CN111726212A

CN111726212A - Method and apparatus in a node used for wireless communication

Info

Publication number: CN111726212A
Application number: CN201910222848.1A
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: 2020-09-29
Anticipated expiration: 2039-03-22
Also published as: CN114944902A; CN111726212B; CN114944902B; CN114944899A

Abstract

A method and apparatus in a node used for wireless communication is disclosed. A first node firstly receives first information, then detects a first signaling in a first time-frequency resource pool in a first frequency domain interval, and operates a first wireless signal 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-class candidate resource sets, and the first signaling occupies one of the K1 first-class 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 relates to the second subcarrier spacing; according to the method and the device, the relation between the subcarrier intervals of the scheduling 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 used for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a scheme and apparatus for control signaling design for scheduling across frequency domain intervals.

Background

In the future, the application scenes of the wireless communication system are more and more diversified, and different application scenes put different performance requirements on the system. In order to meet different performance requirements of multiple application scenarios, research on New air interface technology (NR, New Radio) (or fine Generation, 5G) is determined at #72 sessions of 3GPP (3rd Generation partnership project) RAN (Radio Access Network), and compared with LTE (Long-Term Evolution ) and LTE-a (Long-Term Evolution Advanced, enhanced Long-Term Evolution) systems, an important feature in the NR system Phase-1 (Phase 1) is to support simultaneous transmission of Radio signals using different SCS (sub-carrier Spacing) in different frequency domain intervals, so as to improve flexibility of the system and meet different performance and time delay requirements.

The current NR system does not support the scheduling between two different SCS, i.e. the PDCCH (Physical Downlink Control Channel) carrying the scheduling and the data Channel to be scheduled must be the same SCS. Since RAN1#96 times, 3GPP started to discuss the design issues related to PDCCH blind detection when supporting scheduling between different SCS's in NR Release-16.

Disclosure of Invention

In the current NR system, a UE (User Equipment) calculates the maximum number of blind detections and the maximum number of orthogonal CCEs (Control Channel elements) that need to be supported in one Slot (Slot) and one BWP (Bandwidth Part) based on an SCS of a scheduling carrier, so as to Control the complexity of the UE. In RAN #96 sessions, the latest advances show that blind detection and restrictions on the number of CCEs are determined by the SCS scheduling the CC (Component Carrier) when cross-Carrier scheduling between different SCS's is supported.

In normal cross-CC scheduling, one CC is not scheduled by two CCs simultaneously, i.e. the UE does not blindly detect DCI for one CC on more than 2 CCs simultaneously. However, the above limitation may be changed in LAA (Licensed assisted Access), and an unlicensed CC may be scheduled by both an unlicensed CC and a Licensed CC, in this case, if the unlicensed CC is a CC with a smaller SCS and the Licensed CC is a CC with a larger SCS, the number of blind detections on the Licensed CC will be excessively occupied by the unlicensed CC according to the existing policy, thereby affecting the self-scheduling (self-scheduling) of the Licensed CC.

In view of the above, the present application discloses a solution. It should be noted that, in a case of no conflict, the features in the embodiments and the embodiments in the first node and the second node of the present application can be applied to a base station and a UE (user equipment), and meanwhile, in a case of no conflict, the features in the embodiments and the embodiments of the present application can be arbitrarily combined with each other.

The application discloses a method in a first node used for 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 a 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-class candidate resource sets, and the first signaling occupies one of the K1 first-class candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt first subcarrier intervals, and the subcarriers occupied by the first wireless signal in the frequency domain adopt second subcarrier intervals; the relative relationship of the K0 and the K1 relates 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 a 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-class candidate resource sets, and the first signaling occupies one of the K1 first-class candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt first subcarrier intervals, and the subcarriers occupied by the first wireless signal in the frequency domain adopt second subcarrier intervals; the relative relationship of the K0 and the K1 relates 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 a first wireless signal in a second set of time-frequency resources in a second frequency domain interval;

As an example, one benefit of the above approach is that: the K0 is to scale (crop) the blind detection times in one BWP in one slot for a specific SCS, and further to scale (crop) the K0 for SCS of different scheduled BWPs to ensure that enough blind detection times can 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 example, another benefit of the above method is: the K1 is determined by K0 and the second subcarrier interval, so that the system design is simplified and the control signaling overhead is reduced while the candidate for scheduling the second subcarrier interval is flexibly configured.

According to an aspect of the present application, the above method is characterized in that the first time-frequency resource pool includes L1 second-class candidate resource sets; any one of the K1 first class candidate resource sets comprises a positive integer number of the L1 second class candidate resource sets, the L1 being related to the second subcarrier spacing; the time frequency resources occupied by any two second-class candidate resource sets in the L1 second-class candidate resource sets are orthogonal; l1 is a positive integer greater than 1.

As an example, one benefit of the above approach 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 self-scheduling orthogonal CCEs due to the fact that excessive orthogonal CCEs are reserved for the data channel adopting the second subcarrier interval, and further avoiding the reduction of self-scheduling opportunities.

According to an aspect of the present application, the above method is characterized in that the first node detects the first signaling by performing not more than the K1 blind detections in the first time-frequency resource pool, the K1 blind detections being performed on the K1 sets of candidate resources of the first class, respectively.

According to an aspect of the application, the above method is characterized in that the K1 sets of first type candidate resources are for a first format, and the first signaling is in the first format.

As an example, the above method has the benefits of: the above scaling of the blind detection times and the number of orthogonal CCEs may be configured for DCI formats, and is not limited to the SearchSpace configuration, so as to further improve the flexibility of configuration.

According to an aspect of the application, the above method is characterized in that the first information comprises first sub information used to determine a first coefficient corresponding to the second subcarrier spacing, the K1 being equal to a product of the K0 and the first coefficient.

As an example, the above method has the benefits of: the first coefficient is configured through high-layer signaling, so that the adjustment of the K1 is easier to realize in a practical system.

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

receiving second information;

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

According to an aspect of the application, the method is characterized in that the first frequency-domain interval belongs to a licensed spectral resource and the second frequency-domain interval belongs to an unlicensed spectral resource.

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

According to an aspect of the 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 transmitting the first wireless signal to determine that the second frequency-domain interval is free.

According to an aspect of the 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 application, the above method is characterized in that the first coefficients only take effect when the second frequency-domain interval belongs to an unlicensed frequency-domain resource.

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

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

sending first information;

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

performing a first radio 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-class candidate resource sets, and the first signaling occupies one of the K1 first-class candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt first subcarrier intervals, and the subcarriers occupied by the first wireless signal in the frequency domain adopt second subcarrier intervals; the relative relationship of the K0 and the K1 relates to the second subcarrier spacing; the K1 is a positive integer greater than 1; the performing is transmitting or the performing is receiving.

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

sending first information;

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

sending first information;

sending the second information;

According to an aspect of the 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 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 application transmits the first wireless signal.

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

a first receiver receiving 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 a 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 described above is characterized by comprising:

a first receiver receiving 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 receiving first information;

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

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

a first transmitter that transmits first information;

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

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

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

a first transmitter that transmits first information;

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

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

k0 is to scale (crop) K0 for the number of blind detections in a BWP in a slot under a certain SCS, and further for SCS of different scheduled BWPs to ensure that enough number of blind detections can be left for self-scheduling in the first frequency domain interval to ensure reasonable allocation of PDCCH candidates (candidates) on each scheduled SCS;

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

establishing a link 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 due to the reservation of excessive orthogonal CCEs for the data channel of the second subcarrier spacing; further avoiding reducing the scheduling opportunity of self-scheduling;

the above scaling of the blind detection times and the number of orthogonal CCEs may be configured for DCI formats, and is not limited to the SearchSpace configuration, so as to further improve the flexibility of configuration.

Drawings

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

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

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

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

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

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

FIG. 6 shows a flow diagram of a first wireless signal according to an embodiment of the present application;

FIG. 7 is a schematic diagram illustrating a K1 set of first-class candidate resources according to the present application;

FIG. 8 shows a schematic diagram of L1 sets of candidate resources of the second class according to the present application;

FIG. 9 illustrates a flow diagram for performing channel sensing to determine whether a channel is idle according to one embodiment of the present application;

FIG. 10 shows a flow diagram of energy detection in a target time sub-pool according to an embodiment of the present application;

FIG. 11 shows a flow diagram for determining whether to transmit a first wireless signal based on whether a channel is idle according to one embodiment of the application;

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

FIG. 13 is a schematic diagram illustrating a first message according to the present application;

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

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

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

FIG. 17 shows a block diagram of a structure used in a first node according to an 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 solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.

Example 1

Embodiment 1 illustrates a processing flow diagram of a first node, as shown in fig. 1. In 100 shown in fig. 1, each block represents a step. In embodiment 1, a first node in the present application receives first information in step 101, detects first signaling in a first pool of time-frequency resources in a first frequency domain interval in step 102, and operates a first radio signal in a second set of time-frequency resources 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-class candidate resource sets, and the first signaling occupies one of the K1 first-class candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt first subcarrier intervals, and the subcarriers occupied by the first wireless signal in the frequency domain adopt second subcarrier intervals; the relative relationship of the K0 and the K1 relates 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 receives a 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, the detecting the first signaling in the first time-frequency resource pool in the first frequency-domain interval in the sentence comprises: the first node correctly receives the first signaling in a first pool of time-frequency resources in the first frequency-domain interval.

As an embodiment, the detecting the first signaling in the first time-frequency resource pool in the first frequency-domain interval in the sentence comprises: the first node incorrectly receives the first signaling in a first pool of time-frequency resources in the first frequency-domain interval.

As an embodiment, the detecting the first signaling in the first time-frequency resource pool in the first frequency-domain interval in the sentence comprises: 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 are occupied by the first signaling before detecting the first signaling.

As a sub-embodiment of this embodiment, the meaning of the blind detection includes: and the first node determines that the first signaling is correctly received through a Cyclic Redundancy Check (CRC) 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 120 KHz.

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 120 KHz.

For one 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 the K0 to the K1.

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

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

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

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

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

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

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

For 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 pool of time and frequency resources is equal to K0.

As an embodiment, the first time-frequency resource pool corresponds to a CORESET (Control resource set).

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

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

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

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

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

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

As an embodiment, the first information is a Higher Layer Signaling (high Layer Signaling).

As an embodiment, any one of the K1 first-class 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 a Physical layer Channel occupied by the first wireless signal is a 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 wireless signal is a PUSCH (Physical Uplink Shared Channel).

As an embodiment, the first signaling is a Downlink grant, and a transmission Channel occupied by the first wireless signal is a DL-SCH (Downlink Shared Channel).

As an embodiment, the first signaling is an Uplink grant, and a transmission Channel occupied by the first wireless signal is an 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 resource occupied by the first frequency domain interval and the frequency domain resource 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 a 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 used to indicate the second frequency-domain interval.

For one 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 blocks) in a Frequency domain, and occupies a positive integer number of OFDM (Orthogonal Frequency Division Multiplexing) symbols in a time domain.

For an embodiment, the second set of time-frequency resources comprises 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 a frequency domain, and occupies a positive integer number of OFDM symbols in a 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 a network architecture 200 of NR 5G, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution-enhanced) systems. The NR 5G or LTE network architecture 200 may be referred to as EPS (evolved packet System) 200. The EPS 200 may include one or more UEs (User Equipment) 201, NG-RANs (next generation radio access networks) 202, EPCs (Evolved Packet cores)/5G-CNs (5G-Core networks) 210, HSS (Home Subscriber Server) 220, and internet services 230. The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the EPS provides packet-switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit-switched services or other cellular networks. The NG-RAN includes NR node b (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (point of transmission reception), or some other suitable terminology. The gNB203 provides an access point for the UE201 to the EPC/5G-CN 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a gaming console, a 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 functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 connects to the EPC/5G-CN210 through the S1/NG interface. The EPC/5G-CN210 includes an MME/AMF/UPF211, other MMEs/AMF/UPF 214, an S-GW (Service Gateway) 212, and a P-GW (Packet data Network Gateway) 213. MME/AMF/UPF211 is a control node that handles signaling between UE201 and EPC/5G-CN 210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW 213. The P-GW213 provides UE IP address allocation as well as other functions. The P-GW213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP multimedia subsystem), and a PS streaming service (PSs).

As an embodiment, the UE201 corresponds to the first node in this application, and the gNB corresponds to the second node in this 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 spacings for scheduling signaling and scheduled signals, respectively.

As an embodiment, the UE201 supports that the scheduling signaling and the scheduled signal respectively use different subcarrier spacings.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane and the control plane, fig. 3 showing the radio protocol architecture for the first node and the second node in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above PHY301 and is responsible for the link between the first node and the second node through PHY 301. In the user plane, the L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (radio link Control) sublayer 303, and a PDCP (Packet Data convergence protocol) sublayer 304, which terminate at 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., far end 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 packets, retransmission of lost packets, and reordering of 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 between 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 without the header compression function for the control plane. The Control plane also includes an RRC (Radio Resource Control) sublayer 306 in layer 3 (layer L3). 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 example, the wireless protocol architecture in fig. 3 is applicable to the first node in this application.

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

As an embodiment, the first signaling in this application is generated in the PHY 301.

As an example, the first wireless signal in this application is generated in the PHY 301.

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

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

As an embodiment, the second information in this 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 communications device 450 includes a controller/processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter/receiver 454, and an antenna 452.

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

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

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

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

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

As an embodiment, the first communication device 450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, for use with the at least one processor, the first communication device 450 apparatus at least: receiving first information, detecting first signaling in a first pool of time-frequency resources in a first frequency domain interval, and operating a first wireless signal in a second set of time-frequency resources 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-class candidate resource sets, and the first signaling occupies one of the K1 first-class candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt first subcarrier intervals, and the subcarriers occupied by the first wireless signal in the frequency domain adopt second subcarrier intervals; the relative relationship of the K0 and the K1 relates 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 result in actions comprising: receiving first information, detecting first signaling in a first pool of time-frequency resources in a first frequency domain interval, and operating a first wireless signal in a second set of time-frequency resources 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-class candidate resource sets, and the first signaling occupies one of the K1 first-class candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt first subcarrier intervals, and the subcarriers occupied by the first wireless signal in the frequency domain adopt second subcarrier intervals; the relative relationship of the K0 and the K1 relates 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 executing a first wireless signal 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-class candidate resource sets, and the first signaling occupies one of the K1 first-class candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt first subcarrier intervals, and the subcarriers occupied by the first wireless signal in the frequency domain adopt second subcarrier intervals; the relative relationship of the K0 and the K1 relates to the second subcarrier spacing; the K1 is a positive integer greater than 1; the performing is transmitting or the performing is receiving.

As an embodiment, the second communication device 410 apparatus includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: transmitting first information, transmitting first signaling in a first time-frequency resource pool in a first frequency domain interval, and executing a first wireless signal 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-class candidate resource sets, and the first signaling occupies one of the K1 first-class candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt first subcarrier intervals, and the subcarriers occupied by the first wireless signal in the frequency domain adopt second subcarrier intervals; the relative relationship of the K0 and the K1 relates to the second subcarrier spacing; the K1 is a positive integer greater than 1; the performing is transmitting or the performing is receiving.

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

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

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

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

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

For one embodiment, at least one of the antenna 452, the receiver 454, the multiple antenna receive processor 458, the receive processor 456, the controller/processor 459 is configured to receive second information; at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475 is configured to send second information.

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

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

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

For one embodiment, at least one of the antennas 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller/processor 459 is configured to perform channel sensing in a second frequency domain interval to determine whether a channel is idle.

For one embodiment, at least one of the antennas 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller/processor 475 is configured to perform channel sensing in 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 between a first node U1 and a second node N2; the step identified as F0 in the figure is optional.

For theFirst 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 pool of time-frequency resources in a first frequency domain interval in step S12, and the first wireless signal is received in a second set of time-frequency resources in a second frequency domain interval in step S13.

For theSecond node N2First information is transmitted in step S20, second information is transmitted in step S21, channel sensing is performed on the second frequency domain interval to determine whether the channel is idle in step S22, first signaling is transmitted in a first pool of time-frequency resources in the first frequency domain interval in step S23, and first wireless signals are transmitted in a second set of time-frequency resources in the second frequency domain interval 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-class candidate resource sets, and the first signaling occupies one of the K1 first-class candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt first subcarrier intervals, and the subcarriers occupied by the first wireless signal in the frequency domain adopt second subcarrier intervals; the relative relationship of the K0 and the K1 relates to the second subcarrier spacing; the K1 is a positive integer greater than 1; the second information is used to determine the first pool of time-frequency resources.

For one embodiment, the first time-frequency resource pool includes L1 second-class candidate resource sets; any one of the K1 first class candidate resource sets comprises a positive integer number of the L1 second class candidate resource sets, the L1 being related to the second subcarrier spacing; the time frequency resources occupied by any two second-class candidate resource sets in the L1 second-class candidate resource sets are orthogonal; l1 is a positive integer greater than 1.

As a sub-implementation of this embodiment, the first node U1 demodulates the first signaling by performing not more than the L1 channel estimates in the first pool of time-frequency resources.

As a sub-embodiment of this embodiment, the L1 second-class candidate resource sets are L1 orthogonal CCEs included in 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 all occupy the same number of REs.

As a sub-embodiment of this embodiment, the meaning of the sentence L1 related to the second subcarrier spacing includes: the L1 is one of Q candidate integers, the Q candidate coefficients are respectively in one-to-one correspondence with Q subcarrier spacings, the second subcarrier spacing is used to determine the L1 from the Q candidate integers; q is a positive integer greater than 1.

As a sub-implementation 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, 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, the L3 is greater than the L2, the L3 is a positive integer multiple of the 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 by performing not more than the K1 blind detections in the first pool of time-frequency resources, the K1 blind detections being performed on the K1 sets of first class candidate resources, respectively.

As a sub-embodiment of this embodiment, the above sentence, the detecting, by the first node U1, that the first signaling is detected by performing not more than the K1 times of blind detections in the first time-frequency resource pool includes: the first node U1 does not know which of the K1 sets of first category candidate resources the first signaling occupies before detecting the first signaling.

As a sub-embodiment of this embodiment, the above sentence, the detecting, by the first node U1, that the first signaling is detected by performing not more than the K1 times of blind detections in the first time-frequency resource pool includes: the first node U1 determines that the first signaling was received correctly by a CRC check.

As an embodiment, the K1 first class candidate resource sets are for a first format, the first signaling being in 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 one embodiment, the first information includes first sub-information used to determine a first coefficient corresponding to the second subcarrier spacing, the K1 being 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 is only effective 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, the first coefficient set includes Q candidate coefficients, the Q candidate coefficients respectively correspond to Q subcarrier spacings one-to-one, the second subcarrier spacing is one subcarrier spacing of the Q subcarrier spacings, and a candidate coefficient corresponding to the second subcarrier spacing 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 larger than 0 and smaller than 1.

As an embodiment, the first frequency-domain interval belongs to a licensed spectral resource and the second frequency-domain interval belongs to an unlicensed spectral resource.

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

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

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

As one 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 conducted between a first node U3 and a second node N4; the step identified as F1 in the figure is optional; without conflict, both the example and the sub-examples in example 5 apply to example 6.

For theFirst node U3First information is received in step S30, second information is received in step S31, first signaling is detected in a first pool of time-frequency resources in a first frequency domain interval in step S32, channel sensing is performed on a second frequency domain interval to determine whether a channel is idle in step S33, and a first wireless signal is transmitted in a second set of time-frequency resources in the second frequency domain interval in step S34.

For theSecond node N4First information is transmitted in step S40, second information is transmitted in step S41, first signaling is transmitted in a first pool of time-frequency resources in a first frequency-domain interval in step S42, and a first wireless signal is received in a second set of time-frequency resources 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-class candidate resource sets, and the first signaling occupies one of the K1 first-class candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt first subcarrier intervals, and the subcarriers occupied by the first wireless signal in the frequency domain adopt second subcarrier intervals; the relative relationship of the K0 and the K1 relates to the second subcarrier spacing; the K1 is a positive integer greater than 1; the second information is used to determine the first pool of time-frequency resources.

As an embodiment, the first node U3 detects the first signaling by performing not more than the K1 blind detections in the first pool of time-frequency resources, the K1 blind detections being performed on the K1 sets of first class candidate resources, respectively.

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

As one 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 first-class candidate resource sets. The rectangular boxes shown in FIG. 7 each represent a 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-class Candidate resource sets is a PDCCH Candidate (Candidate).

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

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

As an embodiment, the K1 first-class candidate resource sets include K2 first-class candidate resource sets occupying the same number of REs, and REs occupied by any two first-class candidate resource sets in the K2 first-class 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, where 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 all the REs occupied by the given first-class candidate resource set belong to the REs occupied by the target first-class candidate resource set.

Example 8

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

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

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

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

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

As an embodiment, the REs occupied by at least one of 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 on the target frequency domain resource to determine whether the channel on the target frequency domain resource is free.

The given node in this application generates a first integer in step S91; initializing a first counter to be Q2 in step S92, the Q2 being uniform in distribution probability 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 so, determining whether the first counter is 0 in step S94; if the judgment in the step S94 is YES, it is judged in step S96 that the channel is idle; if the determination result in the step S94 is no, updating the first counter to be minus 1 in step S95 (i.e., the value of the updated first counter is equal to the value of the first counter before updating-1), and performing energy detection in one time sub-pool to determine whether the one time sub-pool is idle; if the judgment result in the step S95 is yes, jumping to the step S94; if the determination in step S95 is negative, jump to step S93, i.e., perform energy detection until an extended time sub-pool is considered free.

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

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

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

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

As an embodiment, the given node performs Q1 energy detections in the Q1 time sub-pools respectively, the Q1 energy detections are energy detections in LBT, and the specific definition and implementation of LBT are see 3gpp ts 36.889.

As an embodiment, the given node performs Q1 energy detections in the Q1 time sub-pools respectively, the Q1 energy detections are energy detections in CCA (Clear Channel Assessment), and the specific definition and implementation of the CCA are referred to in 3GPP TR 36.889.

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

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

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

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

As an example, the Q1 time sub-pools are mutually orthogonal (non-overlapping) two by two in the time domain.

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

As an embodiment, any one of the Q1 time sub-pools is Tsl, which is a time slot period, and the specific definition of Tsl is described in section 4 of 3GPP TS 37.213.

As one embodiment, the channel sensing includes energy detection.

As one embodiment, the channel sensing includes coherent detection of a signature sequence.

As one embodiment, the channel sensing includes non-coherent detection of signature sequences.

As an example, the Q2 is greater than 1, and the duration of the Q2 time subpools in this application are all the same.

As an embodiment, the duration of any one of the Q2 time sub-pools relates to the subcarrier spacing on the target frequency-domain resource.

Example 10

Example 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; judging whether the detected energy is less than a specific threshold in step S1002; if yes, judging that the time slice is idle in step S1003; if not, determining that the time slice is busy in step S1004; the given node is a first node or the given node is a second node.

As an example, the unit of the specific threshold is dBm (decibels).

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

As one embodiment, the particular threshold is related to the second subcarrier spacing.

As one embodiment, the particular threshold is configurable.

As one embodiment, the specific threshold is a constant.

As an 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 free if all of the plurality of consecutive time slices are considered to be free, 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 in the Q1 time sub-pools in this application.

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

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

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

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

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

As a sub-embodiment of the above embodiment, the time slice has a duration of 4 microseconds.

As one embodiment, the particular 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 according to whether a channel is idle, as shown in fig. 11.

The given node determines whether the channel is idle in step S1101; if yes, in step S1102, a first wireless signal is sent in a second time-frequency resource set in a second frequency domain interval; if not, the wireless transmission in the second frequency domain section is abandoned in step S1103; the given node is the first node in this application, or the given node is the second node in this application.

As an embodiment, the step S1103 includes: maintaining zero transmit power over the second frequency domain interval.

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

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

Example 12

Example 12 illustrates a schematic of a time sub-pool, as shown in figure 12. In fig. 12, a box marked by a bold 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 said one time sub-pool cannot be divided exactly by the duration of said time slices, i.e. said one time sub-pool cannot be divided exactly into a 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 example, the duration of the one time sub-pool is 16 microseconds.

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

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

Example 13

Embodiment 13 illustrates a schematic diagram of 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 interval under different aggregation levels; the n1_0, n2_0, n4_0, n8_0 and n16_0 are all positive integers; the sum of the n1_0, n2_0, n4_0, n8_0 and n16_0 is equal to the K0 in the present application; the first information further comprises 4 candidate coefficients, corresponding to P1, P2, P3 and P4 in the graph, respectively; corresponding to subcarrier spacings of 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, a number of blind detections in the first pool of time-frequency resources in one slot for the first signaling is not greater than a product of K0 and P1.

As a sub-embodiment of this embodiment, the number of blind detections with aggregation levels of 1,2,4,8 and 16 is not more than the product of n1_0 and P1, the product of n2_0 and P1, the product of n4_0 and P1, the product of n8_0 and P1 and the product of n16_0 and P1, respectively.

As one embodiment, the second subcarrier spacing is equal to 30kHz, a number of blind detections in the first pool of time-frequency resources in one slot for the first signaling is no greater than a product of K0 and P2.

As a sub-embodiment of this embodiment, the number of blind detections with aggregation levels of 1,2,4,8 and 16 is not more 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 one embodiment, the second subcarrier spacing is equal to 60kHz, a number of blind detections in the first pool of time-frequency resources in one slot for the first signaling is no greater than a product of K0 and P3.

As a sub-embodiment of this embodiment, the number of blind detections with aggregation levels of 1,2,4,8 and 16 is not more 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, the number of blind detections in the first pool of time-frequency resources in one slot for the first signaling is no greater than the product of K0 and P4.

As a sub-embodiment of this embodiment, the number of blind detections with aggregation levels of 1,2,4,8 and 16 is not more 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 an 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 all positive integers; the sum of m1_0, m2_0, m4_0, m8_0 and m16_0 is equal to the K0 in the present application; the first information further comprises 4 candidate coefficients corresponding to R1, R2, R3 and R4 in the graph, respectively; corresponding to subcarrier spacings of 15kHz, 30Khz, 60kHz and 120kHz, respectively; the R1, R2, R3 and R4 are real numbers greater than 0; the DCI-format-x shown in the figure corresponds to the given DCI format.

As an 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 an embodiment, the given DCI format is one of format 2_0, format 2_1, format 2_2, and format 2_ 3.

As one embodiment, the second subcarrier spacing is equal to 15kHz, the number of blind detections in the first pool of time-frequency resources in one slot for the first signaling is no greater than the product of K0 and R1 in a given DCI format.

As a sub-embodiment of this embodiment, the number of blind detections with aggregation levels of 1,2,4,8 and 16 is not more 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 one embodiment, the second subcarrier spacing is equal to 30kHz, the number of blind detections in the first pool of time-frequency resources in one slot for the first signaling is no greater than the product of K0 and R2 in a given DCI format.

As a sub-embodiment of this embodiment, the number of blind detections with aggregation levels of 1,2,4,8 and 16 is not more 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 one embodiment, the second subcarrier spacing is equal to 60kHz, the number of blind detections in the first pool of time-frequency resources in one slot for the first signaling is no greater than the product of K0 and R3 in a given DCI format.

As a sub-embodiment of this embodiment, the number of blind detections with aggregation levels of 1,2,4,8 and 16 is not more 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 one embodiment, the second subcarrier spacing is equal to 120kHz, the number of blind detections in the first pool of time-frequency resources in one slot for the first signaling is no greater than the product of K0 and R4 in a given DCI format.

As a sub-embodiment of this embodiment, the number of blind detections with aggregation levels of 1,2,4,8 and 16 is not more 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 of PRBs in the frequency domain and occupies a positive integer of multicarrier symbols in the time domain along with the corresponding frequency domain bandwidth.

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

For one embodiment, the first time-frequency resource pool is a plurality of CORESET.

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

As a sub-embodiment of this embodiment, the first class of candidate resource sets out of the K3 first class of candidate resource sets and out of the K1 first class of candidate resource sets are used for scheduling transmission of wireless signals out of the second frequency domain interval in one time 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 section, and the first wireless signal in the present application is transmitted in the second frequency domain section.

As an embodiment, PDCCH candidates for scheduling signaling of the first wireless signal are present in both the first frequency domain interval and the second frequency domain interval.

As one embodiment, the first node blindly detects 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 includes a second time-frequency resource pool, and the first node performs blind detection in the second time-frequency resource pool and does not detect scheduling signaling for the first wireless signal.

In one 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 is a block diagram illustrating a structure in a first node, as shown in fig. 17. In fig. 17, a first node 1700 includes a first receiver 1701, a second receiver 1702 and a first transceiver 1703.

A first receiver 1701 receiving first information;

a second receiver 1702 that detects first signaling in a first pool of time-frequency resources in a first frequency-domain interval;

a first transceiver 1703 operating a 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-class candidate resource sets, and the first signaling occupies one of the K1 first-class candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt first subcarrier intervals, and the subcarriers occupied by the first wireless signal in the frequency domain adopt second subcarrier intervals; the relative relationship of the K0 and the K1 relates 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 by performing not more than the K1 blind detections in the first time-frequency resource pool, the K1 blind detections being performed on the K1 sets of candidate resources of the first class, respectively.

For one embodiment, the first receiver 1701 receives second information that is used to determine the first time-frequency resource pool.

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

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

As one 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 coefficients only take effect when the second frequency-domain interval belongs to an unlicensed frequency-domain resource.

As one embodiment, the first coefficient is only effective when the first subcarrier spacing is greater than the second subcarrier spacing.

For one 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 of embodiment 4.

For one embodiment, the second receiver 1702 comprises at least the first 4 of the antenna 452, the receiver 454, the multiple antenna receive processor 458, the receive processor 456, and the controller/processor 459 of embodiment 4.

For one embodiment, the first transceiver 1703 comprises 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 embodiment 4.

Example 18

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

A first transmitter 1801, which transmits first information;

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

a third transceiver 1803 that executes 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-class candidate resource sets, and the first signaling occupies one of the K1 first-class candidate resource sets; the subcarriers occupied by the first signaling in the frequency domain adopt first subcarrier intervals, and the subcarriers occupied by the first wireless signal in the frequency domain adopt second subcarrier intervals; the relative relationship of the K0 and the K1 relates to the second subcarrier spacing; the K1 is a positive integer greater than 1; the performing is transmitting or the performing is receiving.

For one embodiment, the first transmitter 1801 transmits second information, and the second information is used to determine the first time-frequency resource pool.

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

As one 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.

For one embodiment, 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 embodiment 4.

For one embodiment, 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 embodiment 4.

For one embodiment, 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 in embodiment 4.

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

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

Claims

1. A first node configured for wireless communication, comprising:

a first receiver receiving first information;

2. The first node of claim 1, wherein the first pool of time-frequency resources comprises L1 sets of candidate resources of a second type; any one of the K1 first class candidate resource sets comprises a positive integer number of the L1 second class candidate resource sets, the L1 being related to the second subcarrier spacing; the time frequency resources occupied by any two second-class candidate resource sets in the L1 second-class candidate resource sets are orthogonal; l1 is a positive integer greater than 1.

3. The first node according to claim 1 or 2, wherein the first node detects the first signaling by performing not more than the K1 blind detections in the first pool of time-frequency resources, the K1 blind detections being performed on the K1 sets of candidate resources of the first class, respectively.

4. The first node according to any of claims 1 to 3, wherein the K1 sets of candidate resources of the first class are for a first format, the first signaling being in the first format.

5. The first node of any of claims 1-4, wherein the first information comprises first sub-information used to determine a first coefficient corresponding to the second subcarrier spacing, the K1 being equal to a product of the K0 and the first coefficient.

6. The first node according to any of claims 1 to 5, wherein the first receiver receives second information, the second information being used for determining the first time-frequency resource pool.

7. The first node according to any of claims 1-6, wherein the first frequency-domain interval belongs to licensed spectral resources and the second frequency-domain interval belongs to unlicensed spectral resources.

8. A second node for wireless communication, comprising:

a first transmitter that transmits first information;

9. A method in a first node used for wireless communication, comprising:

receiving first information;

10. A method in a second node used for wireless communication, comprising:

sending first information;