CN111278004B - Location determination method, terminal, medium and network device for physical downlink control channel candidates - Google Patents

Abstract

The present invention provides a method, terminal and network device for determining the position of a physical downlink control channel candidate, and relates to the technical field of communications. The method for determining the location of a physical downlink control channel candidate, applied to a terminal, includes: sending terminal capability information to a network device, where the terminal capability information includes: whether the terminal supports more than a preset number of CORESET capabilities and/or supports at least at least Two TRP reception capabilities; obtain the starting offset value of the PDCCH candidate position in the search space of each CORESET; determine the position of the PDCCH candidate in the search space of each CORESET according to the starting offset value. The above solution can reduce the probability that the search spaces of different terminals collide with each other in different CORESETs, reduce the probability of PDCCH blocking of the terminals, and thus ensure communication reliability.

Description

Location determination method, terminal, medium and network device for physical downlink control channel candidates

technical field

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

Background technique

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

However, an increase in the number of CORESETs will increase the probability that the search spaces of different UEs collide with each other in different CORESETs, resulting in an increased probability of PDCCH blocking of the UE. The PDCCH candidates of different UEs can 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 in a BWP. When the number of CORESETs is greater than 3, the problem of multiple CORESETs using the same pseudo-random numbers cannot be avoided.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a method, terminal, and network device for determining the location of a physical downlink control channel candidate, so as to solve the problem that the existing Rel-15 NR system only supports independent pseudo-random numbers between a maximum of 3 CORESETs in one BWP. When the number of CORESETs in a BWP is greater than 3, multiple CORESETs will use the same pseudo-random number, which will increase the probability that the search spaces of different terminals collide with each other in different CORESETs, resulting in an increased probability of PDCCH blocking of the terminal. Communication reliability cannot be guaranteed.

In order to solve the above-mentioned technical problems, the present invention adopts the following ways to realize:

In a first aspect, an embodiment of the present invention provides a method for determining the location of a physical downlink control channel candidate, which is applied to a terminal, including:

Sending terminal capability information to the network device, where the terminal capability information includes: whether the terminal supports the capability of the control resource set CORESET exceeding the preset number and/or whether it supports the capability of at least two sending and receiving points TRP receiving;

Obtain the starting offset value of the physical downlink control channel PDCCH candidate position in the search space of each CORESET;

According to the starting offset value, the position of the PDCCH candidate in the search space of each CORESET is determined.

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

receiving terminal capability information sent by the terminal, where the terminal capability information includes: whether the terminal supports the capability of the control resource set CORESET exceeding the preset number and/or whether it supports the capability of at least two sending and receiving points to receive TRP;

determining the starting offset value of the physical downlink control channel PDCCH candidate position of the terminal in the search space of each CORESET;

According to the starting offset value, the position of the PDCCH candidate of the terminal in the search space of each CORESET is determined.

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 the control resource set CORESET exceeding a preset number and/or whether it supports the capability of receiving at least two sending and receiving points TRP ;

The first acquisition module is used to acquire the starting offset value of the physical downlink control channel PDCCH candidate position in the search space of each CORESET;

The first determining module is configured to determine 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 in the memory and running on the processor, the computer program being executed by the processor to implement the above physical The steps of a method for determining the location of a downlink control channel candidate.

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 the terminal, where the terminal capability information includes: whether the terminal supports the capability of the control resource set CORESET exceeding a preset number and/or whether it supports the capability of at least two sending and receiving points to receive TRP ;

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

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

In a sixth aspect, an embodiment of the present invention provides a network device, including: a memory, a processor, and a computer program stored in the memory and running on the processor, the computer program being executed by the processor to implement the above-mentioned The steps of a method for determining the location of a physical downlink control channel candidate.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the above-mentioned physical downlink control channel is implemented Candidate location determination method steps.

The beneficial effects of the present invention are:

In the above scheme, the determination of the position of the PDCCH candidate in the search space of each CORESET is carried out by exceeding the ability of the control resource set CORESET of the preset number and/or the ability to support at least two transmission and reception points TRP reception. , reducing the probability that the search spaces of different terminals collide with each other in different CORESETs, reducing the probability of PDCCH blocking of the terminals, thereby ensuring communication reliability.

Description of drawings

FIG. 1 shows one of the schematic flowcharts of a method for determining the location of a physical downlink control channel candidate according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a module of a terminal according to an embodiment of the present invention;

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

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

5 is a schematic diagram of a module of a network device according to an embodiment of the present invention;

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

Detailed ways

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

When describing the embodiments of the present invention, some concepts used in the following description are first explained.

The fifth-generation (5Generation, 5G) New Radio (NR) system of Rel-15 supports flexible physical downlink control channel (Physical Download Control Channel, PDCCH) resource allocation, instead of multiplexing the same PDCCH for the entire cell , but a control resource set (Control resource set, CORESET) may be independently configured for each user equipment (User Equipment, UE) for monitoring the PDCCH. CORESET contains independent time domain, frequency domain and spatial domain resource configuration information. At the same time, the 5G NR system supports configuring multiple search space sets for the UE, and flexibly configures the number of blind detections for each search space. The CORESET and search space sets can be flexibly associated. Each CORESET may be associated with multiple search space sets, and the resources of CORESETs of different UEs may partially or fully overlap.

In 3GPP Rel-16, the scenario of multi-TRP/multi-panel is proposed. Multi-Transmission and Reception Point (TRP) transmission can increase the reliability and throughput performance of transmission. For example, the UE may receive the same data or different data from multiple TRPs. Several multi-TRP transmission scenarios are initially discussed:

1), multi-antenna panel transmission in the same TRP;

2), multi-TRP/panel transmission between multi-TRP, ideal backhaul line (backhaul);

3), multi-TRP/panel transmission between multi-TRP, non-ideal backhaul line.

The transmission scheme of multiple TRPs may be:

A1. Multiple TRPs send multiple PDCCHs, multiple PDSCHs, and each TRP sends one PDCCH and one PDSCH;

A2. Multiple PDSCHs transmit the same transmission block (Transmission Block, TB);

A3. Multiple PDSCHs transmit different TBs.

Aiming at the existing Rel-15 NR system, the present invention only supports independent pseudo-random numbers among a maximum of 3 CORESETs in a BWP. When the number of CORESETs in a BWP is greater than 3, multiple CORESETs will use the same pseudo-random number, so that It will increase the probability that the search spaces of different terminals collide with each other in different CORESETs, which will increase the probability of PDCCH blocking of the terminals, and the problem that communication reliability cannot be guaranteed. A method for determining the location of a physical downlink control channel candidate is provided, Terminals and network equipment.

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

Step 101, sending terminal capability information to a network device;

It should be noted that the terminal capability information includes: whether the terminal supports the capability of exceeding a preset number of control resource sets (CORESET) and/or whether it supports the capability of receiving at least two transmission reception points (TRPs);

Specifically, the preset number may be the number of CORESETs that each bandwidth part (BWP) supports at most; or, the preset number is equal to the number of BWPs supported by the terminal and the CORESETs that each BWP supports at most The product of the number of CORESETs, specifically, the number of CORESETs that each BWP supports at most is 3.

It should also be noted that whether the terminal supports the capability of receiving TRPs at at least two sending and receiving points refers to whether the terminal supports the capability of receiving more than one TRP.

Specifically, the ability of the terminal to receive from a TRP can be embodied in any of the following ways, including but not limited to:

Mode 1: The terminal receives data associated with one or a group of target transmission configuration indications (TCIs);

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

In this case, whether the terminal supports the ability to receive more than one TRP refers to whether the terminal supports receiving data associated with more than one or more than one set of target TCIs.

Mode 2: The terminal receives data associated with one or a group of target standard co-location (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, whether the terminal supports the ability to receive more than one TRP refers to whether the terminal supports receiving data associated with more than one or more than one set of target QCLs.

Mode 3: The terminal receives data associated with one or a group of beam information;

In this case, whether the terminal supports the ability to receive more than one TRP refers to whether the terminal supports receiving data associated with more than one or more than one set of beam information.

Mode 4: The terminal receives data associated with one or a group of panels;

In this case, whether the terminal supports the ability to receive more than one TRP refers to whether the terminal supports receiving data associated with more than one or more than one group of panels.

Manner 5: The terminal receives data associated with a TCI that does not exceed a predefined number;

In this case, whether the terminal supports the ability to receive more than one TRP refers to whether the terminal supports receiving data associated with more than a predefined number of TCIs.

Manner 6: The terminal receives a control channel using one or a preset number of target scrambling IDs, or the terminal receives a data channel using one or a preset number of target scrambling IDs;

In this case, whether the terminal supports the ability to receive more than one TRP refers to: whether the terminal supports receiving control channels using more than one or more than a preset number of target scrambling IDs; or, whether the terminal supports receiving more than one target scrambling ID. Or data channels with more than a preset number of target scrambling IDs.

Manner 7: The terminal receives a control channel of a demodulation reference signal (DMRS) using one or a preset number of target scrambling IDs, or the terminal receives a DMRS using one or a preset number of target scrambling IDs data channel;

In this case, whether the terminal supports the ability to receive more than one TRP refers to: whether the terminal supports receiving the control channel of DMRS using more than one or more than a preset number of target scrambling IDs; or, whether the terminal supports receiving and using The data channel of the DMRS with more than one or more than a preset number of target scrambling IDs.

Step 102, obtaining the starting offset value of the physical downlink control channel PDCCH candidate position in the 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 requirements rather than the terminal capability information.

Step 103: Determine 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 of step 102 is:

According to a preset rule, determine the starting offset value of the PDCCH candidate position;

Wherein, the preset rule includes at least one of the following ways:

C11, determine that the starting offset value of the PDCCH candidate position in the common search space (CSS) of each CORESET is zero;

It should be noted that in this case, for CSS, the starting offset value is directly set to zero.

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

获取起始偏移值，其中，

是指对于子载波间隔配置为μ时，无线帧中的时隙编号，

为

之前的一个时隙的编号，例如，

是无线帧的第2个时隙，

则是第 1个时隙；

为第p个CORESET在第

个时隙的搜索空间的PDCCH候选位置的起始偏移值；

为第p个CORESET在第

个时隙的搜索空间的 PDCCH候选位置的起始偏移值；A_p为第p个CORESET的伪随机数种子； Y_p,-1＝n_RNTI≠0，当pmod3＝0时，A_p＝39827，当pmod3＝1时，A_p＝39829，当pmod3＝2时，A_p＝39839，且D＝65537；n_RNTI为该终端的无线网络临时标识符(Radio Network TemporyIdentity，RNTI)。In this case, for USS, use Equation 1:

Get the starting offset value, where,

is the slot number in the radio frame when the subcarrier spacing is configured as μ,

for

the number of the previous slot, for example,

is the second time slot of the radio frame,

is the first time slot;

for the pth CORESET at the

The starting offset value of the PDCCH candidate position of the search space of the time slots;

for the pth CORESET at the

The starting offset value of the PDCCH candidate position in the search space of the time slots; A _p is the pseudo-random number seed of the p-th CORESET; Y _p,-1 =n _RNTI ≠0, when pmod3=0, A _p = 39827, when pmod3=1, _Ap =39829, when pmod3=2, _Ap =39839, and D=65537; n _RNTI is the radio network temporary identifier (Radio Network TemporyIdentity, 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 of step 102 is:

The starting offset value of the PDCCH candidate position in the search space of each CORESET is determined according to the configuration information.

It should be noted that the configuration information can explicitly configure the starting offset value of the PDCCH candidate position, and can also implicitly configure the starting offset value of the PDCCH candidate position. The implementation of step 102 is specifically described as follows.

1. Explicit configuration

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

D11. Obtain the radio resource control (RRC) parameter configuration value for CSS configuration in the configuration information, and determine the RRC parameter configuration value as the starting offset value of the PDCCH candidate position in the CSS of CORESET;

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

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

It should be noted that, in this case, the network device carries the pre-defined first pseudo-random number seed in the configuration information. It should be noted that the first pseudo-random number seed for different CORESETs is sent through RRC signaling. Different identification information indicated.

For example, the pre-defined first pseudo-random number seed is: A ₀ =39827, A ₁ =39829, A ₂ =39839, A ₃ =39841, A ₄ =39847, A ₅ =39857, A ₆ =39863; where, The subscripts respectively correspond to the labels of the pseudo-random number seeds, and when the network device sends the first pseudo-random number seeds, the subscripts are carried in the configuration information to save signaling overhead.

It should also be noted that, in this case, the starting offset value of the PDCCH candidate position in the USS of the CORESET can be obtained in the form of the above formula 1, which is not repeated here.

2. Implicit configuration

1. The configuration information includes: CORESET identification information

1.1. Optionally, in this case, if the identity information of the CORESET is less than the first preset value, the starting offset value of the PDCCH candidate position is determined according to the preset rule;

It should be noted that the first preset value is the number of CORESETs that each BWP supports at most; or, the first preset value is equal to the number of BWPs supported by the terminal and the number of CORESETs that each BWP supports at most. The product of the number of CORESETs, wherein the number of CORESETs that each BWP supports at most is equal to 3.

Specifically, the preset rules include at least one of the following methods:

D21. Determine that the starting offset value of the PDCCH candidate position in the CSS of each CORESET is zero;

It should be noted that this manner is the same as the implementation manner of C11, which is not repeated here.

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

It should be noted that this method is the same as the implementation method of C12, and will not be repeated here.

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

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

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

It should be noted that the target value may be a first preset constant value, and the first preset constant value is specified by a protocol or notified by a network device.

The target value may also be determined according to at least one of the number of control channel elements (CCEs) in the CORESET, the number of TRPs, the carrier indication field value, the aggregation level, and the identification information of the transmission configuration indication (TCI); for example, Target value=Number of CCEs in CORESET*t/(T*aggregation level), T is the number of TRPs or the number of TCI packets, t is the number of the target TRP or TCI packets, especially, when T is 2 , target value=floor{number of CCEs in CORESET/(T*aggregation level)}; or, target value=aggregation level*t.

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

D31. Determine the 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 CORESET is smaller than the preset number.

For example, redefine a new pseudo-random number seed, and select a pseudo-random number seed that is different from that when the CORESET identification information is smaller than the first preset value, for example, when pmod3=0, A _p =39841, when pmod3=1, A _p =39847, when pmod3=2, A _p =39857.

It should also be noted that, in this case, the starting offset value of the PDCCH candidate position in the USS of the CORESET can be obtained in the form of the above formula 1, which is not repeated here.

D32. Determine the starting offset value of the PDCCH candidate position of the CORESET according to the first target offset and the 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 based on the number of CCEs, the number of TRPs, the carrier indication field value, the aggregation level in the CORESET and at least one item in the identification information of the TCI, for example, the first target offset=number of CCEs in CORESET*t/(T*aggregation level), where T is the number of TRPs or the number of TCI packets, t is the number of the target TRP or TCI group, in particular, when T is 2, the first target offset=floor{number of CCEs in CORESET/(T*aggregation level)}; or, target value=aggregation level*t. It should also be noted that the preset pseudo-random number seed may be the same as or different from the existing pseudo-random number seed corresponding to when the identification information of CORESET is less than the preset number.

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

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

获取起始偏移值，其中，

是指对于子载波间隔配置为μ时，无线帧中的时隙编号，

为

之前的一个时隙的编号，例如，

是无线帧的第2个时隙，

则是第1个时隙；

为第p 个CORESET在第

个时隙的搜索空间的PDCCH候选位置的起始偏移值；

为第p个CORESET在第

个时隙的搜索空间的PDCCH候选位置的起始偏移值；A_p为第p个CORESET的伪随机数种子；例如，Y_p,-1＝n_RNTI≠0，当pmod3＝0 时，A_p＝39827，当pmod3＝1时，A_p＝39829，当pmod3＝2时，A_p＝39839，且D＝65537； n_RNTI为该终端的无线网络临时标识符(Radio Network Tempory Identity，RNTI)； O为第一目标偏移量。Use formula two:

Get the starting offset value, where,

is the slot number in the radio frame when the subcarrier spacing is configured as μ,

for

the number of the previous slot, for example,

is the second time slot of the radio frame,

is the first time slot;

for the pth CORESET at the

The starting offset value of the PDCCH candidate position of the search space of the time slots;

for the pth CORESET at the

The starting offset value of the PDCCH candidate position in the search space of the time slots; A _p is the pseudo-random number seed of the p-th CORESET; for example, Y _p,-1 =n _RNTI ≠0, when pmod3=0, A p _p =39827, when pmod3=1, A _p =39829, when pmod3=2, A _p =39839, and D=65537; n _RNTI is the radio network temporary identifier (Radio Network Tempory Identity, RNTI) of the terminal ; O is the first target offset.

D33. Determine a third pseudo-random number seed for obtaining the starting offset value of the PDCCH candidate position of the CORESET according to the number of CORESETs that can be configured at most in each BWP and the identification information of the CORESET, and according to the third pseudo-random number The seed determines the starting offset value of the PDCCH candidate position of CORESET;

It should be noted that, in this case, the maximum number of CORESETs that can be configured in each BWP is greater than 3.

For example, the maximum number of CORESETs that can be configured in each BWP is equal to 6, when pmod6=0, A _p =39827, when pmod6=1, A _p =39829, when pmod6=2, A _p =39839, When pmod6=3, _Ap =39841, when pmod6=4, _Ap =39847, and when pmod6=5, _Ap =39857.

It should also be noted that, in this case, the starting offset value of the PDCCH candidate position in the USS of the CORESET can be obtained in the form of the above formula 1, which is not repeated here.

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

2.1. Optionally, in this case, if the flag information of the TCI is less than the second preset value, determine the starting offset value of the PDCCH candidate position according to the preset rule;

It should be noted that the second preset value is a preset constant stipulated in the protocol.

Specifically, the preset rules include at least one of the following methods:

D31. Determine that the starting offset value of the PDCCH candidate position in the CSS of each CORESET is zero;

It should be noted that this manner is the same as the implementation manner of C11, which is not repeated here.

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

It should be noted that this method is the same as the implementation method of C12, and will not be repeated here.

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

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

3. The configuration information includes: TRP indication parameters

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

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

For example, the third preset constant value=identification information mod M1 of the TRP indication parameter, where M1 is the maximum number of TRPs supported by the terminal.

D42. Determine the 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, when pmod3=0, A _p =39827, when pmod3=1, A _p =39829, when pmod3=2, A _p =39839; When the identification information is one, when pmod3=0, _Ap =39841, when pmod3=1, _Ap =39847, and when pmod3=2, _Ap =39857.

It should be noted that, in this case, the starting offset value of the PDCCH candidate position in the USS of the CORESET can be obtained in the form of the above formula 1, which is not repeated here.

D43. Determine the starting offset value of the PDCCH candidate position in the USS of the 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 the identification information of the TRP indication parameter. The preset pseudo-random number seed may be the same as or different from the existing pseudo-random number seed when the identification information of CORESET is less than the preset number.

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

获取起始偏移值，其中，

是指对于子载波间隔配置为μ时，无线帧中的时隙编号，

为

之前的一个时隙的编号，例如，

是无线帧的第2个时隙，

则是第1个时隙；

为第p 个CORESET在第

个时隙的搜索空间的PDCCH候选位置的起始偏移值；

为第p个CORESET在第

个时隙的搜索空间的PDCCH候选位置的起始偏移值；A_p为第p个CORESET的伪随机数种子；例如，Y_p,-1＝n_RNTI≠0，当pmod3＝0 时，A_p＝39827，当pmod3＝1时，A_p＝39829，当pmod3＝2时，A_p＝39839，且D＝65537； n_RNTI为该终端的无线网络临时标识符(Radio Network Tempory Identity，RNTI)； O1为第二目标偏移量。Use formula three:

Get the starting offset value, where,

is the slot number in the radio frame when the subcarrier spacing is configured as μ,

for

the number of the previous slot, for example,

is the second time slot of the radio frame,

is the first time slot;

for the pth CORESET at the

The starting offset value of the PDCCH candidate position of the search space of the time slots;

for the pth CORESET at the

The starting offset value of the PDCCH candidate position in the search space of the time slots; A _p is the pseudo-random number seed of the p-th CORESET; for example, Y _p,-1 =n _RNTI ≠0, when pmod3=0, A p _p =39827, when pmod3=1, A _p =39829, when pmod3=2, A _p =39839, and D=65537; n _RNTI is the radio network temporary identifier (Radio Network Tempory Identity, RNTI) of 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, specifically The way to do this is:

According to formula four:

Obtain the position of the PDCCH candidate in the search space of each CORESET;

为控制资源集P中的控制信道单元的个数；n_CI为载波指示字段值；L为聚合等级；

为PDCCH候选位置的起始偏移值；

为是控制资源集p中的搜索空间集s中，对应于所有配置的n_CI的服务小区中聚合等级为L 的PDCCH候选的监听个数中的最大值，即对于每个配置的n_CI，有一个M^L，这里的

是所有M^L中的最大值；

为终端被配置监听的搜索空间集s中对应于n_CI的服务小区且聚合等级为L的PDCCH候选的个数；i取值为0至L-1的数。in,

is the number of control channel elements in the control resource set P; n _CI is the carrier indication field value; L is the aggregation level;

is the starting offset value of the PDCCH candidate position;

is the maximum value of the monitoring numbers of PDCCH candidates with aggregation level L in the serving cells corresponding to all configured n _CIs in the search space set s in the control resource set p, that is, for each configured n _CI , There is an M ^L , here

is the maximum value among all ^MLs ;

The number of PDCCH candidates with aggregation level L corresponding to the serving cell of n _CI in the search space set s that the terminal is configured to monitor; 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 capabilities, the configuration information can be fed back to the terminal; if the capabilities of the network device and the terminal do not match, the network device does not provide the terminal The configuration information is fed back, and the terminal determines the initial offset value according to the existing method according to the situation that the configuration information is not received, so as to ensure the forward compatibility.

It should be noted that by assigning different random positions to PDCCH candidates in different CORESETs, the blocking probability between different terminals can be reduced. Application scenarios such as multiple TRP transmission scenarios; on the other hand, the embodiments of the present invention can maintain forward compatibility, that is, when one of the network side or the terminal is an old device that only supports Rel-15 (for example, does not support multiple CORESET or multi-TRP transmission), 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:

The sending module 201 is configured to send terminal capability information to a network device, where the terminal capability information includes: whether the terminal supports the capability of the control resource set CORESET exceeding a preset number and/or whether it supports the information received by at least two sending and receiving points TRP; ability;

The first obtaining module 202 is used to obtain the starting offset value of the physical downlink control channel PDCCH candidate position in the search space of each CORESET;

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

Specifically, the preset number is the number of CORESETs that each bandwidth part BWP supports at most; or

The preset number is equal to the product of the number of BWPs supported by the terminal and the number of CORESETs that each BWP supports at most;

Wherein, the number of CORESETs that each BWP supports at most is equal to 3.

Optionally, the first obtaining module 202 is used for:

If the configuration information sent by the network device is not received, determine the starting offset value of the PDCCH candidate position according to a preset rule;

Wherein, the preset rule includes at least one of the following ways:

determine that the starting offset value of the PDCCH candidate position in the common search space CSS of each CORESET is zero;

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

Optionally, the first obtaining module 202 is used for:

If the configuration information sent by the network device is received, the starting offset value of the PDCCH candidate position in the search space of each CORESET is determined according to the configuration information.

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

Acquire the radio resource control RRC parameter configuration value configured for the common search space CSS in the configuration information, and determine the RRC parameter configuration value as the starting offset value of the PDCCH candidate position in the CSS of CORESET;

Obtain the first pseudo-random number seed configured for the terminal-specific search space USS in the configuration information, and determine the starting offset value of the PDCCH candidate position in the USS of the 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: the identification information of CORESET, the first obtaining module 202 is used for:

If the identification information of the CORESET is less than the first preset value, determine the starting offset value of the PDCCH candidate position according to the preset rule;

Wherein, the preset rule includes at least one of the following ways:

determine that the starting offset value of the PDCCH candidate position in the common search space CSS of each CORESET is zero;

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

Further, when the configuration information includes: the identification information of CORESET, the first obtaining module 202 is used for:

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

Specifically, the first preset value is the number of CORESETs that each BWP supports at most; or

The first preset value is equal to the product of the number of bandwidth part BWPs supported by the terminal and the number of CORESETs that each BWP supports at most;

Wherein, the number of CORESETs that each BWP supports at most is equal to 3.

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

If the flag information of the TCI is less than the second preset value, determine the starting offset value of the PDCCH candidate position according to the preset rule;

Wherein, the preset rule includes at least one of the following ways:

determine that the starting offset value of the PDCCH candidate position in the common search space CSS of each CORESET is zero;

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

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

If the flag information of the TCI is greater than or equal to the second preset value, the starting offset value of the PDCCH candidate position of the CORESET is determined 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 the starting offset value of the PDCCH candidate position of the CORESET according to the type of the search space. The implementation manner is:

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

Wherein, the target value is a first preset constant value; or

The target value is determined according to at least one of the number of CCEs in the CORESET, the number of TRPs, the value of the carrier indication field, the aggregation level, and the identification information of the transmission configuration indication TCI.

Specifically, when the type of the search space is the terminal-specific search space USS, the first obtaining module 202 determines the starting offset value of the PDCCH candidate position of the CORESET according to the type of the search space, including one of the following methods. item:

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

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

According to the maximum number of CORESETs that can be configured in each BWP and the identification information of the CORESET, determine the third pseudo-random number seed for obtaining the starting offset value of the PDCCH candidate position of the CORESET, and determine according to the third pseudo-random number seed The starting offset value of the PDCCH candidate position of CORESET;

Wherein, the second pseudo-random number seed is different from the corresponding pseudo-random number seed when the identification information of CORESET is smaller than the preset number; the first target offset is based on the number of control channel elements CCE in CORESET, TRP At least one of the number of , the carrier indication field value, the aggregation level, and the identification information of the transmission configuration indication TCI is determined, or, the first target offset is a second preset constant value; in each BWP The maximum number of CORESETs that can be configured is greater than 3.

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

The third preset constant value is determined as the starting offset value of the PDCCH candidate position in the common search space CSS of CORESET, and the third preset constant value is determined by the identification information of the TRP indication parameter;

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

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

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

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

The terminal 30 includes but is not limited to: a radio frequency unit 310, a network module 320, an audio output unit 330, an input unit 340, a sensor 350, a display unit 360, a user input unit 370, an interface unit 380, a memory 390, a processor 311, and a power supply 312 and other components. Those skilled in the art can understand that the terminal structure shown in FIG. 3 does not constitute a limitation on the terminal, and the terminal may include more or less components than the one shown, or combine some components, or arrange different 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 palmtop computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

Wherein, the radio frequency unit 310 is configured to send the terminal capability information to the network device, where the terminal capability information includes: whether the terminal supports the capability of the control resource set CORESET exceeding the preset number and/or whether it supports at least two sending and receiving points TRP receiving Ability;

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

According to the starting offset value, the position of the PDCCH candidate in the search space of each CORESET is determined.

The terminal according to the embodiment of the present invention performs a search of PDCCH candidates in the search space of each CORESET under the condition that the capability of the control resource set CORESET exceeds the preset number and/or the capability of supporting at least two transmission and reception points TRP reception. The determination of the position reduces the probability that the search spaces of different terminals collide with each other in different CORESETs, reduces the PDCCH blocking probability of the terminal, and thus ensures the reliability of communication.

It should be understood that, in this embodiment of the present invention, the radio frequency unit 310 may be used for receiving and sending signals during sending and receiving of information or during a call. Specifically, after receiving the downlink data from the network device, it is processed by the processor 311; in addition, Send the upstream data to the network device. Typically, the 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 frequency unit 310 can also communicate with the 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 to send and receive emails, browse web pages, and access streaming media.

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 audio signals 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 (eg, call signal reception sound, 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 audio or video signals. The input unit 340 may include a graphics processor (Graphics Processing Unit, GPU) 341 and a microphone 342, and the graphics processor 341 captures still pictures or video images obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode data is processed. The processed image frame may be displayed on the display unit 360 . The image frames processed by the graphics 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 can receive sound and can process such sound into audio data. The processed audio data can be converted into a format that can be transmitted to a mobile communication network device via the radio frequency unit 310 for output in the case of a telephone call mode.

The terminal 30 also includes at least one sensor 350, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 361 according to the brightness of the ambient light, and the proximity sensor can close the display panel 361 and/or when the terminal 30 is moved to the ear. or backlight. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can 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, The sensor 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 ray, etc. Sensors, etc., will not be repeated here.

The display unit 360 is used to display information input by the 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 numerical or character information, and generate key signal input 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 . The touch panel 371, also referred to as a touch screen, can collect touch operations by the user on or near it (such as the user's finger, stylus, etc., any suitable object or accessory on or near the touch panel 371). operate). The touch panel 371 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it to the touch controller. To the processor 311, the command sent by the processor 311 is received and executed. In addition, the touch panel 371 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 371 , the user input unit 370 may also include other input devices 372 . Specifically, other input devices 372 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which are not described herein again.

Further, the touch panel 371 can be covered on the display panel 361. When the touch panel 371 detects a touch operation on or near it, it transmits it to the processor 311 to determine the type of the touch event, and then the processor 311 determines the type of the touch event according to the touch The type of event provides a corresponding visual output on the display panel 361 . Although in FIG. 3, the touch panel 371 and the display panel 361 are used as two independent components to realize the input and output functions of the terminal, in some embodiments, the touch panel 371 and the display panel 361 can be integrated to Realize the input and output functions of the terminal, which is not limited here.

The interface unit 380 is an interface for connecting an external device to the terminal 30 . For example, external devices may include wired or wireless headset ports, external power (or battery charger) ports, wired or wireless data ports, memory card ports, ports for connecting devices with identification modules, audio input/output (I/O) ports, video I/O ports, headphone ports, and more. The interface unit 380 may be used to receive input (eg, data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal 30 or may be used to communicate between the terminal 30 and the external device. transfer data between.

The memory 390 may be used to store software programs as well as various data. The memory 390 may mainly include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program (such as a sound playback function, an image playback function, etc.) required for at least one function, etc.; Data created by the use of the mobile phone (such as audio data, phone book, etc.), etc. Additionally, 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 the control center of the terminal, and uses various interfaces and lines to connect various parts of the entire terminal, by running or executing the software programs and/or modules stored in the memory 390, and calling the data stored in the memory 390, executing. Various functions of the terminal and processing data, so as to monitor the terminal as a whole. The processor 311 may include one or more processing units; preferably, the processor 311 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, etc., and the modem The processor mainly handles wireless communication. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 311 .

The terminal 30 may also include a power supply 312 (such as a battery) for supplying power to various components. Preferably, the power supply 312 may be logically connected to the processor 311 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. Function.

In addition, the terminal 30 includes some unshown functional modules, which are not repeated here.

Preferably, an embodiment of the present invention further provides a terminal, including a processor 311, a memory 390, a computer program stored in the memory 390 and running on the processor 311, and the computer program is implemented when the processor 311 executes it. The processes of the embodiments of the method for determining the position of the physical downlink control channel candidate applied to the terminal side can achieve the same technical effect. To avoid repetition, details are not repeated here.

Embodiments of the present invention further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, an embodiment of a method for determining the location of a physical downlink control channel candidate applied to the terminal side is implemented. and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk, or an optical disk.

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

Step 401, receiving terminal capability information sent by the terminal;

It should be noted that the terminal capability information includes: whether the terminal supports the capability of the control resource set CORESET exceeding the preset number and/or whether it supports the capability of at least two sending and receiving points to receive TRP;

Specifically, the preset number is the number of CORESETs that each BWP of the terminal supports at most; or

The preset number is equal to the product of the number of bandwidth part BWPs supported by the terminal and the number of CORESETs that each BWP of the terminal supports at most, where each BWP supports at most the number of CORESETs that are configured. The number is equal to 3.

Step 402, determining the starting offset value of the physical downlink control channel PDCCH candidate position of the terminal in the search space of each CORESET;

Step 403: Determine 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 can send the PDCCH resource according to the position of the PDCCH candidate.

It should also be 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, and then obtains position of the PDCCH candidate in the search space of each CORESET, and receive the PDCCH at the corresponding position.

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

Then according to the preset rule, determine the starting offset value of the PDCCH candidate position;

Wherein, the preset rule includes at least one of the following ways:

Determine that the starting offset value of the PDCCH candidate position of the terminal in the common search space CSS of each CORESET is zero;

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

Optionally, the determining the starting offset value of the physical downlink control channel PDCCH candidate position of the terminal in the search space of each CORESET includes at least one of the following manners:

Obtaining the radio resource control RRC parameter configuration value configured for the common search space CSS, and determining the RRC parameter configuration value as the starting offset value of the PDCCH candidate position of the terminal in the CSS of the CORESET;

A first pseudo-random number seed configured for the terminal-specific search space USS is obtained, and according to the first pseudo-random number seed, the starting offset value of the PDCCH candidate position of the terminal in the USS of the CORESET is determined.

Specifically, different first pseudo-random number seeds are distinguished by different identification information.

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

According to preset parameters, determine the starting offset value of the PDCCH candidate position of the terminal in the search space of each CORESET;

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

Further, when the preset parameter includes: CORESET identification information, the determining the starting offset value of the PDCCH candidate position of the terminal in the search space of each CORESET includes:

If the identification information of the CORESET is less than the first preset value, determine the starting offset value of the PDCCH candidate position according to the preset rule;

Wherein, the preset rule includes at least one of the following ways:

determine that the starting offset value of the PDCCH candidate position in the common search space CSS of each CORESET is zero;

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

Further, when the preset parameter includes: CORESET identification information, the determining the starting offset value of the PDCCH candidate position of the terminal in the search space of each CORESET includes:

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

It should be noted that the first preset value is the number of CORESETs that each BWP supports at most; or

The first preset value is equal to the product of the number of bandwidth part BWPs supported by the terminal and the number of CORESETs that each BWP supports at most;

Wherein, the number of CORESETs that each BWP supports at most is equal to 3.

Further, when the preset parameter includes: the transmission configuration indicates TCI, the determining the starting offset value of the PDCCH candidate position of the terminal in the search space of each CORESET includes:

If the flag information of the TCI is less than the second preset value, determine the starting offset value of the PDCCH candidate position according to the preset rule;

Wherein, the preset rule includes at least one of the following ways:

Determine that the starting offset value of the PDCCH candidate position of the terminal in the common search space CSS of each CORESET is zero;

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

Further, when the preset parameter includes: the transmission configuration indicates TCI, the determining the starting offset value of the PDCCH candidate position of the terminal in the search space of each CORESET includes:

If the flag information of the TCI is greater than or equal to the second preset value, the starting offset value of the terminal in the PDCCH candidate position of the CORESET is determined according to the type of the search space.

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

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

Wherein, the target value is a first preset constant value; or

The target value is determined according to at least one of the number of CCEs in the CORESET, the number of TRPs, the value of the carrier indication field, the aggregation level, and the identification information of the transmission configuration indication TCI.

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

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

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

Determine the third pseudo-random number seed for obtaining the starting offset value of the terminal at the PDCCH candidate position of the CORESET according to the number of CORESETs that can be configured at most in each BWP and the identification information of the CORESET, according to the third pseudo-random number seed. The random number seed determines the starting offset value of the terminal in the PDCCH candidate position of the CORESET;

Wherein, the second pseudo-random number seed is different from the corresponding pseudo-random number seed when the identification information of CORESET is smaller than the preset number; the first target offset is based on the number of control channel elements CCE in CORESET, TRP At least one of the number of , the carrier indication field value, the aggregation level, and the identification information of the transmission configuration indication TCI is determined, or, the first target offset is a second preset constant value; in each BWP The maximum number of CORESETs that can be configured is greater than 3.

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

The third preset constant value is determined as the starting offset value of the PDCCH candidate position of the terminal in the common search space CSS of CORESET, and the third preset constant value is determined by the identification information of the TRP indication parameter;

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

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

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

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

In this embodiment of the present invention, when the terminal exceeds the capability of the CORESET of the preset number of control resource sets and/or supports the capability of at least two transmission and reception points to receive TRP, the PDCCH candidates in the search space of each CORESET are selected. The determination of the position reduces the probability that the search spaces of different terminals collide with each other in different CORESETs, reduces the PDCCH blocking probability of the terminal, and thus ensures the reliability of communication.

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

The receiving module 501 is configured to receive terminal capability information sent by the terminal, where the terminal capability information includes: whether the terminal supports the capability of the control resource set CORESET exceeding a preset number and/or whether it supports the ability of at least two sending and receiving points to receive TRP; ability;

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

The third determining module 503 is configured to determine the position of the PDCCH candidate of the terminal in the search space of each CORESET according to the starting offset value.

Specifically, the preset number is the number of CORESETs that each BWP of the terminal supports at most; or

The preset number is equal to the product of the number of bandwidth part BWPs supported by the terminal and the number of CORESETs that each BWP of the terminal supports at most;

Wherein, the number of CORESETs that each BWP supports at most is equal to 3.

Optionally, the second determining module 502 is configured to:

Then according to the preset rule, determine the starting offset value of the PDCCH candidate position;

Wherein, the preset rule includes at least one of the following ways:

Determine that the starting offset value of the PDCCH candidate position of the terminal in the common search space CSS of each CORESET is zero;

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

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

Obtaining the radio resource control RRC parameter configuration value configured for the common search space CSS, and determining the RRC parameter configuration value as the starting offset value of the PDCCH candidate position of the terminal in the CSS of the CORESET;

A first pseudo-random number seed configured for the terminal-specific search space USS is obtained, and according to the first pseudo-random number seed, the starting offset value of the PDCCH candidate position of the terminal in the USS of the CORESET is determined.

Specifically, different first pseudo-random number seeds are distinguished by different identification information.

Optionally, the second determining module 502 is configured to:

According to preset parameters, determine the starting offset value of the PDCCH candidate position of the terminal in the search space of each CORESET;

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

Further, when the preset parameter includes: the identification information of CORESET, the second determination module 502 is used for:

If the identification information of the CORESET is less than the first preset value, determine the starting offset value of the PDCCH candidate position according to the preset rule;

Wherein, the preset rule includes at least one of the following ways:

determine that the starting offset value of the PDCCH candidate position in the common search space CSS of each CORESET is zero;

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

Further, when the preset parameter includes: the identification information of CORESET, the second determination module 502 is used for:

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

Specifically, the first preset value is the number of CORESETs that each BWP supports at most; or

The first preset value is equal to the product of the number of bandwidth part BWPs supported by the terminal and the number of CORESETs that each BWP supports at most;

Wherein, the number of CORESETs that each BWP supports at most is equal to 3.

Further, when the preset parameter includes: a transmission configuration indication TCI, the second determining module 502 is configured to:

If the flag information of the TCI is less than the second preset value, determine the starting offset value of the PDCCH candidate position according to the preset rule;

Wherein, the preset rule includes at least one of the following ways:

Determine that the starting offset value of the PDCCH candidate position of the terminal in the common search space CSS of each CORESET is zero;

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

Further, when the preset parameter includes: a transmission configuration indication TCI, the second determining module 502 is configured to:

If the flag information of the TCI is greater than or equal to the second preset value, the starting offset value of the terminal in the PDCCH candidate position of the CORESET is determined according to the type of the search space.

Specifically, when the type of the search space is the common search space CSS, the second determining module 502 determines the starting offset value of the terminal at the PDCCH candidate position of the CORESET according to the type of the search space. The implementation manner is:

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

Wherein, the target value is a first preset constant value; or

The target value is determined according to at least one of the number of CCEs in the CORESET, the number of TRPs, the value of the carrier indication field, the aggregation level, and the identification information of the transmission configuration indication TCI.

Specifically, when the type of the search space is the terminal-specific search space USS, the second determining module 502 determines the starting offset value of the terminal at the PDCCH candidate position of the CORESET according to the type of the search space, including the following: One of the ways:

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

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

Determine the third pseudo-random number seed for obtaining the starting offset value of the terminal at the PDCCH candidate position of the CORESET according to the number of CORESETs that can be configured at most in each BWP and the identification information of the CORESET, according to the third pseudo-random number seed. The random number seed determines the starting offset value of the terminal in the PDCCH candidate position of the CORESET;

Wherein, the second pseudo-random number seed is different from the corresponding pseudo-random number seed when the identification information of CORESET is smaller than the preset number; the first target offset is based on the number of control channel elements CCE in CORESET, TRP At least one of the number of , the carrier indication field value, the aggregation level, and the identification information of the transmission configuration indication TCI is determined, or, the first target offset is a second preset constant value; in each BWP The maximum number of CORESETs that can be configured is greater than 3.

Further, when the preset parameters include: TRP indication parameters, the second determination module 502 implements at least one of the following modes:

The third preset constant value is determined as the starting offset value of the PDCCH candidate position of the terminal in the common search space CSS of CORESET, and the third preset constant value is determined by the identification information of the TRP indication parameter;

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

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

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

An embodiment of the present invention further provides a network device, including: a memory, a processor, and a computer program stored in the memory and running on the processor, the computer program being executed by the processor to implement the above-mentioned application to the network The various processes in the embodiments of the method for determining the location of the physical downlink control channel candidate of the device can achieve the same technical effect, and in order to avoid repetition, they will not be repeated here.

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

The processor 601 is used for reading the program in the memory 603, and performs the following processes:

Receive terminal capability information sent by the terminal through the transceiver 602, where the terminal capability information includes: whether the terminal supports the capability of the control resource set CORESET exceeding the preset number and/or whether it supports the capability of at least two sending and receiving points to receive TRP;

determining the starting offset value of the physical downlink control channel PDCCH candidate position of the terminal in the search space of each CORESET;

According to the starting offset value, the position of the PDCCH candidate of the terminal in the search space of each CORESET is determined.

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

Specifically, the preset number is the number of CORESETs that each BWP of the terminal supports at most; or

The preset number is equal to the product of the number of bandwidth part BWPs supported by the terminal and the number of CORESETs that each BWP of the terminal supports at most;

Wherein, the number of CORESETs that each BWP supports at most is equal to 3.

Optionally, the processor 601, for reading the program in the memory 603, performs the following processes:

Then according to the preset rule, determine the starting offset value of the PDCCH candidate position;

Wherein, the preset rule includes at least one of the following ways:

Determine that the starting offset value of the PDCCH candidate position of the terminal in the common search space CSS of each CORESET is zero;

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

Optionally, the processor 601 is configured to read the program in the memory 603, and execute at least one of the following processes:

Obtaining the radio resource control RRC parameter configuration value configured for the common search space CSS, and determining the RRC parameter configuration value as the starting offset value of the PDCCH candidate position of the terminal in the CSS of the CORESET;

A first pseudo-random number seed configured for the terminal-specific search space USS is obtained, and according to the first pseudo-random number seed, the starting offset value of the PDCCH candidate position of the terminal in the USS of the CORESET is determined.

Specifically, different first pseudo-random number seeds are distinguished by different identification information.

Optionally, the processor 601, for reading the program in the memory 603, performs the following processes:

According to preset parameters, determine the starting offset value of the PDCCH candidate position of the terminal in the search space of each CORESET;

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

Optionally, when the preset parameters include: the identification information of CORESET, the processor 601 is used to read the program in the memory 603, and execute the following process:

If the identification information of the CORESET is less than the first preset value, determine the starting offset value of the PDCCH candidate position according to the preset rule;

Wherein, the preset rule includes at least one of the following ways:

determine that the starting offset value of the PDCCH candidate position in the common search space CSS of each CORESET is zero;

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

Optionally, when the preset parameters include: the identification information of CORESET, the processor 601 is used to read the program in the memory 603, and execute the following process:

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

Specifically, the first preset value is the number of CORESETs that each BWP supports at most; or

The first preset value is equal to the product of the number of bandwidth part BWPs supported by the terminal and the number of CORESETs that each BWP supports at most;

Wherein, the number of CORESETs that each BWP supports at most is equal to 3.

Optionally, when the preset parameters include: when the transmission configuration indicates TCI, the processor 601 is configured to read the program in the memory 603, and perform the following process:

If the flag information of the TCI is less than the second preset value, determine the starting offset value of the PDCCH candidate position according to the preset rule;

Wherein, the preset rule includes at least one of the following ways:

Determine that the starting offset value of the PDCCH candidate position of the terminal in the common search space CSS of each CORESET is zero;

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

Optionally, when the preset parameters include: when the transmission configuration indicates TCI, the processor 601 is configured to read the program in the memory 603, and perform the following process:

If the flag information of the TCI is greater than or equal to the second preset value, the starting offset value of the terminal in the PDCCH candidate position of the CORESET is determined according to the type of the search space.

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:

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

Wherein, the target value is a first preset constant value; or

The target value is determined according to at least one of the number of CCEs in the CORESET, the number of TRPs, the value of the carrier indication field, the aggregation level, and the identification information of the transmission configuration indication TCI.

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

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

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

Determine the third pseudo-random number seed for obtaining the starting offset value of the terminal at the PDCCH candidate position of the CORESET according to the number of CORESETs that can be configured at most in each BWP and the identification information of the CORESET, according to the third pseudo-random number seed. The random number seed determines the starting offset value of the terminal in the PDCCH candidate position of the CORESET;

Wherein, the second pseudo-random number seed is different from the corresponding pseudo-random number seed when the identification information of CORESET is smaller than the preset number; the first target offset is based on the number of control channel elements CCE in CORESET, TRP At least one of the number of , the carrier indication field value, the aggregation level, and the identification information of the transmission configuration indication TCI is determined, or, the first target offset is a second preset constant value; in each BWP The maximum number of CORESETs that can be configured is greater than 3.

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

The third preset constant value is determined as the starting offset value of the PDCCH candidate position of the terminal in the common search space CSS of CORESET, and the third preset constant value is determined by the identification information of the TRP indication parameter;

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

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

The network device may be a base station (Base Transceiver Station, BTS for short) in Global System of Mobilecommunication (GSM for short) or Code Division Multiple Access (CDMA for short), or a broadband code division A base station (NodeB, NB) in multiple access (Wideband CodeDivision Multiple Access, WCDMA for short) can also be an evolved base station (Evolutional Node B, eNB or eNodeB for short) in LTE, or a relay station or an access point, or a future The base stations and the like in the 5G network are not limited here.

Embodiments of the present invention further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, a method for determining the location of a physical downlink control channel candidate applied to a network device side is implemented. In order to avoid repetition, the details are not repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk, or an optical disk.

The above are the preferred embodiments of the present invention, and it should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications are also included in the present invention. within the scope of protection of the invention.

Claims (33)

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:

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;

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:

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.

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:

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.

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:

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.

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:

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:

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.

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:

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.

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:

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:

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.

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:

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.

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:

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

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.

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:

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.

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:

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.

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:

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;

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:

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.

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:

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.

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:

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.

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:

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:

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.

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:

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.

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

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

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:

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:

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.

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:

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.

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:

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

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.

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:

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 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 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;

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.

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:

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;

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.

29. A terminal, comprising:

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;

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;

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.

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 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;

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;

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.

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.

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