CN113542174B

CN113542174B - Method and apparatus in a node used for wireless communication

Info

Publication number: CN113542174B
Application number: CN202010289027.2A
Authority: CN
Inventors: 蒋琦; 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2022-05-31
Anticipated expiration: 2040-04-14
Also published as: CN113542174A

Abstract

A method and apparatus in a node used for wireless communication is disclosed. A node first receives first information, wherein the first information is used for indicating a first search space set; then monitoring a target control signaling alternative set in a first time window, wherein the target control signaling alternative set comprises a positive integer number of control signaling alternatives; the first set of search spaces belongs to a first serving cell, the first set of scheduled cells including scheduled cells of the first serving cell; the target cell is a serving cell other than the first serving cell, and whether the first set of scheduled cells includes the target cell is used to determine whether a control signaling alternative included in the first set of search spaces belongs to the target set of control signaling alternatives. The application aims at multiple scheduling carriers and allows the adoption of cross-carrier scheduling scenarios with different subcarrier intervals, and improves the rule of discarding the search space to improve the blind detection performance.

Description

Method and apparatus in a node used for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and in particular, to a transmission method of a PDCCH (Physical Downlink Control Channel) under Release 17 in wireless communication.

Background

In the future, the application scenes of the wireless communication system are more and more diversified, and different application scenes put different performance requirements on the system. In the conventional LTE (Long-Term Evolution ) and LTE-a (Long-Term Evolution Advanced, enhanced Long-Term Evolution) systems, in order to improve transmission bandwidth and increase the capacity of a PDCCH, a Carrier Aggregation (Carrier Aggregation) technology is introduced, that is, a Scheduling Carrier can schedule another Carrier in a cross-Carrier Scheduling manner, and in consideration of system stability and realizability, a primary cell (PCell) can only be Self-scheduled (Self-Scheduling).

In 5G and subsequent Release 17 edition evolution, DSS (Dynamic Spectrum Sharing) technology realizes Sharing of LTE and 5G Spectrum; further, when a primary cell of the terminal is an NR (New Radio Access Technology) carrier and a secondary cell (SCell) is an LTE carrier, the NR carrier can be scheduled through the LTE carrier. Research on DSS related technologies is decided and standardized at # 86-time congress in the RAN (Radio Access Network).

Disclosure of Invention

In the conventional PDCCH blind detection of Release 16, a terminal may maintain a maximum number of Control Channel candidates (PDCCH candidates) Monitored (Monitored) for a Serving Cell (Serving Cell) in a Downlink Bandwidth Part (DL BWP, Downlink Bandwidth Part) in a Slot (Slot) and a maximum number of Control Channel Elements (CCE) of Non-Overlapped (Non-Overlapped); when the total control channel alternatives and the total number of non-overlapping CCEs that the terminal needs to monitor exceed the upper limit, the terminal performs blind detection according to the Search Space Set identifier (Search Space Set ID) from small to large under the condition of ensuring the blind detection times of the CSS (Common Search Space), and a Search Space Set with a larger Search Space Set identifier is more easily discarded (Dropping).

In the DSS scenario, when one Scheduled Cell (Scheduled Cell) can be Scheduled by multiple Scheduling Cells (Scheduling Cells), and the Scheduling Cell and the Scheduled Cell respectively employ different SCS (sub-carrier Spacing), the above discarding mechanism needs to be redefined.

In view of the above, the present application provides a solution. It should be noted that, in the above problem description, the multi-carrier is only used as a typical application scenario or example. The application is equally applicable to other scenarios than multi-carrier or multi-antenna facing similar problems (such as other multi-carrier transmission or multi-channel transmission, or other networks with specific requirements for data scheduling, or multiple TRP (transmit Receiver Points) scenarios, can achieve similar technical effects. Embodiments and features of embodiments in a first node of the present application may be applied to a second node and vice versa, hi particular, for the interpretation of terms (Terminology), nouns, functions, variables in this application (if not specifically stated) reference may be made to the definitions in the Specification protocol TS (Technical Specification) 36 series, TS38 series, TS37 series of 3 GPP.

In view of the above, the present application provides a solution. It should be noted that, without conflict, the embodiments and features in the embodiments in the first node of the present application may be applied to the second node and vice versa. Further, the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict.

The application discloses a method in a first node for wireless communication, comprising:

receiving first information, the first information being used to indicate a first set of search spaces;

monitoring a target control signaling alternative set in a first time window, wherein the target control signaling alternative set comprises a positive integer number of control signaling alternatives;

wherein the first search space set comprises a positive integer number of control signaling alternatives; the frequency domain resource occupied by any control signaling alternative included in the first search space set belongs to a first serving cell, and the first scheduled cell set includes a scheduled cell of the first serving cell; a target cell is a serving cell other than the first serving cell, and whether the first set of scheduled cells includes the target cell is used to determine whether a control signaling alternative included in the first set of search spaces belongs to the target set of control signaling alternatives; the subcarrier interval of the subcarrier occupied by one control signaling alternative in the frequency domain included in the target control signaling alternative set is used for determining the time length of the first time window.

As an embodiment, one technical feature of the above method is that: the method for determining the discarding sequence among the plurality of search spaces according to the priority is only carried out in a scheduling cell capable of scheduling the target cell; that is, when one or more scheduling cells can schedule the target cell, blind detection is dynamically shared among the one or more scheduling cells and discarded based on some criteria to ensure performance.

According to one aspect of the application, comprising:

receiving second information;

wherein the second information is used to determine a scheduling cell of the target cell; when the scheduling cell of the target cell includes the first serving cell, the target cell belongs to the first set of scheduled cells; when the scheduling cell of the target cell does not include the first serving cell, the target cell does not belong to the first set of scheduled cells.

As an embodiment, one technical feature of the above method is that: the design of the discard criterion for the search space in the present application is applicable to scheduling blind detection of the first set of scheduled cells.

According to an aspect of the application, any one of the serving cells comprised by the first serving cell, the target cell and the first set of scheduled cells belongs to a first cell group, the target cell being a primary cell of the first cell group.

As an embodiment, one technical feature of the above method is that: the design of the discard criteria for the search space in this application is used in the first cell group.

According to an aspect of the present application, when the first set of scheduled cells does not include the target cell, the control signaling alternatives included in the first set of search spaces belong to the target set of control signaling alternatives.

As an embodiment, one technical feature of the above method is that: when the target cell is a main cell, in order to ensure the scheduling of the target cell, the configuration of the corresponding search space set is greater than the blind detection capability of the first node, and then the problem that the search space set is excessively configured and needs to be discarded occurs; and the base station can ensure that the configured search space set does not exceed the processing capacity of the first node, and further does not need to design a discarding criterion.

According to an aspect of the application, when the first set of scheduled cells includes the target cell; the first information is used to indicate a second search space set, the second search space set includes a positive integer number of control signaling alternatives, frequency domain resources occupied by the second search space belong to a second serving cell, any serving cell in a second scheduled cell set can be scheduled by the second serving cell, the second scheduled cell set includes the target cell; the subcarrier interval of the subcarrier occupied by the control signaling alternative in the first search space set in the frequency domain is a first subcarrier interval, and the subcarrier interval of the subcarrier occupied by the control signaling alternative in the second search space set in the frequency domain is a second subcarrier interval; the first subcarrier spacing and the second subcarrier spacing are commonly used for determining whether the control signaling alternatives included in the first search space set belong to the target control signaling alternative set.

As an embodiment, one technical feature of the above method is that: for a plurality of search space sets capable of scheduling a primary cell, for example, the first search space set and the second search space set can dynamically share blind detection, and a determination is made according to whether the first search space set and the second search space set adopt the same SCS.

According to an aspect of the present application, the first subcarrier spacing and the second subcarrier spacing are different, and whether the control signaling candidate included in the first search space set belongs to the target control signaling candidate set is independent of the second search space set.

As an embodiment, one technical feature of the above method is that: when the first search space set and the second search space set employ different SCS, the first search space set and the second search space set do not dynamically share blind detection.

According to an aspect of the application, the first subcarrier spacing and the second subcarrier spacing are the same, a first search space set identification and a second search space set identification are used for identifying the first search space set and the second search space set, respectively, the first search space set being associated to a first index, the second search space set being associated to a second index, the first index and the second index both being non-negative integers; the first index and the second index are used together to determine whether a control signaling alternative comprised by the first set of search spaces belongs to the set of target control signaling alternatives.

As an embodiment, one technical feature of the above method is that: when the first search space set and the second search space set adopt the same SCS, determining the priority of the first search space set and the second search space set in the dynamic shared blind detection through the first index and the second index, wherein PDCCH alternatives and non-overlapping CCEs in the search space set with high priority can be reserved preferentially.

According to an aspect of the application, a first threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth section at the first subcarrier spacing and in the first time window, a second threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth section at the first subcarrier spacing and in the first time window, the number of control channel alternatives monitored by the first node in one downlink bandwidth section of the first serving cell is not greater than the first threshold, and the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth section of the first serving cell is not greater than the second threshold; a third threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in a second time window, a fourth threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in the second time window, the number of control channel alternatives monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the third threshold, and the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the fourth threshold; the second time window overlaps the first time window, the second subcarrier spacing being used to determine the second time window.

As an embodiment, one technical feature of the above method is that: when the first search space set and the second search space set employ different SCSs; blind detection in the first set of search spaces is constrained by a first threshold and a second threshold corresponding to the first subcarrier spacing, and the second set of search spaces is constrained by a third threshold and a fourth threshold corresponding to the second subcarrier spacing; and the PDCCH candidate and the non-overlapping CCE in the first search space set are unrelated to the PDCCH candidate and the non-overlapping CCE in the second search space set, that is, it is independent to determine whether the first search space set performs dropping and determine whether the second search space set performs dropping.

According to an aspect of the present application, when the first index is greater than the second index, the control signaling alternative included in the second search space set belongs to the target control signaling alternative set, and the control signaling alternative included in the first search space set does not belong to the target control signaling alternative set; when the first index is smaller than the second index, the control signaling candidates included in the first search space set belong to the target control signaling candidate set, and the control signaling candidates included in the second search space set do not belong to the target control signaling candidate set.

As an embodiment, one technical feature of the above method is that: when the first search space set and the second search space set adopt the same SCS, the first search space set and the second search space set dynamically share blind detection; and in dynamic sharing, the first index and the second index are used for identifying the priority of the first search space set and the second search space set, and the smaller the index, the higher the priority, the less easy the index is to be dropped.

According to one aspect of the application, comprising:

receiving a first signaling;

wherein the first signaling occupies one or more control signaling candidates from a positive integer number of control signaling candidates included in the target control signaling candidate set.

The application discloses a method in a second node for wireless communication, comprising:

sending first information, the first information being used to indicate a first set of search spaces;

determining a target control signaling alternative set in a first time window, wherein the target control signaling alternative set comprises a positive integer of control signaling alternatives;

wherein the first search space set comprises a positive integer number of control signaling alternatives; the frequency domain resource occupied by any control signaling alternative included in the first search space set belongs to a first serving cell, and the first scheduled cell set includes a scheduled cell of the first serving cell; the target cell is a serving cell other than the first serving cell, and whether the first set of scheduled cells includes the control signaling candidate included in the first set of search spaces is used to determine whether the control signaling candidate belongs to the target set of control signaling candidates; the subcarrier interval of the subcarrier occupied by one control signaling alternative in the frequency domain included in the target control signaling alternative set is used for determining the time length of the first time window.

According to one aspect of the application, comprising:

sending the second information;

According to an aspect of the application, when the first set of scheduled cells includes the target cell; the first information is used to indicate a second search space set, the second search space set includes a positive integer number of control signaling alternatives, frequency domain resources occupied by the second search space belong to a second serving cell, any serving cell in a second scheduled cell set can be scheduled by the second serving cell, the second scheduled cell set includes the target cell; the subcarrier interval of the subcarrier occupied by one control signaling alternative in the first search space set in the frequency domain is a first subcarrier interval, and the subcarrier interval of the subcarrier occupied by one control signaling alternative in the second search space set in the frequency domain is a second subcarrier interval; the first subcarrier spacing and the second subcarrier spacing are commonly used for determining whether the control signaling alternatives included in the first search space set belong to the target control signaling alternative set.

According to an aspect of the application, the first subcarrier spacing and the second subcarrier spacing are the same, a first search space set identification and a second search space set identification are used for identifying the first search space set and the second search space set, respectively, the first search space set being associated to a first index, the second search space set being associated to a second index, the first index and the second index both being non-negative integers; the first index and the second index are used together to determine whether the control signaling candidate included in the first set of search spaces belongs to the target set of control signaling candidates.

According to one aspect of the application, the recipient of the first information comprises a first node; a first threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window, a second threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window, the number of control channel alternatives monitored by the first node in one downlink bandwidth portion of the first serving cell is not greater than the first threshold, and the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth portion of the first serving cell is not greater than the second threshold; a third threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in a second time window, a fourth threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in the second time window, the number of control channel alternatives monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the third threshold, and the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the fourth threshold; the second time window overlaps the first time window, the second subcarrier spacing being used to determine the second time window.

According to one aspect of the application, comprising:

sending a first signaling;

wherein the first signaling occupies one or more control signaling alternatives in a positive integer number of control signaling alternatives included in the target control signaling alternative set.

The application discloses a first node for wireless communication, characterized by comprising:

a first receiver to receive first information, the first information being used to indicate a first set of search spaces;

a second receiver, configured to monitor a target control signaling candidate set in a first time window, where the target control signaling candidate set includes a positive integer number of control signaling candidates;

The application discloses a second node for wireless communication, characterized by comprising:

a first transmitter to transmit first information, the first information being used to indicate a first set of search spaces;

a second transmitter, configured to determine a target control signaling alternative set in a first time window, where the target control signaling alternative set includes a positive integer number of control signaling alternatives;

As an example, compared with the conventional scheme, the method has the following advantages:

the method of determining the discard order between the plurality of search spaces according to priority is performed only in the scheduling cell capable of scheduling the target cell; when one or more scheduling cells can schedule the target cell, blind detection is dynamically shared among the one or more scheduling cells and discarded based on a certain criterion to ensure the performance;

when the target cell is a primary cell, in order to ensure scheduling of the target cell, configuration of a corresponding search space is greater than blind detection capability of the first node, and then a problem that a search space set is configured too much and needs to be discarded occurs; the base station can ensure that the configured search space set does not exceed the processing capacity of the first node, and further does not need to design a discarding criterion;

for a plurality of search space sets capable of scheduling primary cells, for example, the first search space set and the second search space set can dynamically share blind detection needs to be determined according to whether the first search space set and the second search space set adopt the same SCS or not; when the first search space set and the second search space set employ different SCS, the first search space set and the second search space set do not dynamically share blind detection; when the first search space set and the second search space set employ the same SCS, the first search space set and the second search space set dynamically share blind detection; and in dynamic sharing, the first index and the second index are used to identify priorities of the first set of search spaces and the second set of search spaces.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof with reference to the accompanying drawings in which:

FIG. 1 illustrates a process flow diagram of a first node according to one embodiment of the present application;

FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

figure 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application;

fig. 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the application;

FIG. 5 shows a flow diagram of first information according to an embodiment of the present application;

fig. 6 shows a schematic diagram of a first serving cell according to an embodiment of the present application;

FIG. 7 shows a schematic diagram of a first set of search spaces and a second set of search spaces according to an embodiment of the present application;

figure 8 shows a schematic diagram of a first serving cell and a second serving cell according to an embodiment of the present application;

FIG. 9 shows a schematic diagram of search space blind detection ordering according to an embodiment of the present application;

FIG. 10 shows a schematic diagram of search space blind detection ordering according to another embodiment of the present application;

FIG. 11 shows a block diagram of a processing device in a first node according to an embodiment of the application;

FIG. 12 shows a block diagram of a processing device in a second node according to an embodiment of the present application;

fig. 13 shows a flow chart of a first signaling according to the application.

Detailed Description

The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.

Example 1

Embodiment 1 illustrates a processing flow diagram of a first node, as shown in fig. 1. In 100 shown in fig. 1, each block represents a step. In embodiment 1, a first node in the present application first receives first information in step 101, where the first information is used to indicate a first set of search spaces; subsequently, in step 102, a target control signaling alternative set is monitored in a first time window, where the target control signaling alternative set includes a positive integer number of control signaling alternatives.

In embodiment 1, the first search space set includes a positive integer number of control signaling alternatives; the frequency domain resource occupied by any control signaling alternative included in the first search space set belongs to a first serving cell, and the first scheduled cell set includes a scheduled cell of the first serving cell; a target cell is a serving cell other than the first serving cell, and whether the first set of scheduled cells includes the target cell is used to determine whether a control signaling alternative included in the first set of search spaces belongs to the target set of control signaling alternatives; the subcarrier interval of the subcarrier occupied by one control signaling alternative in the frequency domain included in the target control signaling alternative set is used for determining the time length of the first time window.

As an embodiment, what carries the first information is RRC (Radio Resource Control) signaling.

As an embodiment, the first information is UE (User Equipment) specific.

As one embodiment, the first information is specific to the first node.

As an embodiment, the first Information includes a ControlResourceSet IE (Information Elements) in the TS 38.331.

For one embodiment, the first information includes a SearchSpace IE in the TS 38.331.

As an embodiment, the first information includes a ControlResourceSetPool IE in the TS 38.331.

As an embodiment, the first information is used to indicate time domain resources, frequency domain resources, or time-frequency resources occupied by the first search space set.

As an embodiment, the first information is used to indicate a number of PDCCH alternatives included in the first set of search spaces.

As an embodiment, the first information is used to indicate an AL (Aggregation Level) adopted by PDCCH alternatives included in the first search space set.

As an embodiment, the first information is used to indicate serving cells that can be scheduled by the first set of search spaces.

As an embodiment, the first information includes all or part of a higher layer signaling.

As an embodiment, the first information includes all or part of a physical layer signaling.

As an embodiment, the first information includes all or part of an RRC signaling.

As an embodiment, the first information includes all or part of a MAC (Medium Access Control) layer signaling.

As an embodiment, the first Information includes all or part of a System Information Block (SIB).

As an embodiment, the first information is transmitted through a PDSCH (Physical Downlink Shared Channel).

As an embodiment, the first information comprises a field "sceleltoaddmost" in the CellGroupConfig IE in RRC signaling.

As an embodiment, the first information comprises a field "sceleltoreleaselist" in the CellGroupConfig IE in RRC signaling.

As an embodiment, the first set of Search spaces is one PDCCH Search Space.

As an embodiment, the first Search Space Set is a PDCCH Search Space Set.

As an embodiment, the first Search Space set is a USS (UE-specific Search Space).

As an embodiment, the first set of Search spaces is a Common Search Space (CSS).

As an embodiment, any control signaling alternative among the positive integer number of control signaling alternatives included in the first search space set is a PDCCH alternative (Candidate).

As an embodiment, any control signaling alternative among the positive integer number of control signaling alternatives included in the target control signaling alternative set is a PDCCH alternative.

As an embodiment, the first search space set adopts a first search space identifier, and the first search space identifier is a non-negative integer.

As an embodiment, the first time window is a time slot corresponding to the first subcarrier interval.

As an embodiment, the first time window comprises a positive integer number of OFDM (Orthogonal Frequency Division Multiplexing) symbols (Symbol) that are consecutive in time domain.

As an embodiment, the subcarrier spacing of the subcarrier occupied by the control signaling alternative in the first search space set in the frequency domain is a first subcarrier spacing.

As an embodiment, the subcarrier spacing of the subcarrier occupied by any one of the control signaling alternatives in the first search space set in the frequency domain is a first subcarrier spacing.

As an embodiment, the first time window includes a positive integer number of OFDM (Orthogonal Frequency Division Multiplexing) symbols that are consecutive in time domain corresponding to the first subcarrier spacing in the present application.

As an example, the first time window is a Span (Span).

As an embodiment, the first time window is a span corresponding to the first subcarrier spacing in this application.

As an embodiment, the first time window is a time interval with the smallest time interval length between the earliest OFDM symbols in two PDCCH occasions (occupancy).

As an embodiment, the first time window is a Mini-slot.

As an embodiment, the first time window is a Sub-slot (Sub-slot).

As an embodiment, the first time window is one slot (slot).

As an embodiment, the first subcarrier spacing is equal to one of 15kHz (kilohertz), 30kHz, 60kHz, 120kHz, 240 kHz.

As an embodiment, the target set of control signaling alternatives includes all control signaling alternatives monitored by the first node in the first time window.

As an embodiment, the target set of control signaling alternatives comprises all control signaling alternatives monitored by the first node in the first time window and in frequency domain resources comprised by the first serving cell.

As an embodiment, the target control signaling alternative set includes all control signaling alternatives monitored by the first node in the first time window and in one downlink BWP (Bandwidth Part) included in the first serving cell.

As an embodiment, the first node only has one Active (Active) downlink BWP on the first serving cell in the first time window, and the frequency domain resource occupied by the first search space belongs to the downlink BWP.

As an embodiment, the target control signaling alternative set includes a positive integer number of control signaling alternatives greater than 1.

As an embodiment, the Serving Cell in the present application is a Serving Cell.

As an embodiment, the serving cell in the present application is a CC (Component Carrier).

As an embodiment, the first serving Cell is a Secondary Cell (Secondary Cell).

As an embodiment, the first serving Cell is a secondary Cell in an MCG (Master Cell Group).

As an embodiment, the first serving Cell is a Secondary Cell in an SCG (Secondary Cell Group).

As one embodiment, the first serving cell is a secondary cell with a smallest serving cell identity (ServingCellId).

As an embodiment, the first set of scheduled cells comprises only one given serving cell, the first serving cell being capable of scheduling the given serving cell.

As a sub-embodiment of this embodiment, the given serving cell is different from the first serving cell.

As an embodiment, the first set of scheduled cells includes Q1 serving cells, any one of the Q1 serving cells is capable of being scheduled by the first serving cell, the Q1 is greater than 1.

As a sub-embodiment of this embodiment, the Q1 serving cells respectively adopt Q1 different serving cell identities.

As a sub-embodiment of this embodiment, the Q1 serving cells occupy Q1 non-overlapping frequency bands, respectively.

As a sub-embodiment of this embodiment, the Q1 serving cells are Q1 CCs, respectively.

As an embodiment, the meaning that the target cell is a serving cell other than the first serving cell includes: the target cell and the first service cell respectively correspond to different service cell identifiers.

As an embodiment, the meaning that the sentence target cell is a serving cell other than the first serving cell includes: the target cell is a primary cell and the first serving cell is a secondary cell.

As an embodiment, the meaning that the sentence target cell is a serving cell other than the first serving cell includes: the frequency domain resources occupied by the target cell and the frequency domain resources occupied by the first serving cell are orthogonal.

As an embodiment, the above sentence that whether the first scheduled cell set includes the target cell is used to determine whether the control signaling candidate included in the first search space set belongs to the target control signaling candidate set includes: when the first set of scheduled cells does not include the target cell, the control signaling alternatives included in the first set of search spaces belong to the target set of control signaling alternatives.

As an embodiment, the above sentence that whether the first scheduled cell set includes the target cell is used to determine whether the control signaling candidate included in the first search space set belongs to the target control signaling candidate set includes: when the first set of scheduled cells does not include the target cell, the first node monitors all control signaling alternatives included in the first set of search spaces.

As an embodiment, the above sentence that whether the first scheduled cell set includes the target cell is used to determine whether the control signaling candidate included in the first search space set belongs to the target control signaling candidate set includes: when the first set of scheduled cells does not include the target cell, the control signaling alternatives included in the first set of search spaces are not discarded (Dropping).

As an embodiment, the above sentence that whether the first scheduled cell set includes the target cell is used to determine whether the control signaling candidate included in the first search space set belongs to the target control signaling candidate set includes: when the first set of scheduled cells includes the target cell, whether the control signaling alternative included in the first search space belongs to the target set of control signaling alternatives depends on a first index associated with the first set of search spaces.

As an embodiment, the above sentence that whether the first scheduled cell set includes the target cell is used to determine whether the control signaling candidate included in the first search space set belongs to the target control signaling candidate set includes: when the first set of scheduled cells includes the target cell, whether the control signaling alternative included in the first search space belongs to the target control signaling alternative set depends on whether there is a search space with a higher priority than the first search space.

As an embodiment, the above sentence that whether the first scheduled cell set includes the target cell is used to determine whether the control signaling candidate included in the first search space set belongs to the target control signaling candidate set includes: when the first scheduled cell set includes the target cell, whether the control signaling candidate included in the first search space belongs to the target control signaling candidate set depends on whether blind detection capability monitoring control signaling candidates and non-overlapping CCEs remain after the first node completes monitoring for the control signaling candidate included in the common search space in the first serving cell.

As an embodiment, the above sentence that whether the first scheduled cell set includes the target cell is used to determine whether the control signaling candidate included in the first search space set belongs to the target control signaling candidate set includes: whether the control signaling alternatives comprised by the first search space belong to the target set of control signaling alternatives depends on the blind detection capability of the first node, when the first set of scheduled cells comprises the target cell.

As a sub-embodiment of this embodiment, the blind detection capability of the first node includes: the maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window in the present application.

As a sub-embodiment of this embodiment, the blind detection capability of the first node includes: the first node monitors a maximum number of non-overlapping control channel elements for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window in the present application.

As an embodiment, a subcarrier interval of a subcarrier occupied by one control signaling alternative included in the target control signaling alternative set in the frequency domain is a first subcarrier interval, and the first subcarrier interval is used to determine a time length of the first time window.

As a sub-embodiment of this embodiment, the first time window is one time slot, the first subcarrier spacing is used to determine the number of time slots included in one Subframe (Subframe), and the time length of the first time window is equal to the ratio of the length of one Subframe to the number of time slots included in one Subframe.

As a sub-embodiment of this embodiment, the first subcarrier spacing is used to determine a time length of each OFDM symbol comprised by the first time window.

As a sub-embodiment of this embodiment, the first time window is a span, and the first subcarrier spacing is used to determine a time length of each OFDM symbol included in the span.

As a sub-embodiment of this embodiment, a Configuration (Configuration) Index (Index) of the first subcarrier spacing is used to determine the time length of the first time window.

As a sub-embodiment of this embodiment, the first subcarrier spacing is used to determine the time length of the first time window according to a correspondence.

As a sub-embodiment of this embodiment, the first subcarrier spacing is used to determine the time length of the first time window according to a table correspondence.

As an embodiment, the first Set of search spaces is associated to a CORESET (Control Resource Set).

As an embodiment, the first set of search spaces is associated to a CORESET Pool (Pool).

As an embodiment, at least two control signaling candidates exist in the control signaling candidates in the target control signaling candidate set, and the two control signaling candidates respectively belong to two different search space sets.

As a sub-embodiment of this embodiment, one of the two different sets of search spaces is the first set of search spaces.

As a sub-embodiment of this embodiment, either of the two different sets of search spaces is not the first set of search spaces.

As an embodiment, any control signaling alternative in the target control signaling alternative set belongs to one search space set.

For one embodiment, the first set of search spaces includes M1 control channel alternatives, the M1 being a positive integer greater than 1.

As a sub-embodiment of this embodiment, any one of the M1 control channel candidates uses the first subcarrier spacing.

As a sub-embodiment of this embodiment, all control channel alternatives of the M1 control channel alternatives employ the first subcarrier spacing.

As a sub-embodiment of this embodiment, at least one control channel alternative among the M1 control channel alternatives employs the first subcarrier spacing.

As a sub-embodiment of this embodiment, any one of the M1 Control Channel alternatives occupies a positive integer number of CCEs (Control Channel elements).

As a sub-embodiment of this embodiment, any control channel candidate among the M1 control channel candidates occupies a positive integer number of REs (Resource Elements) greater than 1.

As a sub-embodiment of this embodiment, any one of the M1 control channel alternatives occupies one of 1 control channel element, 2 control channel elements, 4 control channel elements, 8 control channel elements, and 16 control channel elements.

As a sub-embodiment of this embodiment, any one of the M1 Control channel alternatives is a physical Downlink Control channel alternative that adopts one or more DCI (Downlink Control Information) Payload sizes (Payload sizes).

As a sub-embodiment of this embodiment, any one of the M1 control channel alternatives is a time-frequency resource set carrying DCI of a specific one or more formats (formats).

As an embodiment, the monitoring of the target control signaling alternative set in the first time window is implemented by Decoding (Decoding) of control channel alternatives included in the target control signaling alternative set.

As an embodiment, the monitoring of the target control signaling alternative set in the first time window is implemented by Blind Decoding (Blind Decoding) of control channel alternatives included in the target control signaling alternative set.

As an embodiment, the monitoring of the target control signaling alternative set in the first time window is implemented by decoding and CRC (Cyclic Redundancy Check) checking the control channel alternatives included in the target control signaling alternative set.

As an embodiment, the monitoring of the target control signaling candidate set in the first time window is implemented by decoding a control channel candidate included in the target control signaling candidate set and performing CRC check on a scrambled RNTI (Radio Network Temporary Identity).

As an embodiment, the monitoring of the target control signaling alternative set in the first time window is implemented based on decoding of control channel alternatives included in the target control signaling alternative set by the monitored DCI format (s)).

As an embodiment, the frequency domain resource occupied by the control signaling alternatives included in the target control signaling alternative set is between 450MHz and 6 GHz.

As an embodiment, the frequency domain resource occupied by the control signaling alternatives included in the target control signaling alternative set is between 24.25GHz and 52.6 GHz.

As an embodiment, the frequency domain resource occupied by the control signaling alternatives included in the first search space set is between 450MHz and 6 GHz.

As an embodiment, the frequency domain resource occupied by the control signaling alternatives included in the first search space set is between 24.25GHz and 52.6 GHz.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture, as shown in fig. 2.

Fig. 2 illustrates a diagram of a network architecture 200 for 5G NR, LTE (Long-Term Evolution), and LTE-a (Long-Term Evolution-enhanced) systems. The 5G NR or LTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200 or some other suitable terminology. The EPS 200 may include one or more UEs (User Equipment) 201, NG-RANs (next generation radio access networks) 202, EPCs (Evolved Packet cores)/5G-CNs (5G-Core networks) 210, HSS (Home Subscriber Server) 220, and internet services 230. The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the EPS provides packet-switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit-switched services or other cellular networks. The NG-RAN includes NR node b (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (transmitting receiving node), or some other suitable terminology. The gNB203 provides an access point for the UE201 to the EPC/5G-CN 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a drone, an aircraft, a narrowband internet of things device, a machine type communication device, a terrestrial vehicle, an automobile, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 connects to the EPC/5G-CN 210 through the S1/NG interface. The EPC/5G-CN 210 includes MME (Mobility Management Entity)/AMF (Authentication Management Domain)/UPF (User Plane Function) 211, other MMEs/AMF/UPF 214, S-GW (Service Gateway) 212, and P-GW (Packet data Network Gateway) 213. MME/AMF/UPF211 is a control node that handles signaling between UE201 and EPC/5G-CN 210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW 213. The P-GW213 provides UE IP address allocation as well as other functions. The P-GW213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a packet-switched streaming service.

As an embodiment, the UE201 corresponds to the first node in this application.

As an embodiment, the UE201 is a terminal supporting Massive MIMO (large-scale multiple input multiple output).

As an embodiment, the UE201 is capable of receiving PDCCH on multiple TRPs.

As an embodiment, the UE201 is a terminal supporting cross-carrier scheduling.

As an embodiment, the UE201 can be scheduled simultaneously on multiple carriers.

As an embodiment, the UE201 can be served on both LTE and NR carriers.

As an embodiment, the UE201 supports multi-carrier transmission.

As an embodiment, the UE201 supports secondary carrier cross-carrier scheduling of transmission of a primary carrier.

As an embodiment, the UE201 supports multiple scheduling carriers to schedule one scheduled carrier.

As an embodiment, the UE201 supports different SCS for the scheduling cell and the scheduled cell scheduled by the scheduling cell.

As an embodiment, the gNB203 corresponds to the second node in this application.

As an embodiment, the gNB203 supports Massive MIMO.

As an embodiment, the gNB203 supports cross-carrier scheduling.

As an embodiment, the gNB203 can be simultaneously scheduled one terminal on multiple carriers.

As an embodiment, the gNB203 may be capable of serving the first node on both an LTE carrier and an NR carrier.

As an embodiment, the gNB203 may be capable of serving the first node on both an LTE-a carrier and an NR carrier.

As an embodiment, the gNB203 supports different SCS for the scheduling cell and the scheduled cell scheduled by the scheduling cell.

As an embodiment, the gNB203 includes a plurality of TRPs.

As an embodiment, the gNB203 supports multi-carrier transmission.

As an embodiment, the gNB203 supports secondary carrier cross-carrier scheduling of transmission of a primary carrier.

For one embodiment, the gNB203 supports multiple scheduling carriers to schedule one scheduled carrier.

As an embodiment, the air interface between the UE201 and the gNB203 is a Uu interface.

As an embodiment, the radio link between the UE201 and the gNB203 is a cellular link.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane 350 and the control plane 300, fig. 3 showing the radio protocol architecture for the control plane 300 between a first communication node device (UE, RSU in gbb or V2X) and a second communication node device (gbb, RSU in UE or V2X) in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above PHY301 and is responsible for the link between the first communication node device and the second communication node device through PHY 301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by ciphering data packets, and the PDCP sublayer 304 also provides handover support for a first communication node device to a second communication node device. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in layer 3 (layer L3) in the Control plane 300 is responsible for obtaining Radio resources (i.e. Radio bearers) and configuring the lower layers using RRC signaling between the second communication node device and the first communication node device. The radio protocol architecture of the user plane 350 comprises layer 1(L1 layer) and layer 2(L2 layer), the radio protocol architecture in the user plane 350 for the first and second communication node devices being substantially the same for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355 and the MAC sublayer 352 in the L2 layer 355 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 further includes an SDAP (Service Data Adaptation Protocol) sublayer 356, and the SDAP sublayer 356 is responsible for mapping between QoS streams and Data Radio Bearers (DRBs) to support diversity of services. Although not shown, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., far end UE, server, etc.).

As an example, the wireless protocol architecture in fig. 3 is applicable to the first node in this application.

As an example, the radio protocol architecture in fig. 3 is applicable to the second node in this application.

As an embodiment, the PDCP304 of the second communication node device is used to generate a schedule for the first communication node device.

As an embodiment, the PDCP354 of the second communication node device is used to generate a schedule for the first communication node device.

As an embodiment, the first information in this application is generated in the RRC 306.

As an embodiment, the first information in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the first information in the present application is generated in the PHY301 or the PHY 351.

As an embodiment, the second information in this application is generated in the RRC 306.

As an embodiment, the second information in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the second information in the present application is generated in the PHY301 or the PHY 351.

Example 4

Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in fig. 4. Fig. 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

The first communications device 450 includes a controller/processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter/receiver 454, and an antenna 452.

The second communication device 410 includes a controller/processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multiple antenna receive processor 472, a multiple antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.

In transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper layer data packets from the core network are provided to a controller/processor 475. The controller/processor 475 implements the functionality of layer L2. In transmissions from the second communications device 410 to the first communications device 450, the controller/processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communications device 450 based on various priority metrics. The controller/processor 475 is also responsible for retransmission of lost packets, and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 410, as well as mapping of signal constellation based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes with reference signals (e.g., pilots) in the time and/or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate the physical channels carrying the time-domain multicarrier symbol streams. The multi-antenna transmit processor 471 then performs transmit analog precoding/beamforming operations on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream that is then provided to a different antenna 420.

In a transmission from the second communications apparatus 410 to the first communications apparatus 450, each receiver 454 receives a signal through its respective antenna 452 at the first communications apparatus 450. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream that is provided to a receive processor 456. Receive processor 456 and multi-antenna receive processor 458 implement the various signal processing functions of the L1 layer. A multi-antenna receive processor 458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. Receive processor 456 converts the baseband multicarrier symbol stream after the receive analog precoding/beamforming operation from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals to be used for channel estimation are demultiplexed by the receive processor 456, and the data signals are subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial streams destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered at a receive processor 456 and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communications device 410 on the physical channel. The upper layer data and control signals are then provided to a controller/processor 459. The controller/processor 459 implements the functionality of the L2 layer. The controller/processor 459 may be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In transmissions from the second communications device 410 to the second communications device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the core network. The upper layer packet is then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

In a transmission from the first communications device 450 to the second communications device 410, a data source 467 is used at the first communications device 450 to provide upper layer data packets to a controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the send function at the second communications apparatus 410 described in the transmission from the second communications apparatus 410 to the first communications apparatus 450, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to said second communications device 410. A transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding by a multi-antenna transmit processor 457 including codebook-based precoding and non-codebook based precoding, and beamforming, and the transmit processor 468 then modulates the resulting spatial streams into multi-carrier/single-carrier symbol streams, which are provided to different antennas 452 via a transmitter 454 after analog precoding/beamforming in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and provides the radio frequency symbol stream to the antenna 452.

In a transmission from the first communication device 450 to the second communication device 410, the functionality at the second communication device 410 is similar to the receiving functionality at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives an rf signal through its respective antenna 420, converts the received rf signal to a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multiple antenna receive processor 472 collectively implement the functionality of the L1 layer. Controller/processor 475 implements the L2 layer functions. The controller/processor 475 can be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In transmission from the first communications device 450 to the second communications device 410, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the UE 450. Upper layer data packets from the controller/processor 475 may be provided to a core network.

As an embodiment, the first communication device 450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, for use with the at least one processor, the first communication device 450 apparatus at least: first receiving first information, the first information being used to indicate a first set of search spaces; then monitoring a target control signaling alternative set in a first time window, wherein the target control signaling alternative set comprises a positive integer number of control signaling alternatives; the first search space set comprises a positive integer number of control signaling alternatives; the frequency domain resource occupied by any control signaling alternative included in the first search space set belongs to a first serving cell, and the first scheduled cell set includes a scheduled cell of the first serving cell; a target cell is a serving cell other than the first serving cell, and whether the first set of scheduled cells includes the target cell is used to determine whether a control signaling alternative included in the first set of search spaces belongs to the target set of control signaling alternatives; the subcarrier interval of the subcarrier occupied by one control signaling alternative in the frequency domain included in the target control signaling alternative set is used for determining the time length of the first time window.

As an embodiment, the first communication device 450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: first receiving first information, the first information being used to indicate a first set of search spaces; then monitoring a target control signaling alternative set in a first time window, wherein the target control signaling alternative set comprises a positive integer number of control signaling alternatives; the first search space set comprises a positive integer number of control signaling alternatives; the frequency domain resource occupied by any control signaling alternative included in the first search space set belongs to a first serving cell, and the first scheduled cell set includes a scheduled cell of the first serving cell; a target cell is a serving cell other than the first serving cell, and whether the first set of scheduled cells includes the target cell is used to determine whether a control signaling alternative included in the first set of search spaces belongs to the target set of control signaling alternatives; the subcarrier interval of the subcarrier occupied by one control signaling alternative in the frequency domain included in the target control signaling alternative set is used for determining the time length of the first time window.

As an embodiment, the second communication device 410 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 410 means at least: first sending first information, the first information being used to indicate a first set of search spaces; then determining a target control signaling alternative set in a first time window, wherein the target control signaling alternative set comprises a positive integer of control signaling alternatives; the first search space set comprises a positive integer number of control signaling alternatives; the frequency domain resource occupied by any control signaling alternative included in the first search space set belongs to a first serving cell, and the first scheduled cell set includes a scheduled cell of the first serving cell; a target cell is a serving cell other than the first serving cell, and whether the first set of scheduled cells includes the target cell is used to determine whether a control signaling alternative included in the first set of search spaces belongs to the target set of control signaling alternatives; the subcarrier interval of the subcarrier occupied by one control signaling alternative in the frequency domain included in the target control signaling alternative set is used for determining the time length of the first time window.

As an embodiment, the second communication device 410 apparatus includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: first sending first information, the first information being used to indicate a first set of search spaces; then determining a target control signaling alternative set in a first time window, wherein the target control signaling alternative set comprises a positive integer of control signaling alternatives; the first search space set comprises a positive integer number of control signaling alternatives; the frequency domain resource occupied by any control signaling alternative included in the first search space set belongs to a first serving cell, and the first scheduled cell set includes a scheduled cell of the first serving cell; a target cell is a serving cell other than the first serving cell, and whether the first set of scheduled cells includes the target cell is used to determine whether a control signaling alternative included in the first set of search spaces belongs to the target set of control signaling alternatives; the subcarrier interval of the subcarrier occupied by one control signaling alternative in the frequency domain included in the target control signaling alternative set is used for determining the time length of the first time window.

As an embodiment, the first communication device 450 corresponds to a first node in the present application.

As an embodiment, the second communication device 410 corresponds to a second node in the present application.

For one embodiment, the first communication device 450 is a UE.

For one embodiment, the first communication device 450 is a terminal.

For one embodiment, the second communication device 410 is a base station.

For one embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459 are configured to receive first information indicative of a first set of search spaces; at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475 are used to send first information that is used to indicate a first set of search spaces.

For one embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller/processor 459 are configured to monitor a target set of control signaling alternatives in a first time window, the target set of control signaling alternatives comprising a positive integer number of control signaling alternatives; at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 are configured to determine a target set of control signaling alternatives in a first time window, the target set of control signaling alternatives comprising a positive integer number of control signaling alternatives.

As one implementation, at least the first four of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller/processor 459 are used to send second information; at least the first four of the antennas 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller/processor 475 are configured to receive second information in a second set of time-frequency resources.

For one embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459 are configured to receive first signaling; at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475 are used to send first signaling.

Example 5

Embodiment 5 illustrates a flow chart of the first information, as shown in fig. 5. In FIG. 5, a first node U1 communicates with a second node N2 via a wireless link. It should be noted that the sequence in the present embodiment does not limit the signal transmission sequence and the implementation sequence in the present application. The step identified in the figure by block F0 is optional.

ForFirst node U1The first information is received in step S10, the second information is received in step S11, and the target control signaling alternative set is monitored in a first time window in step S12.

For theSecond node N2The first information is sent in step S20, the second information is sent in step S21, and the set of target control signaling alternatives is determined in a first time window in step S22.

In embodiment 5, the first search space set includes a positive integer number of control signaling alternatives; the frequency domain resource occupied by any control signaling alternative included in the first search space set belongs to a first serving cell, and the first scheduled cell set includes a scheduled cell of the first serving cell; a target cell is a serving cell other than the first serving cell, and whether the first set of scheduled cells includes the target cell is used to determine whether a control signaling alternative included in the first set of search spaces belongs to the target set of control signaling alternatives; the subcarrier interval of the subcarrier occupied by one control signaling alternative in the frequency domain included in the target control signaling alternative set is used for determining the time length of the first time window; the second information is used to determine a scheduling cell of the target cell; when the scheduling cell of the target cell includes the first serving cell, the target cell belongs to the first set of scheduled cells; when the scheduling cell of the target cell does not include the first serving cell, the target cell does not belong to the first set of scheduled cells.

As an embodiment, the determining, by the second node N2, the meaning of the target control signaling alternative set in the first time window includes: the second node N2 determines, in the first time window, a position of a time domain resource occupied by one control signaling alternative included in the target control signaling alternative set.

As an embodiment, the determining, by the second node N2, the meaning of the target control signaling alternative set in the first time window includes: the second node N2 determines, in the first time window, a position of a frequency domain resource occupied by one control signaling alternative included in the target control signaling alternative set.

As an embodiment, the determining, by the second node N2, the meaning of the target control signaling alternative set in the first time window includes: the second node N2 determines, in the first time window, a position of a frequency domain resource occupied by any control signaling alternative included in the target control signaling alternative set.

As an embodiment, it is RRC signaling that carries the second information.

As an embodiment, the second information is UE-specific.

As one embodiment, the second information is specific to the first node U1.

As one embodiment, the second information is specific to the target cell.

As an embodiment, the second information includes CrossCarrierSchedulingConfig IE in TS 38.331.

As one embodiment, the second information is configured for a serving cell group.

As a sub-embodiment of this embodiment, the set of serving cells includes an MCG.

As a sub-embodiment of this embodiment, the set of serving cells includes an SCG.

As an embodiment, any one of the serving cells included in the first serving cell, the target cell and the first scheduled cell set belongs to a first cell group, and the target cell is a master cell of the first cell group.

As a sub-embodiment of this embodiment, the first cell group includes K2 serving cells, and K2 is a positive integer greater than 1.

As an auxiliary embodiment of the sub-embodiment, the first serving cell is one of the K2 serving cells.

As an additional embodiment of this sub-embodiment, the target cell is one of the K2 serving cells.

As an auxiliary embodiment of this sub-embodiment, any one serving cell included in the first set of scheduled cells is one serving cell of the K2 serving cells.

As a sub-embodiment of this embodiment, the target cell is the only one primary cell in the first cell group.

As a sub-embodiment of this embodiment, the first cell group is an MCG.

As a sub-embodiment of this embodiment, the first group of cells is an SCG.

As a sub-embodiment of this embodiment, the first cell group comprises all serving cells of the first node U1.

As a sub-embodiment of this embodiment, said first cell group comprises all serving cells comprised in scellgroupconfig IE in TS 38.331 in sCellToAddModList.

As an embodiment, when the first set of scheduled cells does not include the target cell, the control signaling alternatives included in the first set of search spaces belong to the target set of control signaling alternatives.

As a sub-embodiment of this embodiment, the second node N2 ensures that, when the control signaling alternatives included in the first search space set belong to the target control signaling alternative set, the blind detection capability of the first node U1 can support monitoring all the control signaling alternatives in the target control signaling alternative set.

As a sub-embodiment of this embodiment, the above phrase that the first set of scheduled cells does not include the target cell means that: the first serving cell may schedule only serving cells other than the target cell.

As an embodiment, when the first set of scheduled cells includes the target cell; the first information is used to indicate a second search space set, the second search space set includes a positive integer number of control signaling alternatives, frequency domain resources occupied by the second search space belong to a second serving cell, any serving cell in a second scheduled cell set can be scheduled by the second serving cell, the second scheduled cell set includes the target cell; the subcarrier interval of the subcarrier occupied by the control signaling alternative in the first search space set in the frequency domain is a first subcarrier interval, and the subcarrier interval of the subcarrier occupied by the control signaling alternative in the second search space set in the frequency domain is a second subcarrier interval; the first subcarrier spacing and the second subcarrier spacing are commonly used for determining whether the control signaling alternatives included in the first search space set belong to the target control signaling alternative set.

As a sub-embodiment of this embodiment, the first information is used to indicate time domain resources, frequency domain resources, or time-frequency resources occupied by the second search space set.

As a sub-embodiment of this embodiment, the first information is used to indicate the number of PDCCH alternatives included in the second set of search spaces.

As a sub-embodiment of this embodiment, the first information is used to indicate an AL (Aggregation Level) adopted by PDCCH alternatives included in the second search space set.

As a sub-embodiment of this embodiment, the first information is used to indicate the serving cells that the second set of search spaces can schedule.

As a sub-embodiment of this embodiment, the second set of Search spaces is one PDCCH Search Space.

As a sub-embodiment of this embodiment, the second Search Space Set is a PDCCH Search Space Set.

As a sub-embodiment of this embodiment, the second set of search spaces is a USS.

As a sub-embodiment of this embodiment, the second set of search spaces is a CSS.

As a sub-embodiment of this embodiment, any control signaling alternative among the positive integer number of control signaling alternatives included in the second search space set is a PDCCH alternative.

As a sub-embodiment of this embodiment, the second search space set corresponds to a second search space identifier, and the second search space identifier is a non-negative integer.

As a sub-embodiment of this embodiment, a subcarrier interval of subcarriers occupied by one control signaling alternative in the second search space set in the frequency domain is the second subcarrier interval.

As a sub-embodiment of this embodiment, a subcarrier interval of a subcarrier occupied by any one control signaling alternative in the second search space set in the frequency domain is the second subcarrier interval.

As a sub-embodiment of this embodiment, the second set of scheduled cells includes Q2 serving cells, any one of the Q2 serving cells can be scheduled by the second serving cell, and Q2 is greater than 1.

As an auxiliary embodiment of this sub-embodiment, the Q2 serving cells respectively adopt Q2 different serving cell identities.

As an additional embodiment of this sub-embodiment, the Q2 cells occupy Q2 non-overlapping frequency bands, respectively.

As an auxiliary embodiment of this sub-embodiment, the Q2 serving cells are Q2 CCs respectively.

As a sub-embodiment of this embodiment, the second set of search spaces is associated to a CORESET.

As a sub-embodiment of this embodiment, the second set of search spaces is associated to a CORESET pool.

As a sub-embodiment of this embodiment, the second set of search spaces includes M2 control channel alternatives, and M12 is a positive integer greater than 1.

As an auxiliary embodiment of this sub-embodiment, any one of the M2 control channel candidates uses the second subcarrier spacing.

As an additional embodiment of this sub-embodiment, all control channel alternatives of the M2 control channel alternatives employ the second subcarrier spacing.

As an auxiliary embodiment of this sub-embodiment, at least one control channel alternative among the M2 control channel alternatives employs the second subcarrier spacing.

As an additional embodiment of this sub-embodiment, any one of the M2 control channel alternatives occupies a positive integer number of CCEs.

As an additional embodiment of this sub-embodiment, any of the M2 control channel alternates occupies a positive integer number REs greater than 1.

As an additional embodiment of this sub-embodiment, any one of the M2 control channel alternatives occupies one of 1 control channel element, 2 control channel elements, 4 control channel elements, 8 control channel elements, and 16 control channel elements.

As an auxiliary embodiment of this sub-embodiment, any one of the M2 control channel alternatives is a physical downlink control channel alternative adopting one or more DCI payload sizes.

As an auxiliary embodiment of this sub-embodiment, any one of the M2 control channel alternatives is a time-frequency resource set carrying DCI of a specific one or more formats.

As an embodiment, the first subcarrier spacing and the second subcarrier spacing are different, and whether the control signaling alternative included in the first search space set belongs to the target control signaling alternative set is independent of the second search space set.

As a sub-embodiment of this embodiment, the first set of search spaces is not discarded due to the presence of the second set of search spaces.

As a sub-embodiment of this embodiment, the second set of search spaces is not discarded due to the presence of the first set of search spaces.

As a sub-embodiment of this embodiment, whether the control signaling candidate included in the first search space set belongs to the target control signaling candidate set is related to both a first threshold and a second threshold, where the first threshold is a maximum number of control channel candidates monitored by the first node for one serving cell in one downlink bandwidth section in the first time window at the first subcarrier interval, and the second threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth section in the first time window at the first subcarrier interval.

As a sub-embodiment of this embodiment, whether the control signaling candidate included in the second search space set belongs to the target control signaling candidate set or not is related to both a third threshold and a fourth threshold, where the third threshold is a maximum number of control channel candidates monitored by the first node for one serving cell in one downlink bandwidth portion in the second subcarrier interval and in the first time window, and the fourth threshold is a maximum number of non-overlapping control channel elements monitored by the first node U1 for one serving cell in one downlink bandwidth portion in the second subcarrier interval and in the first time window.

As a sub-embodiment of this embodiment, whether the first set of search spaces is discarded is related to the configuration of the set of search spaces employing the first subcarrier spacing and is independent of the configuration of the set of search spaces employing the second subcarrier spacing.

As an additional embodiment of this sub-embodiment, the configuration of the search space set using the first subcarrier spacing includes the number of search space sets using the first subcarrier spacing.

As an auxiliary embodiment of this sub-embodiment, the configuration of the search space set using the first subcarrier spacing includes the number of PDCCH candidates included in one of the search space sets using the first subcarrier spacing.

As an auxiliary embodiment of this sub-embodiment, the configuration of the search space set using the first subcarrier spacing includes a search space set identifier used by one of the search space sets using the first subcarrier spacing.

As an additional embodiment of this sub-embodiment, the configuration of the search space set using the second subcarrier spacing includes the number of search space sets using the second subcarrier spacing.

As an auxiliary embodiment of this sub-embodiment, the configuration of the search space set using the second subcarrier spacing includes the number of PDCCH candidates included in one of the search space sets using the second subcarrier spacing.

As an auxiliary embodiment of this sub-embodiment, the configuration of the search space set using the second subcarrier spacing includes a search space set identifier used by one of the search space sets using the second subcarrier spacing.

As an embodiment, the first subcarrier spacing and the second subcarrier spacing are the same, a first search space set identification and a second search space set identification are used to identify the first search space set and the second search space set, respectively, the first search space set is associated to a first index, the second search space set is associated to a second index, the first index and the second index are both non-negative integers; the first index and the second index are used together to determine whether a control signaling alternative comprised by the first set of search spaces belongs to the set of target control signaling alternatives.

As a sub-embodiment of this embodiment, the first index is larger than the second index, and the first set of search spaces has a lower priority than the second set of search spaces.

As a sub-embodiment of this embodiment, the first index is greater than the second index, the control signaling alternative included in the first search space set does not belong to the target control signaling alternative set, and the control signaling alternative included in the second search space set belongs to the target control signaling alternative set.

As a sub-embodiment of this embodiment, the first index is smaller than the second index, and the first set of search spaces has a higher priority than the second set of search spaces.

As a sub-embodiment of this embodiment, the first index is smaller than the second index, the control signaling alternative included in the first search space set belongs to the target control signaling alternative set, and the control signaling alternative included in the second search space set does not belong to the target control signaling alternative set.

As a sub-embodiment of this embodiment, the first node U1 is configured with a target search space set group, where a search space set included in the target search space set group is a common search space, the target search space set group includes P1 control channel candidates, and the P1 control channel candidates occupy R1 control channel elements; any control channel candidate among the P1 control channel candidates is one control signaling candidate among the positive integer number of control signaling candidates included in the target control signaling candidate set, and the control signaling candidate included in the target search space set group adopts the first subcarrier interval.

As an additional embodiment of this sub-embodiment, the first search space set includes M1 control channel alternatives, and the number of non-overlapping control channel elements of the first search space set is equal to N1, the M1 is a positive integer greater than 1, the N1 is a positive integer greater than 1; the second set of search spaces includes M2 control channel alternatives, and the number of non-overlapping control channel elements of the second set of search spaces is equal to N2, the M2 is a positive integer greater than 1, the N2 is a positive integer greater than 1; the sum of the P1, the M1 and the M2 is greater than a first threshold, and the sum of the P1 and the M2 is not greater than the first threshold; the sum of the R1, the N1, and the N2 is greater than a second threshold, and the sum of the R1 and the N2 is not greater than the second threshold; the first threshold is a maximum number of control channel alternatives that the first node U1 monitors for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window; the second threshold is a maximum number of non-overlapping control channel elements that the first node U1 monitors for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window.

As a sub-implementation of this embodiment, the first search space set includes M1 control channel alternatives, and the number of non-overlapping control channel elements of the first search space set is equal to N1, the M1 is a positive integer greater than 1, the N1 is a positive integer greater than 1; the second set of search spaces includes M2 control channel alternatives, and the number of non-overlapping control channel elements of the second set of search spaces is equal to N2, the M2 is a positive integer greater than 1, the N2 is a positive integer greater than 1; the sum of the P1, the M1, and the M2 is greater than a first threshold, and the sum of the P1 and the M1 is not greater than the first threshold; the sum of the R1, the N1, and the N2 is greater than a second threshold, and the sum of the R1 and the N1 is not greater than the second threshold; the first threshold is a maximum number of control channel alternatives that the first node U1 monitors for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window; the second threshold is a maximum number of non-overlapping control channel elements that the first node U1 monitors for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window.

As a sub-embodiment of this embodiment, the first index is a serving cell identifier of the first serving cell, and the second index is a serving cell identifier of the second serving cell.

As a sub-embodiment of this embodiment, the first index is equal to the first search space set identification and the second index is equal to the second search space set identification.

As a sub-embodiment of this embodiment, the first index is the CORESET identifier of the CORESET associated with the first search space set, and the second index is the CORESET identifier of the CORESET associated with the second search space set.

As a sub-embodiment of this embodiment, said first search is associated to a first CORESET, said first CORESET belonging to a first CORESET pool, said first index being an identification of said first CORESET pool; the second search is associated to a second CORESET, the second CORESET belonging to a second CORESET pool, the second index being an identification of the second CORESET pool.

As an embodiment, a first threshold is a maximum number of control channel alternatives monitored by the first node U1 for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window, a second threshold is a maximum number of non-overlapping control channel elements monitored by the first node U1 for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window, a number of control channel alternatives monitored by the first node U1 in one downlink bandwidth portion of the first serving cell is not greater than the first threshold, and a number of non-overlapping control channel elements monitored by the first node U1 in one downlink bandwidth portion of the first serving cell is not greater than the second threshold; a third threshold is a maximum number of control channel alternatives monitored by the first node U1 for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in a second time window, a fourth threshold is a maximum number of non-overlapping control channel elements monitored by the first node U1 for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in the second time window, the number of control channel alternatives monitored by the first node U1 in one downlink bandwidth portion of the second serving cell is not greater than the third threshold, and the number of non-overlapping control channel elements monitored by the first node U1 in one downlink bandwidth portion of the second serving cell is not greater than the fourth threshold; the second time window overlaps the first time window, the second subcarrier spacing being used to determine the second time window.

As a sub-embodiment of this embodiment, the second time window is a time slot corresponding to the second subcarrier interval.

As a sub-embodiment of this embodiment, the second time window comprises a positive integer number of time-domain consecutive OFDM symbols.

As a sub-embodiment of this embodiment, the second time window includes a positive integer number of time-domain consecutive OFDM symbols corresponding to the second subcarrier spacing in this application.

As a sub-embodiment of this embodiment, the second time window is a span.

As a sub-embodiment of this embodiment, the second time window is a span corresponding to the second subcarrier spacing in this application.

As a sub-embodiment of this embodiment, the second time window is a time interval with the smallest time interval length between the earliest OFDM symbols in two PDCCH occasions.

As a sub-embodiment of this embodiment, the second time window is a micro-slot (Mini-slot).

As a Sub-embodiment of this embodiment, the second time window is a Sub-slot (Sub-slot).

As a sub-embodiment of this embodiment, the second time window is a slot (slot).

As a sub-embodiment of this embodiment, the second subcarrier spacing is equal to one of 15kHz, 30kHz, 60kHz, 120kHz, 240 kHz.

As an embodiment, the first subcarrier spacing and the second subcarrier spacing in this application are different.

As an embodiment, the duration of the first time window in the time domain and the duration of the second time window in the time domain in the present application are different.

As an embodiment, when the first index is greater than the second index, the control signaling alternative included in the second search space set belongs to the target control signaling alternative set, and the control signaling alternative included in the first search space set does not belong to the target control signaling alternative set; when the first index is smaller than the second index, the control signaling candidates included in the first search space set belong to the target control signaling candidate set, and the control signaling candidates included in the second search space set do not belong to the target control signaling candidate set.

As an example, the first threshold value in this application is the smaller of the first integer and the second integer.

As a sub-embodiment of this embodiment, the first integer is in TS 38.213

The second integer being in TS 38.213

The first subcarrier spacing is used to determine μ.

As a sub-embodiment of this embodiment, the first integer is obtained by the first subcarrier spacing lookup table.

As a sub-embodiment of this embodiment, the second integer is related to the carrier aggregation capability of the first node U1.

As a sub-embodiment of this embodiment, the second integer is related to the pdcch-BlindDetectionCA of the first node U1.

As a sub-embodiment of this embodiment, the second integer is related to a version (Release) of the first node U1.

As a sub-embodiment of this embodiment, the second integer and

it is relevant.

As an example, the third threshold value in the present application is the smaller of the third integer and the fourth integer.

As a sub-embodiment of this embodiment, the third integer is in TS 38.213

The fourth integer being in TS 38.213

The second subcarrier spacing is used to determine μ.

As a sub-embodiment of this embodiment, the third integer is obtained by looking up a table of the second subcarrier spacing.

As a sub-embodiment of this embodiment, the third integer relates to a carrier aggregation capability of the first node U1.

As a sub-embodiment of this embodiment, the fourth integer relates to pdcch-BlindDetectionCA of the first node U1.

As a sub-embodiment of this embodiment, the fourth integer is related to the version (Release) of the first node U1.

As a sub-embodiment of this embodiment, the fourth integer and

it is relevant.

As an example, the second threshold value in the present application is the smaller of the fifth integer and the sixth integer.

As a sub-embodiment of this embodiment, the fifth integer is in TS 38.213

The sixth integer being in TS 38.213

The first subcarrier spacing is used to determine μ.

As a sub-embodiment of this embodiment, the fifth integer is obtained by looking up a table of the first subcarrier spacing.

As a sub-embodiment of this embodiment, the sixth integer relates to the carrier aggregation capability of the first node U1.

As a sub-embodiment of this embodiment, the sixth integer relates to pdcch-BlindDetectionCA of the first node U1.

As a sub-embodiment of this embodiment, the sixth integer is related to the version (Release) of the first node U1.

As a sub-embodiment of this embodiment, the sixth integer and

it is relevant.

As an example, the fourth threshold value in the present application is the smaller of the seventh integer and the eighth integer.

As a sub-embodiment of this embodiment, the seventh integer is in TS 38.213

The eighth integer being in TS 38.213

The second subcarrier spacing is used to determine μ.

As a sub-embodiment of this embodiment, the seventh integer is obtained by looking up a table of the second subcarrier spacing.

As a sub-embodiment of this embodiment, the seventh integer relates to the carrier aggregation capability of the first node U1.

As a sub-embodiment of this embodiment, the eighth integer relates to pdcch-BlindDetectionCA of the first node U1.

As a sub-embodiment of this embodiment, the eighth integer is related to a version (Release) of the first node U1.

As a sub-embodiment of this embodiment, the eighth integer and

it is related.

As an embodiment, the first node U1 in this application is not required (required) to monitor a number of control channel alternatives greater than the first threshold in the active bandwidth part in the first time window with the first subcarrier spacing.

As an example, the first node U1 in this application is not required to monitor a number of control channel elements greater than the second threshold in the active bandwidth portion in the first time window with the first subcarrier spacing.

As an embodiment, the first node U1 in this application is not required (required) to monitor the number of control channel alternatives larger than the third threshold in the active bandwidth part with the second subcarrier spacing in the second time window.

As an example, the first node U1 in this application is not required to monitor a number of control channel elements greater than the fourth threshold in the active bandwidth portion in the second time window with the second subcarrier spacing.

Example 6

Embodiment 6 illustrates a schematic diagram of a first serving cell according to the present application; as shown in fig. 6. In fig. 6, the horizontal axis represents frequency, blocks of circular arc tops filled by left and right oblique lines represent a first serving cell and a target cell, blocks of other circular arc tops represent serving cells belonging to the first scheduled cell set except the target cell in the present application, and a dashed arc with an arrow represents a relationship between scheduling and scheduled, where the arrow starts from a scheduling cell and points to the scheduled cell. As shown in the figure, the first serving cell is capable of scheduling multiple serving cells.

As an embodiment, the frequency domain resource occupied by the target cell belongs to a spectrum resource of LTE or LTE-a.

As an embodiment, the frequency domain resource occupied by the first serving cell belongs to a 5G spectrum resource.

As an embodiment, the frequency domain resource occupied by the target cell is between 450MHz and 6GHz, and the frequency domain resource occupied by the first serving cell is between 24.25GHz and 52.6 GHz.

Example 7

Embodiment 7 illustrates a schematic diagram of a first set of search spaces and a second set of search spaces according to the present application; as shown in fig. 7. In fig. 7, REs occupied by the first search space set is orthogonal to REs occupied by the second search space set.

For one embodiment, the first set of search spaces and the second set of search spaces occupy the same time domain resources.

As an embodiment, the first set of search spaces and the second set of search spaces occupy the same frequency domain resources.

As an embodiment, there is not one RE belonging to both the first set of search spaces and the second set of search spaces.

As an embodiment, the time domain resource occupied by the first search space set and the time domain resource occupied by the second search space set belong to one time unit.

As a sub-embodiment of this embodiment, the duration of the time unit is 1 millisecond.

As a sub-embodiment of this embodiment, the duration of the time unit is one time slot.

As a sub-embodiment of this embodiment, the duration of the time unit is related to the smaller of the first subcarrier spacing and the second subcarrier spacing.

As a sub-embodiment of this embodiment, the duration of the time unit is related to the larger of the first subcarrier spacing and the second subcarrier spacing.

Example 8

Embodiment 8 illustrates a schematic diagram of a first serving cell and a second serving cell according to the present application; as shown in fig. 8. In fig. 8, the horizontal axis represents frequency, the blocks of circular arc tops filled by left and right slashes represent a first serving cell and a second serving cell, the blocks of circular arc tops filled by squares represent the target cells described in this application, and the dashed arcs with arrows start from the scheduling cell and point to the scheduled cell represent the relationship between scheduling and scheduled. As shown in the figure, both the first serving cell and the second serving cell can schedule the target cell.

As an embodiment, the frequency domain resource occupied by the second serving cell belongs to a 5G spectrum resource.

As an embodiment, the frequency domain resource occupied by the target cell is between 450MHz and 6GHz, the frequency domain resource occupied by the first serving cell is between 24.25GHz and 52.6GHz, and the frequency domain resource occupied by the second serving cell is between 24.25GHz and 52.6 GHz.

Example 9

Example 9 illustrates a schematic diagram of a blind detection sequence according to the present application; as shown in fig. 9. In fig. 9, the first search space set and the second search space set respectively use a first subcarrier spacing and a second subcarrier spacing, and the first subcarrier spacing and the second subcarrier spacing are different; the first node is further configured with a third set of search spaces and a fourth set of search spaces; the third search space set and the fourth search space set respectively adopt a first subcarrier interval and a second subcarrier interval; a first threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window, and a second threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window; a third threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in a second time window, and a fourth threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in the second time window; the number of control signaling alternatives included in the first set of search spaces is equal to M1, and the number of non-overlapping CCEs included in the first set of search spaces is equal to N1; the number of control signaling alternatives included in the second set of search spaces is equal to M2, and the number of non-overlapping CCEs included in the first set of search spaces is equal to N2; the M1, N1, M2 and N2 are all positive integers greater than 1.

The first node determines whether to monitor the control signaling alternatives in the first set of search spaces according to the following steps.

In step 901, a first threshold and a second threshold are determined;

in step 902, determining that P1 control signaling alternatives and R1 non-overlapping CCEs are occupied by the CSS employing the first subcarrier spacing, and completing monitoring of the CSS; both P1 and R1 are positive integers greater than 1.

In step 903, it is determined that the difference of the first threshold minus P1 is equal to a first value and the difference of the second threshold minus R1 is equal to a second value;

in step 904, comparing priorities of a third set of search spaces and the first set of search spaces; if the priority of the third search space set is higher, go to step 905; if the first search space set has a higher priority, go to step 906;

in step 905, preferentially allocating the control signaling alternatives with the number of the first value and the non-overlapping CCEs with the number of the second value to the third search space set, and monitoring the third search space set; then judging whether the number of the remaining control signaling alternatives and the number of the non-overlapped CCEs are enough to be used by the first search space, and if so, monitoring the first search space; if not, abandoning monitoring the first search space;

preferentially allocating the control signaling alternatives with the number of the first numerical value and the non-overlapping CCEs with the number of the second numerical value to the first search space set, and monitoring the first search space set in step 906; then judging whether the number of the remaining control signaling alternatives and the number of the non-overlapped CCEs are enough to be used in the third search space, and if so, monitoring the third search space; and if not, abandoning to monitor the third search space.

Similarly, the first node determines whether to monitor the control signaling alternatives in the second set of search spaces according to the following steps.

In step 911, a third threshold and a fourth threshold are determined;

in step 912, determining that the CSS employing the second subcarrier interval occupies P2 control signaling alternatives and R2 non-overlapping CCEs, and completing monitoring of the CSS; both P2 and R2 are positive integers greater than 1.

In step 913, it is determined that the difference of the third threshold minus P2 is equal to a third value and the difference of the fourth threshold minus R2 is equal to a second fourth value;

in step 914, comparing priorities of a fourth set of search spaces and the second set of search spaces; if the priority of the fourth search space set is higher, go to step 915; if the second search space set has a higher priority, go to step 916;

in step 915, preferentially allocating the control signaling alternatives with the number of the third value and the non-overlapping CCEs with the number of the fourth value to the fourth search space set, and monitoring the fourth search space set; then judging whether the number of the remaining control signaling alternatives and the number of the non-overlapped CCEs are enough to be used by the second search space, and if so, monitoring the first and second search spaces; if not, abandoning to monitor the second search space;

in step 916, preferentially allocating the number of control signaling alternatives with the third value and the number of non-overlapping CCEs with the fourth value to the second search space set, and monitoring the second search space set; then judging whether the number of the remaining control signaling alternatives and the number of the non-overlapped CCEs are enough to be used in the fourth search space, and if so, monitoring the fourth search space; and if not, abandoning monitoring the fourth search space.

As an embodiment, the operations of steps 901 to 906 are independent from the operations of steps 911 to 916.

Example 10

Embodiment 10 illustrates a schematic diagram of another blind detection sequence according to the present application; as shown in fig. 10. In fig. 10, the first set of search spaces and the second set of search spaces both employ a first subcarrier spacing; a first threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window, a second threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window; the number of control signaling alternatives included in the first set of search spaces is equal to M1, and the number of non-overlapping CCEs included in the first set of search spaces is equal to N1; the number of control signaling alternatives included in the second set of search spaces is equal to M2, and the number of non-overlapping CCEs included in the first set of search spaces is equal to N2; the M1, N1, M2 and N2 are all positive integers greater than 1.

In step 1001, a first threshold and a second threshold are determined;

in step 1002, determining that P1 control signaling alternatives and R1 non-overlapping CCEs are occupied by the CSS employing the first subcarrier spacing, and completing monitoring of the CSS; both P1 and R1 are positive integers greater than 1.

In step 1003, it is determined that the difference of the first threshold minus P1 is equal to a first value and the difference of the second threshold minus R1 is equal to a second value;

in step 1004, comparing priorities of a second set of search spaces and the first set of search spaces; if the priority of the second search space set is higher, go to step 1005; if the first search space set has a higher priority, go to step 1006;

preferentially allocating the control signaling alternatives with the number of the first numerical value and the non-overlapping CCEs with the number of the second numerical value to the second search space set, and monitoring the second search space set in step 1005; then judging whether the number of the remaining control signaling alternatives and the number of the non-overlapped CCEs are enough to be used by the first search space, and if so, monitoring the first search space; if not, abandoning to monitor the first search space;

preferentially allocating the control signaling alternatives with the number of the first numerical value and the non-overlapping CCEs with the number of the second numerical value to the first search space set, and monitoring the first search space set in step 1006; then judging whether the number of the remaining control signaling alternatives and the number of the non-overlapped CCEs are enough to be used in the second search space, and if so, monitoring the second search space; and if not, abandoning to monitor the second search space.

Example 11

Embodiment 11 illustrates a block diagram of the structure in a first node, as shown in fig. 11. In fig. 11, a first node 1100 comprises a first receiver 1101 and a second receiver 1102.

A first receiver 1101 that receives first information, the first information being used to indicate a first set of search spaces;

a second receiver 1102, configured to monitor a target control signaling alternative set in a first time window, where the target control signaling alternative set includes a positive integer number of control signaling alternatives;

in embodiment 11, the first search space set includes a positive integer number of control signaling alternatives; a frequency domain resource occupied by any control signaling alternative included in the first search space set belongs to a first serving cell, and a first scheduled cell set includes a scheduled cell of the first serving cell; a target cell is a serving cell other than the first serving cell, and whether the first set of scheduled cells includes the target cell is used to determine whether a control signaling alternative included in the first set of search spaces belongs to the target set of control signaling alternatives; the subcarrier interval of the subcarrier occupied by one control signaling alternative in the frequency domain included in the target control signaling alternative set is used for determining the time length of the first time window.

For one embodiment, the first receiver 1102 receives the second information; the second information is used to determine a scheduling cell of the target cell; when the scheduling cell of the target cell includes the first serving cell, the target cell belongs to the first set of scheduled cells; when the scheduling cell of the target cell does not include the first serving cell, the target cell does not belong to the first set of scheduled cells.

As an embodiment, the first subcarrier spacing and the second subcarrier spacing are the same, a first search space set identification and a second search space set identification are used to identify the first search space set and the second search space set, respectively, the first search space set being associated to a first index, the second search space set being associated to a second index, the first index and the second index both being non-negative integers; the first index and the second index are used together to determine whether a control signaling alternative comprised by the first set of search spaces belongs to the set of target control signaling alternatives.

As an embodiment, a first threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth section at the first subcarrier spacing and in the first time window, a second threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth section at the first subcarrier spacing and in the first time window, the number of control channel alternatives monitored by the first node in one downlink bandwidth section of the first serving cell is not greater than the first threshold, and the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth section of the first serving cell is not greater than the second threshold; a third threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in a second time window, a fourth threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in the second time window, the number of control channel alternatives monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the third threshold, and the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the fourth threshold; the second time window overlaps the first time window, the second subcarrier spacing being used to determine the second time window.

For one embodiment, the second receiver 1102 receives a first signaling; the first signaling occupies one or more control signaling alternatives in a positive integer number of control signaling alternatives included in the target control signaling alternative set.

For one embodiment, the first receiver 1101 comprises at least the first 4 of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller/processor 459 of embodiment 4.

For one embodiment, the second receiver 1102 comprises at least the first 4 of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller/processor 459 of embodiment 4.

Example 12

Embodiment 12 illustrates a block diagram of the structure in a second node, as shown in fig. 12. In fig. 12, the second node 1200 comprises a first transmitter 1201 and a second transmitter 1202.

A first transmitter 1201 that transmits first information, the first information being used to indicate a first set of search spaces;

a second transmitter 1202, configured to determine a target control signaling alternative set in a first time window, where the target control signaling alternative set includes a positive integer number of control signaling alternatives;

embodiment 12, the first set of search spaces comprises a positive integer number of control signaling alternatives; the frequency domain resource occupied by any control signaling alternative included in the first search space set belongs to a first serving cell, and the first scheduled cell set includes a scheduled cell of the first serving cell; a target cell is a serving cell other than the first serving cell, and whether the first set of scheduled cells includes the target cell is used to determine whether a control signaling alternative included in the first set of search spaces belongs to the target set of control signaling alternatives; the subcarrier interval of the subcarrier occupied by one control signaling alternative in the frequency domain included in the target control signaling alternative set is used to determine the time length of the first time window.

For one embodiment, the first transmitter 1201 transmits second information; the second information is used to determine a scheduling cell of the target cell; when a scheduling cell of the target cell includes the first serving cell, the target cell belongs to the first scheduled cell set; when the scheduling cell of the target cell does not include the first serving cell, the target cell does not belong to the first set of scheduled cells.

As an embodiment, any one of the serving cells included in the first serving cell, the target cell and the first set of scheduled cells belongs to a first cell group, and the target cell is a master cell of the first cell group.

As an embodiment, the recipient of the first information comprises a first node; a first threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth segment at the first subcarrier spacing and in the first time window, a second threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth segment at the first subcarrier spacing and in the first time window, the number of control channel alternatives monitored by the first node in one downlink bandwidth segment of the first serving cell is not greater than the first threshold, and the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth segment of the first serving cell is not greater than the second threshold; a third threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in a second time window, a fourth threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in the second time window, the number of control channel alternatives monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the third threshold, and the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the fourth threshold; the second time window overlaps the first time window, the second subcarrier spacing being used to determine the second time window.

For one embodiment, the second transmitter 1202 sends the first signaling; the first signaling occupies one or more control signaling alternatives in a positive integer number of control signaling alternatives included in the target control signaling alternative set.

For one embodiment, the first transmitter 1201 includes at least the first 4 of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 of embodiment 4.

For one embodiment, the second transmitter 1202 includes at least the first 4 of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 of embodiment 4.

Example 13

Embodiment 13 illustrates a flow chart of the first signaling, as shown in fig. 13. In FIG. 13, the first node U3 communicates with the second node N4 via a wireless link. It should be noted that the sequence in the present embodiment does not limit the signal transmission sequence and the implementation sequence in the present application.

For theFirst node U3In step S30, the first signaling is received.

For theSecond node N4In step S40, the first signaling is sent.

In embodiment 13, the first signaling occupies one or more control signaling alternatives among a positive integer number of control signaling alternatives included in the target control signaling alternative set.

As an embodiment, the first signaling is PDCCH.

As an embodiment, the first signaling is a downlink grant.

As an embodiment, the first signaling is an uplink grant.

As an embodiment, the first signaling is physical layer signaling.

As an embodiment, the first signaling is used for scheduling one data channel.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. First node and second node in this application include but not limited to cell-phone, panel computer, notebook, network card, low-power consumption equipment, eMTC equipment, NB-IoT equipment, vehicle communication equipment, vehicles, vehicle, RSU, aircraft, unmanned aerial vehicle, wireless communication equipment such as remote control plane. The base station in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, an eNB, a gNB, a transmission and reception node TRP, a GNSS, a relay satellite, a satellite base station, an over-the-air base station, an RSU, and other wireless communication devices.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A first node for use in wireless communications, comprising:

a second receiver, configured to monitor a target control signaling alternative set in a first time window, where the target control signaling alternative set includes a positive integer number of control signaling alternatives;

2. The first node of claim 1, wherein the first receiver receives second information; the second information is used to determine a scheduling cell of the target cell; when the scheduling cell of the target cell includes the first serving cell, the target cell belongs to the first set of scheduled cells; when the scheduling cell of the target cell does not include the first serving cell, the target cell does not belong to the first set of scheduled cells.

3. The first node according to any of claims 1 or 2, wherein any of the serving cells comprised by the first serving cell, the target cell and the first set of scheduled cells belong to a first cell group, the target cell being a master cell of the first cell group.

4. The first node according to any of claims 1 or 2, wherein the control signaling alternatives comprised by the first set of search spaces belong to the target set of control signaling alternatives when the first set of scheduled cells does not comprise the target cell.

5. The first node according to any of claims 1 or 2, wherein when the first set of scheduled cells comprises the target cell; the first information is used to indicate a second search space set, the second search space set includes a positive integer number of control signaling alternatives, frequency domain resources occupied by the second search space belong to a second serving cell, any serving cell in a second scheduled cell set can be scheduled by the second serving cell, the second scheduled cell set includes the target cell; the subcarrier interval of the subcarrier occupied by the control signaling alternative in the first search space set in the frequency domain is a first subcarrier interval, and the subcarrier interval of the subcarrier occupied by the control signaling alternative in the second search space set in the frequency domain is a second subcarrier interval; the first subcarrier spacing and the second subcarrier spacing are commonly used for determining whether the control signaling alternatives included in the first search space set belong to the target control signaling alternative set.

6. The first node of claim 5, wherein the first subcarrier spacing and the second subcarrier spacing are different, and wherein whether the control signaling candidate included in the first search space set belongs to the target control signaling candidate set is independent of the second search space set.

7. The first node of claim 5, wherein the first subcarrier spacing and the second subcarrier spacing are the same, wherein a first search space set identifier and a second search space set identifier are used to identify the first search space set and the second search space set, respectively, wherein the first search space set is associated with a first index and the second search space set is associated with a second index, and wherein the first index and the second index are both non-negative integers; the first index and the second index are used together to determine whether a control signaling alternative comprised by the first set of search spaces belongs to the set of target control signaling alternatives.

8. The first node of claim 6, wherein a first threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window, wherein a second threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window, wherein the number of control channel alternatives monitored by the first node in one downlink bandwidth portion of the first serving cell is not greater than the first threshold, and wherein the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth portion of the first serving cell is not greater than the second threshold; a third threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in a second time window, a fourth threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in the second time window, the number of control channel alternatives monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the third threshold, and the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the fourth threshold; the second time window overlaps the first time window, the second subcarrier spacing being used to determine the second time window.

9. The first node according to claim 7, wherein when the first index is larger than the second index, the control signaling alternative included in the second search space set belongs to the target control signaling alternative set, and the control signaling alternative included in the first search space set does not belong to the target control signaling alternative set; when the first index is smaller than the second index, the control signaling candidates included in the first search space set belong to the target control signaling candidate set, and the control signaling candidates included in the second search space set do not belong to the target control signaling candidate set.

10. A second node for use in wireless communications, comprising:

11. The second node of claim 10,

the first transmitter transmits second information;

wherein the second information is used to determine a scheduling cell of the target cell; when a scheduling cell of the target cell includes the first serving cell, the target cell belongs to the first scheduled cell set; when the scheduling cell of the target cell does not include the first serving cell, the target cell does not belong to the first set of scheduled cells.

12. Second node according to claim 10 or 11, wherein any of the serving cells comprised by the first serving cell, the target cell and the first set of scheduled cells belongs to a first cell group, the target cell being a primary cell of the first cell group.

13. The second node according to any of claims 10 or 11, characterized in that when the first set of scheduled cells does not comprise the target cell, the control signaling alternatives comprised by the first set of search spaces belong to the target set of control signaling alternatives.

14. The second node according to any of claims 10 or 11, characterized in that when the first set of scheduled cells comprises the target cell; the first information is used to indicate a second search space set, the second search space set includes a positive integer number of control signaling alternatives, frequency domain resources occupied by the second search space belong to a second serving cell, any serving cell in a second scheduled cell set can be scheduled by the second serving cell, the second scheduled cell set includes the target cell; the subcarrier interval of the subcarrier occupied by the control signaling alternative in the first search space set in the frequency domain is a first subcarrier interval, and the subcarrier interval of the subcarrier occupied by the control signaling alternative in the second search space set in the frequency domain is a second subcarrier interval; the first subcarrier spacing and the second subcarrier spacing are used together to determine whether the control signaling candidate included in the first search space set belongs to the target control signaling candidate set.

15. The second node according to claim 14, wherein the first subcarrier spacing and the second subcarrier spacing are different, and wherein whether the control signaling candidate included in the first search space set belongs to the target control signaling candidate set is independent of the second search space set.

16. The second node according to claim 14, wherein the first subcarrier spacing and the second subcarrier spacing are the same, wherein a first search space set identification and a second search space set identification are used for identifying the first search space set and the second search space set, respectively, wherein the first search space set is associated to a first index and the second search space set is associated to a second index, wherein the first index and the second index are both non-negative integers; the first index and the second index are used together to determine whether a control signaling alternative comprised by the first set of search spaces belongs to the set of target control signaling alternatives.

17. The second node of claim 15, wherein the recipient of the first information comprises the first node; a first threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window, a second threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth portion at the first subcarrier spacing and in the first time window, the number of control channel alternatives monitored by the first node in one downlink bandwidth portion of the first serving cell is not greater than the first threshold, and the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth portion of the first serving cell is not greater than the second threshold; a third threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in a second time window, a fourth threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in the second time window, the number of control channel alternatives monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the third threshold, and the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the fourth threshold; the second time window overlaps the first time window, the second subcarrier spacing being used to determine the second time window.

18. The second node according to claim 16, wherein when the first index is larger than the second index, the control signaling alternative included in the second search space set belongs to the target control signaling alternative set, and the control signaling alternative included in the first search space set does not belong to the target control signaling alternative set; when the first index is smaller than the second index, the control signaling candidates included in the first search space set belong to the target control signaling candidate set, and the control signaling candidates included in the second search space set do not belong to the target control signaling candidate set.

19. The second node according to any of claims 10 or 11, characterized in that the second transmitter sends a first signaling; the first signaling occupies one or more control signaling alternatives in a positive integer number of control signaling alternatives included in the target control signaling alternative set.

20. A method in a first node in wireless communication, comprising:

wherein the first search space set comprises a positive integer number of control signaling alternatives; the frequency domain resource occupied by any control signaling alternative included in the first search space set belongs to a first serving cell, and the first scheduled cell set includes a scheduled cell of the first serving cell; a target cell is a serving cell other than the first serving cell, and whether the first set of scheduled cells includes the target cell is used to determine whether a control signaling alternative included in the first set of search spaces belongs to the target set of control signaling alternatives; the subcarrier interval of the subcarrier occupied by one control signaling alternative in the frequency domain included in the target control signaling alternative set is used to determine the time length of the first time window.

21. A method in a first node according to claim 20, comprising:

receiving second information;

22. Method in a first node according to claim 20 or 21, characterised in that any of the serving cells comprised by the first serving cell, the target cell and the first set of scheduled cells belongs to a first cell group, the target cell being the primary cell of the first cell group.

23. The method in a first node according to any of claims 20 or 21, wherein the control signaling alternatives comprised in the first set of search spaces belong to the target set of control signaling alternatives when the first set of scheduled cells does not comprise the target cell.

24. A method in a first node according to any of claims 20 or 21, characterised in that when the first set of scheduled cells comprises the target cell; the first information is used to indicate a second search space set, the second search space set includes a positive integer number of control signaling alternatives, frequency domain resources occupied by the second search space belong to a second serving cell, any serving cell in a second scheduled cell set can be scheduled by the second serving cell, the second scheduled cell set includes the target cell; the subcarrier interval of the subcarrier occupied by the control signaling alternative in the first search space set in the frequency domain is a first subcarrier interval, and the subcarrier interval of the subcarrier occupied by the control signaling alternative in the second search space set in the frequency domain is a second subcarrier interval; the first subcarrier spacing and the second subcarrier spacing are commonly used for determining whether the control signaling alternatives included in the first search space set belong to the target control signaling alternative set.

25. The method in the first node according to claim 24, wherein the first subcarrier spacing and the second subcarrier spacing are different, and wherein whether the control signaling alternatives comprised in the first set of search spaces belong to the target set of control signaling alternatives is independent of the second set of search spaces.

26. The method in a first node according to claim 24, wherein the first subcarrier spacing and the second subcarrier spacing are the same, wherein a first search space set identification and a second search space set identification are used for identifying the first search space set and the second search space set, respectively, wherein the first search space set is associated to a first index and the second search space set is associated to a second index, wherein the first index and the second index are both non-negative integers; the first index and the second index are used together to determine whether a control signaling alternative comprised by the first set of search spaces belongs to the set of target control signaling alternatives.

27. The method in a first node according to claim 25, wherein a first threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth part at the first subcarrier spacing and in the first time window, wherein a second threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth part at the first subcarrier spacing and in the first time window, the number of control channel alternatives monitored by the first node in a downlink bandwidth fraction of the first serving cell is not greater than the first threshold, and the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth portion of the first serving cell is not greater than the second threshold; a third threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in a second time window, a fourth threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in the second time window, the number of control channel alternatives monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the third threshold, and the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the fourth threshold; the second time window overlaps the first time window, the second subcarrier spacing being used to determine the second time window.

28. The method in the first node according to claim 26, wherein when the first index is larger than the second index, the control signaling alternative included in the second search space set belongs to the target control signaling alternative set, and the control signaling alternative included in the first search space set does not belong to the target control signaling alternative set; when the first index is smaller than the second index, the control signaling candidates included in the first search space set belong to the target control signaling candidate set, and the control signaling candidates included in the second search space set do not belong to the target control signaling candidate set.

29. A method in a second node in wireless communication, comprising:

30. A method in a second node according to claim 29, comprising:

sending the second information;

31. Method in a second node according to claim 29 or 30, characterised in that any of the serving cells comprised by the first serving cell, the target cell and the first set of scheduled cells belongs to a first cell group, the target cell being the primary cell of the first cell group.

32. The method in a second node according to claim 29 or 30, characterised in that when the first set of scheduled cells does not comprise the target cell, the control signalling alternatives comprised by the first set of search spaces belong to the target set of control signalling alternatives.

33. A method in a second node according to claim 29 or 30, characterised in that when the first set of scheduled cells comprises the target cell; the first information is used to indicate a second search space set, the second search space set includes a positive integer number of control signaling alternatives, frequency domain resources occupied by the second search space belong to a second serving cell, any serving cell in a second scheduled cell set can be scheduled by the second serving cell, the second scheduled cell set includes the target cell; the subcarrier interval of the subcarrier occupied by the control signaling alternative in the first search space set in the frequency domain is a first subcarrier interval, and the subcarrier interval of the subcarrier occupied by the control signaling alternative in the second search space set in the frequency domain is a second subcarrier interval; the first subcarrier spacing and the second subcarrier spacing are commonly used for determining whether the control signaling alternatives included in the first search space set belong to the target control signaling alternative set.

34. The method in the second node according to claim 33, wherein the first subcarrier spacing and the second subcarrier spacing are different, and wherein whether the control signaling alternatives comprised in the first set of search spaces belong to the target set of control signaling alternatives is independent of the second set of search spaces.

35. Method in a second node according to claim 33, wherein the first subcarrier spacing and the second subcarrier spacing are the same, wherein a first search space set identification and a second search space set identification are used for identifying the first search space set and the second search space set, respectively, wherein the first search space set is associated to a first index and the second search space set is associated to a second index, wherein the first index and the second index are both non-negative integers; the first index and the second index are used together to determine whether a control signaling alternative comprised by the first set of search spaces belongs to the set of target control signaling alternatives.

36. A method in a second node according to claim 34, characterised in that the recipient of the first information comprises the first node; a first threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth segment at the first subcarrier spacing and in the first time window, a second threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth segment at the first subcarrier spacing and in the first time window, the number of control channel alternatives monitored by the first node in one downlink bandwidth segment of the first serving cell is not greater than the first threshold, and the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth segment of the first serving cell is not greater than the second threshold; a third threshold is a maximum number of control channel alternatives monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in a second time window, a fourth threshold is a maximum number of non-overlapping control channel elements monitored by the first node for one serving cell in one downlink bandwidth portion at the second subcarrier spacing and in the second time window, the number of control channel alternatives monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the third threshold, and the number of non-overlapping control channel elements monitored by the first node in one downlink bandwidth portion of the second serving cell is not greater than the fourth threshold; the second time window overlaps the first time window, the second subcarrier spacing being used to determine the second time window.

37. The method in the second node according to claim 35, wherein when the first index is larger than the second index, the control signaling alternative included in the second search space set belongs to the target control signaling alternative set, and the control signaling alternative included in the first search space set does not belong to the target control signaling alternative set; when the first index is smaller than the second index, the control signaling candidates included in the first search space set belong to the target control signaling candidate set, and the control signaling candidates included in the second search space set do not belong to the target control signaling candidate set.

38. A method in a second node according to any of claims 29 or 30, comprising:

sending a first signaling;