 0 to REG bundle 35, is achieved.

numbering each REG bundle on the highest frequency domain in the first control resource set according to the time domain sequence; and numbering the REG bundles on the next frequency domain of the first control resource set in sequence from high to low according to the frequency domain of the first control resource set until all the REG bundles of the first control resource set are numbered.

For example, when the numbering result of the REGs of the first controlled resource set is shown in fig. 3, and the REG bundle size is 2 REGs in the time domain, all REG bundles in the highest frequency domain in the first controlled resource set are numbered sequentially in time domain, that is, 6 REG bundles formed by combining REG60 to REG71 are numbered, so that the REG bundle formed by combining REG60 and REG61 is numbered as REG bundle 0, and the REG bundle formed by combining REG62 and REG63 is numbered as REG bundle 1 …, and the REG bundle formed by combining REG70 and REG71 is numbered as REG bundle 5.

The 6 REG bundles, which are formed by combining REGs 48 to 59, are numbered REG bundles 6 to 10, respectively. By analogy, numbering of 36 REG bundles formed by combining REG0 to REG71, respectively REG bundle 0 to REG bundle 35, is achieved.

numbering the REG bundles in the time domain starting at first in the first control resource set from low to high in sequence according to the frequency domain; and numbering the REG bundles on the next time domain of the first control resource set from low to high in sequence according to the time domain sequence of the first control resource set until all the REG bundles of the first control resource set are numbered. Wherein one REG bundle may have one number.

For example, when the numbering result of REGs of the first control resource set is as shown in fig. 3, and the REG bundle size is 2 REGs in the time domain, starting from the first time domain of the first control resource set, numbering each REG bundle in the first time domain first, and numbering the REG bundle formed by REG0 and REG1 as REG bundle 0; REG bundle numbers REG bundle 1 … formed by REG12 and REG13 and REG bundle numbers REG bundle 5 formed by REG60 and REG 61.

After numbering the REG bundles in the first time domain, numbering the REG bundles in the second time domain, wherein the numbering manner of the REG bundles in the second time domain is similar to that of the REG bundles in the first time domain, and the numbering of the REG bundles in the second time domain is not repeated herein.

According to the above numbering rules, it can be achieved that the REG bundles in the first time domain to the REG bundles in the sixth time domain are numbered in sequence.

numbering the REG bundles on the time domain starting at first in the first control resource set from high to low in sequence according to the frequency domain; and numbering each REG bundle on the next time domain of the first control resource set from high to low in sequence according to the time domain sequence of the first control resource set until all REG bundles of the first control resource set are numbered.

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

the network equipment maps the plurality of REG bundles from CCE to REG according to the mapping rule of the second pre-configuration mode, the mapping rule of the third pre-configuration mode, the numbers of the plurality of REG bundles and the CCE size of the control channel element;

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 invention, in order to avoid the influence on the PDCCH performance transmitted on the control resource set, the control resource set with larger time domain length can be configured. If a larger time domain length of the control resource set is configured, a TDM REG bundle may occur within the control resource set. When the TDM REG bundle occurs in the control resource set, the REG bundle in the control resource set can be processed according to the scheme of the embodiment of the present invention. Therefore, the REG bundle of the TDM can appear in the control resource set of the embodiment of the present invention, so that the control resource set with a larger time domain length can be configured.

Optionally, in one or more embodiments of the present invention, the mapping rule of the time domain interleaving pattern is related to at least one of: the method comprises the steps of controlling the number of REG bundles of TDM in a first control resource set, configuring or predefining time domain interleaving size, pre-configuring or predefining the number of REG bundles contained in each CCE in a time domain, and pre-configuring or predefining the number of REG bundles contained in each CCE in a frequency domain;

the mapping rule of the frequency domain interleaving pattern is related to at least one of: the method comprises the steps of controlling the number of REG bundles of TDM in a first control resource set, configuring or predefining frequency domain interleaving size, pre-configuring or predefining the number of REG bundles contained in each CCE in a time domain, and pre-configuring or predefining the number of REG bundles contained in each CCE in a frequency domain;

the mapping rule of the time domain non-interleaved mode is related to at least one of: the method comprises the steps of controlling the number of REG bundles of TDM in a time division multiplexing mode in a first control resource set, pre-configuring or pre-defining the number of REG bundles contained in each CCE on a time domain, and pre-configuring or pre-defining the number of REG bundles contained in each CCE on a frequency domain;

the mapping rule of the frequency domain non-interleaved mode is related to at least one of: the number of REG bundles for time division multiplexing TDM in the first control resource set, the number of REG bundles contained in each CCE in a time domain, which is pre-configured or predefined, and the number of REG bundles contained in each CCE in a frequency domain, which is pre-configured or predefined.

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

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

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

Wherein the REG bundle size is related to the number of symbols of the first set of control resources (i.e., the time domain length of the first set of control resources).

The embodiment of the invention can obtain the REG bundle size according to the number of the symbols of 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, and the occurrence of TDM CCEs in the first control resource set can be further avoided. Therefore, the embodiment of the invention can configure the control resource set with larger time domain length.

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

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

The embodiment of the invention can obtain the size of the CCE according to the number of the symbols of the control resource set. Therefore, even if a control resource set of a larger time domain length is configured, the appearance of the CCEs of TDM within the control resource set can be avoided. Therefore, the embodiment of the invention can configure the control resource set with larger time domain length.

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

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

The embodiment of the invention can divide the second control resource set configured with larger time domain length into a plurality of first control resource sets, thereby avoiding the occurrence of TDM REG bundles in the first control resource sets. Therefore, the embodiment of the invention can configure the control resource set with larger time domain length.

Optionally, in one or more embodiments of the present invention, the REG numbering rules of the first control resource sets are: for each first set of control resources, the REGs for the first set of control resources are numbered beginning with the first subscription number.

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

Optionally, in one or more embodiments of the present invention, the numbering rule of REG bundles of the plurality of first control resource sets is: for each first set of controlling resources, the REG bundles for the first set of controlling resources are numbered beginning with the second subscription number.

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

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

the network device divides the second control resource set into a plurality of first control resource sets according to the configuration information of the second control resource set, and the method comprises the following steps:

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

the network device divides 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 one first control resource set.

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

and determining candidate Physical Downlink Control Channels (PDCCH) according to the number of CCEs of a plurality of first control resource sets, wherein the number of any two CCEs in the plurality of first control resource sets is different.

Optionally, in one or more embodiments of the present invention, the numbering rule of CCEs of the plurality of first control resource sets includes:

and a numbering step is executed: numbering jth CCEs in the plurality of first control resource sets in sequence according to the sequence of the plurality of first control resource sets;

after numbering the jth CCE in the last first control resource set, taking the number of the jth CCE in the last first control resource set as the starting point of the next numbering, wherein j = j +1, and returning to perform the numbering step until numbering is completed on all CCEs in a plurality of first control resource sets; j is from [1,a ]; a denotes the number of CCEs of one first control resource set.

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

The result of CCE numbering for Sub-coreset 0 to Sub-coreset 5 is 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}

As can be seen, the number of the first CCE of Sub-coreset 0 is 0, the number of the first CCE of Sub-coreset 1 is 1, the number of the first CCE of Sub-coreset 2 is 2 … Sub-coreset 5 is 5.

The second CCE of Sub-coreset 0 is numbered 6, the second CCE of Sub-coreset 1 is numbered 7, the second CCE of Sub-coreset 2 is numbered 8 … Sub-coreset 5 is numbered 11. And so on, get the number of each CCE of each Sub-coreset 0.

The embodiment of the invention numbers the CCEs of the plurality of first control resource sets according to the mode, so that the same candidate PDCCH can come from different first control resource sets, and the CCEs with adjacent numbers are far apart, thereby improving the PDCCH performance transmitted on the first control resource sets.

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

the network equipment combines at least one CCE of the first control resource set to obtain at least one CCE group, wherein one CCE group comprises at least one CCE;

and mapping the PDCCH to the CCE group of at least one CCE group to obtain a candidate physical downlink control channel PDCCH.

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

The invention provides a method for determining a physical downlink control channel applied to user equipment, which comprises the following steps:

the user equipment maps a plurality of resource element group REG bundles from CCE to REG according to the number of the resource element group REG bundles and the size of a control channel element CCE of a first control resource set to obtain at least one CCE of the first control resource set, wherein one CCE comprises at least one resource element group REG bundle, and one resource element group REG bundle comprises at least one REG;

and the user equipment determines a candidate Physical Downlink Control Channel (PDCCH) of the first control resource set according to the at least one CCE.

In the embodiment of the invention, the user equipment numbers the REG bundle of the first control resource set, and the CCE-to-REG mapping is carried out according to the number of the REG bundle and the size of the CCE to obtain at least one CCE of the first control resource set, thereby determining the PDCCH candidate of the first control resource set. Therefore, the PDCCH candidates may be determined according to the above scheme, so that a control resource set of a larger time domain length may be configured.

Optionally, in one or more embodiments of the present invention, the performing, by the user equipment, CCE to REG mapping 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 includes:

the user equipment maps the CCE to the REG for the resource element group REG bundles according to the mapping rule of the first pre-configuration mode, the number of the resource element group REG bundles and the size of the control channel element CCE;

the uniform interleaving mode is a CCE-to-REG mapping mode for interleaving the serial numbers of the REG bundles of the plurality of resource element groups; the uniform non-interleaved pattern is a CCE to REG mapping pattern in which the numbers of the plurality of resource element group REG bundles are non-interleaved.

Optionally, in one or more embodiments of the present invention, the mapping rule of the unified interleaving mode is related to at least one of the following: the method comprises the steps of controlling the number of REG bundles of time division multiplexing TDM in a first control resource set, pre-configuring or pre-defining uniform interleaving size, pre-configuring or pre-defining the number of REG bundles contained in each CCE in a time domain, and pre-configuring or pre-defining the number of REG bundles contained in each CCE in a frequency domain;

the mapping rules for the unified non-interleaved mode are related to at least one of: the method comprises the steps of controlling the number of REG bundles of TDM in a resource set by a first control method, pre-configuring or pre-defining the number of REG bundles contained in each CCE in a time domain, and pre-configuring or pre-defining the number of REG bundles contained in each CCE in a frequency domain;

the mapping rules for the time-domain interleaving pattern are related to one or more of the following factors: the method comprises the steps of controlling the number of REG bundles of TDM in a first control resource set, configuring or predefining time domain interleaving size in advance, configuring or predefining the number of REG bundles contained in each CCE in a time domain in advance, and configuring or predefining the number of REG bundles contained in each CCE in a frequency domain in advance;

Optionally, in one or more embodiments of the present invention, the numbering rule of the multiple resource element group REG bundles is:

numbering resource unit group REG bundles on the lowest frequency domain in a first control resource set in sequence according to the time domain sequence; numbering each resource unit group REG bundle on the next frequency domain of the first control resource set according to the sequence of the frequency domains of the first control resource set from low to high in sequence according to the time domain sequence until all resource unit group REG bundles of the first control resource set are numbered;

or,

numbering resource unit group REG bundles on the highest frequency domain in a first control resource set in sequence according to time domain sequence; numbering each resource unit group REG bundle on the next frequency domain of the first control resource set in sequence from high to low according to the sequence of the frequency domains of the first control resource set until all resource unit group REG bundles of the first control resource set are numbered;

or,

numbering resource unit group REG bundles on a time domain which starts at first in a first control resource set in sequence from low to high in a frequency domain; according to the time domain sequence of the first control resource set, numbering each resource unit group REG bundle on the next time domain of the first control resource set from low to high in sequence according to the frequency domain until all resource unit group REG bundles of the first control resource set are numbered;

numbering resource unit group REG bundles on a time domain which starts at first in a first control resource set from high to low in sequence according to a frequency domain; and numbering the resource unit group REG bundles in the next time domain of the first control resource set from high to low in sequence according to the time domain sequence of the first control resource set until all the resource unit group REG bundles of the first control resource set are numbered.

the user equipment maps the CCE to the REG of the resource element 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 resource element group REG bundles and the size of the control channel element CCE;

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

Optionally, in one or more embodiments of the present invention, before the ue performs CCE to REG mapping on multiple resource element group REG bundles according to the numbers of the multiple resource element group REG bundles of the first control resource set and the CCE size of a control channel element, the method for determining a physical downlink control channel further includes:

the user equipment determines a plurality of resource element group REG bundles according to the size of the REG bundles and the REGs of the first control resource set;

wherein the REG bundle size is related to the number of symbols of the first set of control resources.

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

and the user equipment divides the second control resource set into a plurality of first control resource sets according to the configuration information of the second control resource set.

the user equipment divides the second control resource set into a plurality of first control resource sets according to the configuration information of the second control resource set, and the method comprises the following steps:

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

the user equipment divides 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 one first control resource set.

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

and the user equipment determines a candidate Physical Downlink Control Channel (PDCCH) according to the number of the CCE of the plurality of first control resource sets.

Wherein any two CCEs in the plurality of first control resource sets have different numbers.

the user equipment performs the numbering step: numbering jth CCEs in the plurality of first control resource sets in sequence according to the sequence of the plurality of first control resource sets;

after numbering the jth CCE in the last first control resource set, the user equipment takes the number of the jth CCE in the last first control resource set as the starting point of the next numbering, j = j +1, and returns to execute the numbering step until numbering is finished on all CCEs in a plurality of first control resource sets; j is from [1,a ]; a denotes the number of CCEs of one first control resource set.

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

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

Since the method for determining the physical downlink control channel applied to the network device is similar to the method for determining the physical downlink control channel applied to the user equipment, and the method for determining the physical downlink control channel applied to the network device has been described in detail above, the related contents of the method for determining the physical downlink control channel applied to the user equipment are not repeated herein.

The following examples further illustrate the invention by means of four examples.

Example one

Fig. 4 is a flowchart illustrating a method for determining a physical downlink control channel according to another embodiment of the present invention. As shown in fig. 4, the method for determining a physical downlink control channel includes:

in step 301, the network device numbers the REG of Coreset.

Alternatively, the REGs within Coreset may be numbered on a time domain first, frequency domain low to high basis. For example, numbering REGs within Coreset is shown in FIG. 3.

Step 302, the network device configures or pre-defines a REG bundle size L according to the number of Coreset REGs, and combines the Coreset REGs to form a plurality of Coreset REG bundles, wherein one REG bundle comprises L REGs; the REG bundle size L may be configured separately by time and/or frequency domains.

In step 303, the network device numbers multiple REG bundles for Coreset, where one REG bundle has one number.

In step 303, the network device may uniformly number the REG bundles according to a frequency domain first and then a time domain, or a time domain first and then a frequency domain. The method comprises the following specific steps:

step 303 comprises: the network equipment numbers the REG bundles on the lowest frequency domain in the Coreset in sequence according to the time domain; the REG bundles in the next frequency domain of Coreset are numbered sequentially in time domain order, in the order from the lower to the higher of the frequency domain of Coreset, until all REG bundles of Coreset are numbered.

Alternatively, step 303 comprises: the network equipment numbers the REG bundles on the highest frequency domain in the Coreset in sequence according to the time domain; the REG bundles in the next frequency domain of Coreset are numbered sequentially in time domain order from high to low in the frequency domain of Coreset until all REG bundles of Coreset are numbered.

Alternatively, step 303 comprises: the network equipment numbers the REG bundles on the time domain which is started at first in Coreset in sequence from low to high in frequency domain; and numbering each REG bundle on the next time domain of the Coreset from low to high in sequence according to the time domain sequence of the Coreset until all REG bundles of the Coreset are numbered.

Alternatively, step 303 comprises: the network equipment numbers the REG bundles on the time domain which is started at first in Coreset in sequence from high to low in the frequency domain; the REG bundles in the next time domain of Coreset are numbered sequentially from high to low in the frequency domain in time domain order of Coreset until all REG bundles of Coreset are numbered.

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

Wherein the first preconfigured mode is one of: the time domain interleaving mode and the frequency domain interleaving mode are the same, and the time domain interleaving mode and the frequency domain interleaving mode are the same.

In step 305, the network device determines PDCCH candidates according to at least one CCE of Coreset. Thus, the network device carries the DCI by using one of the candidate PDCCHs and transmits the DCI.

It can be seen that the embodiments of the present invention consider the TDM REG bundles within Coreset for CCE to REG mapping. And mapping the REG bundle contained in each CCE and the uniform REG bundle number according to a specific uniform interleaving (or mapping) function/predefined rule, wherein the interleaving (or mapping) functions/predefined rules configured in different modes are different.

■ Configurable in one of the following modes:

unified interleaving mode

Unified non-interleaved mode

Time-domain interleaved mode + frequency-domain non-interleaved mode

Time domain non-interleaved mode + frequency domain non-interleaved mode

Time-domain interleaving mode + frequency-domain interleaving mode

Time-domain non-interleaved mode + frequency-domain interleaved mode

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

REG bundle number of TDM

Configuration or predefined uniform interleaving size

Configuration or predefined time-domain interleaving size

Configured or predefined frequency domain interleaving size

Configuring or predefining REG bundle number contained in each CCE time domain

Configuring or predefining the number of REG bundle contained in each CCE frequency domain

In the embodiment of the present invention, optionally, in step 305, PDCCH-to-CCE mapping is performed in consideration of the CCEs of TDM. For example, a CCE group mapping is performed on a CCE group including a plurality of CCEs.

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

The duration of the Coreset time domain (in symbols) is configured to be

Wherein it is present>

May be configured as 6 or 12. The frequency domain width of Coreset (in PRB units) is configured as @>

And the parameters are defined as follows:

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

REG bundle: combination of L REGs

Control-channel element (CCE): contains M REGs (e.g., protocol fixed to 6) and maps according to the CCE-to-REG mapping rule described below.

the REGs are first numbered from front to back in the time domain first, and from low to high in the frequency domain later. Specifically, from the lowest frequency domain of Coreset, the REGs in the same frequency domain in Coreset are numbered sequentially according to the time domain sequence, and the REGs in the next frequency domain of Coreset are numbered sequentially according to the time domain sequence from the low frequency domain of Coreset to the high frequency domain of Coreset until all the REGs in Coreset are numbered.

For example, if

The numbering of REGs is as shown in fig. 3 below.

The ith REG bundle contains REG { i × L, i × L +1, …, i × L + L-1}, i =0,1, …, N _Coreset L-1, wherein N _Coreset The number of REGs configured for Coreset;

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

● And obtaining the REG bundle number contained in the jth CCE according to different configured modes and interleaving functions, and assuming that the size of the time domain REG bundle contained in one CCE is predefined as 1:

■ When configured in time-domain non-interleaved and frequency-domain non-interleaved 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 of 3) and frequency domain non-interleaving modes

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

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

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

◆…

The foregoing is a method for determining a physical downlink control channel applied to a network device, and 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 comprises the following steps:

the user equipment numbers the REG of Coreset.

The user equipment combines the REGs of Coreset according to the number of the REGs of Coreset, the configuration or the predefined REG bundle size L to form a plurality of REG bundles of Coreset, wherein one REG bundle comprises L REGs; the REG bundle size L may be separately configured by the time domain and/or the frequency domain.

The user equipment numbers multiple REG bundles of Coreset, where one REG bundle has one number. The user equipment may uniformly number the REG bundles according to a frequency domain first and then a time domain, or a time domain first and then a frequency domain.

And the user equipment maps the REG bundle of the Coreset from CCE to REG according to the mapping rule of the first pre-configuration mode, the number of the REG bundle of the Coreset and the configuration or the predefined CCE size to obtain at least one CCE of the Coreset. The mapping rules of the first preconfigured pattern may comprise an interleaving function (or mapping function) and predefined rules other than an interleaving function (or mapping function). Wherein the first preconfigured mode is one of: the method comprises the following steps of a unified interleaving mode, a unified non-interleaving mode, a time domain interleaving mode and a frequency domain non-interleaving mode, a time domain non-interleaving mode and a frequency domain non-interleaving mode, a time domain interleaving mode and a frequency domain interleaving mode, and a time domain non-interleaving mode and a frequency domain interleaving mode.

The user equipment determines the PDCCH candidate according to at least one CCE of Coreset. Thus, the user equipment may monitor the determined candidate PDCCHs to receive 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 equipment, the method for determining the physical downlink control channel applied to the network equipment has been described in detail in this embodiment. Therefore, the related contents of the determination method applied to the physical downlink control channel of the user equipment are not repeated herein.

Example two

Fig. 5 is a flowchart illustrating a method for determining a physical downlink control channel according to another embodiment of the present invention. As shown in fig. 5, the method for determining a physical downlink control channel includes:

in step 401, the network device numbers the REG of Coreset.

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

Step 402, the network device combines the Coreset REGs according to the Coreset REG number, configuration or predefined REG bundle size L to form Coreset REG bundles, one REG bundle comprising L REGs; the REG bundle size L may be configured separately by time and/or frequency domains.

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

In step 404, the network device performs CCE to REG mapping on the Coreset REG bundle according to the mapping rule of the second preconfigured pattern, the mapping rule of the third preconfigured pattern, the time domain number and the frequency domain number of the Coreset REG bundle, and the configured or predefined CCE size, to obtain at least one CCE of Coreset.

In step 405, the network device determines PDCCH candidates according to at least one CCE of Coreset. Thus, the network device carries the DCI by using one of the candidate PDCCHs and transmits the DCI.

It can be seen that the embodiments of the present invention consider the TDM REG bundles within Coreset for CCE to REG mapping. In the embodiment of the invention, the REG bundle is respectively subjected to time domain numbering and frequency domain numbering, and is respectively subjected to time domain interleaving and frequency domain interleaving configuration. Mapping the time domain numbers and the frequency domain numbers of the REG beams and the REG beams contained in each CCE according to a time domain interleaving (or mapping) function/predefined rule and a frequency domain interleaving (or mapping) function/predefined rule respectively, wherein the time domain interleaving (or mapping) functions/predefined rules of a time domain non-interleaving mode and a time domain interleaving mode are different, and the frequency domain interleaving (or mapping) functions/predefined rules of the frequency domain non-interleaving mode and the frequency domain interleaving mode are different.

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

The elements are related:

TDM number of REG bundles

Configured or predefined time domain interleaving size

Configured or predefined frequency domain interleaving size

Configured or predefined number of REG bundles contained per CCE time domain

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

In the embodiment of the present invention, optionally, in step 405, PDCCH-to-CCE mapping is performed in consideration of CCEs of TDM. For example, a CCE combination including a plurality of CCEs is subjected to PDCCH-to-CCE group mapping.

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

The duration of the Coreset time domain (in symbols) is configured to be

Wherein it is present>

And the parameters are defined as follows:

REG bundle: combination of L REGs

● Control-channel element (CCE): contains M REGs (e.g., protocol fixed to 6) and maps according to the CCE-to-REG mapping rule described below.

● The REGs are first numbered according to the principle that the time domain is from front to back and the frequency domain is from low to high. Specifically, from the lowest frequency domain of Coreset, the REGs in the same frequency domain in Coreset are numbered sequentially according to the time domain sequence, and the REGs in the next frequency domain of Coreset are numbered sequentially according to the time domain sequence from the low frequency domain to the high frequency domain of Coreset until all the REGs in Coreset are numbered.

For example, if

The numbering of REGs is as shown in fig. 2 below.

● (ii) th _t ,i _f ) Each REG bundle contains REG

Wherein N is _Coreset Number of REGs configured for Coreset, i _t Time domain number, i, of REG bundle _f Numbering frequency domains of REG bundle;

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

● And obtaining the time domain number and the frequency domain number of the REG bundle contained in the jth CCE according to different configured modes and interleaving functions, and assuming that the size of the time domain REG bundle contained in one CCE is predefined as 3:

■ When configured in a 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 in a time-domain interleaving (interleaving size of 3) mode

◆CCE 0->REG bundle{0,2,4}

◆CCE 1->REG bundle{1,3,5}

◆CCE 2->REG bundle{0,2,4}

◆…

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

The user equipment combines the REGs of Coreset according to the number of the REGs of Coreset, the configuration or the predefined REG bundle size L to form a plurality of REG bundles of Coreset, wherein one REG bundle comprises L REGs; the REG bundle size L may be configured separately by time and/or frequency domains.

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

And the user equipment performs CCE-to-REG mapping on the REG bundle of the Coreset according to the mapping rule of the second pre-configured mode, the mapping rule of the third pre-configured mode, the time domain number and the frequency domain number of the REG bundle of the Coreset and the configured or predefined CCE size to obtain at least one CCE of the Coreset. The 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.

EXAMPLE III

Fig. 6 is a flowchart illustrating a method for determining a physical downlink control channel according to still another embodiment of the present invention. As shown in fig. 6, the method for determining a physical downlink control channel includes:

in step 501, the network device numbers the REG of Coreset.

For example, the network device numbers REGs in 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.

In step 503, the network device combines the Coreset's REGs to form multiple REG bundles according to the Coreset's REG number and REG bundle size.

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

At step 504, the network device numbers multiple REG bundles for Coreset.

In step 505, the network device performs CCE to REG mapping on the plurality of REG bundles of Coreset according to the number of the plurality of REG bundles of Coreset and the CCE size to obtain at least one CCE of Coreset.

However, when the CCE size is determined in step 502, the CCE size is determined in step 502. In case no CCE size is determined in step 502, the CCE size may be predefined or configured.

In step 506, the network device determines PDCCH candidates according to at least one CCE of Coreset. Thus, the network device carries the DCI by using one of the candidate PDCCHs and transmits the DCI.

In the embodiment of the present invention, optionally, in step 506, PDCCH-to-CCE mapping is performed in consideration of the CCEs of TDM. For example, a CCE group mapping is performed on a CCE group including a plurality of CCEs.

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

The duration of the Coreset time domain (in symbols) is configured to be

(configurable as 1,2,3,6, 12), frequency domain width (in PRB units) is configured as->

When configured in a non-interleaved modeIn the formula,

when

When the size of REG bundle is 6, the size of CCE is 6;

when

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

when configured in the interleaved mode, the bit lines,

when

When the size of REG bundle is configured to be 2 or 6, CCE size is 6; when

Either 3 or 6, REG bundle size may be configured to ≧ be>

Or 6,CCE size of 6;

when

When, the REG bundle size may be configured to be 12, the cce size is 12.

the user equipment numbers the REG of Coreset. For example, the network device numbers REGs in 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 the CCE size according to the number of Coreset symbols.

The user equipment combines the Coreset's REGs according to their numbers and REG bundle sizes to form multiple REG bundles. Wherein, in case of determining the REG bundle size, the REG bundle size is determined by the user equipment. In the case where the REG bundle size is not determined, the REG bundle size may be predefined or configured.

The user equipment numbers multiple REG bundles for Coreset.

And the user equipment maps CCE to REG for the plurality of REG bundles of the Coreset according to the number and the CCE size of the plurality of REG bundles of the Coreset to obtain at least one CCE of the Coreset. Wherein, when determining the CCE size, the CCE size is determined. The CCE size may be predefined or configured without determining the CCE size.

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

Example four

Fig. 7 is a flowchart illustrating a method for determining a physical downlink control channel according to still another embodiment of the present invention. As shown in fig. 7, the method for determining a physical downlink control channel includes:

in step 601, the network device divides Coreset into a plurality of Sub-coresets. Coreset may be the second set of control resources described above and Sub-Coreset may be the first set of control resources described above.

Wherein the number of symbols of one Sub-coreset can be predefined or configured. The number of symbols of Sub-Coreset may be related to the number of symbols of Coreset.

The total number of Sub-coreset may be predefined or configured. The total number of Sub-Coreset may be related to the number of symbols of Coreset.

In step 602, the network device numbers REGs for a plurality of Sub-coresets.

Alternatively, the REGs within each Sub-coreset may be numbered on a time-domain first, frequency-domain low-to-high basis. Specifically, for Sub-coreset 0 to Sub-coreset 5, the REGs within Sub-coreset 0 are numbered according to the time domain first, frequency domain from low to high principle, and 10 REGs of Sub-coreset 0 are numbered as REG0 to REG9. Similarly, 10 REGs of Sub-coreset 1 are numbered REG0 to REG9, …, and 10 REGs of Sub-coreset 5 are numbered REG0 to REG9.

Step 603, the network device performs for each Sub-coreset: the REGs of Sub-coreset are combined according to the number of REGs of Sub-coreset and the REG bundle size to form a plurality of REG bundles of Sub-coreset.

In step 604, the network device numbers REG bundles for a plurality of Sub-coresets.

Alternatively, the REGs within each Sub-coreset may be numbered on a time-domain first, frequency-domain low-to-high basis. Alternatively, the REGs within 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 within Sub-coreset 0 are numbered according to the time domain first, frequency domain from low to high principle, and the 5 REG bundles of Sub-coreset 0 are numbered as REG0 to REG4. Similarly, 5 REG bundles of Sub-coreset 1 are numbered REG0 to REG4, …, and 5 REG bundles of Sub-coreset 5 are numbered REG0 to REG4.

Step 605, for each Sub-core, the network device performs CCE to REG mapping on the REG bundle of the Sub-core according to the number of the REG bundle of the Sub-core and the CCE size, to obtain at least one CCE of the Sub-core. Namely, CCE-to-REG mapping is performed within each sub-core according to the REG bundle.

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

In step 607, the network device determines PDCCH candidates according to the numbers of the CCEs of the Sub-coreset. Thus, the network device carries the DCI by using one of the candidate PDCCHs and transmits the DCI.

In the embodiment of the present invention, optionally, in step 607, PDCCH-to-CCE mapping is performed in consideration of the CCEs of TDM. For example, a CCE group mapping is performed on a CCE group including a plurality of CCEs.

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

The duration of Coreset is configured in time domain (in symbols)

Wherein it is present>

Meanwhile, the symbol length of the configured Sub-Coreset is 2, and the Coreset configured with the symbol number of 12 comprises 6 Sub-coresets in total. For each Sub-coreset, CCE-to-REG mapping is performed in a legacy (legacy) manner, as follows:

the REGs are first numbered from front to back in the time domain first, and from low to high in the frequency domain later. After numbering the REGs of 6 Sub-coreset, combining the REGs of each Sub-coreset to obtain an REG bundle of each Sub-coreset;

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

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

and

for/>

And the interleaving function is

x＝cR+r

r＝0,1,…,R-1

c＝0,1,…,C-1

Where R is the interleave size, R can be configured as 2,3 or 6, and N _Coreset V (L R) is an integer; n is _shift E {0,1, …,274} can be configured by the high layer parameter shiftIndex, otherwise

Mapping of each CCE is obtained through the steps, each Sub-core has a corresponding CCE number, namely each CCE can be obtained through a Sub-core number s and a CCE number c in the Sub-core, and finally the CCEs of the 6 Sub-cores are numbered according to the sequence of the 6 Sub-cores, namely the CCE number corresponding to (s, c) is j = c N _s + s, wherein N _s The number of sub-coreset.

For example, assume there are 6 Sub-coresets, each having 8 CCEs, for a total of 48 CCEs. Then

■ 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 CCEs {5, 11, 17, 23, 29, 35, 41, 47}

CCEs within one Sub-coreset are configured according to the CCE-REG mapping mode of legacy and the REG-Bundling definition of Rel-15.

the user equipment divides the Coreset into a plurality of Sub-coresets.

The user equipment numbers REGs for a plurality of Sub-coresets. Alternatively, the REGs within each Sub-coreset may be numbered on a time-domain first, frequency-domain low-to-high basis.

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

The user equipment numbers REG bundles for a plurality of Sub-coresets. Alternatively, the REGs within each Sub-coreset may be numbered on a time-domain first, frequency-domain low-to-high basis. Alternatively, the REGs within each Sub-coreset are numbered according to the principle of frequency domain first and time domain from low to high.

And for each Sub-coreset, the user equipment maps the CCE to the REG of the Sub-coreset according to the number and the CCE size of the REG bundle of the Sub-coreset to obtain at least one CCE of the Sub-coreset. Namely, CCE-to-REG mapping is performed within each sub-core according to the REG bundle.

And the user equipment numbers CCEs of the Sub-coreset uniformly according to the sequence of the Sub-coreset.

And the user equipment determines the PDCCH candidates according to the serial numbers of the CCEs of the plurality of Sub-coresets. Thus, the user equipment may monitor the determined candidate PDCCHs to receive DCI carried by one of the candidate PDCCHs.

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

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

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

In the embodiment of the invention, the REG bundle of the first control resource set is numbered, and mapping from CCE to REG is carried out according to the number of the REG bundle and the size of the CCE to obtain at least one CCE of the first control resource set, thereby determining the PDCCH candidate of the first control resource set. Therefore, the candidate PDCCH may be determined according to the above scheme, so that a control resource set of a larger time domain length may be configured. The determining device of the physical downlink control channel can be applied to user equipment or network equipment.

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

mapping CCE to REG is carried out on the resource element group REG bundles according to the mapping rule of the first pre-configuration mode, the number of the resource element group REG bundles and the size of a control channel element CCE;

or,

mapping CCE to REG is carried out on the resource element 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 resource element group REG bundles and the size of the control channel element CCE;

the mapping rule of the frequency domain interleaving pattern is related to at least one of: the method comprises the steps of controlling the number of REG bundles of TDM in a first control resource set, configuring or predefining frequency domain interleaving size, pre-configuring or predefining the number of REG bundles contained in each CCE on a time domain, and pre-configuring or predefining the number of REG bundles contained in each CCE on a frequency domain;

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

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

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

and the dividing module is used for dividing the second control resource set into a plurality of first control resource sets according to the configuration information of the second control resource set.

the dividing module comprises:

the information determining module is used for determining the total number of the first control resource sets into which the second control resource set is to be divided and/or the number of symbols of one first control resource set according to the number of symbols of the second control resource set;

and the control resource set dividing module is used for dividing 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 one first control resource set.

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

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

the CCE combination module is used for combining at least one CCE of the first control resource set to obtain at least one CCE group, wherein one CCE group comprises at least one CCE;

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

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

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

The processor 810 is configured to perform CCE-to-REG mapping on multiple resource element group REG bundles according to the numbers 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, where one CCE includes at least one resource element group REG bundle and one resource element group REG bundle includes at least one REG; and determining candidate Physical Downlink Control Channels (PDCCH) of the first control resource set according to at least one CCE.

Specifically, the processor 801 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured as one or more Integrated circuits implementing embodiments of the present invention.

Memory 802 may include mass storage for data or instructions. By way of example, and not limitation, memory 802 may include a Hard Disk Drive (HDD), a floppy Disk Drive, flash memory, an optical Disk, a magneto-optical Disk, a tape, or a Universal Serial Bus (USB) Drive or a combination of two or more of these. Memory 802 may include removable or non-removable (or fixed) media, where appropriate. The memory 802 may be internal or external to the integrated gateway disaster recovery device, where appropriate. 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 may be mask-programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically Erasable PROM (EEPROM), electrically Alterable 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 the method for determining the physical downlink control channel in any of the above embodiments.

In one example, the network device may also include a communication interface 803 and a bus 810. As shown in fig. 9, the processor 801, the memory 802, and the communication interface 803 are connected via a bus 810 to complete communication therebetween.

The communication interface 803 is mainly used for implementing communication between various modules, apparatuses, units and/or devices in the embodiment of the present invention.

Bus 810 includes hardware, software, or both to couple the components of the network device to each other. By way of example, and not limitation, a bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hypertransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus or a combination of two or more of these. Bus 810 may include one or more buses, where appropriate. Although specific buses have been described and illustrated with respect to embodiments of the invention, any suitable buses or interconnects are contemplated by the invention.

The network device may execute the method for determining the physical downlink control channel in the embodiment of the present invention, so as to implement the method and the apparatus for determining the physical downlink control channel described in conjunction with fig. 1 to fig. 7.

The embodiment of the present invention further provides a network device, which includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, implements each process of the above-mentioned method for determining a physical downlink control channel, and can achieve the same technical effect, and is not described herein again to avoid repetition.

Fig. 10 shows a schematic hardware structure diagram of a user equipment according to an embodiment of the present invention, where the user equipment 900 includes, but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, a processor 910, and a power supply 911. Those skilled in the art will appreciate that the user equipment configuration shown in fig. 10 does not constitute a limitation of the user equipment, which may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the user equipment includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The processor 910 is configured to perform mapping from CCE to REG on a plurality of resource element group REG bundles according to numbers of the resource element group REG bundles of a first control resource set and a control channel element CCE size, to obtain at least one CCE of the first control resource set, where one CCE includes at least one resource element group REG bundle and one resource element group REG bundle includes at least one REG; and determining candidate Physical Downlink Control Channels (PDCCH) of the first control resource set according to at least one CCE.

The embodiment of the invention numbers the REG bundle of the first control resource set, and maps CCE to REG according to the number of the REG bundle and the size of the CCE to obtain at least one CCE of the first control resource set, thereby determining the candidate PDCCH of the first control resource set. Therefore, the candidate PDCCH may be determined according to the above scheme, so that a control resource set of a larger time domain length may be configured.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 901 may be used for receiving and sending signals during information transceiving or a call, and specifically, after receiving downlink data from a base station, the downlink data is processed by the processor 910; in addition, the uplink data is transmitted 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 a network and other devices through a wireless communication system.

The user device provides wireless broadband internet access to the user via the network module 902, such as assisting the user in sending and receiving e-mails, browsing web pages, and accessing streaming media.

The audio output unit 903 may convert audio data received by the radio frequency unit 901 or the network module 902 or stored in the memory 909 into an audio signal and output as sound. Also, the audio output unit 903 may also provide audio output related to a specific function performed by the user equipment 900 (e.g., a call signal reception sound, a 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, and the Graphics processor 9041 processes image data of a still picture or video obtained by an image capturing device (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 906. The image frames processed by the graphic processor 9041 may be stored in the memory 909 (or other storage medium) or transmitted via the radio frequency unit 901 or the network module 902. The microphone 9042 can receive sounds and can process such sounds into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 901 in case of the phone call mode.

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

The display unit 906 is used to display information input by the user or information provided to the user. The Display unit 906 may include a Display panel 9061, and the Display panel 9061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 907 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the user device. Specifically, the user input unit 907 includes a touch panel 9071 and other input devices 9072. The touch panel 9071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 9071 (e.g., operations by a user on or near the touch panel 9071 using a finger, a stylus, or any other suitable object or accessory). The touch panel 9071 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 910, receives a command from the processor 910, and executes the command. In addition, the touch panel 9071 may be implemented by using various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 907 may include other input devices 9072 in addition to the touch panel 9071. Specifically, the other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control key, a switch key, and the like), a track ball, a mouse, and a joystick, which are not described herein again.

Further, the touch panel 9071 may be overlaid on the display panel 9061, and when the touch panel 9071 detects a touch operation on or near the touch panel 9071, the touch panel is transmitted to the processor 910 to determine the type of the touch event, and then the processor 910 provides a corresponding visual output on the display panel 9061 according to the type of the touch event. Although in fig. 10, the touch panel 9071 and the display panel 9061 are implemented 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 may be integrated to implement the input and output functions of the user equipment, which is not limited herein.

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

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

The processor 910 is a control center of the user equipment, connects various parts of the entire user equipment using various interfaces and lines, and performs various functions of the user equipment and processes data by running or executing software programs and/or modules stored in the memory 909 and calling data stored in the memory 909, thereby performing overall monitoring of the user equipment. Processor 910 may include one or more processing units; preferably, the processor 910 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It is to be appreciated that the modem processor described above may not be integrated into processor 910.

The user device 900 may further include a power supply 911 (e.g., a battery) for supplying power to various components, and preferably, the power supply 911 may be logically connected to the processor 910 through a power management system, so as to manage charging, discharging, and power consumption management functions through the power management system.

In addition, the user equipment 900 includes some functional modules that are not shown, and are not described in detail herein.

An embodiment of the present invention further provides a user equipment, which includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, implements each process of the above-mentioned method for determining a physical downlink control channel, and can achieve the same technical effect, and is not described herein again to avoid repetition.

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above-mentioned method for determining a physical downlink control channel, and can achieve the same technical effect, and in order to avoid repetition, the details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

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

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

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

Claims

1. A method for determining a Physical Downlink Control Channel (PDCCH) is characterized by comprising the following steps:

determining a candidate Physical Downlink Control Channel (PDCCH) of the first control resource set according to the at least one CCE;

before the mapping from 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 method further includes:

determining the plurality of resource element group REG bundles according to the REG bundle size and the REGs of the first control resource set;

wherein the REG bundle size is related to the number of symbols of the first control resource set, and the REG bundle size is further configured according to a time domain and/or a frequency domain.

2. The method of claim 1, wherein the CCE to REG mapping of the plurality of resource element group, REG, bundles according to the number of the plurality of REG bundles of the first control resource set and a control channel element, CCE, size comprises:

according to the mapping rule of a first pre-configuration mode, the number of the resource element group REG bundles and the CCE size of the control channel element, carrying out CCE-to-REG mapping on the resource element group REG bundles;

wherein the first preconfigured mode is one of: a unified interleaving mode, a unified non-interleaving mode, a time domain interleaving mode and a frequency domain non-interleaving mode, a time domain non-interleaving mode and a frequency domain non-interleaving mode, a time domain interleaving mode and a frequency domain interleaving mode, a time domain non-interleaving mode and a frequency domain interleaving mode;

the uniform interleaving mode is a CCE-to-REG mapping mode for interleaving the serial numbers of the resource element group REG bundles; the uniform non-interleaved pattern is a CCE-to-REG mapping pattern in which numbers of the plurality of resource element group REG bundles are non-interleaved.

3. The method of claim 2,

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

the mapping rule of the unified non-interleaved mode is related to at least one of: the number of the REG bundles of the TDM in the first control resource set, the number of the REG bundles contained in each CCE on a time domain which is pre-configured or predefined, and the number of the REG bundles contained in each CCE on a frequency domain which is pre-configured or predefined;

the mapping rule of the time domain interleaving pattern is related to one or more of the following factors: the method comprises the steps of pre-configuring or pre-defining the time domain interleaving size, the pre-configuring or pre-defining the number of REG bundles contained in each CCE on a time domain, and the pre-configuring or pre-defining the number of REG bundles contained in each CCE on a frequency domain;

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

4. The method according to claim 2, characterized in that the numbering rule of the plurality of resource element group, REG, bundles is:

numbering each resource unit group REG bundle on the lowest frequency domain in the first control resource set in sequence according to the time domain sequence; numbering each resource element group REG bundle on the next frequency domain of the first controlled resource set in sequence according to the sequence of the frequency domain of the first controlled resource set from low to high in time domain sequence until all resource element group REG bundles of the first controlled resource set are numbered;

or,

numbering resource unit group REG bundles on the highest frequency domain in the first control resource set in sequence according to time domain sequence; sequentially numbering each resource unit group REG bundle on the next frequency domain of the first control resource set according to the sequence of the frequency domains of the first control resource set from high to low in a time domain sequence until all resource unit group REG bundles of the first control resource set are numbered;

or,

numbering resource unit group REG bundles on a time domain which starts at first in the first control resource set from low to high in sequence according to a frequency domain; sequentially numbering each resource unit group REG bundle in the next time domain of the first control resource set from low to high in the frequency domain according to the time domain sequence of the first control resource set until all resource unit group REG bundles of the first control resource set are numbered;

or,

numbering resource unit group REG bundles on a time domain which starts at first in the first control resource set from high to low in sequence according to a frequency domain; and numbering each resource unit group REG bundle in the next time domain of the first control resource set from high to low in sequence in the frequency domain according to the time domain sequence of the first control resource set until all resource unit group REG bundles of the first control resource set are numbered.

5. The method of claim 1, wherein the CCE to REG mapping of the plurality of resource element group, REG, bundles according to the number of the plurality of REG bundles of the first control resource set and a control channel element, CCE, size comprises:

according to the mapping rule of the second pre-configuration mode, the mapping rule of the third pre-configuration mode, the numbers of the resource element group REG bundles and the CCE size of the control channel element, carrying out CCE-to-REG mapping on the resource element group REG bundles;

6. The method of claim 5,

the mapping rule of the time domain interleaving pattern is related to at least one of: the method comprises the steps of controlling the resource allocation of a first control resource set, wherein the first control resource set comprises the TDM REG bundle number, the configured or predefined time domain interleaving size, the preconfigured or predefined REG bundle number contained in each CCE in the time domain, and the preconfigured or predefined REG bundle number contained in each CCE in the frequency domain;

the mapping rule of the frequency domain interleaving pattern is related to at least one of: the method comprises the steps of controlling the resource allocation of a first control resource set, wherein the first control resource set comprises the TDM REG bundle number, the configured or predefined frequency domain interleaving size, the preconfigured or predefined REG bundle number contained in each CCE in a time domain, and the preconfigured or predefined REG bundle number contained in each CCE in a frequency domain;

the mapping rule of the time domain non-interleaved mode is related to at least one of: the number of REG bundles for time division multiplexing TDM in the first control resource set, the number of REG bundles contained in each CCE on a time domain which is pre-configured or predefined, and the number of REG bundles contained in each CCE on a frequency domain which is pre-configured or predefined;

the mapping rule of the frequency domain non-interleaved mode is related to at least one of: the number of REG bundles for time division multiplexing TDM in the first control resource set, the number of REG bundles contained in each CCE on a time domain, which is pre-configured or predefined, and the number of REG bundles contained in each CCE on a frequency domain, which is pre-configured or predefined.

7. The method according to claim 5, characterized in that the number of each of the plurality of resource element group REG bundles comprises a time domain number and a frequency domain number.

8. The method of claim 1, wherein the Control Channel Element (CCE) size is related to a number of symbols of the first control resource set.

9. The method according to claim 1, wherein before CCE to REG mapping of a plurality of resource element group, REG, bundles according to their numbers and control channel element, CCE, sizes, of a first control resource set, the method further comprises:

dividing a second set of control resources into a plurality of the first set of control resources according to configuration information of the second set of control resources.

10. The method of claim 9, wherein the configuration information of the second control resource set comprises a total number of first control resource sets into which the second control resource set is to be divided and/or a number of symbols of one of the first control resource sets.

11. The method of claim 9, wherein the configuration information of the second control resource set comprises a number of symbols of the second control resource set;

the dividing the second set of control resources into a plurality of the first sets of control resources according to configuration information of the second set of control resources comprises:

determining the total number of first control resource sets into which the second control resource set is to be divided and/or the number of symbols of one first control resource set according to the number of symbols of the second control resource set;

dividing the second control resource set into the plurality of first control resource sets according to the total number of the first control resource sets and/or the number of symbols of one first control resource set.

12. The method of claim 9, wherein the determining the candidate Physical Downlink Control Channel (PDCCH) for the first set of control resources according to the at least one CCE comprises:

determining the candidate Physical Downlink Control Channel (PDCCH) according to the number of the CCE of the plurality of the first control resource sets;

13. The method of claim 9, wherein a numbering rule for CCEs of the plurality of the first control resource sets comprises:

after numbering the jth CCE in the last first control resource set, taking the number of the jth CCE in the last first control resource set as the starting point of the next numbering, wherein j = j +1, and returning to execute the numbering step until numbering is finished on all CCEs in the plurality of first control resource sets; j is from [1,a ]; a represents the number of CCEs of one of the first control resource sets.

14. The method of any of claims 1-13, wherein said determining, from the at least one CCE, a physical downlink control channel, PDCCH, candidate for the first set of control resources comprises:

combining the at least one CCE of the first control resource set to obtain at least one CCE group, wherein one CCE group comprises at least one CCE;

and mapping the PDCCH to the CCE group of the at least one CCE group to obtain the candidate physical downlink control channel PDCCH.

15. An apparatus for determining a physical downlink control channel, comprising:

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

the device further comprises:

an REG bundle determining module configured to determine the plurality of resource element group REG bundles according to a REG bundle size and REGs of the first control resource set;

16. A network device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method for determining a physical downlink control channel according to any one of claims 1 to 14.

17. A user equipment comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps of the method for determining a physical downlink control channel according to any one of claims 1 to 14.

18. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for determining a physical downlink control channel according to any one of claims 1 to 14.