CN114944902B

CN114944902B - Method and apparatus in a node for wireless communication

Info

Publication number: CN114944902B
Application number: CN202210510698.6A
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: 2019-03-22
Filing date: 2019-03-22
Publication date: 2024-02-27
Anticipated expiration: 2039-03-22
Also published as: CN114944902A; CN114944899A; CN111726212A; CN111726212B

Abstract

A method and apparatus in a node for wireless communication is disclosed. The first node firstly receives first information, then detects first signaling in a first time-frequency resource pool in a first frequency domain interval, and operates first wireless signals in a second time-frequency resource set in a second frequency domain interval; the first information is used to determine K0; the first signaling is used to determine the second set of time-frequency resources; the first time-frequency resource pool comprises K1 first-type candidate resource sets, and the first signaling occupies one of the K1 first-type candidate resource sets; the first signaling and the first wireless signal respectively adopt a first subcarrier interval and a second subcarrier interval; the relative relationship of the K0 and the K1 is related to the second subcarrier spacing; the relation between the subcarrier intervals of the scheduled carrier and the scheduled carrier is considered in the blind detection design, so that the overall blind detection efficiency is improved.

Description

Method and apparatus in a node for wireless communication

This application is a divisional application of the following original applications:

filing date of the original application: 22 nd 2019, 03 th

Number of the original application: 201910222848.1

-the name of the invention of the original application: method and apparatus in a node 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 scheme and apparatus for control signaling design for cross-frequency domain interval scheduling.

Background

Future wireless communication systems have more and more diversified application scenes, and different application scenes have different performance requirements on the system. In order to meet different performance requirements of multiple application scenarios, a New air interface technology (NR, new Radio) (or Fifth Generation, 5G) is decided to be researched in the 3GPP (3 rd Generation Partner Project, third Generation partnership project) RAN (Radio Access Network ) #72 times, and compared with LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced, enhanced Long-Term Evolution) systems, one important feature of NR system Phase-1 (stage 1) is to support transmission of Radio signals using different SCS (Subcarrier Spacing ) simultaneously in different frequency domain intervals, so as to improve flexibility of the system and meet different performance and time delay requirements.

Scheduling between two different SCSs is not supported in the current NR system, i.e. PDCCH (Physical Downlink Control Channel ) carrying scheduling and scheduled data channel must be the same SCS. Starting from RANs 1#96 times, 3GPP starts to discuss the related design problem of PDCCH blind detection in NR Release-16 when supporting scheduling between different SCS.

Disclosure of Invention

In the current NR system, a UE (User Equipment) calculates the maximum blind detection number and the maximum number of orthogonal CCEs (Control Channel Element, control channel elements) that need to be supported in one Slot (Slot) and one BWP (Bandwidth Part) based on SCS of a scheduled carrier, so as to control the complexity of the UE. In the RAN #96 cases, the latest progress shows that when cross-carrier scheduling between different SCSs is supported, the blind detection and the limitation of the number of CCEs are determined by the SCS of the scheduling CC (Component Carrier ).

In normal cross-CC scheduling, one CC is not scheduled by two CCs at the same time, i.e., the UE does not blindly detect DCI for one CC on more than 2 CCs at the same time. However, the above limitation may be changed in LAA (Licensed Assisted Access, grant assisted access), and an unlicensed CC may be scheduled by both an unlicensed CC and a grant CC, in which case if the unlicensed CC is a SCS smaller CC and the grant CC is a SCS larger CC, the blind detection times on the grant CC will be too much occupied by the unlicensed CC according to the existing Agreement, thereby affecting the self-scheduling of the grant CC.

In view of the above, the present application discloses a solution. It should be noted that, in the case of no conflict, the embodiments of the first node and the second node and features in the embodiments of the present application may be applied to the base station and the UE (User Equipment), and at the same time, in the case of no conflict, the embodiments of the present application and features in the embodiments of the present application may be arbitrarily combined with each other.

The application discloses a method used in a first node of wireless communication, characterized by comprising:

receiving first information;

detecting a first signaling in a first time-frequency resource pool in a first frequency domain interval;

operating the first wireless signal in a second set of time-frequency resources in a second frequency domain interval;

wherein the first information is used to determine K0, the K0 being a positive integer greater than 1; the first signaling is used to determine the second set of time-frequency resources; the first signaling is physical layer signaling; the first time-frequency resource pool comprises K1 first-type candidate resource sets, and the first signaling occupies one of the K1 first-type candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt a first subcarrier interval, and the subcarriers occupied by the first wireless signal in the frequency domain adopt a second subcarrier interval; the relative relationship of the K0 and the K1 is related to the second subcarrier spacing; the K1 is a positive integer greater than 1; the operation is a reception or the operation is a transmission.

As an embodiment, the method in the first node comprises:

receiving first information;

receiving the first wireless signal in a second set of time-frequency resources in a second frequency domain interval;

wherein the first information is used to determine K0, the K0 being a positive integer greater than 1; the first signaling is used to determine the second set of time-frequency resources; the first signaling is physical layer signaling; the first time-frequency resource pool comprises K1 first-type candidate resource sets, and the first signaling occupies one of the K1 first-type candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt a first subcarrier interval, and the subcarriers occupied by the first wireless signal in the frequency domain adopt a second subcarrier interval; the relative relationship of the K0 and the K1 is related to the second subcarrier spacing; the K1 is a positive integer greater than 1.

As an embodiment, the method in the first node comprises:

receiving first information;

Transmitting the first wireless signal in a second set of time-frequency resources in a second frequency domain interval;

As an embodiment, one benefit of the above method is that: the K0 is the blind detection number in one BWP in one time slot for a specific SCS, and further, for SCS of different scheduled BWP, the K0 is scaled (cut) to ensure that there is enough blind detection number to be left for self-scheduling of the first frequency domain interval, so as to ensure reasonable allocation of PDCCH candidates (candidates) on each scheduled SCS.

As an embodiment, another benefit of the above method is that: and determining the K1 through the K0 and the second sub-carrier interval, and flexibly configuring the candidate used for scheduling the second sub-carrier interval, so that the system design is simplified, and the control signaling overhead is reduced.

According to one aspect of the application, the method is characterized in that the first time-frequency resource pool comprises L1 second class candidate resource sets; any one of the K1 first-type candidate resource sets includes a positive integer of the L1 second-type candidate resource sets, where L1 is related to the second subcarrier spacing; the time-frequency resources occupied by any two second type candidate resource sets in the L1 second type candidate resource sets are orthogonal; the L1 is a positive integer greater than 1.

As an embodiment, one benefit of the above method is that: and establishing a relation between the number of orthogonal CCEs allocated to the data channel of the second subcarrier interval and the second subcarrier interval, further optimizing the design of blind detection, avoiding the reduction of the orthogonal CCEs of self-scheduling caused by the fact that more orthogonal CCEs are reserved for the data channel adopting the second subcarrier interval, and further avoiding the reduction of the scheduling opportunity of self-scheduling.

According to an aspect of the present application, the above method is characterized in that the first node detects the first signaling in the first time-frequency resource pool by performing no more than the K1 blind detections, and the K1 blind detections are performed on the K1 candidate resource sets, respectively.

According to one aspect of the present application, the method is characterized in that the K1 candidate resource sets of the first type are directed to a first format, and the first signaling adopts the first format.

As an embodiment, the above method has the following advantages: the blind detection times and the scaling of the number of orthogonal CCEs can be configured for the DCI format, and are not limited to the configuration of the SearchSpace (search space), so that the configuration flexibility is further improved.

According to an aspect of the present application, the method is characterized in that the first information includes first sub-information, the first sub-information is used to determine a first coefficient, the first coefficient corresponds to the second subcarrier spacing, and the K1 is equal to a product of the K0 and the first coefficient.

As an embodiment, the above method has the following advantages: the first coefficient is configured through high-level signaling, so that the adjustment of the K1 is easier to realize in an actual system.

According to one aspect of the present application, the above method is characterized by comprising:

receiving second information;

wherein the second information is used to determine the first time-frequency resource pool.

According to an aspect of the present application, the above method is characterized in that the first frequency domain interval belongs to licensed spectrum resources, and the second frequency domain interval belongs to unlicensed spectrum resources.

channel sensing is performed over a second frequency domain interval to determine whether the channel is idle.

According to an aspect of the present application, the above method is characterized in that the first signaling is used by the first node to determine that channel detection for the second frequency domain interval is not required before the first wireless signal is transmitted to determine that the second frequency domain interval is idle.

According to an aspect of the present application, the above method is characterized in that the first signaling is used by the first node to determine that the second frequency domain interval is idle before the first node transmits the first wireless signal.

According to an aspect of the present application, the above method is characterized in that the first coefficient is only valid when the second frequency domain interval belongs to an unlicensed frequency domain resource.

According to an aspect of the present application, the above method is characterized in that the first coefficient is only valid when the first subcarrier spacing is larger than the second subcarrier spacing.

The application discloses a method used in a second node of wireless communication, characterized by comprising the following steps:

transmitting first information;

transmitting a first signaling in a first time-frequency resource pool in a first frequency domain interval;

performing the first wireless signal in a second set of time-frequency resources in a second frequency domain interval;

wherein the first information is used to determine K0, the K0 being a positive integer greater than 1; the first signaling is used to determine the second set of time-frequency resources; the first signaling is physical layer signaling; the first time-frequency resource pool comprises K1 first-type candidate resource sets, and the first signaling occupies one of the K1 first-type candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt a first subcarrier interval, and the subcarriers occupied by the first wireless signal in the frequency domain adopt a second subcarrier interval; the relative relationship of the K0 and the K1 is related to the second subcarrier spacing; the K1 is a positive integer greater than 1; the execution is either transmission or reception.

As an embodiment, the method in the second node comprises:

transmitting first information;

As an embodiment, the method in the second node comprises:

transmitting first information;

transmitting second information;

According to an aspect of the present application, the above method is characterized in that the first signaling is used to indicate that the first node does not need to perform channel detection for the second frequency domain interval to determine that the second frequency domain interval is idle before transmitting the first wireless signal.

According to an aspect of the present application, the above method is characterized in that the first signaling is used to indicate that the second frequency domain interval is idle before the first node in the present application transmits the first wireless signal.

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

a first receiver that receives first information;

a second receiver detecting a first signaling in a first time-frequency resource pool in a first frequency domain interval;

a first transceiver operating the first wireless signal in a second set of time-frequency resources in a second frequency domain interval;

According to an aspect of the present application, the first node is characterized by comprising:

a first receiver that receives first information;

a first transceiver that receives a first wireless signal in a second set of time-frequency resources in a second frequency domain interval;

a first receiver that receives first information;

a first transceiver transmitting a first wireless signal in a second set of time-frequency resources in a second frequency domain interval;

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

a first transmitter that transmits first information;

a second transceiver transmitting first signaling in a first time-frequency resource pool in a first frequency domain interval;

A third transceiver performing the first wireless signal in a second set of time-frequency resources in a second frequency domain interval;

According to an aspect of the present application, the second node is characterized by comprising:

a first transmitter that transmits first information;

a third transceiver transmitting the first wireless signal in a second set of time-frequency resources in a second frequency domain interval;

a first transmitter that transmits first information;

a third transceiver that receives the first wireless signal in a second set of time-frequency resources in a second frequency domain interval;

As an example, compared to the conventional solution, the present application has the following advantages:

the K0 is the blind detection times in a BWP in a time slot under a specific SCS, and K0 is further subjected to Scaling (clipping) aiming at SCSs of different scheduled BWPs so as to ensure that enough blind detection times can be reserved for self-scheduling of the first frequency domain interval, and reasonable allocation of PDCCH candidates (candidates) on each scheduled SCS is ensured;

determining the K1 through the K0 and the second subcarrier interval, and simplifying the system design and reducing the control signaling overhead while flexibly configuring the candidate used for scheduling the second subcarrier interval;

establishing a relation between the number of orthogonal CCEs allocated to the data channel of the second subcarrier spacing and the second subcarrier spacing, further optimizing the design of blind detection, and avoiding the reduction of self-scheduling orthogonal CCEs caused by the reservation of more orthogonal CCEs for the data channel adopting the second subcarrier spacing; thereby avoiding reducing the scheduling opportunity of self-scheduling;

the above-mentioned blind detection times and scaling of the number of orthogonal CCEs can be configured for DCI formats, not limited to the configuration of the search space, and further improves the flexibility of configuration.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following 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 one embodiment of the present application;

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

FIG. 4 shows a schematic diagram of a first communication device and a second communication device according to one embodiment of the present application;

FIG. 5 illustrates a flow chart of first information according to one embodiment of the present application;

fig. 6 shows a flow chart of a first wireless signal according to one embodiment of the present application;

FIG. 7 shows a schematic diagram of a K1 candidate resource set of a first type according to the present application;

FIG. 8 is a schematic diagram of one L1 sets of candidate resources of a second type according to the present application;

FIG. 9 illustrates a flow chart for performing channel sensing to determine whether a channel is idle in accordance with one embodiment of the present application;

FIG. 10 illustrates a flow chart of energy detection in a target time sub-pool according to one embodiment of the present application;

Fig. 11 shows a flowchart of determining whether to transmit a first wireless signal based on whether a channel is idle in accordance with one embodiment of the present application;

FIG. 12 shows a schematic diagram of a time sub-pool according to the present application;

FIG. 13 shows a schematic representation of a first message according to the present application;

FIG. 14 shows a schematic diagram of another first information according to the present application;

fig. 15 shows a schematic diagram of a first time-frequency resource pool according to the present application;

FIG. 16 shows a schematic representation of a first frequency domain interval and a second frequency domain interval according to the present application;

FIG. 17 illustrates a block diagram of a structure for use in a first node according to one embodiment of the present application;

fig. 18 shows a block diagram of a structure used in a second node according to an embodiment of the present application.

Detailed Description

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

Example 1

Embodiment 1 illustrates a process 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 receives first information in step 101, detects first signaling in a first time-frequency resource pool in a first frequency domain interval in step 102, and operates a first wireless signal in a second time-frequency resource set in a second frequency domain interval in step 103.

In embodiment 1, the first information is used to determine K0, the K0 being a positive integer greater than 1; the first signaling is used to determine the second set of time-frequency resources; the first signaling is physical layer signaling; the first time-frequency resource pool comprises K1 first-type candidate resource sets, and the first signaling occupies one of the K1 first-type candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt a first subcarrier interval, and the subcarriers occupied by the first wireless signal in the frequency domain adopt a second subcarrier interval; the relative relationship of the K0 and the K1 is related to the second subcarrier spacing; the K1 is a positive integer greater than 1; the operation is a reception or the operation is a transmission.

As one embodiment, the first node receives the first wireless signal in a second set of time-frequency resources in a second frequency domain interval.

As an embodiment, the first node transmits the first wireless signal in a second set of time-frequency resources in a second frequency domain interval.

As an embodiment, detecting the first signaling in the first time-frequency resource pool in the first frequency domain interval by the sentence includes: the first node correctly receives the first signaling in a first time-frequency resource pool in the first frequency domain interval.

As an embodiment, detecting the first signaling in the first time-frequency resource pool in the first frequency domain interval by the sentence includes: the first node does not correctly receive the first signaling in a first time-frequency resource pool in the first frequency domain interval.

As an embodiment, detecting the first signaling in the first time-frequency resource pool in the first frequency domain interval by the sentence includes: the first node blindly detects the first signaling in a first time-frequency resource pool in the first frequency domain interval.

As a sub-embodiment of this embodiment, the meaning of the blind detection includes: the first node does not know which REs (Resource elements) in the first time-frequency Resource pool the first signaling occupies until it detects the first signaling.

As a sub-embodiment of this embodiment, the meaning of the blind detection includes: the first node determines that the first signaling was received correctly by a CRC (Cyclic Redundancy Check ) carried by the first signaling.

As a sub-embodiment of this embodiment, the meaning of the blind detection includes: the first node determines which REs in the first time-frequency resource pool are occupied by the first signaling through energy detection.

As an embodiment, the first subcarrier spacing is equal to 15KHz (kilohertz), or the first subcarrier spacing is equal to 30KHz, or the first subcarrier spacing is equal to 60KHz, or the first subcarrier spacing is equal to 120KHz.

As an embodiment, the second subcarrier spacing is equal to 15KHz, or the second subcarrier spacing is equal to 30KHz, or the second subcarrier spacing is equal to 60KHz, or the second subcarrier spacing is equal to 120KHz.

As an embodiment, the second subcarrier spacing is equal to the first subcarrier spacing, and the K0 is equal to the K1.

As one embodiment, the relative relationship of the K0 and the K1 includes: a ratio of said K0 to said K1.

As one embodiment, the relative relationship of the K0 and the K1 includes: a ratio of said K1 to said K0.

As one embodiment, the relative relationship of the K0 and the K1 includes: the difference between the K0 and the K1.

As one embodiment, the relative relationship of the K0 and the K1 includes: the difference between the K1 and the K0.

As an embodiment, the meaning of the above sentence that the relative relationship between K0 and K1 is related to the second subcarrier spacing includes: the second subcarrier spacing is used to determine a relative relationship of the K0 and the K1.

As an embodiment, the meaning of the above sentence that the relative relationship between K0 and K1 is related to the second subcarrier spacing includes: the ratio of the K0 to the K1 is related to the ratio of the second subcarrier spacing to the first subcarrier spacing.

As an embodiment, the meaning of the above sentence that the relative relationship between K0 and K1 is related to the second subcarrier spacing includes: the difference between the K0 and the K1 is related to the difference between the second subcarrier spacing and the first subcarrier spacing.

As an embodiment, the meaning of the above sentence that the relative relationship between K0 and K1 is related to the second subcarrier spacing includes: the second subcarrier spacing is less than the first subcarrier spacing, and the K1 is less than the K0.

As an embodiment, the meaning of the above sentence that the relative relationship between K0 and K1 is related to the second subcarrier spacing includes: the second subcarrier spacing is greater than or equal to the first subcarrier spacing, and the K1 is equal to the K0.

As an embodiment, when the second subcarrier spacing is equal to the first subcarrier spacing, the maximum number of blind detections that can be supported in the first time-frequency resource pool is equal to K0.

As an embodiment, the first time-frequency resource pool corresponds to a CORESET (Control Resource Set, control resource group).

As an embodiment, the first time-frequency resource pool corresponds to a plurality of CORESETs.

As an embodiment, the first time-frequency resource pool corresponds to a Search Space (Search Space).

As an embodiment, any one of the K1 candidate resource sets occupies a positive integer number of REs.

As an embodiment, any one of the K1 first type Candidate resource sets is a PDCCH Candidate (Candidate) for the first signaling.

As an embodiment, at least two first-type candidate resource sets exist in the K1 first-type candidate resource sets, and REs occupied by the two first-type candidate resource sets are partially overlapped.

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

As an embodiment, the first information is a higher layer signaling (Higher Layer Signaling).

As an embodiment, any one of the K1 first-type candidate resource sets occupies N CCEs; the N is equal to 1, or the N is equal to 2, or the N is equal to 4, or the N is equal to 8, or the N is equal to 16, or the N is equal to 32.

As an embodiment, the first signaling is a downlink Grant (DL Grant), and the physical layer channel occupied by the first radio signal is PDSCH (Physical Downlink Shared Channel ).

As an embodiment, the first signaling is an uplink Grant (UL Grant), and the physical layer channel occupied by the first radio signal is PUSCH (Physical Uplink Shared Channel ).

As an embodiment, the first signaling is a downlink grant, and the transport channel occupied by the first radio signal is DL-SCH (Downlink Shared Channel ).

As an embodiment, the first signaling is an uplink grant, and the transmission channel occupied by the first radio signal is UL-SCH (Uplink Shared Channel ).

As an embodiment, the first node performs wireless transmission in the first frequency domain interval at the first subcarrier spacing, and the first node performs wireless transmission in the second frequency domain interval at the second subcarrier spacing.

As an embodiment, the subcarriers occupied by the first frequency domain interval and the subcarriers occupied by the second frequency domain interval are orthogonal in the frequency domain.

As an embodiment, there is no subcarrier belonging to both the frequency domain resources occupied by the first frequency domain interval and the frequency domain resources occupied by the second frequency domain interval.

As an embodiment, the first frequency domain interval is one carrier.

As an embodiment, the first frequency domain interval is one CC.

As an embodiment, the first frequency domain interval is a BWP.

As an embodiment, the first frequency domain interval is one Subband (Subband).

As an embodiment, the second frequency domain interval is one carrier.

As an embodiment, the second frequency domain interval is one CC.

As an embodiment, the second frequency domain interval is a BWP.

As an embodiment, the second frequency domain interval is one subband.

As an embodiment, the first signaling comprises a first field, the first field being used to indicate the second frequency domain interval.

As an embodiment, the first time-frequency resource pool includes a positive integer number of REs.

As an embodiment, the first time-frequency resource pool occupies a frequency bandwidth corresponding to a positive integer number of PRBs (Physical Resource Block, physical resource blocks) in the frequency domain, and occupies a positive integer number of OFDM (Orthogonal Frequency Division Multiplexing ) symbols in the time domain.

As an embodiment, the second set of time-frequency resources includes a positive integer number of REs.

As an embodiment, the second set of time-frequency resources occupies a frequency bandwidth corresponding to a positive integer number of PRBs in the frequency domain, and occupies a positive integer number of OFDM symbols in the time domain.

Example 2

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

Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in fig. 2. Fig. 2 is a diagram illustrating an NR 5g, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced, enhanced Long-Term Evolution) system network architecture 200. The NR 5G or LTE network architecture 200 may be referred to as EPS (Evolved Packet System ) 200.EPS 200 may include one or more UEs (User Equipment) 201, ng-RAN (next generation radio access Network) 202, epc (Evolved Packet Core )/5G-CN (5G Core Network) 210, hss (Home Subscriber Server ) 220, and internet service 230. The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, 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 bs (gnbs) 203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gNB203 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), TRP (transmit-receive point), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the EPC/5G-CN210. Examples of UE201 include a cellular telephone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, an drone, an aircraft, a narrowband physical network device, a machine-type communication device, a land vehicle, an automobile, a wearable device, or any other similar functional device. Those of skill in the art may also refer to the 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 is connected to the EPC/5G-CN210 through an S1/NG interface. EPC/5G-CN210 includes MME/AMF/UPF211, other MME/AMF/UPF214, S-GW (Service Gateway) 212, and P-GW (Packet Date Network Gateway, packet data network Gateway) 213. The MME/AMF/UPF211 is a control node that handles signaling between the UE201 and the EPC/5G-CN210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet Protocal, internet protocol) packets are transported through the S-GW212, which S-GW212 itself is connected to P-GW213. The P-GW213 provides UE IP address assignment as well as other functions. The P-GW213 is connected to the internet service 230. The internet service 230 includes operator-corresponding internet protocol services, which may include, in particular, the internet, intranets, IMS (IP Multimedia Subsystem ) and PS streaming services (PSs).

As an embodiment, the UE201 corresponds to the first node in the present application, and the gNB corresponds to the second node in the present application.

As an embodiment, the gNB203 supports data transmission over unlicensed spectrum.

As an embodiment, the UE201 supports data transmission over unlicensed spectrum.

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

As an embodiment, the UE201 supports cross-carrier scheduling.

As an embodiment, the gNB203 supports different subcarrier spacing for the scheduling signaling and the scheduled signal, respectively.

As an embodiment, the UE201 supports different subcarrier spacing for the scheduling signaling and the scheduled signal, respectively.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture according to one user plane and control plane of the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane and a control plane, fig. 3 shows the radio protocol architecture for a first node and a second node with 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 PHY301. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the first node and the second node through PHY301. In the user plane, the L2 layer 305 includes a MAC (Medium Access Control ) sublayer 302, an RLC (Radio Link Control, radio link layer control protocol) sublayer 303, and a PDCP (Packet Data Convergence Protocol ) sublayer 304, which are terminated at a second node on the network side. Although not shown, the first node may have several upper layers above the L2 layer 305, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., remote UE, server, etc.). The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides header compression for upper layer data packets to reduce radio transmission overhead, security by ciphering the data packets, and handover support for UEs between second nodes. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ (Hybrid Automatic Repeat reQuest ). 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 among the first nodes. The MAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the first node and the second node is substantially the same for the physical layer 301 and the L2 layer 305, but there is no header compression function for the control plane. The control plane also includes an RRC (Radio Resource Control ) sublayer 306 in layer 3 (L3 layer). The RRC sublayer 306 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second node and the first node.

As an embodiment, the radio protocol architecture in fig. 3 is applicable to the first node in the present application.

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

As an embodiment, the first signaling in the present application is generated in the PHY301.

As an embodiment, the first wireless signal in the present application is generated in the PHY301.

As an embodiment, the first wireless signal is generated in the MAC sublayer 302.

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

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

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 communication 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 multi-antenna receive processor 472, a multi-antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.

In the transmission from the second communication device 410 to the first communication device 450, upper layer data packets from the core network are provided to a controller/processor 475 at the second communication device 410. The controller/processor 475 implements the functionality of the L2 layer. In the transmission from the second communication device 410 to the first communication device 450, a controller/processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication 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., physical layer). Transmit processor 416 performs coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 410, as well as mapping of signal clusters 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 digitally space-precodes the coded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, to generate one or more spatial streams. A transmit processor 416 then maps each spatial stream to a subcarrier, 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 a physical channel carrying the time domain multicarrier symbol stream. 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 multiple antenna transmit processor 471 to a radio frequency stream and then provides it to a different antenna 420.

In a transmission from the second communication device 410 to the first communication device 450, each receiver 454 receives a signal at the first communication device 450 through its respective antenna 452. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream that is provided to a receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various signal processing functions for 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. The receive processor 456 converts the baseband multicarrier symbol stream after receiving the 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 signal and the reference signal are demultiplexed by the receive processor 456, wherein the reference signal is to be used for channel estimation, and the data signal is subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial stream destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in 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 that were transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller/processor 459. The controller/processor 459 implements the functions 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 the transmission from the second communication device 410 to the second communication device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the core network. The upper layer packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

In the transmission from the first communication device 450 to the second communication device 410, a data source 467 is used at the first communication 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 transmit functions at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocations, implementing L2 layer functions for the user and control planes. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming, with the multi-antenna transmit processor 457 performing digital multi-antenna spatial precoding, after which the transmit processor 468 modulates the resulting spatial stream into a multi-carrier/single-carrier symbol stream, which is analog precoded/beamformed in the multi-antenna transmit processor 457 before being provided to the different antennas 452 via the transmitter 454. 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 it to an antenna 452.

In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the receiving function 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 radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals to baseband signals, and provides the baseband signals to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 collectively implement the functions of the L1 layer. The controller/processor 475 implements L2 layer functions. The controller/processor 475 may be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, a controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the UE 450. Upper layer packets from the controller/processor 475 may be provided to the 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 are configured to, with the at least one processor, cause the apparatus of the first communication device 450 to at least: receiving first information, detecting first signaling in a first time-frequency resource pool in a first frequency domain interval, and operating first wireless signals in a second time-frequency resource set in a second frequency domain interval; the first information is used to determine K0, the K0 being a positive integer greater than 1; the first signaling is used to determine the second set of time-frequency resources; the first signaling is physical layer signaling; the first time-frequency resource pool comprises K1 first-type candidate resource sets, and the first signaling occupies one of the K1 first-type candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt a first subcarrier interval, and the subcarriers occupied by the first wireless signal in the frequency domain adopt a second subcarrier interval; the relative relationship of the K0 and the K1 is related to the second subcarrier spacing; the K1 is a positive integer greater than 1; the operation is a reception or the operation is a transmission.

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, produce acts comprising: receiving first information, detecting first signaling in a first time-frequency resource pool in a first frequency domain interval, and operating first wireless signals in a second time-frequency resource set in a second frequency domain interval; the first information is used to determine K0, the K0 being a positive integer greater than 1; the first signaling is used to determine the second set of time-frequency resources; the first signaling is physical layer signaling; the first time-frequency resource pool comprises K1 first-type candidate resource sets, and the first signaling occupies one of the K1 first-type candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt a first subcarrier interval, and the subcarriers occupied by the first wireless signal in the frequency domain adopt a second subcarrier interval; the relative relationship of the K0 and the K1 is related to the second subcarrier spacing; the K1 is a positive integer greater than 1; the operation is a reception or the operation is a transmission.

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: transmitting first information, transmitting first signaling in a first time-frequency resource pool in a first frequency domain interval, and performing first wireless signals in a second time-frequency resource set in a second frequency domain interval; the first information is used to determine K0, the K0 being a positive integer greater than 1; the first signaling is used to determine the second set of time-frequency resources; the first signaling is physical layer signaling; the first time-frequency resource pool comprises K1 first-type candidate resource sets, and the first signaling occupies one of the K1 first-type candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt a first subcarrier interval, and the subcarriers occupied by the first wireless signal in the frequency domain adopt a second subcarrier interval; the relative relationship of the K0 and the K1 is related to the second subcarrier spacing; the K1 is a positive integer greater than 1; the execution is either transmission or reception.

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, produce acts comprising: transmitting first information, transmitting first signaling in a first time-frequency resource pool in a first frequency domain interval, and performing first wireless signals in a second time-frequency resource set in a second frequency domain interval; the first information is used to determine K0, the K0 being a positive integer greater than 1; the first signaling is used to determine the second set of time-frequency resources; the first signaling is physical layer signaling; the first time-frequency resource pool comprises K1 first-type candidate resource sets, and the first signaling occupies one of the K1 first-type candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt a first subcarrier interval, and the subcarriers occupied by the first wireless signal in the frequency domain adopt a second subcarrier interval; the relative relationship of the K0 and the K1 is related to the second subcarrier spacing; the K1 is a positive integer greater than 1; the execution is either transmission or reception.

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.

As an embodiment, the first communication device 450 is a UE.

As an embodiment, the second communication device 410 is a base station.

As an embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least one of the controller/processor 459 being adapted to receive first information; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least one of the controller/processor 475 are used to transmit first information.

As an embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least one of the controller/processor 459 being adapted to receive second information; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least one of the controller/processor 475 is used to transmit second information.

As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller/processor 459 is configured to detect first signaling in a first pool of time-frequency resources in a first frequency domain interval; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least one of the controller/processor 475 is used to transmit first signaling in a first pool of time-frequency resources in a first frequency domain interval.

As an embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least one of the controller/processor 459 being configured to receive the first wireless signal in a second set of time-frequency resources in a second frequency domain interval; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least one of the controller/processor 475 is used to transmit the first wireless signal in a second set of time-frequency resources in a second frequency domain interval.

As one embodiment, the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, at least one of the controller/processor 459 is used to transmit a first wireless signal in a second set of time-frequency resources in a second frequency domain interval; the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, at least one of the controller/processors 475 is configured to receive the first wireless signal in a second set of time-frequency resources in a second frequency domain interval.

As an embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least one of the controller/processor 459 is configured to perform channel sensing over a second frequency domain interval to determine if a channel is idle.

As an example, the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, at least one of the controller/processor 475 is configured to perform channel sensing over a second frequency domain interval to determine whether a channel is idle.

Example 5

Embodiment 5 illustrates a flow chart of the first information, as shown in fig. 5. In fig. 5, wireless communication is performed between a first node U1 and a second node N2; the step identified as F0 in the figure is optional.

For the followingFirst node U1The first information is received in step S10, the second information is received in step S11, the first signaling is detected in a first time-frequency resource pool in a first frequency domain interval in step S12, and the first radio signal is received in a second set of time-frequency resources in a second frequency domain interval in step S13.

For the followingSecond node N2The first information is transmitted in step S20, the second information is transmitted in step S21, channel sensing is performed on the second frequency domain section in step S22 to determine whether the channel is idle, the first signaling is transmitted in the first time-frequency resource pool in the first frequency domain section in step S23, and the first wireless signal is transmitted in the second time-frequency resource set in the second frequency domain section in step S24.

In embodiment 5, the first information is used to determine K0, the K0 being a positive integer greater than 1; the first signaling is used to determine the second set of time-frequency resources; the first signaling is physical layer signaling; the first time-frequency resource pool comprises K1 first-type candidate resource sets, and the first signaling occupies one of the K1 first-type candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt a first subcarrier interval, and the subcarriers occupied by the first wireless signal in the frequency domain adopt a second subcarrier interval; the relative relationship of the K0 and the K1 is related to the second subcarrier spacing; the K1 is a positive integer greater than 1; the second information is used to determine the first time-frequency resource pool.

As one embodiment, the first time-frequency resource pool includes L1 second class candidate resource sets; any one of the K1 first-type candidate resource sets includes a positive integer of the L1 second-type candidate resource sets, where L1 is related to the second subcarrier spacing; the time-frequency resources occupied by any two second type candidate resource sets in the L1 second type candidate resource sets are orthogonal; the L1 is a positive integer greater than 1.

As a sub-embodiment of this embodiment, the first node U1 demodulates the first signaling by performing no more than the L1 channel estimation in the first time-frequency resource pool.

As a sub-embodiment of this embodiment, the L1 second class candidate resource sets are L1 orthogonal CCEs comprised by the first time-frequency resource pool, respectively.

As a sub-embodiment of this embodiment, any two second-class candidate resource sets in the L1 second-class candidate resource sets occupy the same number of REs.

As a sub-embodiment of this embodiment, the meaning of the sentence that the L1 is related to the second subcarrier spacing includes: the L1 is one candidate integer of Q candidate integers, the Q candidate integers are respectively in one-to-one correspondence with Q subcarrier intervals, and the second subcarrier interval is used for determining the L1 from the Q candidate integers; the Q is a positive integer greater than 1.

As a sub-embodiment of this embodiment, the K1 first-class candidate resource sets at least include a given first-class candidate resource set and a target first-class candidate resource set, where the given first-class candidate resource set occupies L2 second-class candidate resource sets, the target first-class candidate resource set occupies L3 second-class candidate resource sets, L3 is greater than L2, and L3 is a positive integer multiple of L2, and any one of the L2 second-class candidate resource sets is one of the L3 second-class candidate resource sets.

As an embodiment, the first node U1 detects the first signaling in the first time-frequency resource pool by performing no more than the K1 blind detections, the K1 blind detections being performed on the K1 candidate resource sets, respectively.

As a sub-embodiment of this embodiment, the meaning of the first node U1 detecting the first signaling in the first time-frequency resource pool by performing blind detection no more than K1 times includes: the first node U1 does not know which one of the K1 candidate resource sets the first signaling occupies before detecting the first signaling.

As a sub-embodiment of this embodiment, the meaning of the first node U1 detecting the first signaling in the first time-frequency resource pool by performing blind detection no more than K1 times includes: the first node U1 determines that the first signaling is received correctly by a CRC check.

As an embodiment, the K1 candidate resource sets of the first type are directed to a first format, and the first signaling adopts the first format.

As a sub-embodiment of this embodiment, the first Format is a DCI Format.

As a sub-embodiment of this embodiment, the first format is one of format 1_0 and format 1_1.

As a sub-embodiment of this embodiment, the first format is one of format 0_0 and format 0_1.

As a sub-embodiment of this embodiment, the first format is one of format 2_0, format 2_1, format 2_2 and format 2_3.

As an embodiment, the first information includes first sub information, the first sub information is used to determine a first coefficient, the first coefficient corresponds to the second subcarrier spacing, and the K1 is equal to a product of the K0 and the first coefficient.

As a sub-embodiment of this embodiment, the first coefficients only take effect when the second frequency domain interval belongs to an unlicensed frequency domain resource.

As a sub-embodiment of this embodiment, the first coefficient only takes effect when the first subcarrier spacing is greater than the second subcarrier spacing.

As a sub-embodiment of this embodiment, the first sub-information includes a first coefficient set including Q candidate coefficients, the Q candidate coefficients respectively corresponding to Q subcarrier intervals one by one, the second subcarrier interval is one subcarrier interval of the Q subcarrier intervals, and the candidate coefficient corresponding to the second subcarrier interval is the first coefficient.

As a sub-embodiment of this embodiment, the second subcarrier spacing is greater than the first subcarrier spacing, and the first coefficient is equal to 1.

As a sub-embodiment of this embodiment, the second subcarrier spacing is smaller than the first subcarrier spacing, and the first coefficient is a fraction greater than 0 and less than 1.

As an embodiment, the first frequency domain interval belongs to licensed spectrum resources and the second frequency domain interval belongs to unlicensed spectrum resources.

As an embodiment, the first information and the second information belong to the same RRC IE (Information Elements, information element).

As an embodiment, the first information and the second information respectively belong to different RRC IEs.

As an embodiment, the first signaling is used by the first node U1 to determine that channel detection is not required for the second frequency domain interval before transmitting the first wireless signal to determine that the second frequency domain interval is idle.

As an embodiment, the first signaling is used by the first node U1 to determine that the second frequency domain interval is idle before the first node U1 transmits the first wireless signal.

As an embodiment, the first signaling is used to indicate frequency domain resources occupied by the second set of time-frequency resources from the second frequency domain interval.

Example 6

Embodiment 6 illustrates another flow chart of the first information, as shown in fig. 6. In fig. 6, wireless communication is performed between a first node U3 and a second node N4; the step identified as F1 in the figure is optional; both the embodiment and the sub-embodiment of embodiment 5 are applicable to embodiment 6 without conflict.

For the followingFirst node U3The first information is received in step S30, the second information is received in step S31, the first signaling is detected in a first time-frequency resource pool in a first frequency domain section in step S32, channel sensing is performed on a second frequency domain section in step S33 to determine whether a channel is idle, and the first wireless signal is transmitted in a second set of time-frequency resources in the second frequency domain section in step S34.

For the followingSecond node N4The first information is transmitted in step S40, the second information is transmitted in step S41, the first signaling is transmitted in a first time-frequency resource pool in a first frequency domain interval in step S42, and the first wireless signal is received in a second time-frequency resource set in a second frequency domain interval in step S43.

In embodiment 6, the first information is used to determine K0, the K0 being a positive integer greater than 1; the first signaling is used to determine the second set of time-frequency resources; the first signaling is physical layer signaling; the first time-frequency resource pool comprises K1 first-type candidate resource sets, and the first signaling occupies one of the K1 first-type candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt a first subcarrier interval, and the subcarriers occupied by the first wireless signal in the frequency domain adopt a second subcarrier interval; the relative relationship of the K0 and the K1 is related to the second subcarrier spacing; the K1 is a positive integer greater than 1; the second information is used to determine the first time-frequency resource pool.

As an embodiment, the first node U3 detects the first signaling in the first time-frequency resource pool by performing no more than the K1 blind detections, the K1 blind detections being performed on the K1 candidate resource sets, respectively.

As an embodiment, the first signaling is used by the first node U3 to determine that channel detection is not required for the second frequency domain interval before transmitting the first wireless signal to determine that the second frequency domain interval is idle.

As an embodiment, the first signaling is used by the first node U3 to determine that the second frequency domain interval is idle before the first node U3 transmits the first wireless signal.

Example 7

Embodiment 7 illustrates a schematic diagram of K1 candidate resource sets of the first type. The rectangular boxes shown in fig. 7 each represent one set of candidate resources of the first type; the different rectangular box sizes in the figure represent the number of REs occupied by different sets of candidate resources of the first type.

As an embodiment, any one of the K1 first type Candidate resource sets is a PDCCH Candidate (Candidate).

As an embodiment, any one of the K1 first-type candidate resource sets occupies a positive integer number of CCEs.

As an embodiment, any one of the K1 candidate resource sets of the first type is one REG (Resource Element Group ).

As an embodiment, the K1 first-type candidate resource sets include K2 first-type candidate resource sets occupying the same number of REs, and REs occupied by any two first-type candidate resource sets in the K2 first-type candidate resource sets occupying the same number of REs are orthogonal; the K2 is a positive integer greater than 1 and not greater than K1.

As an embodiment, the K1 first-class candidate resource sets at least include a given first-class candidate resource set and a target first-class candidate resource set, the number of REs occupied by the given first-class candidate resource set is smaller than the number of REs occupied by the target first-class candidate resource set, and the REs occupied by the given first-class candidate resource set all belong to the REs occupied by the target first-class candidate resource set.

Example 8

Embodiment 8 illustrates a schematic diagram of L1 candidate resource sets of the second type, as shown in fig. 8. In fig. 8, the solid small square boxes shown in the figure correspond to one set of candidate resources of the second type. The dashed boxes shown in the figure correspond to sets of candidate resources of the first type consisting of different numbers of sets of candidate resources of the second type. The first time-frequency resource pool in the application comprises L1 second type candidate resource sets shown in the figure.

As an embodiment, REs occupied by any two second type candidate resource sets in the L1 second type candidate resource sets are orthogonal.

As an embodiment, any one of the L1 second type candidate resource sets is a CCE.

As an embodiment, any one of the L1 second type candidate resource sets is one REG.

As an embodiment, REs occupied by any one of the L1 second type candidate resource sets are continuous in the frequency domain.

As an embodiment, REs occupied by at least one second type candidate resource set in the L1 second type candidate resource sets are discrete in the frequency domain.

Example 9

Embodiment 9 illustrates a flowchart for performing channel sensing to determine whether a channel is idle, as shown in fig. 9. The steps shown in fig. 9 are channel sensing performed for the target frequency domain resources to determine whether channels on the target frequency domain resources are free.

The given node in the present application generates a first integer in step S91; initializing a first counter to Q2 in step S92, the Q2 distribution probability being uniform among all integers between 0 and the first integer; in step S93, performing channel sensing in an extended time sub-pool, determining whether the extended time sub-pool is free, and if not, continuing to perform channel sensing in an extended time sub-pool until a free extended time sub-pool is found; if yes, in step S94, it is determined whether the first counter is 0; if the determination in step S94 is yes, it is determined in step S96 that the channel is idle; if the determination in step S94 is negative, the first counter is updated to be decremented by 1 (i.e., the value of the updated first counter=the value of the first counter before update-1) in step S95, and energy detection is performed in one time sub-pool to determine whether the one time sub-pool is free; if the judgment result in the step S95 is yes, jumping to the step S94; if the result of the determination in step S95 is no, the process jumps to step S93, i.e. the energy detection is performed until one extended time sub-pool is considered to be free.

As an embodiment, the target frequency domain resource is a frequency domain resource corresponding to the second frequency domain interval in the present application.

As an embodiment, in the channel sensing performed in a first time sub-pool, the first time sub-pool is considered to be idle, the first time sub-pool being the earliest one of the Q1 time sub-pools; the Q2 is greater than 0; the Q2 time sub-pools are Q1-1 time sub-pools of the Q1 time sub-pools other than the first time sub-pool.

As one embodiment, the given node performs Q1 times of energy detection in the Q1 time sub-pools, respectively, the Q1 times of energy detection being used to determine whether the target frequency domain resource is Idle (Idle).

As an embodiment, the given node performs Q1 times of energy detection in the Q1 time sub-pools, respectively, the Q1 times of energy detection being used to determine whether the target frequency domain resource can be used by the first node for transmitting wireless signals.

As an embodiment, the given node performs Q1 times of energy detection in the Q1 time sub-pools, respectively, the Q1 times of energy detection being energy detection in LBT, see 3gpp ts36.889 for a specific definition and implementation of LBT.

As an embodiment, the given node performs Q1 times of energy detection in the Q1 time sub-pools, respectively, the Q1 times of energy detection being energy detection in CCA (Clear Channel Assessment ), the specific definition and implementation of CCA being seen in 3gpp tr36.889.

As an embodiment, the given node performs Q1 times of energy detection in the Q1 time sub-pools, and any one of the Q1 times of energy detection is implemented by an energy detection manner in WiFi.

As an embodiment, the given node performs Q1 times of energy detection in the Q1 time sub-pools, and any one of the Q1 times of energy detection is implemented by an energy detection manner in LTE LAA or NR LAA.

As an embodiment, the given node is the first node in the present application, or the given node is the second node in the present application.

As an embodiment, the time domain resources occupied by any one of the Q1 time sub-pools are contiguous.

As an embodiment, the Q1 time sub-pools are orthogonal (non-overlapping) to each other in the time domain.

As an embodiment, the duration of any of the Q1 time sub-pools is 16 microseconds, or the duration of any of the Q1 time sub-pools is 9 microseconds.

As an embodiment, any of the Q1 time sub-pools is Tsl, which is a slot period, for a specific definition of Tsl, see section 4 in 3gpp ts 37.213.

As an embodiment, the channel perception comprises energy detection.

As an embodiment, the channel perception comprises coherent detection of a signature sequence.

As an embodiment, the channel perception comprises incoherent detection of a signature sequence.

As an embodiment, the Q2 is greater than 1, and the duration of the Q2 time sub-pools in the present application are all the same.

As one embodiment, the duration of any one of the Q2 time sub-pools is related to a subcarrier spacing over the target frequency domain resource.

Example 10

Embodiment 10 illustrates a flow chart for energy detection in a target time sub-pool, as shown in fig. 10.

The given node performs energy detection in one time slice in the target time sub-pool in step S1001; determining in step S1002 whether the detected energy is less than a certain threshold; if yes, it is determined in step S1003 that the one time slice is idle; if not, judging in step S1004 that the one time slice is busy; the given node is a first node or the given node is a second node.

As one embodiment, the specific threshold is in dBm (millidecibel).

As one example, the specific threshold is in mW (milliwatt).

As an embodiment, the specific threshold value is related to the second subcarrier spacing.

As an embodiment, the specific threshold is configurable.

As an embodiment, the specific threshold is a constant.

As one embodiment, the target time sub-pool comprises a plurality of consecutive time slices; the steps of fig. 10 are performed in each of the plurality of consecutive time slices; the target time sub-pool is considered to be idle if all of the plurality of consecutive time slices are considered to be idle, otherwise the target time sub-pool is considered to be busy.

As a sub-embodiment of the above embodiment, the target time sub-pool is a first time sub-pool of the Q1 time sub-pools in the present application.

As a sub-embodiment of the above embodiment, the target time sub-pool is any one of the Q1 time sub-pools in the present application.

As a sub-embodiment of the above embodiment, the target time sub-pool is the one extended time sub-pool in the present application.

As a sub-embodiment of the above embodiment, the target time sub-pool is the first time sub-pool in the present application.

As a sub-embodiment of the above embodiment, the target time sub-pool has a duration of 16 microseconds.

As a sub-embodiment of the above embodiment, the target time sub-pool has a duration of 9 microseconds.

As a sub-embodiment of the above embodiment, the time slices have a duration of 4 microseconds.

As an embodiment, the specific threshold is equal to or less than-72 dBm.

Example 11

Embodiment 11 illustrates a flowchart for determining whether to transmit a first wireless signal based on whether a channel is idle, as shown in fig. 11.

The given node determines in step S1101 whether the channel is idle; if so, transmitting the first wireless signal in a second set of time-frequency resources in a second frequency domain interval in step S1102; if not, discarding the wireless transmission in the second frequency domain interval in step S1103; the given node is the first node in the present application, or the given node is the second node in the present application.

As an embodiment, the step S1103 includes: and maintaining zero transmission power in the second frequency domain interval.

As an embodiment, the step S1103 includes: and caching the information bit corresponding to the first wireless signal to wait for the next sending opportunity.

As an embodiment, the step S1103 includes: and continuing to perform channel sensing operation to determine time-frequency resources which can be used for transmitting information bits corresponding to the first wireless signal.

Example 12

Example 12 illustrates a schematic diagram of a time sub-pool, as shown in fig. 12. In fig. 12, a box marked with a thick line represents a time sub-pool, and a box filled with a horizontal line represents a time slice. The one time sub-pool includes a plurality of time slices.

As an embodiment, the duration of the one time sub-pool is not divisible by the duration of the time slice, i.e. the one time sub-pool is not exactly divided into positive integer number of time slices.

As an embodiment, the one time sub-pool is any one of the Q1 time sub-pools in the present application.

As an embodiment, the duration of the one time sub-pool is 16 microseconds.

As an embodiment, the duration of the one time sub-pool is 9 microseconds.

As an embodiment, the duration of the one time slice is 4 microseconds.

Example 13

Embodiment 13 illustrates a schematic diagram of the first information, as shown in fig. 13. In fig. 13, the first information includes positive integers n1_0, n2_0, n4_0, n8_0 and n16_0, which respectively correspond to the number of PDCCH candidates included in the first time-frequency resource pool at the current subcarrier spacing under different aggregation levels; the n1_0, n2_0, n4_0, n8_0 and n16_0 are positive integers; the sum of said n1_0, n2_0, n4_0, n8_0 and n16_0 is equal to said K0 in the present application; the first information also comprises 4 candidate coefficients, which respectively correspond to P1, P2, P3 and P4 in the graph; the corresponding subcarrier spacings are 15kHz,30kHz,60kHz and 120kHz, respectively; the P1, P2, P3 and P4 are real numbers greater than 0.

As an embodiment, the second subcarrier spacing is equal to 15kHz, and the number of blind detections in the first time-frequency resource pool in one time slot for the first signaling is not greater than the product of K0 and P1.

As a sub-embodiment of this embodiment, the aggregation level is 1,2,4,8, and 16, the number of blind detections is no greater than the product of n1_0 and P1, n2_0 and P1, n4_0 and P1, n8_0 and P1, and n16_0 and P1, respectively.

As an embodiment, the second subcarrier spacing is equal to 30kHz, and the number of blind detections in the first time-frequency resource pool in one time slot for the first signaling is not greater than the product of K0 and P2.

As a sub-embodiment of this embodiment, the aggregation level is 1,2,4,8, and 16, the number of blind detections is no greater than the product of n1_0 and P2, the product of n2_0 and P2, the product of n4_0 and P2, the product of n8_0 and P2, and the product of n16_0 and P2, respectively.

As an embodiment, the second subcarrier spacing is equal to 60kHz, and the number of blind detections in the first time-frequency resource pool in one time slot for the first signaling is not greater than the product of K0 and P3.

As a sub-embodiment of this embodiment, the aggregation level is 1,2,4,8, and 16, the number of blind detections is no greater than the product of n1_0 and P3, the product of n2_0 and P3, the product of n4_0 and P3, the product of n8_0 and P3, and the product of n16_0 and P3, respectively.

As an embodiment, the second subcarrier spacing is equal to 120kHz, and the number of blind detections in the first time-frequency resource pool in one time slot for the first signaling is not greater than the product of K0 and P4.

As a sub-embodiment of this embodiment, the aggregation level is 1,2,4,8, and 16, the number of blind detections is no greater than the product of n1_0 and P4, the product of n2_0 and P4, the product of n4_0 and P4, the product of n8_0 and P4, and the product of n16_0 and P4, respectively.

As an embodiment, the first information belongs to RRC signaling SearchSpace IE.

Example 14

Embodiment 14 illustrates another schematic diagram of the first information, as shown in fig. 14. In fig. 14, the first information includes positive integers m1_0, m2_0, m4_0, m8_0 and m16_0, which respectively correspond to the number of PDCCH candidates included in the first time-frequency resource pool at the current subcarrier spacing under different aggregation levels in a given DCI format; the m1_0, m2_0, m4_0, m8_0 and m16_0 are positive integers; the sum of said m1_0, m2_0, m4_0, m8_0 and m16_0 is equal to said K0 in the present application; the first information also comprises 4 candidate coefficients, which respectively correspond to R1, R2, R3 and R4 in the graph; the corresponding subcarrier spacings are 15kHz,30kHz,60kHz and 120kHz, respectively; the R1, R2, R3 and R4 are real numbers greater than 0; DCI-format-x shown in the figure corresponds to the given DCI format.

As one embodiment, the given DCI format is one of format 1_0 and format 1_1.

As one embodiment, the given DCI format is one of format 0_0 and format 0_1.

As one embodiment, the given DCI format is one of format 2_0, format 2_1, format 2_2 and format 2_3.

As an embodiment, the second subcarrier spacing is equal to 15kHz, and the number of blind detections in the first time-frequency resource pool in one slot for the first signaling under a given DCI format is not greater than the product of K0 and R1.

As a sub-embodiment of this embodiment, the aggregation level is 1,2,4,8, and 16, the number of blind detections is no greater than the product of m1_0 and R1, the product of m2_0 and R1, the product of m4_0 and R1, the product of m8_0 and R1, and the product of m16_0 and R1, respectively.

As an embodiment, the second subcarrier spacing is equal to 30kHz, and the number of blind detections in the first time-frequency resource pool in one slot for the first signaling under a given DCI format is not greater than the product of K0 and R2.

As a sub-embodiment of this embodiment, the aggregation level is 1,2,4,8, and 16, the number of blind detections is no greater than the product of m1_0 and R2, the product of m2_0 and R2, the product of m4_0 and R2, the product of m8_0 and R2, and the product of m16_0 and R2, respectively.

As an embodiment, the second subcarrier spacing is equal to 60kHz, and the number of blind detections in the first time-frequency resource pool in one slot for the first signaling under a given DCI format is not greater than the product of K0 and R3.

As a sub-embodiment of this embodiment, the aggregation level is 1,2,4,8, and 16, the number of blind detections is no greater than the product of m1_0 and R3, the product of m2_0 and R3, the product of m4_0 and R3, the product of m8_0 and R3, and the product of m16_0 and R3, respectively.

As an embodiment, the second subcarrier spacing is equal to 120kHz, and the number of blind detections in the first time-frequency resource pool in one slot for the first signaling under a given DCI format is not greater than the product of K0 and R4.

As a sub-embodiment of this embodiment, the aggregation level is 1,2,4,8, and 16, the number of blind detections is no greater than the product of m1_0 and R4, the product of m2_0 and R4, the product of m4_0 and R4, the product of m8_0 and R4, and the product of m16_0 and R4, respectively.

Example 15

Embodiment 15 illustrates a schematic diagram of a first time-frequency resource pool, as shown in fig. 15. In fig. 15, the first time-frequency resource pool occupies a positive integer number of PRBs along with the corresponding frequency domain bandwidth in the frequency domain, and occupies a positive integer number of multicarrier symbols in the time domain.

As an embodiment, the first time-frequency resource pool is a CORESET.

As an embodiment, the first time-frequency resource pool is a plurality of CORESETs.

As an embodiment, the first time-frequency resource pool includes K3 first-type candidate resource sets, where K3 is a positive integer greater than K1, and K1 first-type candidate resource sets in the K3 first-type candidate resource sets are used to schedule transmission of wireless signals in the second frequency-domain section in one time slot.

As a sub-embodiment of this embodiment, a first type candidate resource set out of the K3 first type candidate resource sets and out of the K1 first type candidate resource sets is used to schedule transmission of wireless signals outside the second frequency domain interval in one slot.

Example 16

Embodiment 16 illustrates a schematic diagram of a first frequency domain interval and a second frequency domain interval, as shown in fig. 16. In fig. 16, the first signaling in the present application is transmitted in the first frequency domain interval, and the first wireless signal in the present application is transmitted in the second frequency domain interval.

As an embodiment, the first frequency domain interval and the second frequency domain interval each have PDCCH candidates for scheduling signaling of the first wireless signal.

As one embodiment, the first node performs blind detection in both the first frequency domain interval and the second frequency domain interval to determine scheduling signaling for the first wireless signal.

As an embodiment, the second frequency domain interval comprises a second time-frequency resource pool in which the first node blindly detects and does not detect scheduling signaling for the first wireless signal.

As an embodiment, the first time-frequency resource pool includes PDCCH candidates corresponding to wireless signals transmitted in the first frequency domain interval.

Example 17

Embodiment 17 illustrates a block diagram of the structure in a first node, as shown in fig. 17. In fig. 17, the first node 1700 includes a first receiver 1701, a second receiver 1702, and a first transceiver 1703.

A first receiver 1701 that receives first information;

the second receiver 1702 detecting a first signaling in a first time-frequency resource pool in a first frequency domain interval;

a first transceiver 1703 operating the first wireless signal in a second set of time-frequency resources in a second frequency domain interval;

in embodiment 17, the first information is used to determine K0, the K0 being a positive integer greater than 1; the first signaling is used to determine the second set of time-frequency resources; the first signaling is physical layer signaling; the first time-frequency resource pool comprises K1 first-type candidate resource sets, and the first signaling occupies one of the K1 first-type candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt a first subcarrier interval, and the subcarriers occupied by the first wireless signal in the frequency domain adopt a second subcarrier interval; the relative relationship of the K0 and the K1 is related to the second subcarrier spacing; the K1 is a positive integer greater than 1; the operation is a reception or the operation is a transmission.

As an embodiment, the first node detects the first signaling in the first time-frequency resource pool by performing no more than the K1 blind detections, the K1 blind detections being performed on the K1 candidate resource sets, respectively.

As an embodiment, the first receiver 1701 receives second information, which is used to determine the first time-frequency resource pool.

For one embodiment, the second receiver 1702 performs channel sensing over a second frequency domain interval to determine whether a channel is idle.

As one embodiment, the first signaling is used by the first node to determine that channel detection is not required for the second frequency domain interval to determine that the second frequency domain interval is idle prior to transmitting the first wireless signal.

As an embodiment, the first signaling is used by the first node to determine that the second frequency domain interval is idle before the first node transmits the first wireless signal.

As an embodiment, the first coefficient only takes effect when the second frequency domain interval belongs to an unlicensed frequency domain resource.

As an embodiment, the first coefficient only takes effect when the first subcarrier spacing is greater than the second subcarrier spacing.

As an embodiment, the first receiver 1701 includes 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 in embodiment 4.

As an embodiment, the second receiver 1702 includes 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.

As one example, the first transceiver 1703 includes at least the first 6 of the antenna 452, the transmitter/receiver 454, the multi-antenna transmit processor 457, the multi-antenna receive processor 458, the transmit processor 468, the receive processor 456, and the controller/processor 459 of example 4.

Example 18

Embodiment 18 illustrates a block diagram of the structure in a second node, as shown in fig. 18. In fig. 18, the second node 1800 includes a first transmitter 1801, a second transmitter 1802, and a second transceiver 1803.

A first transmitter 1801 that transmits first information;

a second transceiver 1802 transmitting first signaling in a first time-frequency resource pool in a first frequency domain interval;

a third transceiver 1803 executing the first wireless signal in a second set of time-frequency resources in a second frequency domain interval;

in embodiment 18, the first information is used to determine K0, the K0 being a positive integer greater than 1; the first signaling is used to determine the second set of time-frequency resources; the first signaling is physical layer signaling; the first time-frequency resource pool comprises K1 first-type candidate resource sets, and the first signaling occupies one of the K1 first-type candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt a first subcarrier interval, and the subcarriers occupied by the first wireless signal in the frequency domain adopt a second subcarrier interval; the relative relationship of the K0 and the K1 is related to the second subcarrier spacing; the K1 is a positive integer greater than 1; the execution is either transmission or reception.

As an embodiment, the first transmitter 1801 transmits second information, which is used to determine the first time-frequency resource pool.

As one embodiment, the second transceiver 1802 performs channel sensing over a second frequency domain interval to determine whether a channel is idle.

As an embodiment, the first signaling is used to indicate that the first node does not need to perform channel detection for the second frequency domain interval to determine that the second frequency domain interval is idle before transmitting the first wireless signal.

As an embodiment, the first signaling is used to indicate that the second frequency domain interval is idle before the first node in the present application transmits the first wireless signal.

As one example, the first transmitter 1801 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 example 4.

As one example, the second transceiver 1802 includes at least the first 6 of the antenna 420, the transmitter/receiver 418, the multi-antenna transmit processor 471, the multi-antenna receive processor 472, the transmit processor 416, the receive processor 470, and the controller/processor 475 of example 4.

As one example, the third transceiver 1803 includes at least the first 6 of the antenna 420, the transmitter/receiver 418, the multi-antenna transmit processor 471, the multi-antenna receive processor 472, the transmit processor 416, the receive processor 470, and the controller/processor 475 of example 4.

Those of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described methods may be implemented by a program that instructs associated hardware, and the program may be stored on 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 using one or more integrated circuits. Accordingly, each module unit in the above embodiment may be implemented in a hardware form or may be implemented in a software functional module form, and the application is not limited to any specific combination of software and hardware. The first node and the second node in the application include, but are not limited to, mobile phones, tablet computers, notebooks, network cards, low power consumption devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, vehicles, RSUs, aircrafts, airplanes, unmanned aerial vehicles, remote control aircrafts and other wireless communication devices. 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 receiving node TRP, a GNSS, a relay satellite, a satellite base station, an air base station, an RSU, and other wireless communication devices.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application are intended to be included within the scope of the present application.

Claims

1. A first node for wireless communication, comprising:

a first receiver that receives first information;

wherein the first information is used to determine K0, the K0 being a positive integer greater than 1; the first signaling is used to determine the second set of time-frequency resources; the K0 is the number of blind detections in one BWP in one slot for a specific subcarrier spacing; the first signaling is physical layer signaling; the first time-frequency resource pool comprises K1 first-type candidate resource sets, and the first signaling occupies one of the K1 first-type candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt a first subcarrier interval, and the subcarriers occupied by the first wireless signal in the frequency domain adopt a second subcarrier interval; the relative relationship of the K0 and the K1 is related to the second subcarrier spacing; the K1 is a positive integer greater than 1; the operation is a reception or the operation is a transmission; the first node performs blind detection for not more than K1 times for the first signaling in the first time-frequency resource pool; the first subcarrier spacing is equal to 15KHz (kilohertz), or the first subcarrier spacing is equal to 30KHz, or the first subcarrier spacing is equal to 60KHz, or the first subcarrier spacing is equal to 120KHz; the relative relationship of K0 and K1 with respect to the second subcarrier spacing means including at least one of:

-the second subcarrier spacing is used to determine the difference between K0 and K1 or the ratio of K0 and K1;

-the second subcarrier spacing is smaller than the first subcarrier spacing, K1 is smaller than K0;

-the second subcarrier spacing is greater than or equal to the first subcarrier spacing, K1 being equal to K0.

2. The first node of claim 1, wherein the first time-frequency resource pool comprises L1 sets of second class candidate resources; any one of the K1 first-type candidate resource sets includes a positive integer of the L1 second-type candidate resource sets, where L1 is related to the second subcarrier spacing; the time-frequency resources occupied by any two second type candidate resource sets in the L1 second type candidate resource sets are orthogonal; the L1 is a positive integer greater than 1.

3. The first node according to claim 1 or 2, characterized in that the first node detects the first signaling in the first time-frequency resource pool by performing no more than the K1 blind detections, the K1 blind detections being performed on the K1 sets of candidate resources of the first type, respectively.

4. The first node according to claim 1 or 2, wherein the K1 sets of candidate resources of a first type are for a first format, the first signaling employing the first format.

5. The first node according to claim 1 or 2, characterized in that the first information comprises first sub-information, which is used to determine a first coefficient, which corresponds to the second subcarrier spacing, the K1 being equal to the product of the K0 and the first coefficient.

6. The first node according to claim 1 or 2, characterized in that the first receiver receives second information, which is used for determining the first time-frequency resource pool.

7. The first node according to claim 1 or 2, wherein the first frequency domain interval belongs to licensed spectrum resources and the second frequency domain interval belongs to unlicensed spectrum resources.

8. The first node according to claim 1 or 2, wherein the second receiver performs channel sensing over a second frequency domain interval to determine if a channel is free when the first node transmits the first wireless signal in the second set of time-frequency resources in the second frequency domain interval.

9. The first node of claim 1 or 2, wherein the first signaling is used by the first node to determine that channel detection is not required for the second frequency domain interval to determine that the second frequency domain interval is idle prior to transmitting the first wireless signal.

10. The first node of claim 1 or 2, wherein the first signaling is used by the first node to determine that the second frequency domain interval is idle before the first node transmits the first wireless signal.

11. The first node of claim 5, wherein the first coefficient is only valid when the second frequency domain interval belongs to an unlicensed frequency domain resource.

12. The first node of claim 5, wherein the first coefficient is only valid when the first subcarrier spacing is greater than the second subcarrier spacing.

13. The first node according to claim 1 or 2, wherein the first time-frequency resource pool corresponds to one CORESET or a plurality of CORESETs.

14. The first node according to claim 1 or 2, characterized in that any one of the K1 sets of first type candidate resources is a PDCCH candidate for first signaling.

15. The first node according to claim 1 or 2, characterized in that the first information is RRC signaling.

16. The first node according to claim 1 or 2, wherein any one of the K1 sets of candidate resources of a first type occupies N CCEs; the N is equal to 1, or the N is equal to 2, or the N is equal to 4, or the N is equal to 8, or the N is equal to 16.

17. The first node according to claim 1 or 2, characterized in that the first signaling is a downlink grant and the physical layer channel occupied by the first radio signal is PDSCH.

18. The first node according to claim 1 or 2, characterized in that the first signaling is an uplink grant and the physical layer channel occupied by the first radio signal is PUSCH.

19. The first node according to claim 1 or 2, characterized in that the first frequency domain interval is one carrier or the first frequency domain interval is one BWP.

20. The first node according to claim 1 or 2, characterized in that the second frequency domain interval is one carrier or the second frequency domain interval is one BWP.

21. The first node according to claim 1 or 2, characterized in that the first signaling comprises a first domain, the first domain comprised by the first signaling being used for indicating the second frequency domain interval.

22. The first node according to claim 1 or 2, wherein the first time-frequency resource pool occupies a frequency bandwidth corresponding to a positive integer number of PRBs in the frequency domain and occupies a positive integer number of OFDM symbols in the time domain.

23. The first node according to claim 1 or 2, wherein the second set of time-frequency resources occupies a frequency bandwidth corresponding to a positive integer number of PRBs in the frequency domain and occupies a positive integer number of OFDM symbols in the time domain.

24. The first node of claim 2, wherein the first node demodulates the first signaling in the first pool of time-frequency resources by performing no more than the L1 channel estimation.

25. The first node of claim 2, wherein the L1 sets of second class candidate resources are L1 orthogonal CCEs included in the first time-frequency resource pool, respectively.

26. The first node of claim 2, wherein any one of the L1 sets of second-type candidate resources is a CCE.

27. The first node according to claim 2, wherein L1 is one of Q candidate integers, the Q candidate coefficient integers being in one-to-one correspondence with Q subcarrier spacings, respectively, the second subcarrier spacing being used to determine the L1 from the Q candidate integers; the Q is a positive integer greater than 1.

28. The first node according to claim 1 or 2, characterized in that the first node determines that the first signaling is received correctly by means of a CRC check.

29. The first node of claim 4, wherein the first Format is a DCI Format.

30. The first node of claim 4, wherein the first format is one of format 1_0 and format 1_1; or the first format is one of format 0_0 and format 0_1; or the first format is one of format 2_0, format 2_1, format2_2 and format 2_3; the Format 1_0 is DCI Format 1_0, and the Format 1_1 is DCI Format 1_1; the Format 0_0 is DCI Format 0_0, and the Format 0_1 is DCI Format 0_1; the Format 2_0 is DCIFformat 2_0, the Format 2_1 is DCIFformat 2_1, the Format2_2 is DCIFformat 2_2, and the Format 2_3 is DCI Format 2_3.

31. The first node of claim 6, the first information and the second information belong to a same RRC IE, or the first information and the second information respectively belong to different RRC IEs.

32. A second node for wireless communication, comprising:

a first transmitter that transmits first information;

wherein the first information is used to determine K0, the K0 being a positive integer greater than 1; the first signaling is used to determine the second set of time-frequency resources; the K0 is the number of blind detections in one BWP in one slot for a specific subcarrier spacing; the first signaling is physical layer signaling; the first time-frequency resource pool comprises K1 first-type candidate resource sets, and the first signaling occupies one of the K1 first-type candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt a first subcarrier interval, and the subcarriers occupied by the first wireless signal in the frequency domain adopt a second subcarrier interval; the relative relationship of the K0 and the K1 is related to the second subcarrier spacing; the K1 is a positive integer greater than 1; the execution is either transmission or reception; the receiver of the first information includes a first node; the first node performs blind detection for not more than K1 times for the first signaling in the first time-frequency resource pool; the first subcarrier spacing is equal to 15KHz (kilohertz), or the first subcarrier spacing is equal to 30KHz, or the first subcarrier spacing is equal to 60KHz, or the first subcarrier spacing is equal to 120KHz; the relative relationship of K0 and K1 with respect to the second subcarrier spacing means including at least one of:

33. The second node according to claim 32, wherein the first time-frequency resource pool comprises L1 sets of second class candidate resources; any one of the K1 first-type candidate resource sets includes a positive integer of the L1 second-type candidate resource sets, where L1 is related to the second subcarrier spacing; the time-frequency resources occupied by any two second type candidate resource sets in the L1 second type candidate resource sets are orthogonal; the L1 is a positive integer greater than 1.

34. The second node according to claim 32 or 33, wherein the K1 sets of candidate resources of a first type are for a first format, the first signaling being in the first format.

35. The second node according to claim 32 or 33, characterized in that the first information comprises first sub-information, which is used to determine a first coefficient, which corresponds to the second subcarrier spacing, the K1 being equal to the product of the K0 and the first coefficient.

36. The second node according to claim 32 or 33, characterized in that the first transmitter transmits second information, which is used for determining the first time-frequency resource pool.

37. The second node according to claim 32 or 33, wherein the first frequency domain interval belongs to licensed spectrum resources and the second frequency domain interval belongs to unlicensed spectrum resources.

38. The second node according to claim 32 or 33, wherein the second transceiver performs channel sensing over the second frequency domain interval to determine whether a channel is free.

39. The second node of claim 35, wherein the first coefficient is only valid when the second frequency domain interval belongs to an unlicensed frequency domain resource.

40. The second node of claim 35, wherein the first coefficient is only valid when the first subcarrier spacing is greater than the second subcarrier spacing.

41. The second node according to claim 32 or 33, wherein the first time-frequency resource pool corresponds to one CORESET or a plurality of CORESETs.

42. The second node according to claim 32 or 33, characterized in that any one of the K1 sets of first type candidate resources is a PDCCH candidate for first signaling.

43. The second node according to claim 32 or 33, characterized in that the first information is RRC signaling.

44. The second node according to claim 32 or 33, wherein any one of the K1 sets of candidate resources of a first type occupies N CCEs; the N is equal to 1, or the N is equal to 2, or the N is equal to 4, or the N is equal to 8, or the N is equal to 16.

45. The second node according to claim 32 or 33, wherein the first signaling is a downlink grant and the physical layer channel occupied by the first radio signal is PDSCH.

46. The second node according to claim 32 or 33, wherein the first signaling is an uplink grant and the physical layer channel occupied by the first radio signal is PUSCH.

47. The second node according to claim 32 or 33, wherein the first frequency domain interval is one carrier or the first frequency domain interval is one BWP.

48. The second node according to claim 32 or 33, characterized in that the second frequency domain interval is one carrier or the second frequency domain interval is one BWP.

49. The second node according to claim 32 or 33, wherein the first signaling comprises a first domain, the first domain comprised by the first signaling being used to indicate the second frequency domain interval.

50. The second node according to claim 32 or 33, wherein the first time-frequency resource pool occupies a frequency bandwidth corresponding to a positive integer number of PRBs in the frequency domain and occupies a positive integer number of OFDM symbols in the time domain.

51. The second node according to claim 32 or 33, wherein the second set of time-frequency resources occupies a frequency bandwidth corresponding to a positive integer number of PRBs in the frequency domain and occupies a positive integer number of OFDM symbols in the time domain.

52. The second node of claim 33, wherein the receiver of the first information comprises a first node that demodulates the first signaling by performing no more than the L1 channel estimation in the first pool of time-frequency resources.

53. The second node of claim 33, wherein the L1 second class candidate resource sets are L1 orthogonal CCEs included in the first time-frequency resource pool, respectively.

54. The second node of claim 33, wherein any one of the L1 sets of second-type candidate resources is a CCE.

55. The second node of claim 33, wherein L1 is one of Q candidate integers, the Q candidate coefficient integers being in one-to-one correspondence with Q subcarrier spacings, respectively, the second subcarrier spacing being used to determine the L1 from the Q candidate integers; the Q is a positive integer greater than 1.

56. The second node of claim 34, wherein the first Format is a DCI Format.

57. The second node of claim 34, wherein the first format is one of format 1_0 and format 1_1; or the first format is one of format 0_0 and format 0_1; or the first format is one of format 2_0, format 2_1, format2_2 and format 2_3; the Format 1_0 is DCI Format 1_0, and the Format 1_1 is DCI Format 1_1; the Format 0_0 is DCI Format 0_0, and the Format 0_1 is DCI Format 0_1; the Format 2_0 is DCIFformat 2_0, the Format 2_1 is DCIFformat 2_1, the Format2_2 is DCIFformat 2_2, and the Format 2_3 is DCI Format 2_3.

58. The second node of claim 36, the first information and the second information belonging to the same RRC IE or the first information and the second information respectively belonging to different RRC IEs.

59. A method for a first node for wireless communication, comprising:

receiving first information;

60. The method of claim 59, wherein the first time-frequency resource pool comprises L1 sets of second class candidate resources; any one of the K1 first-type candidate resource sets includes a positive integer of the L1 second-type candidate resource sets, where L1 is related to the second subcarrier spacing; the time-frequency resources occupied by any two second type candidate resource sets in the L1 second type candidate resource sets are orthogonal; the L1 is a positive integer greater than 1.

61. The method of claim 59 or 60, wherein the first node detects the first signaling in the first time-frequency resource pool by performing no more than the K1 blind detections, the K1 blind detections being performed on the K1 sets of candidate resources, respectively.

62. The method of claim 59 or 60, wherein the K1 sets of candidate resources of a first type are for a first format, the first signaling employing the first format.

63. A method according to claim 59 or 60, wherein the first information comprises first sub-information, the first sub-information being used to determine a first coefficient, the first coefficient corresponding to the second sub-carrier spacing, the K1 being equal to the product of the K0 and the first coefficient.

64. The method of the first node of claim 59 or 60, comprising:

second information is received, the second information being used to determine the first pool of time-frequency resources.

65. The method of claim 59 or 60, wherein the first frequency domain interval belongs to licensed spectrum resources and the second frequency domain interval belongs to unlicensed spectrum resources.

66. The method of the first node of claim 59 or 60, comprising:

performing channel sensing over a second frequency domain interval to determine whether a channel is idle;

wherein the first node transmits the first wireless signal in the second set of time-frequency resources in the second frequency domain interval.

67. The method of claim 59 or 60, wherein the first signalling is used by the first node to determine that channel detection is not required for the second frequency domain interval to determine that the second frequency domain interval is idle before the first wireless signal is transmitted.

68. The method of claim 59 or 60, wherein the first signalling is used by the first node to determine that the second frequency domain interval is idle before the first node transmits the first wireless signal.

69. A method as defined in claim 63, wherein the first coefficients are only validated when the second frequency domain interval belongs to an unlicensed frequency domain resource.

70. The method of claim 63 wherein the first coefficient is only valid when the first subcarrier spacing is greater than the second subcarrier spacing.

71. The method of claim 59 or 60, wherein the first time-frequency resource pool corresponds to one CORESET or a plurality of CORESETs.

72. The method of claim 59 or 60, wherein any one of the K1 sets of first-type candidate resources is a PDCCH candidate for first signaling.

73. The method of the first node according to claim 59 or 60, wherein the first information is RRC signaling.

74. The method of claim 59 or 60, wherein any one of the K1 sets of first-type candidate resources occupies N CCEs; the N is equal to 1, or the N is equal to 2, or the N is equal to 4, or the N is equal to 8, or the N is equal to 16.

75. The method of claim 59 or 60, wherein the first signaling is a downlink grant, and the physical layer channel occupied by the first radio signal is PDSCH.

76. The method of claim 59 or 60, wherein the first signaling is an uplink grant, and the physical layer channel occupied by the first radio signal is PUSCH.

77. The method of claim 59 or 60, wherein the first frequency domain interval is one carrier or the first frequency domain interval is one BWP.

78. The method of the first node of claim 59 or 60, wherein the second frequency domain interval is one carrier or the second frequency domain interval is one BWP.

79. The method of a first node according to claim 59 or 60, wherein the first signaling comprises a first domain, the first domain comprised by the first signaling being used to indicate the second frequency domain interval.

80. The method according to claim 59 or 60, wherein the first time-frequency resource pool occupies a frequency bandwidth corresponding to a positive integer number of PRBs in the frequency domain and occupies a positive integer number of OFDM symbols in the time domain.

81. The method according to claim 59 or 60, wherein the second set of time-frequency resources occupies a frequency bandwidth corresponding to a positive integer number of PRBs in the frequency domain and occupies a positive integer number of OFDM symbols in the time domain.

82. The method of claim 60, wherein the first node demodulates the first signaling in the first pool of time-frequency resources by performing no more than the L1 channel estimation.

83. The method of claim 60, wherein the L1 sets of second class candidate resources are L1 orthogonal CCEs comprised by the first time-frequency resource pool, respectively.

84. The method of claim 60, wherein any one of the L1 sets of second-type candidate resources is a CCE.

85. The method of claim 60, wherein L1 is one of Q candidate integers, the Q candidate coefficient integers corresponding one-to-one to Q subcarrier spacings, respectively, the second subcarrier spacing being used to determine the L1 from the Q candidate integers; the Q is a positive integer greater than 1.

86. A method as claimed in claim 59 or 60, wherein the first node determines that the first signalling was received correctly by a CRC check.

87. The method of claim 62, wherein the first Format is a DCI Format.

88. The method of claim 62, wherein the first format is one of format 1_0 and format 1_1; or the first format is one of format 0_0 and format0_1; or the first format is one of format 2_0, format 2_1, format 2_2 and format 2_3; the Format 1_0 is DCI Format 1_0, and the Format 1_1 is DCIFformat 1_1; the format 0_0 is DCIFformat0_0, and the format0_1 is DCIFformat0_1; the Format 2_0 is DCI Format 2_0, the Format 2_1 is DCI Format 2_1, the Format 2_2 is DCI Format 2_2, and the Format 2_3 is DCI Format 2_3.

89. The method of claim 64, the first information and the second information belong to a same RRC IE, or the first information and the second information respectively belong to different RRC IEs.

90. A method for a second node for wireless communication, comprising:

transmitting first information;

91. The method of claim 90, wherein the first time-frequency resource pool comprises L1 sets of second class candidate resources; any one of the K1 first-type candidate resource sets includes a positive integer of the L1 second-type candidate resource sets, where L1 is related to the second subcarrier spacing; the time-frequency resources occupied by any two second type candidate resource sets in the L1 second type candidate resource sets are orthogonal; the L1 is a positive integer greater than 1.

92. A method according to claim 90 or 91, wherein the K1 sets of candidate resources of a first type are for a first format, the first signalling employing the first format.

93. A method according to claim 90 or 91, wherein the first information comprises first sub-information, the first sub-information being used to determine a first coefficient, the first coefficient corresponding to the second sub-carrier spacing, the K1 being equal to the product of the K0 and the first coefficient.

94. A method of a second node according to claim 90 or 91, comprising:

and transmitting second information, wherein the second information is used for determining the first time-frequency resource pool.

95. A method according to claim 90 or 91, wherein the first frequency domain interval belongs to licensed spectrum resources and the second frequency domain interval belongs to unlicensed spectrum resources.

96. A method of a second node according to claim 90 or 91, comprising:

and performing channel sensing on the second frequency domain interval to judge whether a channel is idle.

97. The method of claim 93, wherein said first coefficient is only valid when said second frequency domain interval belongs to an unlicensed frequency domain resource.

98. The method of claim 93, wherein said first coefficient is only valid when said first subcarrier spacing is greater than said second subcarrier spacing.

99. A method according to claim 90 or 91, wherein the first pool of time-frequency resources corresponds to one CORESET or a plurality of CORESETs.

100. The method according to claim 90 or 91, wherein any one of said K1 sets of first type candidate resources is a PDCCH candidate for first signaling.

101. A method of a second node according to claim 90 or 91, wherein the first information is RRC signalling.

102. The method according to claim 90 or 91, wherein any one of said K1 sets of first-type candidate resources occupies N CCEs; the N is equal to 1, or the N is equal to 2, or the N is equal to 4, or the N is equal to 8, or the N is equal to 16.

103. A method according to claim 90 or 91, wherein the first signalling is a downlink grant and the physical layer channel occupied by the first radio signal is PDSCH.

104. A method according to claim 90 or 91, wherein the first signaling is an uplink grant and the physical layer channel occupied by the first radio signal is PUSCH.

105. The method of a second node according to claim 90 or 91, wherein the first frequency domain interval is one carrier or the first frequency domain interval is one BWP.

106. The method of a second node according to claim 90 or 91, wherein the second frequency domain interval is one carrier or the second frequency domain interval is one BWP.

107. A method according to claim 90 or 91, wherein the first signalling comprises a first domain, the first domain comprised by the first signalling being used to indicate the second frequency domain interval.

108. The method according to claim 90 or 91, wherein the first time-frequency resource pool occupies a frequency bandwidth corresponding to a positive integer number of PRBs in the frequency domain and occupies a positive integer number of OFDM symbols in the time domain.

109. The method according to claim 90 or 91, wherein the second set of time-frequency resources occupies a frequency bandwidth corresponding to a positive integer number of PRBs in the frequency domain and occupies a positive integer number of OFDM symbols in the time domain.

110. The method of claim 91, wherein said receiver of said first information comprises a first node that demodulates said first signaling by performing no more than said L1 channel estimation in said first pool of time-frequency resources.

111. The method of claim 91, wherein said L1 second class candidate resource sets are L1 orthogonal CCEs included in said first time-frequency resource pool, respectively.

112. The method of claim 91, wherein any of said L1 second-type candidate resource sets is a CCE.

113. The method of claim 91, wherein L1 is one of Q candidate integers, the Q candidate coefficient integers being in one-to-one correspondence with Q subcarrier spacings, respectively, the second subcarrier spacing being used to determine the L1 from the Q candidate integers; the Q is a positive integer greater than 1.

114. The method of claim 92 wherein the first Format is a DCI Format.

115. The method of claim 92 wherein the first format is one of format 1_0 and format 1_1; or the first format is one of format 0_0 and format0_1; or the first format is one of format 2_0, format 2_1, format 2_2 and format 2_3; the Format 1_0 is DCI Format 1_0, and the Format 1_1 is DCIFformat 1_1; the format 0_0 is DCIFformat0_0, and the format0_1 is DCIFformat0_1; the Format 2_0 is DCI Format 2_0, the Format 2_1 is DCI Format 2_1, the Format 2_2 is DCI Format 2_2, and the Format 2_3 is DCI Format 2_3.

116. The method of claim 94, the first information and the second information belong to a same RRC IE or the first information and the second information respectively belong to different RRC IEs.