CN111278004B

CN111278004B - Method, terminal, medium and network device for determining physical downlink control channel candidate position

Info

Publication number: CN111278004B
Application number: CN201910017033.XA
Authority: CN
Inventors: 纪子超
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-01-08
Filing date: 2019-01-08
Publication date: 2021-06-08
Anticipated expiration: 2039-01-08
Also published as: WO2020143525A1; CN111278004A

Abstract

The invention provides a method, a terminal and network equipment for determining a position of a physical downlink control channel candidate, and relates to the technical field of communication. The method for determining the position of the physical downlink control channel candidate is applied to a terminal and comprises the following steps: sending terminal capability information to a network device, wherein the terminal capability information comprises: whether the terminal supports the capability of more than a preset number of CORESETs and/or the capability of receiving at least two TRPs; acquiring a starting offset value of a PDCCH candidate position in a search space of each CORESET; and determining the position of the PDCCH candidate in the search space of each CORESET according to the starting offset value. By the scheme, the probability that the search spaces of different terminals conflict with each other in different CORESETs can be reduced, the PDCCH blocking probability of the terminals is reduced, and the communication reliability is further ensured.

Description

Method, terminal, medium and network device for determining physical downlink control channel candidate position

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, a terminal, and a network device for determining a location of a physical downlink control channel candidate.

Background

In a New Radio (NR) system of Rel-15, a single bandwidth part (BWP) of a User Equipment (UE) supports and configures at most 3 Control resource sets (core). In order to support Transmission of PDCCH through multiple Transmission and Reception Points (TRPs) and multiple different beams (beams), the UE will need to support configuration of more CORESET.

However, the increased number of CORESET will result in increased probability that the search spaces of different UEs collide with each other in different CORESET, resulting in increased probability of PDCCH blocking (blocking) for the UE. The PDCCH candidates for different UEs may be determined by a pseudo-random function, thereby reducing the probability of mutual blocking. However, the NR system of Rel-15 only supports independent pseudo random numbers between a maximum of 3 CORESETs within one BWP, and when the number of CORESETs is greater than 3, the problem of using the same pseudo random number for multiple CORESETs cannot be avoided.

Disclosure of Invention

The embodiment of the invention provides a method, a terminal and a network device for determining a position of a physical downlink control channel candidate, which are used for solving the problems that an existing Rel-15 NR system only supports independent pseudo-random numbers among maximum 3 CORESETs in one BWP, and when the number of the CORESETs in one BWP is more than 3, a plurality of CORESETs use the same pseudo-random number, so that the probability of mutual collision of search spaces of different terminals in different CORESETs is increased, the PDCCH blocking probability of the terminal is increased, and the communication reliability cannot be ensured.

In order to solve the technical problem, the invention is realized by adopting the following modes:

in a first aspect, an embodiment of the present invention provides a method for determining a location of a physical downlink control channel candidate, where the method is applied to a terminal, and includes:

sending terminal capability information to a network device, wherein the terminal capability information comprises: whether the terminal supports the capability of controlling the resource sets CORESET with more than the preset number and/or the capability of receiving at least two sending and receiving points TRP or not;

acquiring a starting offset value of a Physical Downlink Control Channel (PDCCH) candidate position in a search space of each CORESET;

and determining the position of the PDCCH candidate in the search space of each CORESET according to the starting offset value.

In a second aspect, an embodiment of the present invention provides a method for determining a location of a physical downlink control channel candidate, which is applied to a network device, and includes:

receiving terminal capability information sent by a terminal, wherein the terminal capability information comprises: whether the terminal supports the capability of controlling the resource sets CORESET with more than the preset number and/or whether the terminal supports the capability of receiving TRP by at least two sending and receiving points;

determining a starting offset value of a Physical Downlink Control Channel (PDCCH) candidate position of the terminal in a search space of each CORESET;

and determining the position of the PDCCH candidate of the terminal in the search space of each CORESET according to the starting offset value.

In a third aspect, an embodiment of the present invention provides a terminal, including:

a sending module, configured to send terminal capability information to a network device, where the terminal capability information includes: whether the terminal supports the capability of controlling the resource sets CORESET with more than the preset number and/or the capability of receiving at least two sending and receiving points TRP or not;

the device comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for acquiring a starting offset value of a Physical Downlink Control Channel (PDCCH) candidate position in a search space of each CORESET;

and the first determining module is used for determining the position of the PDCCH candidate in the search space of each CORESET according to the starting offset value.

In a fourth aspect, an embodiment of the present invention provides a terminal, including: a memory, a processor 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 position of a physical downlink control channel candidate as described above.

In a fifth aspect, an embodiment of the present invention provides a network device, including:

a receiving module, configured to receive terminal capability information sent by a terminal, where the terminal capability information includes: whether the terminal supports the capability of controlling the resource sets CORESET with more than the preset number and/or whether the terminal supports the capability of receiving TRP by at least two sending and receiving points;

a second determining module, configured to determine a starting offset value of a PDCCH candidate position of a physical downlink control channel in a search space of each CORESET;

and a third determining module, configured to determine, according to the starting offset value, a position of the PDCCH candidate in the search space of each CORESET of the terminal.

In a sixth aspect, an embodiment of the present invention provides a network device, including: a memory, a processor 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 position of a physical downlink control channel candidate as described above.

In a seventh 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 the computer program, when executed by a processor, implements the steps of the method for determining a location of a physical downlink control channel candidate described above.

The invention has the beneficial effects that:

according to the scheme, under the condition that the capacity of the control resource sets CORESET with the number exceeding the preset number and/or the capacity of supporting the receiving of at least two transmitting and receiving points TRP are/is exceeded, the position of the PDCCH candidate in the search space of each CORESET is determined, the probability that the search spaces of different terminals conflict with each other in different CORESETs is reduced, the PDCCH blocking probability of the terminals is reduced, and the communication reliability is further ensured.

Drawings

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

fig. 2 shows a block diagram of a terminal according to an embodiment of the present invention;

fig. 3 shows a block diagram of a terminal according to an embodiment of the present invention;

fig. 4 is a second flowchart illustrating a method for determining a location of a pdcch candidate according to an embodiment of the present invention;

FIG. 5 is a block diagram of a network device according to an embodiment of the invention;

fig. 6 shows a block diagram of a network device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

In making the description of the embodiments of the present invention, some concepts used in the following description will first be explained.

A New Radio (NR) system of the fifth Generation (5Generation, 5G) of Rel-15 supports flexible resource allocation of a Physical Downlink Control Channel (PDCCH), and instead of multiplexing one same PDCCH in a whole cell, a Control resource set (core) may be independently configured for each User Equipment (UE) to monitor the PDCCH. The CORESET contains configuration information of independent time domain, frequency domain and space domain resources. Meanwhile, the 5G NR system supports the configuration of a plurality of search space sets for the UE, the blind detection number is flexibly configured for each search space, and the CORESET and the search space sets can be flexibly associated. Each CORESET may be associated with multiple search space sets, and the resources of the CORESET for different UEs may partially or fully overlap.

3GPP Rel-16 proposes a multi-Point and multi-antenna panel (multi-TRP/multi-panel) scenario, where Transmission and Reception Point (TRP) Transmission can increase reliability and throughput performance of Transmission, for example, a UE can receive the same data or different data from multiple TRPs. Several multiple TRP transmission scenarios were initially discussed:

1) multiple antenna panel transmission within the same TRP;

2) multiple TRP/panel transmission among multiple TRPs, ideal return line (backhaul);

3) multiple TRP/panel transmission between multiple TRPs, non-ideal backhaul.

The transmission scheme for multiple TRPs may be:

a1, multiple TRPs send multiple PDCCHs, multiple PDSCHs, and each TRP sends one PDCCH one PDSCH;

a2, multiple PDSCHs transmitting the same Transport Block (TB);

a3, multiple PDSCHs transmit different TBs.

The invention provides a method for determining a position of a physical downlink control channel candidate, a terminal and a network device, aiming at the problems that the prior NR system of Rel-15 only supports independent pseudo random numbers among maximum 3 CORESETs in a BWP, when the number of the CORESETs in the BWP is more than 3, a plurality of CORESETs use the same pseudo random number, so that the probability of mutual collision of search spaces of different terminals in different CORESETs is increased, the PDCCH blocking probability of the terminal is increased, and the communication reliability cannot be ensured.

As shown in fig. 1, an embodiment of the present invention provides a method for determining a location of a physical downlink control channel candidate, which is applied to a terminal, and includes:

step 101, sending terminal capability information to network equipment;

it should be noted that the terminal capability information includes: whether the terminal supports the capability of more than a preset number of control resource sets (CORESET) and/or the capability of at least two Transmitting and Receiving Points (TRP) for receiving;

specifically, the preset number may be the number of most core sets configured for each bandwidth part (BWP); or, the preset number is equal to the product of the number of BWPs supported by the terminal and the number of CORESET of the most supporting configuration per BWP, specifically, the number of CORESET of the most supporting configuration per BWP is equal to 3.

It should be further noted that the capability of whether the terminal supports at least two TRP receptions at the transmission reception point refers to the capability of whether the terminal supports more than one TRP reception.

Specifically, the capability of the terminal to receive from one TRP may be embodied in any one of the following ways including, but not limited to:

firstly, a terminal receives data associated with one or a group of target Transmission Configuration Indicators (TCIs);

it should be noted that the target TCI refers to a certain TCI or a specific type of TCI.

In this case, the capability of whether the terminal supports more than one TRP reception means: whether the terminal supports receiving data associated with more than one or more than one set of target TCIs.

The second way, the terminal receives data related to one or a group of target Quasi-co-location (QCL);

it should be noted that the target QCL refers to a certain QCL or a specific type of QCL.

In this case, the capability of whether the terminal supports more than one TRP reception means: whether the terminal supports receiving data associated with more than one or more than one set of target QCLs.

The terminal receives data related to one or a group of beam information;

in this case, the capability of whether the terminal supports more than one TRP reception means: whether the terminal supports receiving data associated with more than one or more than one set of beam information.

The terminal receives data related to one or a group of panels;

in this case, the capability of whether the terminal supports more than one TRP reception means: whether the terminal supports receiving data associated with more than one or more than one set of panels.

A fifth mode, the terminal receives data associated with not more than a predefined number of TCIs;

in this case, the capability of whether the terminal supports more than one TRP reception means: whether the terminal supports receiving data associated with more than a predefined number of TCIs.

A sixth mode is that the terminal receives a control channel using one or a preset number of target scrambling code IDs, or the terminal receives a data channel using one or a preset number of target scrambling code IDs;

in this case, the capability of whether the terminal supports more than one TRP reception means: whether the terminal supports receiving the control channel using more than one or more than a preset number of target scrambling code IDs; or whether the terminal supports reception of data channels using more than one or more than a preset number of target scrambling code IDs.

A seventh mode, in which the terminal receives a control channel of a demodulation reference signal (DMRS) using one or a preset number of target scrambling code IDs, or the terminal receives a data channel of a DMRS using one or a preset number of target scrambling code IDs;

in this case, the capability of whether the terminal supports more than one TRP reception means: whether the terminal supports receiving the control channel of the DMRS using more than one or more than a preset number of target scrambling IDs; or whether the terminal supports reception of a data channel using DMRSs that exceed one or more than a preset number of target scrambling code IDs.

102, acquiring a starting offset value of a Physical Downlink Control Channel (PDCCH) candidate position in a search space of each CORESET;

it should be noted that the configuration information may be fed back by the network device according to the terminal capability information, or may be fed back by the network device according to the system requirement without according to the terminal capability information.

Step 103, determining the position of the PDCCH candidate in the search space of each CORESET according to the starting offset value.

Further, it should be noted that, when the terminal does not receive the configuration information sent by the network device, the specific implementation manner of step 102 is:

determining a starting offset value of a PDCCH candidate position according to a preset rule;

wherein the preset rule comprises at least one of the following modes:

c11, determining the starting offset value of the PDCCH candidate position in the Common Search Space (CSS) of each CORESET to be zero;

in this case, the start offset value is set to zero directly for the CSS.

C12, determining a starting offset value of a PDCCH candidate position in a terminal specific search space (USS) of each CORESET by using a preset pseudo random number seed;

in this case, for USS, using equation one:

a starting offset value is obtained, wherein,

refers to the number of slots in a radio frame when the subcarrier spacing is configured as mu,

is composed of

The number of the previous one of the time slots, for example,

is the 2 nd slot of the radio frame,

then it is the 1 st slot;

for the p CORESET

A starting offset value of a PDCCH candidate position of a search space of a time slot;

for the p CORESET

A starting offset value of a PDCCH candidate position of a search space of a time slot; a. the_pA pseudo random number seed for the p < th > CORESET; y is_p,-1＝n_RNTINot equal to 0, when pmod3 is 0, A_p39827, when pmod3 is 1, a_p39829, when pmod3 is 2, a_p39839, and D65537; n is_RNTIIs the Radio Network Temporary Identity (RNTI) of the terminal.

Further, it should be noted that, when the terminal receives the configuration information sent by the network device, the specific implementation manner of step 102 is:

and determining a starting offset value of the PDCCH candidate position in the search space of each CORESET according to the configuration information.

It should be noted that the configuration information may explicitly configure a starting offset value of a PDCCH candidate position, or implicitly configure a starting offset value of a PDCCH candidate position, and the following specifically describes an implementation manner of step 102 from the perspective of explicit configuration and implicit configuration, respectively.

One, explicit configuration

In this manner, step 102 may be implemented in at least one of the following ways:

d11, acquiring a Radio Resource Control (RRC) parameter configuration value configured for the CSS in the configuration information, and determining the RRC parameter configuration value as a starting offset value of a PDCCH candidate position in the CSS of CORESET;

in this way, when the configuration information carries the RRC parameter configuration value, and the terminal receives the configuration information carrying the RRC parameter configuration value, the terminal directly determines that the starting offset value of the PDCCH candidate position in the CSS of the CORESET is the RRC parameter configuration value.

D12, acquiring a first pseudo random number seed configured for the USS in the configuration information, and determining a starting offset value of a PDCCH candidate position in the USS of CORESET according to the first pseudo random number seed;

in this case, the network device carries a predefined first pseudo random number seed in the configuration information, and it should be noted that the first pseudo random number seeds for different CORESET are distinguished by different identification information indicated by RRC signaling.

For example, the predefined first pseudo random number seed is: a. the₀＝39827，A₁＝39829，A₂＝39839， A₃＝39841，A₄＝39847，A₅＝39857，A₆39863; the subscripts correspond to the labels of the pseudo random number seeds, and the subscripts are carried in the configuration information when the network device sends the first pseudo random number seeds, so that signaling overhead is saved.

It should be further noted that, in this case, the starting offset value of the PDCCH candidate position in the USS of CORESET may be obtained in the form of the above formula one, and is not described herein again.

Two, implicit configuration

1. The configuration information includes: identification information of CORESET

1.1, optionally, in this case, if the identification information of the CORESET is smaller than a first preset value, determining a starting offset value of the PDCCH candidate position according to a preset rule;

it should be noted that the first preset value is the number of most CORESET configurations supported by each BWP; or, the first preset value is equal to the product of the number of BWPs supported by the terminal and the number of CORESET configured to the most support of each BWP, where the number of CORESET configured to the most support of each BWP is equal to 3.

Specifically, the preset rule includes at least one of the following modes:

d21, determining the starting offset value of the PDCCH candidate position in the CSS of each CORESET to be zero;

it should be noted that this method is the same as the implementation of C11, and is not described here.

D22, determining a starting offset value of the PDCCH candidate position in the USS of each CORESET by using a preset pseudo-random number seed;

it should be noted that this method is the same as the implementation of C12, and is not described here.

1.2, optionally, in this case, if the identification information of the CORESET is greater than or equal to the first preset value, determining a starting offset value of the PDCCH candidate position of the CORESET according to the type of the search space.

Specifically, when the type of the search space is CSS, a specific implementation manner of determining the starting offset value of the PDCCH candidate position of CORESET is as follows:

determining the target value as a starting offset value of a PDCCH candidate position of CORESET;

it should be noted that the target value may be a first predetermined constant value, and the first predetermined constant value is notified by a protocol agreement or a network device.

The target value may also be determined according to at least one of the number of Control Channel Elements (CCEs), the number of TRPs, a carrier indicator field value, an aggregation level, and identification information of a Transmission Configuration Indication (TCI) in CORESET; for example, the target value ═ number of CCEs in CORESET/(T aggregation level), T is the number of TRPs or TCI packets, and T is the number of target TRPs or TCI packets, and particularly, when T is 2, the target value ═ floor { number of CCEs in CORESET/(T aggregation level) }; alternatively, the target value is the aggregation level t.

Specifically, when the type of the search space is USS, a specific implementation manner of determining the starting offset value of the PDCCH candidate position of CORESET is one of the following manners:

d31, determining a starting offset value of the PDCCH candidate position of the CORESET according to the second pseudo-random number seed;

it should be noted that the second pseudo random number seed is different from the corresponding pseudo random number seed when the identification information of the CORESET is smaller than the preset number.

For example, a new pseudo random number seed is redefined, and a different pseudo random number seed is selected than when the identification information of CORESET is smaller than a first preset value, for example, when pmod3 is 0, a_p39841, when pmod3 is 1, A_p39847, when pmod3 is 2, a_p＝39857。

D32, determining a starting offset value of the PDCCH candidate position of CORESET according to the first target offset and a preset pseudo-random number seed;

it should be noted that, the first target offset is a second preset constant value; or the first target offset may be determined according to at least one of the number of CCEs in the CORESET, the number of TRPs, the carrier indication field value, the aggregation level, and the identification information of the TCI, for example, the first target offset is the number of CCEs in the CORESET × (T × aggregation level), T is the number of TRPs or the number of TCI packets, and T is the number of target TRPs or TCI packets, and in particular, when T is 2, the first target offset is floor { the number of CCEs in the CORESET/(T × aggregation level) }; alternatively, the target value is the aggregation level t. It should be noted that the preset pseudo random number seed may be the same as or different from a corresponding pseudo random number seed when the existing identification information of the CORESET is less than a preset number.

It should be further noted that the USS and the CSS of the same terminal may be configured with the same first target offset, which may simplify implementation complexity.

Specifically, in this case, the specific way to obtain the starting offset value of the PDCCH candidate position of CORESET is as follows:

using equation two:

a starting offset value is obtained, wherein,

is composed of

The number of the previous one of the time slots, for example,

is the 2 nd slot of the radio frame,

then it is the 1 st slot;

for the p CORESET

for the p CORESET

A starting offset value of a PDCCH candidate position of a search space of a time slot; a. the_pA pseudo random number seed for the p < th > CORESET; for example, Y_p,-1＝n_RNTINot equal to 0, when pmod3 is 0, A_p39827, when pmod3 is 1, a_p39829, when pmod3 is 2, a_p39839, and D65537; n is_RNTIA Radio Network Temporary Identity (RNTI) for the terminal; o is the first target offset.

D33, determining a third pseudo-random number seed for obtaining a starting offset value of the PDCCH candidate position of CORESET according to the number of most supported and configured CORESET in each BWP and the identification information of CORESET, and determining the starting offset value of the PDCCH candidate position of CORESET according to the third pseudo-random number seed;

in this case, the number of most core sets supporting configuration in each BWP is greater than 3.

For example, the number of CORESET configurations in the most supported configuration per BWP is equal to 6, and when pmod6 is 0, a_p39827, when pmod6 is 1, a_p39829, when pmod6 is 2, a_p39839, when pmod6 is 3, a_p39841, when pmod6 is 4, A_p39847, when pmod6 is 5, a_p＝39857。

2. The configuration information includes: transmission Configuration Indication (TCI)

2.1, optionally, under the condition, if the flag information of the TCI is smaller than a second preset value, determining a starting offset value of the PDCCH candidate position according to a preset rule;

it should be noted that the second preset value is a preset constant value agreed by the protocol.

Specifically, the preset rule includes at least one of the following modes:

d31, determining the starting offset value of the PDCCH candidate position in the CSS of each CORESET to be zero;

D32, determining a starting offset value of the PDCCH candidate position in the USS of each CORESET by using a preset pseudo-random number seed;

2.2, optionally, in this case, if the flag information of the TCI is greater than or equal to the second preset value, determining a starting offset value of the PDCCH candidate position of the CORESET according to the type of the search space.

It should be noted that, in this case, the implementation manner of determining the starting offset value of the PDCCH candidate position of CORESET according to the type of the search space is the same as the implementation manner of determining the starting offset value of the PDCCH candidate position of CORESET according to the type of the search space if the identification information of CORESET is greater than or equal to the first preset value, and is not described herein again.

3. The configuration information includes: TRP indicator parameter

In particular, in this case, the specific implementation manner of determining the starting offset value of the PDCCH candidate position in the search space of each CORESET according to the configuration information includes at least one of the following manners:

d41, determining a third preset constant value as a starting offset value of the PDCCH candidate position in CSS of CORESET;

it should be noted that the third predetermined constant value is determined by the identification information of the TRP indication parameter.

For example, the third predetermined constant value — TRP indicates the identification information mod M1 of the parameter, where M1 is the maximum number of TRPs supported by the terminal.

D42, determining a starting offset value of the PDCCH candidate position in the terminal specific search space USS of CORESET according to the fourth pseudo-random number seed;

it should be noted that the fourth pseudo random number seed is determined by the identification information of the TRP indication parameter.

For example, when the identification information of the TRP indication parameter is zero, and pmod3 is 0, a_p39827, when pmod3 is 1, a_p39829, when pmod3 is 2, a_p39839; when the identification information of the TRP indication parameter is one, and pmod3 is 0, a_p39841, when pmod3 is 1, A_p39847, when pmod3 is 2, a_p＝39857。

It should be noted that, in this case, the starting offset value of the PDCCH candidate position in the USS of CORESET may be obtained in the form of the above formula one, and is not described herein again.

D43, determining a starting offset value of the PDCCH candidate position in the USS of CORESET according to the preset pseudo random number seed and the second target offset;

it should be noted that the second target offset is determined by identification information of the TRP indication parameter. The preset pseudo random number seed may be the same as or different from a corresponding pseudo random number seed when the identification information of the CORESET is less than a preset number.

using the formula three:

a starting offset value is obtained, wherein,

is composed of

The number of the previous one of the time slots, for example,

is the 2 nd slot of the radio frame,

then it is the 1 st slot;

for the p CORESET

is as followsp CORESET in

A starting offset value of a PDCCH candidate position of a search space of a time slot; a. the_pA pseudo random number seed for the p < th > CORESET; for example, Y_p,-1＝n_RNTINot equal to 0, when pmod3 is 0, A_p39827, when pmod3 is 1, a_p39829, when pmod3 is 2, a_p39839, and D65537; n is_RNTIA Radio Network Temporary Identity (RNTI) for the terminal; o1 is the second target offset.

It should be noted that, after obtaining the starting offset value of the PDCCH candidate position in the search space of each CORESET, the position of the PDCCH candidate in the search space of each CORESET is determined according to the starting offset value, and specifically, the implementation manner is:

according to the formula four:

acquiring the position of a PDCCH candidate in the search space of each CORESET;

wherein the content of the first and second substances,

controlling the number of control channel units in the resource set P; n is_CIIndicating a field value for a carrier; l is the polymerization grade;

a starting offset value for a PDCCH candidate location;

to be a set of search spaces s in the control resource set p, n corresponding to all configurations_CIOf the serving cell, i.e. n for each configuration_CIHas a M^LHere, the

Is all M^LMaximum value of (1);

corresponding to n in search space set s configured for terminal monitoring_CIAnd aggregating the number of PDCCH candidates of level L; i is a number from 0 to L-1.

It should be noted that, after the terminal sends the terminal capability information to the network device, if the network device and the terminal have the same capability, the configuration information may be fed back to the terminal; if the capabilities of the network device and the terminal are not matched, the network device does not feed back configuration information to the terminal, and the terminal determines the initial offset value according to the existing mode under the condition that the configuration information is not received, so that forward compatibility can be ensured.

It should be noted that, different random positions are allocated to PDCCH candidates in different CORESET to reduce the blocking probability between different terminals, on one hand, the CORESET number of a single BWP supported by a terminal and the total CORESET number can be increased, so that application scenarios such as multiple TRP transmission scenarios can be supported; on the other hand, the embodiment of the present invention can maintain forward compatibility, that is, when one of the network side or the terminal is an old device supporting only Rel-15 (for example, does not support multiple CORESET or multiple TRP transmissions), or when the terminals in the cell are mixed with different release devices, the system can still work normally.

As shown in fig. 2, an embodiment of the present invention provides a terminal 200, including:

a sending module 201, configured to send terminal capability information to a network device, where the terminal capability information includes: whether the terminal supports the capability of controlling the resource sets CORESET with more than the preset number and/or the capability of receiving at least two sending and receiving points TRP or not;

a first obtaining module 202, configured to obtain a starting offset value of a PDCCH candidate position in a search space of each CORESET;

a first determining module 203, configured to determine, according to the starting offset value, a position of a PDCCH candidate in the search space of each CORESET.

Specifically, the preset number is the number of most support configured CORESET for each bandwidth part BWP; or

The preset number is equal to the product of the number of the BWPs supported by the terminal and the number of CORESET configured by the most supports of each BWP;

wherein the number of CORESETs of the most supported configuration per BWP is equal to 3.

Optionally, the first obtaining module 202 is configured to:

if the configuration information sent by the network equipment is not received, determining a starting offset value of the PDCCH candidate position according to a preset rule;

wherein the preset rule comprises at least one of the following modes:

determining a starting offset value of a PDCCH candidate position in a common search space CSS of each CORESET to be zero;

the starting offset value of the PDCCH candidate position in the terminal specific search space USS of each CORESET is determined using a preset pseudo random number seed.

Optionally, the first obtaining module 202 is configured to:

and if the configuration information sent by the network equipment is received, determining a starting offset value of the PDCCH candidate position in the search space of each CORESET according to the configuration information.

Further, the first obtaining module 202 is configured to implement at least one of the following manners:

acquiring a Radio Resource Control (RRC) parameter configuration value configured for a Common Search Space (CSS) in the configuration information, and determining the RRC parameter configuration value as a starting offset value of a PDCCH candidate position in the CSS of CORESET;

and acquiring a first pseudo random number seed configured for the terminal specific search space USS in the configuration information, and determining a starting offset value of a PDCCH candidate position in the USS of CORESET according to the first pseudo random number seed.

Specifically, different first pseudo random number seeds are distinguished by different identification information indicated by RRC signaling.

Further, when the configuration information includes: when the identity information of the CORESET is obtained, the first obtaining module 202 is configured to:

if the identification information of CORESET is smaller than a first preset value, determining a starting deviation value of the PDCCH candidate position according to a preset rule;

wherein the preset rule comprises at least one of the following modes:

and if the identification information of the CORESET is greater than or equal to a first preset value, determining a starting offset value of the PDCCH candidate position of the CORESET according to the type of the search space.

Specifically, the first preset value is the number of most CORESETs configured for each BWP; or

The first preset value is equal to the product of the number of bandwidth parts BWP supported by the terminal and the number of CORESET most supported and configured by each BWP;

Further, when the configuration information includes: when the transmission configuration indicates TCI, the first obtaining module 202 is configured to:

if the flag information of the TCI is smaller than a second preset value, determining a starting offset value of the PDCCH candidate position according to a preset rule;

wherein the preset rule comprises at least one of the following modes:

and if the flag information of the TCI is greater than or equal to a second preset value, determining a starting offset value of the PDCCH candidate position of the CORESET according to the type of the search space.

Specifically, when the type of the search space is the common search space CSS, the first obtaining module 202 determines, according to the type of the search space, that the starting offset value of the PDCCH candidate position of the CORESET is implemented as follows:

wherein the target value is a first preset constant value; or

The target value is determined according to at least one item of identification information of the number of Control Channel Elements (CCEs), the number of TRPs, a carrier indication field value, an aggregation level and a Transmission Configuration Indication (TCI) in the CORESET.

Specifically, when the type of the search space is the terminal-specific search space USS, the implementation manner of determining the starting offset value of the PDCCH candidate position of the CORESET by the first obtaining module 202 according to the type of the search space includes one of the following manners:

determining a starting offset value of the PDCCH candidate position of the CORESET according to the second pseudo-random number seed;

determining a starting offset value of a PDCCH candidate position of CORESET according to the first target offset and a preset pseudo-random number seed;

determining a third pseudo random number seed for obtaining a starting offset value of the PDCCH candidate position of the CORESET according to the number of most supported and configured CORESET in each BWP and the identification information of the CORESET, and determining the starting offset value of the PDCCH candidate position of the CORESET according to the third pseudo random number seed;

the second pseudo-random number seed is different from the corresponding pseudo-random number seed when the identification information of the CORESET is less than the preset number; the first target offset is determined according to at least one item of identification information of a Control Channel Element (CCE) number, a carrier indicator field value, an aggregation level and a Transmission Configuration Indicator (TCI) in CORESET, or the first target offset is a second preset constant value; the number of the most support configured CORESET in each BWP is more than 3.

Further, when the configuration information includes: when the TRP indicates a parameter, the first obtaining module 202 is configured to implement at least one of the following manners:

determining a third preset constant value as a starting offset value of a PDCCH candidate position in a Common Search Space (CSS) of a CORESET, wherein the third preset constant value is determined by identification information of a TRP (transient response time indicator) indication parameter;

determining a starting offset value of a PDCCH candidate position in a terminal specific search space USS of CORESET according to a fourth pseudo random number seed, wherein the fourth pseudo random number seed is determined by identification information of TRP indication parameters;

and determining a starting offset value of a PDCCH candidate position in the USS of CORESET according to a preset pseudo-random number seed and a second target offset, wherein the second target offset is determined by the identification information of the TRP indication parameter.

It should be noted that, the terminal embodiment is a terminal corresponding to the above method for determining a location of a physical downlink control channel candidate applied to a terminal, and all implementations of the above embodiments are applicable to the terminal embodiment, and can achieve the same technical effects as the terminal embodiment.

Fig. 3 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present invention.

The terminal 30 includes but is not limited to: radio frequency unit 310, network module 320, audio output unit 330, input unit 340, sensor 350, display unit 360, user input unit 370, interface unit 380, memory 390, processor 311, and power supply 312. Those skilled in the art will appreciate that the terminal structure shown in fig. 3 is not intended to be limiting and that the terminal 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 terminal 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 radio frequency unit 310 is configured to send terminal capability information to a network device, where the terminal capability information includes: whether the terminal supports the capability of controlling the resource sets CORESET with more than the preset number and/or the capability of receiving at least two sending and receiving points TRP or not;

the processor 311 is configured to obtain a starting offset value of a PDCCH candidate position of a physical downlink control channel in a search space of each CORESET;

The terminal of the embodiment of the invention determines the position of the PDCCH candidate in the search space of each CORESET under the condition that the capability of controlling the resource sets CORESET with more than the preset number and/or the capability of supporting the receiving of at least two sending and receiving points TRP, reduces the probability of the mutual conflict of the search spaces of different terminals in different CORESETs, reduces the PDCCH blocking probability of the terminal and further ensures the communication reliability.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 310 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, after receiving downlink data from a network device, the downlink data is processed by the processor 311; in addition, the uplink data is sent to the network device. In general, radio frequency unit 310 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 unit 310 may also communicate with a network and other devices through a wireless communication system.

The terminal provides the user with wireless broadband internet access through the network module 320, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 330 may convert audio data received by the radio frequency unit 310 or the network module 320 or stored in the memory 390 into an audio signal and output as sound. Also, the audio output unit 330 may also provide audio output related to a specific function performed by the terminal 30 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 330 includes a speaker, a buzzer, a receiver, and the like.

The input unit 340 is used to receive an audio or video signal. The input Unit 340 may include a Graphics Processing Unit (GPU) 341 and a microphone 342, and the Graphics processor 341 processes image data of a still picture or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 360. The image frames processed by the graphic processor 341 may be stored in the memory 390 (or other storage medium) or transmitted via the radio frequency unit 310 or the network module 320. The microphone 342 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to the mobile communication network device via the radio frequency unit 310 in case of the phone call mode.

The terminal 30 also includes at least one sensor 350, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 361 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 361 and/or the backlight when the terminal 30 moves 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 terminal 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 350 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 will not be described in detail herein.

The display unit 360 is used to display information input by a user or information provided to the user. The Display unit 360 may include a Display panel 361, and the Display panel 361 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 370 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 370 includes a touch panel 371 and other input devices 372. Touch panel 371, also referred to as a touch screen, may collect touch operations by a user on or near touch panel 371 (e.g., operations by a user on or near touch panel 371 using a finger, a stylus, or any suitable object or attachment). The touch panel 371 may include two parts of 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 311, and receives and executes commands sent by the processor 311. In addition, the touch panel 371 may be implemented in various types, such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 370 may include other input devices 372 in addition to the touch panel 371. In particular, the other input devices 372 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described herein again.

Further, the touch panel 371 may be overlaid on the display panel 361, and when the touch panel 371 detects a touch operation thereon or nearby, the touch panel 371 is transmitted to the processor 311 to determine the type of the touch event, and then the processor 311 provides a corresponding visual output on the display panel 361 according to the type of the touch event. Although the touch panel 371 and the display panel 361 are shown in fig. 3 as two separate components to implement the input and output functions of the terminal, in some embodiments, the touch panel 371 and the display panel 361 may be integrated to implement the input and output functions of the terminal, and is not limited herein.

The interface unit 380 is an interface for connecting an external device to the terminal 30. 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 380 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 terminal 30 or may be used to transmit data between the terminal 30 and external devices.

The memory 390 may be used to store software programs as well as various data. The memory 390 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by 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 390 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 311 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 390 and calling data stored in the memory 390, thereby integrally monitoring the terminal. Processor 311 may include one or more processing units; preferably, the processor 311 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 will be appreciated that the modem processor described above may not be integrated into the processor 311.

The terminal 30 may further include a power supply 312 (such as a battery) for supplying power to various components, and preferably, the power supply 312 may be logically connected to the processor 311 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.

In addition, the terminal 30 includes some functional modules that are not shown, and are not described in detail herein.

Preferably, an embodiment of the present invention further provides a terminal, including a processor 311, a memory 390, and a computer program stored in the memory 390 and capable of running on the processor 311, where the computer program, when executed by the processor 311, implements each process of the embodiment of the method for determining a location of a physical downlink control channel candidate applied to the terminal side, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

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 executed by a processor, the computer program implements each process of the embodiment of the method for determining a location of a physical downlink control channel candidate applied to a terminal side, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

As shown in fig. 4, an embodiment of the present invention provides a method for determining a location of a physical downlink control channel candidate, which is applied to a network device, and includes:

step 401, receiving terminal capability information sent by a terminal;

it should be noted that the terminal capability information includes: whether the terminal supports the capability of controlling the resource sets CORESET with more than the preset number and/or whether the terminal supports the capability of receiving TRP by at least two sending and receiving points;

specifically, the preset number is the number of most configured CORESET supported by each BWP of the terminal; or

The preset number is equal to the product of the number of bandwidth parts BWP supported by the terminal and the number of most configured CORESET per BWP of the terminal, wherein the number of most configured CORESET per BWP is equal to 3.

Step 402, determining a starting offset value of a Physical Downlink Control Channel (PDCCH) candidate position of the terminal in a search space of each CORESET;

step 403, determining the position of the PDCCH candidate of the terminal in the search space of each CORESET according to the starting offset value.

It should be noted that, after the network device determines the position of the PDCCH candidate in the search space of each CORESET, the network device may transmit the PDCCH resource according to the position of the PDCCH candidate.

It should be further noted that the network device may also feed back configuration information to the terminal, and the terminal determines the starting offset value of the PDCCH candidate position in the search space of each CORESET according to the configuration information of the network device, so as to obtain the position of the PDCCH candidate in the search space of each CORESET, and receive the PDCCH at the corresponding position.

Optionally, the determining a starting offset value of a PDCCH candidate position of the physical downlink control channel in the search space of each CORESET by the terminal includes:

determining a starting offset value of the PDCCH candidate position according to a preset rule;

wherein the preset rule comprises at least one of the following modes:

determining a starting offset value of a PDCCH candidate position of the terminal in a Common Search Space (CSS) of each CORESET to be zero;

and determining a starting offset value of the PDCCH candidate position of the terminal in the terminal specific search space USS of each CORESET by utilizing a preset pseudo random number seed.

Optionally, the determining a starting offset value of a PDCCH candidate position of the terminal in the search space of each CORESET includes at least one of the following ways:

acquiring a Radio Resource Control (RRC) parameter configuration value configured for a Common Search Space (CSS), and determining the RRC parameter configuration value as a starting offset value of a PDCCH candidate position of the terminal in the CSS of the CORESET;

the method comprises the steps of obtaining a first pseudo random number seed configured aiming at a terminal specific search space USS, and determining a starting offset value of a PDCCH candidate position of the terminal in the USS of CORESET according to the first pseudo random number seed.

In particular, different first pseudo random number seeds are distinguished by different identification information.

determining a starting offset value of a PDCCH candidate position of the terminal in a search space of each CORESET according to preset parameters;

wherein the preset parameters include: at least one of identity information of CORESET, transmission configuration indication TCI and TRP indication parameters.

Further, when the preset parameters include: when the information of the CORESET identifiers is obtained, the determining the starting offset value of the PDCCH candidate position of the terminal in the search space of each CORESET comprises the following steps:

wherein the preset rule comprises at least one of the following modes:

It should be noted that, the first preset value is the number of most CORESET supporting configuration for each BWP; or

Further, when the preset parameters include: when the transmission configuration indicates TCI, the determining a starting offset value of a PDCCH candidate position of the terminal in a search space of each CORESET comprises the following steps:

wherein the preset rule comprises at least one of the following modes:

and if the flag information of the TCI is greater than or equal to a second preset value, determining a starting offset value of the terminal at the PDCCH candidate position of the CORESET according to the type of the search space.

Specifically, when the type of the search space is the common search space CSS, the determining, according to the type of the search space, a starting offset value of the terminal at a PDCCH candidate position of the CORESET includes:

wherein the target value is a first preset constant value; or

Specifically, when the type of the search space is the terminal-specific search space USS, determining a starting offset value of the terminal at a PDCCH candidate position of the CORESET according to the type of the search space includes one of the following ways:

determining a starting offset value of the terminal at a PDCCH candidate position of CORESET according to the second pseudo-random number seed;

determining a third pseudo random number seed for obtaining a starting offset value of the terminal at the PDCCH candidate position of the CORESET according to the number of most supported and configured CORESET in each BWP and the identification information of the CORESET, and determining the starting offset value of the terminal at the PDCCH candidate position of the CORESET according to the third pseudo random number seed;

Further, when the preset parameters include: when the TRP indicates the parameter, the determining of the starting offset value of the PDCCH candidate position of the terminal in the search space of each CORESET comprises at least one of the following modes:

determining a third preset constant value as a starting offset value of a PDCCH candidate position of the terminal in a Common Search Space (CSS) of a CORESET, wherein the third preset constant value is determined by identification information of a TRP (transient response time indicator) indication parameter;

determining a starting offset value of a PDCCH candidate position of the terminal in a terminal specific search space USS of CORESET according to a fourth pseudo-random number seed, wherein the fourth pseudo-random number seed is determined by identification information of TRP indication parameters;

It should be noted that, in this embodiment, a manner of determining a starting offset value of a PDCCH candidate position in the search space of each CORESET by the terminal is the same as a manner of determining a starting offset value of a PDCCH candidate position in the search space of each CORESET by the terminal side, and details are not repeated in the embodiment of the present invention.

It should be further noted that, in order to ensure the reliability of PDCCH transmission, the network device and the terminal have consistent understanding of the starting offset value of the PDCCH candidate location and the location of the PDCCH candidate.

According to the embodiment of the invention, under the condition that the terminal exceeds the capability of controlling the resource sets CORESET with the preset number and/or supports the receiving capability of at least two sending and receiving points TRP, the position of the PDCCH candidate in the search space of each CORESET is determined, the probability that the search spaces of different terminals conflict with each other in different CORESETs is reduced, the PDCCH blocking probability of the terminal is reduced, and the communication reliability is further ensured.

As shown in fig. 5, an embodiment of the present invention provides a network device 500, including:

a receiving module 501, configured to receive terminal capability information sent by a terminal, where the terminal capability information includes: whether the terminal supports the capability of controlling the resource sets CORESET with more than the preset number and/or whether the terminal supports the capability of receiving TRP by at least two sending and receiving points;

a second determining module 502, configured to determine a starting offset value of a PDCCH candidate position of a physical downlink control channel in a search space of each CORESET;

a third determining module 503, configured to determine, according to the starting offset value, a position of the PDCCH candidate in the search space of each core set of the terminal.

The preset number is equal to the product of the number of bandwidth parts BWP supported by the terminal and the number of CORESET configured by the most supported BWP of the terminal;

Optionally, the second determining module 502 is configured to:

wherein the preset rule comprises at least one of the following modes:

Optionally, the second determining module 502 implements at least one of the following manners:

Optionally, the second determining module 502 is configured to:

Further, when the preset parameters include: when the identity information of the CORESET is obtained, the second determining module 502 is configured to:

wherein the preset rule comprises at least one of the following modes:

Further, when the preset parameters include: when the transmission configuration indicates TCI, the second determining module 502 is configured to:

wherein the preset rule comprises at least one of the following modes:

Specifically, when the type of the search space is the common search space CSS, the second determining module 502 determines, according to the type of the search space, that the starting offset value of the PDCCH candidate position of the terminal in the CORESET is implemented in the following manner:

wherein the target value is a first preset constant value; or

Specifically, when the type of the search space is the terminal-specific search space USS, the implementation manner of determining the starting offset value of the terminal at the PDCCH candidate position of the CORESET by the second determining module 502 according to the type of the search space includes one of the following manners:

Further, when the preset parameters include: when the TRP indicates a parameter, the second determining module 502 may implement at least one of the following ways:

It should be noted that, the network device embodiment is a network device corresponding to the above method for determining a location of a physical downlink control channel candidate applied to a network device, and all implementation manners of the above embodiments are applicable to the network device embodiment, and can also achieve the same technical effect.

An embodiment of the present invention further provides a network device, including: the present invention relates to a method for determining a location of a physical downlink control channel candidate applied to a network device, and a computer program stored in a memory and operable on a processor, where the computer program, when executed by the processor, implements each process in the above-described embodiment of the method for determining a location of a physical downlink control channel candidate applied to a network device, and can achieve the same technical effect, and is not described herein again to avoid repetition.

Fig. 6 is a structural diagram of a network device according to an embodiment of the present invention, which can implement details of the above-mentioned method for determining a location of a pdcch candidate and achieve the same effect. As shown in fig. 6, the network device 600 includes: a processor 601, a transceiver 602, a memory 603, and a bus interface, wherein:

the processor 601, configured to read the program in the memory 603, executes the following processes:

receiving, by the transceiver 602, terminal capability information sent by a terminal, where the terminal capability information includes: whether the terminal supports the capability of controlling the resource sets CORESET with more than the preset number and/or whether the terminal supports the capability of receiving TRP by at least two sending and receiving points;

In fig. 6, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 601 and various circuits of memory represented by memory 603 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 602 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

Optionally, the processor 601, configured to read the program in the memory 603, executes the following processes:

wherein the preset rule comprises at least one of the following modes:

Optionally, the processor 601, configured to read the program in the memory 603, performs at least one of the following procedures:

Optionally, when the preset parameters include: when the identity information of the CORESET is received, the processor 601 is configured to read the program in the memory 603, and perform the following processes:

wherein the preset rule comprises at least one of the following modes:

Optionally, when the preset parameters include: when the configuration indication TCI is transmitted, the processor 601, configured to read the program in the memory 603, performs the following processes:

wherein the preset rule comprises at least one of the following modes:

Further, when the type of the search space is the common search space CSS, the processor 601, configured to read the program in the memory 603, performs the following process:

wherein the target value is a first preset constant value; or

Further, when the type of the search space is the terminal-specific search space USS, the processor 601, configured to read the program in the memory 603, performs one of the following procedures:

Optionally, when the preset parameters include: when the TRP indicates a parameter, the processor 601, configured to read the program in the memory 603, performs at least one of the following processes:

The network device may be a Base Transceiver Station (BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB, eNodeB) in LTE, a relay Station, an Access point, or a Base Station in a future 5G network, and the like, which is not limited herein.

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 executed by a processor, the computer program implements each process of the embodiment of the method for determining a location of a physical downlink control channel candidate applied to a network device side, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A method for determining a position of a physical downlink control channel candidate is applied to a terminal, and is characterized by comprising the following steps:

determining the position of a PDCCH candidate in the search space of each CORESET according to the starting offset value;

the preset number is the number of most support configured CORESET of each bandwidth part BWP; or

The preset number is equal to the product of the number of the BWPs supported by the terminal and the number of CORESET configured by the most supported BWPs.

2. The method of claim 1, wherein the number of most supporting configured CORESET per BWP is equal to 3.

3. The method of claim 1, wherein the obtaining a starting offset value of a PDCCH candidate position in a search space of each CORESET comprises:

wherein the preset rule comprises at least one of the following modes:

4. The method of claim 1, wherein the obtaining a starting offset value of a PDCCH candidate position in a search space of each CORESET comprises:

5. The method of claim 4, wherein the determining a starting offset value of the PDCCH candidate position in the search space of each CORESET according to the configuration information comprises at least one of the following methods:

6. The method of claim 5, wherein different first pseudo random number seeds are distinguished by different identification information indicated by RRC signaling.

7. The method of claim 4, wherein when the configuration information includes: when the information of the CORESET identifiers is obtained, the determining the starting offset value of the PDCCH candidate position in the search space of each CORESET according to the configuration information includes:

wherein the preset rule comprises at least one of the following modes:

8. The method of claim 4, wherein when the configuration information includes: when the information of the CORESET identifiers is obtained, the determining the starting offset value of the PDCCH candidate position in the search space of each CORESET according to the configuration information includes:

9. The method according to claim 7 or 8, wherein the first preset value is a number of most supported and configured CORESET for each bandwidth part BWP; or

The first preset value is equal to the product of the number of the BWPs supported by the terminal and the number of CORESET configured by the most supports of each BWP;

wherein the number of most supporting configured CORESET per bandwidth part BWP is equal to 3.

10. The method of claim 4, wherein when the configuration information includes: when the configuration indication TCI is transmitted, the determining, according to the configuration information, a starting offset value of a PDCCH candidate position in a search space of each CORESET includes:

wherein the preset rule comprises at least one of the following modes:

11. The method of claim 4, wherein when the configuration information includes: when the configuration indication TCI is transmitted, the determining, according to the configuration information, a starting offset value of a PDCCH candidate position in a search space of each CORESET includes:

12. The method of claim 8 or 11, wherein when the type of the search space is a common search space CSS, the determining a starting offset value of a PDCCH candidate position of CORESET according to the type of the search space comprises:

wherein the target value is a first preset constant value; or

13. The method of claim 8 or 11, wherein when the type of the search space is the terminal-specific search space USS, the determining the starting offset value of the PDCCH candidate position of CORESET according to the type of the search space comprises one of the following methods:

14. The method of claim 4, wherein when the configuration information includes: when the TRP indicates a parameter, determining a starting offset value of a PDCCH candidate position in a search space of each CORESET according to the configuration information includes at least one of the following ways:

15. A method for determining a position of a physical downlink control channel candidate is applied to a network device, and is characterized by comprising the following steps:

determining the position of the PDCCH candidate of the terminal in the search space of each CORESET according to the starting offset value;

the preset number is the number of most support configured CORESET of each bandwidth part BWP of the terminal; or

The preset number is equal to the product of the number of the BWPs supported by the terminal and the number of CORESET configured by the most supported BWPs of the terminal.

16. The method of claim 15, wherein the number of most supporting configured CORESET per BWP is equal to 3.

17. The method of claim 15, wherein the determining a starting offset value of the PDCCH candidate position of the physical downlink control channel in the search space of each CORESET by the terminal comprises:

wherein the preset rule comprises at least one of the following modes:

18. The method of claim 15, wherein the determining the starting offset value of the PDCCH candidate position of the physical downlink control channel in the search space of each CORESET comprises at least one of the following manners:

19. The method of claim 18, wherein different first pseudo random number seeds are distinguished by different identification information.

20. The method of claim 15, wherein the determining a starting offset value of the PDCCH candidate position of the physical downlink control channel in the search space of each CORESET by the terminal comprises:

21. The method of claim 20, wherein when the preset parameter includes: when the information of the CORESET identifiers is obtained, the determining the starting offset value of the PDCCH candidate position of the terminal in the search space of each CORESET comprises the following steps:

wherein the preset rule comprises at least one of the following modes:

22. The method of claim 20, wherein when the preset parameter includes: when the information of the CORESET identifiers is obtained, the determining the starting offset value of the PDCCH candidate position of the terminal in the search space of each CORESET comprises the following steps:

23. The method according to claim 21 or 22, wherein the first preset value is a number of most supported and configured CORESET for each bandwidth part BWP; or

24. The method of claim 20, wherein when the preset parameter includes: when the transmission configuration indicates TCI, the determining a starting offset value of a PDCCH candidate position of the terminal in a search space of each CORESET comprises the following steps:

wherein the preset rule comprises at least one of the following modes:

25. The method of claim 20, wherein when the preset parameter includes: when the transmission configuration indicates TCI, the determining a starting offset value of a PDCCH candidate position of the terminal in a search space of each CORESET comprises the following steps:

26. The method of claim 22 or 25, wherein when the type of the search space is a common search space CSS, the determining a starting offset value of the terminal at the PDCCH candidate position of CORESET according to the type of the search space comprises:

wherein the target value is a first preset constant value; or

27. The method of claim 22 or 25, wherein when the type of the search space is a terminal-specific search space USS, the determining a starting offset value of the terminal at the PDCCH candidate position of CORESET according to the type of the search space comprises one of the following manners:

28. The method of claim 20, wherein when the preset parameter includes: when the TRP indicates the parameter, the determining of the starting offset value of the PDCCH candidate position of the terminal in the search space of each CORESET comprises at least one of the following modes:

29. A terminal, comprising:

a first determining module, configured to determine, according to the starting offset value, a position of a PDCCH candidate in a search space of each CORESET;

30. A terminal, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method for determining a position of a physical downlink control channel candidate according to any one of claims 1 to 14.

31. A network device, comprising:

a third determining module, configured to determine, according to the starting offset value, a position of a PDCCH candidate in a search space of each CORESET for the terminal;

32. A network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method for determining a position of a physical downlink control channel candidate according to any one of claims 15 to 28.

33. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for determining a location of a physical downlink control channel candidate according to any one of claims 1 to 28.