WO2020233405A1

WO2020233405A1 - Method and device in node used for wireless communication

Info

Publication number: WO2020233405A1
Application number: PCT/CN2020/088862
Authority: WO
Inventors: 吴克颖; 张晓博
Original assignee: 上海朗帛通信技术有限公司
Priority date: 2019-05-21
Filing date: 2020-05-07
Publication date: 2020-11-26
Also published as: CN111988757B; CN111988757A

Abstract

Disclosed in the present application are a method and device in a node for wireless communication. A first node monitors first information in a first time-frequency resource pool; executes channel sensing in a first time-frequency resource group and obtains a first measured value; if the first measured value is greater than a target threshold, determines that a second time-frequency resource block does not belong to a first candidate resource block set, or otherwise, determines that the second time-frequency resource block belongs to the first candidate resource block set. The first information indicates that a third time-frequency resource block is reserved for first control information; the first control information is used for indicating whether a first transmission block is correctly received; the second time-frequency resource block comprises the third time-frequency resource block. The target threshold is related to whether the first information is detected in the first time-frequency resource pool. The first time-frequency resource group is associated with the second time-frequency resource block. The above-mentioned method ensures the transmission reliability of PSFCH, and improves resource utilization.

Description

Method and device used in wireless communication node

Technical field

This application relates to a transmission method and device in a wireless communication system, and in particular to a transmission method and device related to a side link (Sidelink) in wireless communication.

Background technique

In the future, the application scenarios of wireless communication systems become more and more diversified, and different application scenarios put forward different performance requirements for the system. In order to meet the different performance requirements of multiple application scenarios, it was decided at the plenary meeting of 3GPP (3rd Generation Partner Project) RAN (Radio Access Network, radio access network) #72 that the new radio interface technology (NR, New Radio) (or Fifth Generation, 5G) conducted research and passed the WI (Work Item) of NR at the 75th plenary meeting of 3GPP RAN#, and began to standardize NR.

In response to the rapid development of Vehicle-to-Everything (V2X) business, 3GPP has also started standard formulation and research work under the NR framework. At present, 3GPP has completed the formulation of requirements for 5G V2X services and has written it into the standard TS22.886. 3GPP defines 4 Use Case Groups for 5G V2X services, including: Automated Queued Driving (Vehicles Platnooning), Support for Extended Sensors (Extended Sensors), Semi/Fully Automatic Driving (Advanced Driving) and Remote Driving ( Remote Driving). The NR-based V2X technology research has been initiated at the 3GPP RAN#80 plenary meeting.

Summary of the invention

Compared with the existing LTE (Long-term Evolution) V2X system, NR V2X has a notable feature that supports unicast and multicast and supports HARQ (Hybrid Automatic Repeat reQuest) functions. PSFCH (Physical Sidelink Feedback Channel, physical secondary link feedback channel) channel is introduced for HARQ feedback on the secondary link. In order to ensure the reliability of HARQ feedback, in mode NR V2X mode (Mode) 2, when UE (User Equipment) selects resources for V2X transmission based on channel perception, it is necessary to consider the impact on the PSFCH channel.

To solve the above problems, this application discloses a solution. It should be noted that, in the case of no conflict, the embodiments in the first node of the present application and the features in the embodiments can be applied to the second node, and vice versa. In the case of no conflict, the embodiments of the application and the features in the embodiments can be combined with each other arbitrarily.

This application discloses a method used in a first node of wireless communication, which is characterized in that it includes:

Monitor the first information in the first time-frequency resource pool;

Perform channel sensing in the first time-frequency resource group, and obtain a first measurement value;

When the first measurement value is greater than the target threshold, it is determined that the second time-frequency resource block does not belong to the first candidate resource block set; when the first measurement value is not greater than the target threshold, it is determined that the second time-frequency resource block The resource block belongs to the first candidate resource block set;

The first information indicates that the third time-frequency resource block is reserved for the first control information, and the first control information is used to indicate whether the first transmission block is correctly received, and the second time-frequency resource block Including the third time-frequency resource block; the target threshold is related to whether the first information is detected in the first time-frequency resource pool; the first time-frequency resource group and the second time-frequency resource group The resource block is associated.

As an embodiment, the problem to be solved by this application includes: in NR V2X mode (Mode) 2, how to design channel sensing and resource selection to reduce interference to the PSFCH channel. The above method selects different power detection thresholds according to whether there is a PSFCH channel on the candidate resource, and solves this problem.

As an embodiment, the characteristic of the above method is that the second time-frequency resource block is a candidate resource, and the target threshold is used to determine whether the second time-frequency resource block needs to be excluded. The first node selects different target thresholds according to whether the second time-frequency resource block includes a PSFCH channel. The advantage of the above method is to realize the differential protection of PSFCH and PSSCH (Physical Sidelink Shared Channel), and to ensure that the PSFCH has higher transmission reliability.

According to an aspect of the present application, it is characterized in that the first time-frequency resource group is related to whether the first information is detected in the first time-frequency resource pool.

As an embodiment, the characteristic of the above method is that when the first information is detected in the first time-frequency resource pool, the first time-frequency resource group includes the time-frequency resource occupied by the first transmission block. Frequency resources. The advantage of the above method is that it is determined whether the candidate resource carrying the PSFCH is excluded according to the received power of the PSSCH corresponding to the PSFCH, which improves the accuracy of channel perception.

According to one aspect of this application, it is characterized in that it includes:

First signaling is detected in the first time-frequency resource pool;

Wherein, the first node detects the first information in the first time-frequency resource pool, and the first signaling carries the first information.

According to an aspect of the present application, it is characterized in that the first signaling indicates the first time-frequency resource group; the first transmission block is transmitted in the first time-frequency resource group.

According to an aspect of the present application, it is characterized in that the first reference signal is transmitted in the first time-frequency resource group; and the measurement on the first reference signal is used to generate the first measurement value.

Selecting M candidate resource blocks from the first candidate resource block set, where M is a positive integer;

Sending the first signal in the M candidate resource blocks;

Wherein, the first candidate resource block set includes M0 candidate resource blocks, and any one of the M candidate resource blocks is one candidate resource block among the M0 candidate resource blocks; M0 is not less than The positive integer of M.

Receive the second message;

Wherein, the second information indicates that a second time-frequency resource group is reserved; the second time-frequency resource block and the second time-frequency resource group are not orthogonal.

Perform the channel sensing in the third time-frequency resource group, and obtain a second measurement value;

When the second measurement value is greater than the third threshold, it is determined that the fourth time-frequency resource block does not belong to the first candidate resource block set; when the second measurement value is not greater than the third threshold, it is determined that the The fourth time-frequency resource block belongs to the first candidate resource block set;

Wherein, the first information is detected in the first time-frequency resource pool; the third time-frequency resource group belongs to the second time-frequency resource group, the fourth time-frequency resource block and the first The two time-frequency resource groups are not orthogonal; the third time-frequency resource block and the fourth time-frequency resource block are orthogonal in the time-frequency domain.

As an embodiment, the characteristic of the above method is that the fourth time-frequency resource block and the third time-frequency resource block respectively include a time slot or subframe in the time domain that does not carry PSFCH and carries PSFCH. The above method has the advantage of reducing the granularity of channel perception and resource selection, and improving resource utilization.

Receive third information;

Wherein, the third information is used to determine the first time-frequency resource pool.

According to an aspect of the present application, it is characterized in that the first node is a user equipment.

According to an aspect of the present application, it is characterized in that the first node is a relay node.

This application discloses a method used in a second node of wireless communication, which is characterized in that it includes:

Sending the first information in the first time-frequency resource pool, or giving up sending the first information in the first time-frequency resource pool;

Wherein, the first information indicates that the third time-frequency resource block is reserved for the first control information, the first control information is used to indicate whether the first transmission block is correctly received, and the second time-frequency resource block includes all The third time-frequency resource block; the channel sensing performed in the first time-frequency resource group is used to determine the first measurement value; when the first measurement value is greater than the target threshold, the second time-frequency resource block Is judged not to belong to the first candidate resource block set; when the first measurement value is not greater than the target threshold, the second time-frequency resource block is judged to belong to the first candidate resource block set; the target threshold It is related to whether the first information is sent in the first time-frequency resource pool; the first time-frequency resource group is associated with the second time-frequency resource block.

According to an aspect of the present application, it is characterized in that the first time-frequency resource group is related to whether to send the first information in the first time-frequency resource pool.

Sending first signaling in the first time-frequency resource pool;

Wherein, the second node sends the first information in the first time-frequency resource pool, and the first signaling carries the first information.

Sending a first reference signal in the first time-frequency resource group;

Wherein, the measurement for the first reference signal is used to generate the first measurement value.

Send the second message;

According to an aspect of the present application, it is characterized in that the second node is a user equipment.

According to an aspect of the present application, it is characterized in that the second node is a relay node.

This application discloses a first node device used for wireless communication, which is characterized in that it includes:

The first receiver monitors the first information in the first time-frequency resource pool, performs channel sensing in the first time-frequency resource group, and obtains the first measurement value;

The first processor, when the first measured value is greater than the target threshold, judges that the second time-frequency resource block does not belong to the first candidate resource block set; when the first measured value is not greater than the target threshold, judges all The second time-frequency resource block belongs to the first candidate resource block set;

This application discloses a second node device used for wireless communication, which is characterized in that it includes:

A second processor, sending the first information in the first time-frequency resource pool, or giving up sending the first information in the first time-frequency resource pool;

As an embodiment, compared with the traditional solution, this application has the following advantages:

According to whether the PSFCH channel exists on the candidate resource, different power detection thresholds are selected, which realizes the differential protection of PSFCH and PSSCH, and ensures that the PSFCH channel has higher transmission reliability.

According to the received power of the PSSCH corresponding to the PSFCH, it is determined whether the candidate resource carrying the PSFCH is excluded, which improves the accuracy of channel perception.

The granularity of channel perception and resource selection is reduced, and resource utilization is improved.

Description of the drawings

By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes and advantages of the present application will become more apparent:

FIG. 1 shows a flowchart of monitoring first information to obtain a first measurement value and judging whether a second time-frequency resource block belongs to a first candidate resource block set according to an embodiment of the present application;

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

Fig. 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a 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;

Figure 5 shows a flow chart of transmission according to an embodiment of the present application;

Fig. 6 shows a schematic diagram of a first time-frequency resource pool according to an embodiment of the present application;

FIG. 7 shows a schematic diagram of a given timing frequency resource group according to an embodiment of the present application;

Fig. 8 shows a schematic diagram of a given resource block according to an embodiment of the present application;

FIG. 9 shows a schematic diagram related to a target threshold and whether first information is detected in a first time-frequency resource pool according to an embodiment of the present application;

FIG. 10 shows a schematic diagram related to a target threshold and whether first information is detected in a first time-frequency resource pool according to an embodiment of the present application;

FIG. 11 shows a schematic diagram of the association between a first time-frequency resource group and a second time-frequency resource block according to an embodiment of the present application;

FIG. 12 shows a schematic diagram related to a first time-frequency resource group and whether first information is detected in the first time-frequency resource pool according to an embodiment of the present application;

Fig. 13 shows a schematic diagram of first signaling and first information according to an embodiment of the present application;

FIG. 14 shows a schematic diagram of first signaling indicating a first time-frequency resource group according to an embodiment of the present application;

Fig. 15 shows a schematic diagram of a first reference signal according to an embodiment of the present application;

Fig. 16 shows a schematic diagram of a first candidate resource block set and M candidate resource blocks according to an embodiment of the present application;

FIG. 17 shows a schematic diagram of second information and a second time-frequency resource group according to an embodiment of the present application;

FIG. 18 shows a schematic diagram of a third time-frequency resource group, a fourth time-frequency resource block, and a third time-frequency resource block according to an embodiment of the present application;

FIG. 19 shows a schematic diagram of a third time-frequency resource group, a fourth time-frequency resource block, and a third time-frequency resource block according to an embodiment of the present application;

FIG. 20 shows a schematic diagram of third information according to an embodiment of the present application;

Fig. 21 shows a structural block diagram of a processing apparatus used in a first node device according to an embodiment of the present application;

Fig. 22 shows a structural block diagram of a processing apparatus for a device in a second node according to an embodiment of the present application.

Detailed ways

The technical solutions of the present application will be described in further detail below with reference to the accompanying drawings. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily if there is no conflict.

Example 1

Embodiment 1 illustrates a flowchart of monitoring first information according to an embodiment of the present application to obtain the first measurement value and judging whether the second time-frequency resource block belongs to the first candidate resource block set, as shown in FIG. 1. In 100 shown in FIG. 1, each box represents a step. In particular, the order of the steps in the box does not represent a specific time sequence between the steps.

In Embodiment 1, the first node in this application monitors first information in the first time-frequency resource pool in step 101; performs channel sensing in the first time-frequency resource group in step 102, and obtains The first measurement value; in step 103, when the first measurement value is greater than the target threshold, it is determined that the second time-frequency resource block does not belong to the first candidate resource block set; when the first measurement value is not greater than the target threshold When determining that the second time-frequency resource block belongs to the first candidate resource block set. The first information indicates that the third time-frequency resource block is reserved for the first control information, and the first control information is used to indicate whether the first transmission block is correctly received, and the second time-frequency resource block Including the third time-frequency resource block; the target threshold is related to whether the first information is detected in the first time-frequency resource pool; the first time-frequency resource group and the second time-frequency resource group The resource block is associated.

As an embodiment, the first information is dynamic information.

As an embodiment, the first information is layer 1 (L1) information.

As an embodiment, the first information is layer 1 (L1) control information.

As an embodiment, the first information is carried by physical layer signaling.

As an embodiment, the first information is carried by layer 1 (L1) signaling.

As an embodiment, the first information is carried by layer 1 (L1) control signaling.

As an embodiment, the first information includes SCI (Sidelink Control Information, secondary link control information).

As an embodiment, the first information includes one or more fields in an SCI.

As an embodiment, the first information includes information carried by one or more fields in an SCI.

As an embodiment, the first information is transmitted by multicast (Groupcast).

As an embodiment, the first information is unicast (Unicast) transmission.

As an embodiment, the first information is transmitted on the side link (SideLink).

As an embodiment, the first information is transmitted through the PC5 interface.

As an embodiment, the phrase monitoring the first information includes: monitoring signaling carrying the first information.

As an embodiment, the phrase monitoring the first information includes: monitoring the first signaling in this application.

As an embodiment, the phrase monitoring the first information includes: monitoring signaling, and determining whether the detected signaling carries the first information.

As a sub-embodiment of the above-mentioned embodiment, the signaling is layer 1 (L1) control signaling.

As a sub-embodiment of the foregoing embodiment, the signaling includes SCI.

As a sub-embodiment of the foregoing embodiment, the signaling includes one or more fields in an SCI.

As an embodiment, the monitoring refers to receiving based on energy detection, that is, sensing the energy of the wireless signal in the first time-frequency resource pool, and averaging to obtain the received energy. If the received energy is greater than the second given threshold, it is determined that the first information is detected; otherwise, it is determined that the first information is not detected.

As an embodiment, the monitoring refers to coherent reception, that is, coherent reception is performed in the first time-frequency resource pool, and the energy of the signal obtained after the coherent reception is measured. If the energy of the signal obtained after the coherent reception is greater than a first given threshold, it is determined that the first information is detected; otherwise, it is determined that the first information is not detected.

As an embodiment, the monitoring refers to coherent reception, that is, coherent reception is performed in the first time-frequency resource pool, and the energy of the signal obtained after the coherent reception is measured. If the energy of the signal obtained after the coherent reception is greater than a first given threshold, then it is determined that a given signaling is detected; if the given signaling carries the first information, it is determined that the First information; if the energy of the signal obtained after the coherent reception is not greater than the first given threshold or the given signaling does not carry the first information, otherwise it is determined that the first information is not detected information.

As an embodiment, the monitoring refers to blind detection, that is, receiving a signal in the first time-frequency resource pool and performing a decoding operation, if the decoding is determined according to the CRC (Cyclic Redundancy Check) bit If it is correct, it is determined that the first information is detected; otherwise, it is determined that the first information is not detected.

As an embodiment, the monitoring refers to blind detection, that is, receiving a signal in the first time-frequency resource pool and performing a decoding operation. If it is determined that the decoding is correct according to the CRC bit, it is determined that a given signal is detected. , If the given signaling carries the first information, it is determined that the first information is detected; if the decoding error is determined according to the CRC bit or the given signaling does not carry the first information, otherwise it is determined The first information is not detected.

As an embodiment, the channel sensing includes sensing.

As an embodiment, the channel sensing includes energy detection, that is, sensing the energy of the wireless signal and averaging to obtain the average received energy.

As an embodiment, the channel sensing includes power detection, that is, sensing the power of the wireless signal and averaging to obtain the average received power.

As an embodiment, the channel sensing includes coherent detection, that is, performing coherent reception and measuring the average energy of the signal obtained after the coherent reception.

As an embodiment, the channel sensing includes coherent detection, that is, performing coherent reception and measuring the average power of the signal obtained after the coherent reception.

As an embodiment, the first measurement value includes RSRP (Reference Signal Received Power, reference signal received power).

As an embodiment, the first measurement value includes L1 (layer 1)-RSRP.

As an embodiment, the first measurement value includes RSRQ (Reference Signal Received Quality, reference signal received quality).

As an embodiment, the first measurement value includes CQI (Channel Quality Indicator, channel quality indicator).

As an embodiment, the first measurement value includes RSSI (Received Signal Strength Indicator, received signal strength indicator).

As an embodiment, the unit of the first measurement value is Watt.

As an embodiment, the unit of the target threshold is watts.

As an embodiment, the unit of the first measurement value is dBm (millidecibels).

As an embodiment, the unit of the target threshold is dBm.

As an embodiment, the target threshold is related to a first priority set, and the first priority set includes a positive integer number of priorities (Priority).

As an embodiment, the first priority set includes 2 priorities (Priority).

As an embodiment, the first priority set includes only one priority (Priority).

As an embodiment, the first priority set includes the priority of the first transport block.

As an embodiment, the second time-frequency resource group in this application is reserved for K3 transmission blocks, and K3 is a positive integer; the first priority set includes the priorities of the K3 transmission blocks.

As an embodiment, the signaling carrying the second information in the present application indicates a first priority, and the first priority set includes the first priority.

As an embodiment, the first priority set includes the priority of the first signal in this application.

As an embodiment, the first signaling in this application indicates the priority of the first transport block.

As an embodiment, the first information explicitly indicates that the third time-frequency resource block is reserved for the first control information.

As an embodiment, the first information implicitly indicates that the third time-frequency resource block is reserved for the first control information.

As an embodiment, the first control information includes HARQ-ACK (Hybrid Automatic Repeat reQuest-Acknowledgement, hybrid automatic repeat request confirmation).

As an embodiment, the first control information includes CSI (Channel State Information, channel state information).

As an embodiment, the first control information is transmitted on the side link (SideLink).

As an embodiment, the first control information is transmitted through the PC5 interface.

As an embodiment, the first control information is transmitted on the PSFCH.

As an embodiment, the first control information is transmitted on PSCCH (Physical Sidelink Control Channel, physical secondary link control channel).

As an embodiment, the first control information is transmitted on the PSSCH.

As an embodiment, that the third time-frequency resource block of the sentence is reserved for the first control information includes: the third time-frequency resource block is reserved for the information bits included in the first control information.

As an embodiment, the sentence that the third time-frequency resource block is reserved for the first control information includes: the third time-frequency resource block is reserved for the transmission of the wireless signal carrying the first control information.

As an embodiment, the third time-frequency resource block of the sentence being reserved for the first control information includes: the sender of the first control information sends the first control information in the third time-frequency resource block There is no need to perform the channel sensing before.

As an embodiment, the first transport block includes a TB (Transport Block).

As an embodiment, the time-frequency resource occupied by the first transmission block belongs to the first time-frequency resource group.

As an embodiment, the time-frequency resource occupied by the first transmission block does not belong to the first time-frequency resource group.

As an embodiment, the first node detects the first information in the first time-frequency resource pool, and the time-frequency resource occupied by the first transmission block belongs to the first time-frequency resource group.

As an embodiment, the first node detects the first information in the first time-frequency resource pool, and the time-frequency resource occupied by the first transmission block does not belong to the first time-frequency resource group .

As an embodiment, the first transmission block is transmitted on the side link (SideLink).

As an embodiment, the first transmission block is transmitted through the PC5 interface.

As an embodiment, the first transmission block is transmitted on the PSSCH.

As an embodiment, the second time-frequency resource block has nothing to do with whether the first information is detected in the first time-frequency resource pool.

As an embodiment, the second time-frequency resource block is related to whether the first information is detected in the first time-frequency resource pool.

As an embodiment, when the first information is detected in the first time-frequency resource pool, the length of the time-domain resource occupied by the second time-frequency resource block is smaller than when the first time-frequency resource is The length of the time domain resource occupied by the second time-frequency resource block when the first information is not detected in the pool.

As an embodiment, the second time-frequency resource block includes the third time-frequency resource block and the fourth time-frequency resource block, and the third time-frequency resource block and the fourth time-frequency resource block are The domain is orthogonal.

As a sub-embodiment of the foregoing embodiment, the third time-frequency resource block and the fourth time-frequency resource block are orthogonal in the time domain.

As a sub-embodiment of the foregoing embodiment, the fourth time-frequency resource block is earlier than the third time-frequency resource block in the time domain.

As a sub-embodiment of the foregoing embodiment, the end time of the fourth time-frequency resource block is no later than the start time of the third time-frequency resource block.

As a sub-embodiment of the foregoing embodiment, the third time-frequency resource block and the fourth time-frequency resource block are non-orthogonal in the time domain.

As a sub-embodiment of the foregoing embodiment, the fourth time-frequency resource block and the third time-frequency resource block occupy the same frequency domain resources.

As a sub-embodiment of the foregoing embodiment, the frequency domain resources occupied by the fourth time-frequency resource block include frequency domain resources occupied by the third time-frequency resource block.

As an embodiment, the second time-frequency resource block is the third time-frequency resource block.

As an embodiment, the second time-frequency resource block and the third time-frequency resource block completely overlap.

As an embodiment, the first time-frequency resource group has nothing to do with whether the first information is detected in the first time-frequency resource pool.

As an embodiment, the first information is transmitted on PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel).

As an embodiment, the first information is transmitted on the PSCCH.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in FIG. 2.

Figure 2 illustrates the network architecture 200 of LTE (Long-Term Evolution), LTE-A (Long-Term Evolution Advanced, Enhanced Long-Term Evolution) and the future 5G system. The network architecture 200 of LTE, LTE-A and future 5G systems is called EPS (Evolved Packet System) 200. EPS 200 may include one or more UE (User Equipment) 201, and a UE 241 that performs sidelink communication with UE 201, NG-RAN (Next Generation Radio Access Network) 202, 5G-CN ( 5G-CoreNetwork, 5G core network)/EPC (Evolved Packet Core, evolved packet core) 210, HSS (Home Subscriber Server) 220, and Internet service 230. EPS200 can be interconnected with other access networks, but these entities/interfaces are not shown for simplicity. As shown in FIG. 2, EPS200 provides packet switching services. However, those skilled in the art will readily understand that various concepts presented throughout this application can be extended to networks that provide circuit switching services. NG-RAN202 includes NR (New Radio) Node B (gNB) 203 and other gNB204. gNB203 provides user and control plane protocol termination towards UE201. The gNB203 can be connected to other gNB204 via an X2 interface (for example, backhaul). gNB203 may also be called a base station, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), TRP (transmit and receive point), or some other suitable terminology. gNB203 provides UE201 with an access point to 5G-CN/EPC210. Examples of UE201 include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players ( For example, MP3 players), cameras, game consoles, drones, aircrafts, narrowband physical network equipment, machine type communication equipment, land vehicles, automobiles, wearable devices, or any other similar functional devices. Those skilled in the art can also refer to UE201 as a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, Mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client or some other suitable term. gNB203 is connected to 5G-CN/EPC210 through the S1 interface. 5G-CN/EPC210 includes MME (Mobility Management Entity)/AMF (Authentication Management Field)/UPF (User Plane Function, user plane) Function) 211, other MME/AMF/UPF 214, S-GW (Service Gateway, Serving Gateway) 212, and P-GW (Packet Date Network Gateway, Packet Data Network Gateway) 213. MME/AMF/UPF211 is a control node that handles signaling between UE201 and 5G-CN/EPC210. Generally, MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet Protocol, Internet Protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW213. The P-GW213 provides UE IP address allocation and other functions. The P-GW213 is connected to the Internet service 230. The Internet service 230 includes Internet protocol services corresponding to operators, and specifically may include Internet, Intranet, IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) and packet switching (Packet switching) services.

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

As an embodiment, the first node in this application includes the UE241.

As an embodiment, the second node in this application includes the UE241.

As an embodiment, the second node in this application includes the UE201.

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

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

As an embodiment, the air interface between the UE201 and the UE241 is a PC-5 interface.

As an embodiment, the radio link between the UE 201 and the UE 241 is a side link (Sidelink).

As an embodiment, the first node in this application and the second node in this application are respectively a terminal within the coverage of the gNB203.

As an example, the first node in this application is a terminal covered by the gNB203, and the second node in this application is a terminal outside the coverage of the gNB203.

As an embodiment, the first node in this application is a terminal outside the coverage of the gNB203, and the second node in this application is a terminal within the coverage of the gNB203.

As an embodiment, the first node in this application and the second node in this application are respectively a terminal outside the coverage of the gNB203.

As an embodiment, the UE 201 and the UE 241 support unicast (Unicast) transmission.

As an embodiment, the UE 201 and the UE 241 support broadcast (Broadcast) transmission.

As an embodiment, the UE 201 and the UE 241 support multicast (Groupcast) transmission.

As an embodiment, the sender of the first information in this application includes the UE201.

As an embodiment, the recipient of the first information in this application includes the UE241.

As an embodiment, the sender of the first information in this application includes the UE241.

As an embodiment, the recipient of the first information in this application includes the UE201.

Example 3

Embodiment 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application, as shown in FIG. 3.

Fig. 3 is a schematic diagram illustrating an embodiment of the radio protocol architecture for the user plane and the control plane. Fig. 3 shows the radio protocol architecture for UE and gNB with three layers: layer 1, layer 2, and layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to as PHY301 herein. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between UE and gNB through PHY301. In the user plane, the L2 layer 305 includes MAC (Medium Access Control) sublayer 302, RLC (Radio Link Control, radio link control protocol) sublayer 303, and PDCP (Packet Data Convergence Protocol), packet data Convergence protocol) sublayers 304, these sublayers terminate at the gNB on the network side. Although not shown, the UE may have several protocol layers above the L2 layer 305, including a network layer (e.g., IP layer) terminating at the P-GW 213 on the network side and a network layer terminating at the other end of the connection (e.g., Remote UE, server, etc.) at the application layer. 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, provides security by encrypting data packets, and provides handover support for UEs between gNBs. The RLC sublayer 303 provides segmentation and reassembly of upper-layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception caused by HARQ (Hybrid Automatic Repeat reQuest, hybrid automatic repeat request). The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (for example, resource blocks) in a cell among UEs. The MAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the UE and gNB is substantially the same for the physical layer 301 and the L2 layer 305, but there is no header compression function for the control plane. The control plane also includes an RRC (Radio Resource Control, radio resource control) sublayer 306 in layer 3 (L3 layer). The RRC sublayer 306 is responsible for obtaining radio resources (ie, radio bearers) and configuring the lower layer using RRC signaling between the gNB and the UE.

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

As an embodiment, the wireless protocol architecture in FIG. 3 is applicable to the second node in this application.

As an embodiment, the first information in this application is generated in the PHY301.

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

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

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

As an embodiment, the first reference signal in this application is generated in the PHY301.

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

As an embodiment, the second information in this application is generated in the PHY301.

As an embodiment, the second information in this application is generated in the MAC sublayer 302.

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

Example 4

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

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

The second communication device 450 includes a controller/processor 459, a memory 460, a data source 467, a transmitting processor 468, a receiving processor 456, a multi-antenna transmitting processor 457, a multi-antenna receiving processor 458, and a transmitter/receiver 454 And antenna 452.

In the transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, the upper layer data packet from the core network is provided to the controller/processor 475. The controller/processor 475 implements the functionality of the L2 layer. In the DL, the controller/processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logic and transmission channels, and multiplexing of the second communication device 450 based on various priority metrics. Radio resource allocation. The controller/processor 475 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the second communication device 450. The transmission processor 416 and the multi-antenna transmission processor 471 implement various signal processing functions for the L1 layer (ie, physical layer). The transmit processor 416 implements encoding and interleaving to facilitate forward error correction (FEC) at the second communication device 450, and 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)) constellation mapping. The multi-antenna transmission processor 471 performs digital spatial precoding on the coded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing to generate one or more parallel streams. The transmit processor 416 then maps each parallel stream to subcarriers, multiplexes the modulated symbols with reference signals (e.g., pilot) in the time and/or frequency domain, and then uses inverse fast Fourier transform (IFFT) ) To generate a physical channel carrying a multi-carrier symbol stream in the time domain. Subsequently, the multi-antenna transmission processor 471 performs transmission simulation precoding/beamforming operations on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmission processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

In the transmission from the first communication device 410 to the second communication device 450, at the second communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated on the radio frequency carrier, and converts the radio frequency stream into a baseband multi-carrier symbol stream and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs reception analog precoding/beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a Fast Fourier Transform (FFT) to convert the baseband multi-carrier symbol stream after receiving the analog precoding/beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and reference signal are demultiplexed by the receiving processor 456. The reference signal will be used for channel estimation. The data signal is recovered by the multi-antenna receiving processor 458 after multi-antenna detection. The communication device 450 is any parallel stream to the destination. The symbols on each parallel stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving processor 456 then decodes and deinterleaves the soft decision to recover the upper layer data and control signals transmitted by the first communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller/processor 459. The controller/processor 459 implements the functions of the L2 layer. The controller/processor 459 may be associated with a memory 460 that stores program codes and data. The memory 460 may be referred to as a computer-readable medium. In the DL, the controller/processor 459 provides demultiplexing between transmission and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals can also be provided to L3 for L3 processing. The controller/processor 459 is also responsible for error detection using acknowledgement (ACK) and/or negative acknowledgement (NACK) protocols to support HARQ operations.

In the transmission from the second communication device 450 to the first communication device 410, at the second communication device 450, a data source 467 is used to provide upper layer data packets to the controller/processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission function at the first communication device 410 described in the DL, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and logical AND based on the wireless resource allocation of the first communication device 410 Multiplexing between transport channels to implement L2 layer functions for user plane and control plane. The controller/processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the first communication device 410. The transmission processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmission processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, followed by transmission The processor 468 modulates the generated parallel stream into a multi-carrier/single-carrier symbol stream, which is subjected to an analog precoding/beamforming operation in the multi-antenna transmission processor 457 and then provided to different antennas 452 via the transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmission processor 457 into a radio frequency symbol stream, and then provides it to the antenna 452.

In the transmission from the second communication device 450 to the first communication device 410, the function at the first communication device 410 is similar to that in the transmission from the first communication device 410 to the second communication device 450. The receiving function at the second communication device 450 described in the transmission. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals into baseband signals, and provides the baseband signals to the multi-antenna receiving processor 472 and the receiving processor 470. The receiving processor 470 and the multi-antenna receiving processor 472 jointly implement the functions of the L1 layer. The controller/processor 475 implements L2 layer functions. The controller/processor 475 may be associated with a memory 476 that stores program codes and data. The memory 476 may be referred to as a computer-readable medium. The controller/processor 475 provides demultiplexing between transmission and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the second communication device 450. The upper layer data packet from the controller/processor 475 may be provided to the core network. The controller/processor 475 is also responsible for error detection using ACK and/or NACK protocols to support HARQ operations.

As an embodiment, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to interact with the Use at least one processor together. The second communication device 450 means at least: monitor the first information in this application in the first time-frequency resource pool in this application; execute in the first time-frequency resource group in this application The channel in this application is sensed, and the first measurement value in this application is obtained; when the first measurement value is greater than the target threshold, it is determined that the second time-frequency resource block in this application does not belong to this application. The first candidate resource block set in the application; when the first measurement value is not greater than the target threshold, it is determined that the second time-frequency resource block belongs to the first candidate resource block set. The first information indicates that the third time-frequency resource block is reserved for the first control information, and the first control information is used to indicate whether the first transmission block is correctly received, and the second time-frequency resource block Including the third time-frequency resource block; the target threshold is related to whether the first information is detected in the first time-frequency resource pool; the first time-frequency resource group and the second time-frequency resource group The resource block is associated.

As an embodiment, the second communication device 450 includes: a memory storing a computer-readable instruction program, which generates actions when executed by at least one processor, and the actions include: The first information in the application is monitored in the first time-frequency resource pool in the application; the channel sensing in the application is performed in the first time-frequency resource group in the application, and the The first measurement value in the application; when the first measurement value is greater than the target threshold, determine that the second time-frequency resource block in this application does not belong to the first candidate resource block set in this application; When the first measurement value is not greater than the target threshold, it is determined that the second time-frequency resource block belongs to the first candidate resource block set. The first information indicates that the third time-frequency resource block is reserved for the first control information, and the first control information is used to indicate whether the first transmission block is correctly received, and the second time-frequency resource block Including the third time-frequency resource block; the target threshold is related to whether the first information is detected in the first time-frequency resource pool; the first time-frequency resource group and the second time-frequency resource group The resource block is associated.

As an embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to interact with the Use at least one processor together. The first communication device 410 means at least: send the first information in this application in the first time-frequency resource pool in this application, or give up sending the first information in the first time-frequency resource pool First information. Wherein, the first information indicates that the third time-frequency resource block is reserved for the first control information, the first control information is used to indicate whether the first transmission block is correctly received, and the second time-frequency resource block includes all The third time-frequency resource block; the channel sensing performed in the first time-frequency resource group is used to determine the first measurement value; when the first measurement value is greater than the target threshold, the second time-frequency resource block Is judged not to belong to the first candidate resource block set; when the first measurement value is not greater than the target threshold, the second time-frequency resource block is judged to belong to the first candidate resource block set; the target threshold It is related to whether the first information is sent in the first time-frequency resource pool; the first time-frequency resource group is associated with the second time-frequency resource block.

As an embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program, which generates actions when executed by at least one processor, and the actions include: Send the first information in this application in the first time-frequency resource pool in the application, or give up sending the first information in the first time-frequency resource pool. Wherein, the first information indicates that the third time-frequency resource block is reserved for the first control information, the first control information is used to indicate whether the first transmission block is correctly received, and the second time-frequency resource block includes all The third time-frequency resource block; the channel sensing performed in the first time-frequency resource group is used to determine the first measurement value; when the first measurement value is greater than the target threshold, the second time-frequency resource block Is judged not to belong to the first candidate resource block set; when the first measurement value is not greater than the target threshold, the second time-frequency resource block is judged to belong to the first candidate resource block set; the target threshold It is related to whether the first information is sent in the first time-frequency resource pool; the first time-frequency resource group is associated with the second time-frequency resource block.

As an embodiment, the second node in this application includes the first communication device 410.

As an embodiment, the first node in this application includes the second communication device 450.

As an example, {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller/processor 459, the memory 460, the data At least one of the sources 467} is used to monitor the first information in this application in the first time-frequency resource pool in this application; {the antenna 420, the transmitter 418, the At least one of the transmitting processor 416, the multi-antenna transmitting processor 471, the controller/processor 475, and the memory 476} is used in the first time-frequency resource pool in this application Send the first information in this application.

As an embodiment, at least one of {the antenna 452, the receiver 454, the receiving processor 456, and the multi-antenna receiving processor 458} is used in the first The channel sensing in this application is performed in the time-frequency resource group and the first measurement value in this application is obtained.

As an embodiment, at least one of {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller/processor 459} is used for Determine whether the second time-frequency resource block in this application belongs to the first candidate resource block set in this application.

As an example, {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller/processor 459, the memory 460, the data At least one of the sources 467} is used to receive the first reference signal in this application in the first time-frequency resource group in this application.

As an embodiment, {the antenna 420, the transmitter 418, the transmission processor 416, the multi-antenna transmission processor 471, the controller/processor 475, the memory 476} One of them is used to send the first reference signal in this application in the first time-frequency resource group in this application.

As an example, {the antenna 452, the transmitter 454, the transmission processor 468, the multi-antenna transmission processor 457, the controller/processor 459, the memory 460, the data At least one of the sources 467} is used to select the M candidate resource blocks in this application from the first candidate resource block set in this application.

As an example, {the antenna 452, the transmitter 454, the transmission processor 468, the multi-antenna transmission processor 457, the controller/processor 459, the memory 460, the data At least one of the sources 467} is used to transmit the first signal in this application in the M candidate resource blocks in this application.

As an embodiment, {the antenna 420, the receiver 418, the receiving processor 470, the multi-antenna receiving processor 472, the controller/processor 475, the memory 476} at least One is used to receive the first signal in this application.

As an example, {the antenna 452, the transmitter 454, the transmission processor 468, the multi-antenna transmission processor 457, the controller/processor 459, the memory 460, the data At least one of the sources 467} is used to receive the second information in this application.

As an embodiment, {the antenna 420, the transmitter 418, the transmission processor 416, the multi-antenna transmission processor 471, the controller/processor 475, the memory 476} One is used to send the second information in this application.

As an embodiment, at least one of {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458} is used in the third Perform the channel sensing in this application in the time-frequency resource group and obtain the second measurement value in this application.

As an embodiment, at least one of {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller/processor 459} is used for Determine whether the fourth time-frequency resource block in this application belongs to the first candidate resource block set in this application.

As an example, {the antenna 452, the transmitter 454, the transmission processor 468, the multi-antenna transmission processor 457, the controller/processor 459, the memory 460, the data At least one of the sources 467} is used to receive the third information in this application.

Example 5

Embodiment 5 illustrates a flow chart of wireless transmission according to an embodiment of the present application, as shown in FIG. 5. In FIG. 5, the second node U1, the first node U2, the third node U3, and the fourth node U4 are communication nodes that are transmitted between each other through an air interface. In Fig. 5, the steps in blocks F51 to F511 are optional.

The second node U1 sends the first information in the first time-frequency resource pool in step S5101; sends the second information in step S5102; sends the first reference signal in the first time-frequency resource group in step S5103; In step S5104, the first signal is received.

The first node U2 receives the third information in step S5201; monitors the first information in the first time-frequency resource pool in step S521; and detects the first information in the first time-frequency resource pool in step S5202. A message; in step S5203, receive the second message; in step S522, perform channel sensing in the first time-frequency resource group and obtain a first measurement value; in step S523, determine whether the second time-frequency resource block belongs to the first A set of candidate resource blocks; in step S5204, the channel sensing is performed in the third time-frequency resource group and the second measurement value is obtained; in step S5205, it is determined whether the fourth time-frequency resource block belongs to the first candidate resource block Set; in step S5206, select M candidate resource blocks in the first candidate resource block set; in step S5207, send a first signal in the M candidate resource blocks.

The third node U3 sends the second information in step S5301; sends the first reference signal in the first time-frequency resource group in step S5302; and receives the first signal in step S5303.

The fourth node U4 sends the third information in step S5401.

In Embodiment 5, when the first measurement value is greater than the target threshold, the first node U2 determines that the second time-frequency resource block does not belong to the first candidate resource block set; when the first measurement When the value is not greater than the target threshold, the first node U2 determines that the second time-frequency resource block belongs to the first candidate resource block set. The first information indicates that the third time-frequency resource block is reserved for the first control information, the first control information is used to indicate whether the first transmission block is received correctly, and the second time-frequency resource block includes all The third time-frequency resource block; the target threshold is related to whether the first node U2 detects the first information in the first time-frequency resource pool; the first time-frequency resource group and the The second time-frequency resource block is associated. The second information indicates that a second time-frequency resource group is reserved; the second time-frequency resource block and the second time-frequency resource group are not orthogonal. The third time-frequency resource group belongs to the second time-frequency resource group, the fourth time-frequency resource block and the second time-frequency resource group are non-orthogonal; the third time-frequency resource block and the The fourth time-frequency resource block is orthogonal in the time-frequency domain. The third information is used by the first node U2 to determine the first time-frequency resource pool.

As an embodiment, the first node U2 is the first node in this application.

As an embodiment, the second node U1 is the second node in this application.

As an embodiment, the air interface between the second node U1 and the first node U2 is a PC5 interface.

As an embodiment, the air interface between the second node U1 and the first node U2 includes a side link (Sidelink).

As an embodiment, the air interface between the second node U1 and the first node U2 includes a wireless interface between user equipment and user equipment.

As an embodiment, the air interface between the second node U1 and the first node U2 includes a wireless interface between the user equipment and the relay node.

As an embodiment, the air interface between the third node U3 and the first node U2 is a PC5 interface.

As an embodiment, the air interface between the third node U3 and the first node U2 includes a side link (Sidelink).

As an embodiment, the air interface between the third node U3 and the first node U2 includes a wireless interface between user equipment and user equipment.

As an embodiment, the air interface between the third node U3 and the first node U2 includes a wireless interface between the user equipment and the relay node.

As an embodiment, the air interface between the first node U2 and the fourth node U4 is a Uu interface.

As an embodiment, the air interface between the first node U2 and the fourth node U4 includes a downlink (Downlink) and an uplink (Uplink).

As an embodiment, the third node U3 is user equipment.

As an embodiment, the third node U3 is a relay node.

As an embodiment, the fourth node U4 is a base station.

As an embodiment, the fourth node U4 is a relay node.

As an embodiment, the first time-frequency resource group is related to whether the first information is detected in the first time-frequency resource pool.

As an embodiment, the first node U2 detects first signaling in the first time-frequency resource pool; the first signaling carries the first information.

As an embodiment, the first signaling indicates the first time-frequency resource group; the first transmission block is transmitted in the first time-frequency resource group.

As an embodiment, the measurement for the first reference signal is used by the first node U2 to generate the first measurement value.

As an embodiment, the first candidate resource block set includes M0 candidate resource blocks, and any one of the M candidate resource blocks is one candidate resource block among the M0 candidate resource blocks.

As an embodiment, when the second measurement value is greater than a third threshold, the first node U2 determines that the fourth time-frequency resource block does not belong to the first candidate resource block set; when the second measurement When the value is not greater than the third threshold, the first node U2 determines that the fourth time-frequency resource block belongs to the first candidate resource block set.

As an example, the steps in boxes F53 and F54 in FIG. 5 cannot exist at the same time.

As an embodiment, the sender of the second information is the second node U1.

As an embodiment, the sender of the second information is the third node U3.

As an embodiment, the steps in boxes F56 and F57 in FIG. 5 cannot exist at the same time.

As an embodiment, the sender of the first reference signal is the second node U1.

As an embodiment, the sender of the first reference signal is the third node U3.

Example 6

Embodiment 6 illustrates a schematic diagram of the first time-frequency resource pool according to an embodiment of the present application; as shown in FIG. 6. In Embodiment 6, the first time-frequency resource pool includes a positive integer number of REs (Resource Elements, resource particles).

As an embodiment, one RE occupies one multi-carrier symbol in the time domain and one sub-carrier in the frequency domain.

As an embodiment, the multi-carrier symbol is an OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbol.

As an embodiment, the multi-carrier symbol is an SC-FDMA (Single Carrier-Frequency Division Multiple Access, single carrier frequency division multiple access) symbol.

As an embodiment, the multi-carrier symbol is a DFT-S-OFDM (Discrete Fourier Transform Spread OFDM, Discrete Fourier Transform Orthogonal Frequency Division Multiplexing) symbol.

As an embodiment, the first time-frequency resource pool includes a positive integer number of multi-carrier symbols in the time domain.

As an embodiment, the first time-frequency resource pool includes a positive integer number of discontinuous multi-carrier symbols in the time domain.

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

As an embodiment, the first time-frequency resource pool includes a positive integer number of discontinuous time slots in the time domain.

As an embodiment, the first time-frequency resource pool includes a positive integer number of sub-frames in the time domain.

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

As an embodiment, the first time-frequency resource pool includes a positive integer number of PRBs (Physical Resource Block) in the frequency domain.

As an embodiment, the first time-frequency resource pool includes a positive integer number of consecutive PRBs in the frequency domain.

As an embodiment, the first time-frequency resource pool includes a positive integer number of discontinuous PRBs in the frequency domain.

As an embodiment, the first time-frequency resource pool includes a positive integer number of sub-channels in the frequency domain.

As an embodiment, the first time-frequency resource pool is configured by higher layer signaling.

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

As an embodiment, the first time-frequency resource pool is pre-configured.

As an embodiment, the first time-frequency resource pool appears multiple times in the time domain.

As an embodiment, the first time-frequency resource pool only appears once in the time domain.

Example 7

Embodiment 7 illustrates a schematic diagram of a given timing frequency resource group according to an embodiment of the present application; as shown in FIG. 7. In Embodiment 7, the given time-frequency resource group is any one of the first time-frequency resource group, the second time-frequency resource group and the third time-frequency resource group in this application. Resource group.

As an embodiment, the given timing frequency resource group includes a positive integer number of REs.

As an embodiment, the given timing frequency resource group includes a positive integer number of multi-carrier symbols in the time domain.

As an embodiment, the given timing frequency resource group includes a positive integer number of discontinuous multi-carrier symbols in the time domain.

As an embodiment, the given timing frequency resource group includes a positive integer number of slots in the time domain.

As an embodiment, the given timing frequency resource group includes a positive integer number of discrete time slots (slots) in the time domain.

As an embodiment, the given timing frequency resource group includes a positive integer number of sub-frames in the time domain.

As an embodiment, the given timing frequency resource group appears multiple times in the time domain.

As a sub-embodiment of the foregoing embodiment, the interval between any two adjacent occurrences of the given timing-frequency resource group in the time domain is equal.

As an embodiment, the given timing frequency resource group only appears once in the time domain.

As an embodiment, the given timing frequency resource group includes a positive integer number of subcarriers in the frequency domain.

As an embodiment, the given timing frequency resource group includes a positive integer number of PRBs in the frequency domain.

As an embodiment, the given timing frequency resource group includes a positive integer number of sub-channels in the frequency domain.

As an embodiment, the given timing frequency resource group belongs to a sensing window (sensing window) in the time domain.

As an embodiment, the given timing-frequency resource group is the first timing-frequency resource group.

As an embodiment, the given timing-frequency resource group is the second timing-frequency resource group.

As an embodiment, the given timing-frequency resource group is the third timing-frequency resource group.

Example 8

Embodiment 8 illustrates a schematic diagram of a given resource block according to an embodiment of the present application; as shown in FIG. 8. In Embodiment 8, the given resource block is the M0 candidate resource blocks in this application, the second time-frequency resource block, the third time-frequency resource block, and the fourth time-frequency resource Any resource block in the block.

As an embodiment, the given resource block includes a positive integer number of REs.

As an embodiment, the given resource block includes a positive integer number of multi-carrier symbols in the time domain.

As an embodiment, the given resource block includes a positive integer number of time slots in the time domain.

As an embodiment, the given resource block includes one slot in the time domain.

As an embodiment, the given resource block includes a positive integer number of subframes in the time domain.

As an embodiment, the given resource block includes one subframe in the time domain.

As an embodiment, the given resource block includes a positive integer number of subcarriers in the frequency domain.

As an embodiment, the given resource block includes a positive integer number of PRBs in the frequency domain.

As an embodiment, the given resource block includes a positive integer number of consecutive PRBs in the frequency domain.

As an embodiment, the given resource block includes a positive integer number of discontinuous PRBs in the frequency domain.

As an embodiment, the given resource block includes a positive integer number of subchannels in the frequency domain.

As an embodiment, the given resource block belongs to a selection window (selection window) in the time domain.

As an embodiment, the number of REs included in two candidate resource blocks in the M0 candidate resource blocks are not equal.

As an embodiment, the number of REs included in any two candidate resource blocks in the M0 candidate resource blocks is equal.

As an embodiment, the given resource block is any one of the M0 candidate resource blocks.

As an embodiment, the given resource block is the second time-frequency resource block.

As an embodiment, the given resource block is the third time-frequency resource block.

As an embodiment, the given resource block is the fourth time-frequency resource block.

Example 9

Embodiment 9 illustrates a schematic diagram of the target threshold and whether the first information is detected in the first time-frequency resource pool according to an embodiment of the present application; as shown in FIG. 9. In Embodiment 9, when the first information is detected in the first time-frequency resource pool, the target threshold is the first threshold; when all information is not detected in the first time-frequency resource pool When the first information is described, the target threshold is a second threshold; the first threshold is not equal to the second threshold.

As an embodiment, the target threshold of the sentence is related to whether the first information is detected in the first time-frequency resource pool includes: when the first node is in the first time-frequency resource pool When the first information is detected, the target threshold is the first threshold; when the first node does not detect the first information in the first time-frequency resource pool, the target threshold is the first Two thresholds; the first threshold is not equal to the second threshold.

As an embodiment, the first threshold is lower than the second threshold.

As an embodiment, the first threshold is higher than the second threshold.

As an embodiment, the first threshold and the second threshold are respectively pre-configured.

As an embodiment, the first threshold and the second threshold are respectively configured by higher layer parameters.

As an embodiment, the first threshold and the second threshold are respectively related to the first priority set.

Example 10

Embodiment 10 illustrates a schematic diagram of the target threshold and whether the first information is detected in the first time-frequency resource pool according to an embodiment of the present application; as shown in FIG. 10. In Embodiment 10, when the first information is detected in the first time-frequency resource pool, the target threshold belongs to the first threshold set; when the first information is not detected in the first time-frequency resource pool In the case of the first information, the target threshold belongs to a second threshold set; the first threshold set and the second threshold set each include a positive integer number of thresholds.

As an embodiment, the target threshold of the sentence is related to whether the first information is detected in the first time-frequency resource pool includes: when the first node is in the first time-frequency resource pool When the first information is detected, the target threshold belongs to a first threshold set; when the first node does not detect the first information in the first time-frequency resource pool, the target threshold belongs to The second threshold value set; the first threshold value set and the second threshold value set respectively include a positive integer number of threshold values.

As an embodiment, there is a threshold in the first threshold set that does not belong to the second threshold set.

As an embodiment, there is a threshold in the second threshold set that does not belong to the first threshold set.

As an embodiment, the first threshold value set and the second threshold value set are respectively pre-configured.

As an embodiment, the first threshold value set and the second threshold value set are respectively configured by higher layer parameters.

As an embodiment, when the first information is detected in the first time-frequency resource pool, the first priority set is used to determine the target threshold from the first threshold set; when When the first information is not detected in the first time-frequency resource pool, the first priority set is used to determine the target threshold from the second threshold set.

Example 11

Embodiment 11 illustrates a schematic diagram of the association between the first time-frequency resource group and the second time-frequency resource block according to an embodiment of the present application; as shown in FIG. 11.

As an embodiment, associating the first time-frequency resource group with the second time-frequency resource block in the sentence includes: the channel sensing performed in the first time-frequency resource group is used to determine Whether the second time-frequency resource block belongs to the first candidate resource block set.

As an embodiment, associating the first time-frequency resource group with the second time-frequency resource block in the sentence includes: the first time-frequency resource group and the second time-frequency resource block are connected by the same signal. Order reserved.

As an embodiment, the association of the first time-frequency resource group and the second time-frequency resource block in the sentence includes: the first time-frequency resource group and the third time-frequency resource block in this application Reserved by the same signaling.

As an embodiment, associating the first time-frequency resource group with the second time-frequency resource block in the sentence includes: the first signaling in this application indicates that the first time-frequency resource group and the second time-frequency resource block The second time-frequency resource block.

As a sub-embodiment of the foregoing embodiment, the first signaling explicitly indicates the second time-frequency resource block.

As a sub-embodiment of the foregoing embodiment, the first signaling implicitly indicates the second time-frequency resource block.

As an embodiment, associating the first time-frequency resource group with the second time-frequency resource block in the sentence includes: the first signaling in this application indicates that the first time-frequency resource group and the local The third time-frequency resource block in the application.

As a sub-embodiment of the foregoing embodiment, the first signaling explicitly indicates the third time-frequency resource block.

As a sub-embodiment of the foregoing embodiment, the first signaling implicitly indicates the third time-frequency resource block.

As an embodiment, associating the first time-frequency resource group with the second time-frequency resource block in the sentence includes: the first transmission block in this application is included in the first time-frequency resource group transmission.

As an embodiment, associating the first time-frequency resource group with the second time-frequency resource block in the sentence includes: the first time-frequency resource group and the second time-frequency resource block both belong to this application The second time-frequency resource group in.

As an embodiment, associating the first time-frequency resource group with the second time-frequency resource block in the sentence includes: the first time-frequency resource group belongs to the second time-frequency resource group in this application , The second time-frequency resource block and the second time-frequency resource group are not orthogonal.

Example 12

Embodiment 12 illustrates a schematic diagram of the first time-frequency resource group and whether the first information is detected in the first time-frequency resource pool according to an embodiment of the present application; as shown in FIG. 12.

As an embodiment, when the first information is detected in the first time-frequency resource pool, the first time-frequency resource group does not belong to the second time-frequency resource group in this application; When the first information is not detected in the first time-frequency resource pool, the first time-frequency resource group belongs to the second time-frequency resource group.

As an embodiment, when the first information is detected in the first time-frequency resource pool, the first time-frequency resource group is reserved for K1 transmission blocks, and the first time-frequency resource group in this application The transmission block is one of the K1 transmission blocks; when the first information is not detected in the first time-frequency resource pool, the first time-frequency resource group is reserved for K2 Transmission block, any one of the K1 transmission blocks is different from any one of the K2 transmission blocks; K1 and K2 are respectively positive integers.

As a sub-embodiment of the foregoing embodiment, the transport block size (Transport Block Size) of any transport block in the K1 transport blocks is not equal to the transport block size of any transport block in the K2 transport blocks.

As an embodiment, when the first information is detected in the first time-frequency resource pool, the first time-frequency resource group is indicated by the first signaling in this application; When the first information is not detected in a time-frequency resource pool, the first time-frequency resource group is indicated by another signaling different from the first signaling.

As an embodiment, when the first information is detected in the first time-frequency resource pool, the first time-frequency resource group includes the time-frequency resource occupied by the first transmission block.

As an embodiment, when the first information is detected in the first time-frequency resource pool, the first time-frequency resource group is composed of time-frequency resources occupied by the first transmission block.

As an embodiment, when the first information is detected in the first time-frequency resource pool, the first time-frequency resource group is reserved by a given node; when in the first time-frequency resource pool When the first information is not detected in, the first time-frequency resource group is reserved by another node different from the given node.

Example 13

Embodiment 13 illustrates a schematic diagram of first signaling and first information according to an embodiment of the present application; as shown in FIG. 13. In Embodiment 13, the first node in this application detects the first signaling in the first time-frequency resource pool in this application, and the first signaling carries the first information .

As an embodiment, the phrase detecting the first information includes: detecting the first signaling.

As an embodiment, the phrase detecting the first information includes: detecting a given signaling, and the given signaling carries the first information.

As an embodiment, the phrase detecting the first signaling refers to: performing coherent reception in the first time-frequency resource pool, and the energy of the signal obtained after the coherent reception is greater than a first given threshold.

As an embodiment, the phrase detecting the first signaling means: receiving a signal in the first time-frequency resource pool and performing a decoding operation, and determining that the decoding is correct according to the CRC bit.

As an embodiment, the first signaling is unicast (Unicast) transmission.

As an embodiment, the first signaling is transmitted by multicast (Groupcast).

As an embodiment, the first signaling is user equipment specific (UE-specific).

As an embodiment, the first signaling is dynamic signaling.

As an embodiment, the first signaling is layer 1 (L1) signaling.

As an embodiment, the first signaling is layer 1 (L1) control signaling.

As an embodiment, the first signaling includes SCI.

As an embodiment, the first signaling includes one or more fields in an SCI.

As an embodiment, the first signaling is transmitted on a side link (SideLink).

As an embodiment, the first signaling is transmitted through the PC5 interface.

As an embodiment, the first information carried in the first signaling of the sentence includes: the first signaling explicitly indicates the first information.

As an embodiment, the first information carried in the first signaling of the sentence includes: the first signaling implicitly indicates the first information.

As an embodiment, the first signaling indicates the third time-frequency resource block in this application.

As an embodiment, the first signaling explicitly indicates the third time-frequency resource block in this application.

As an embodiment, the first signaling implicitly indicates the third time-frequency resource block in this application.

As an embodiment, the time domain resource occupied by the third time-frequency resource block in this application is related to the time domain resource occupied by the first signaling.

As an embodiment, the time domain resource occupied by the first signaling is used to determine the time domain resource occupied by the third time-frequency resource block in this application.

As an embodiment, the time interval between the time domain resource occupied by the first signaling and the time domain resource occupied by the third time-frequency resource block in this application is pre-configured.

As an embodiment, the time interval between the time domain resource occupied by the first signaling and the time domain resource occupied by the third time-frequency resource block in this application is configured by higher layer signaling.

As an embodiment, the frequency domain resource occupied by the third time-frequency resource block in this application is related to the frequency domain resource occupied by the first signaling.

As an embodiment, the frequency domain resource occupied by the first signaling is used to determine the frequency domain resource occupied by the third time-frequency resource block in this application.

As an embodiment, the first signaling indicates a first index, and the first index is used to determine the third time-frequency resource block in this application.

As a sub-embodiment of the foregoing embodiment, the first index includes a HARQ process number (process number).

As a sub-embodiment of the foregoing embodiment, the first index includes a layer 1 (L1) destination IDentity.

As a sub-embodiment of the foregoing embodiment, the first index includes a layer 1 (L1) source identification (Source ID).

As a sub-embodiment of the foregoing embodiment, the first index includes an identifier of the target receiver of the first transmission block.

As a sub-embodiment of the foregoing embodiment, the first index includes an identifier of the sender of the first transmission block.

As an embodiment, the first signaling includes configuration information of a first data channel, the first transmission block is transmitted on the first data channel, and the configuration information of the first data channel includes { Occupied time domain resources, occupied frequency domain resources, MCS (Modulation and Coding Scheme), DMRS (DeModulation Reference Signals, demodulation reference signal) configuration information, HARQ process number (process number), RV( One or more of Redundancy Version, NDI (New Data Indicator, New Data Indicator)}.

As a sub-embodiment of the foregoing embodiment, the first data channel is PSSCH.

As a sub-embodiment of the foregoing embodiment, the first data channel is PUSCH (Physical Uplink Shared CHannel, Physical Uplink Shared Channel).

As an embodiment, the first signaling is transmitted on PUCCH.

As an embodiment, the first signaling is transmitted on the PSCCH.

Example 14

Embodiment 14 illustrates a schematic diagram of the first signaling indicating the first time-frequency resource group according to an embodiment of the present application; as shown in FIG. 14.

As an embodiment, the first signaling explicitly indicates the first time-frequency resource group.

As an embodiment, the first signaling implicitly indicates the first time-frequency resource group.

As an embodiment, the first signaling indicates that the first time-frequency resource group is reserved.

As an embodiment, the first time-frequency resource group is reserved for K transmission blocks, and K is a positive integer; the first transmission block is one of the K transmission blocks.

As an embodiment, the time-frequency resource occupied by the first signaling belongs to the first time-frequency resource group.

As an embodiment, the time-frequency resource occupied by the first signaling does not belong to the first time-frequency resource group.

Example 15

Embodiment 15 illustrates a schematic diagram of the first reference signal according to an embodiment of the present application; as shown in FIG. 15. In Embodiment 15, the first reference signal is transmitted in the first time-frequency resource group, and measurement on the first reference signal is used to generate the first measurement value.

As an embodiment, the first reference signal includes SL (SideLink, subcarrier) RS (Reference Signal, reference signal).

As an embodiment, the first reference signal includes CSI-RS (Channel-State Information Reference Signals, channel state information reference signal).

As an embodiment, the first reference signal includes SL CSI-RS.

As an embodiment, the first reference signal includes SRS (Sounding Reference Signal, sounding reference signal).

As an embodiment, the first reference signal includes SL SRS.

As an embodiment, the first reference signal includes DMRS.

As an embodiment, the first reference signal includes SL DMRS.

As an embodiment, the first reference signal is transmitted on a side link (SideLink).

As an embodiment, the first reference signal is transmitted through the PC5 interface.

As an embodiment, the first reference signal only occupies a part of REs in the first time-frequency resource group.

As an embodiment, the first reference signal occupies all REs in the first time-frequency resource group.

As an embodiment, the first reference signal includes the DMRS of the first control channel.

As a sub-embodiment of the foregoing embodiment, the first control channel carries the first signaling.

As a sub-embodiment of the foregoing embodiment, the first control channel carries the second information.

As a sub-embodiment of the foregoing embodiment, the first control channel is PSCCH.

As an embodiment, the first reference signal includes the DMRS of the second data channel.

As a sub-embodiment of the foregoing embodiment, the first signaling includes configuration information of the second data channel.

As a sub-embodiment of the foregoing embodiment, the second information includes configuration information of the second data channel.

As a sub-embodiment of the foregoing embodiment, the first transmission block is transmitted on the second data channel.

As a sub-embodiment of the foregoing embodiment, the second data channel is transmitted on the first time-frequency resource group.

As a sub-embodiment of the foregoing embodiment, the second data channel is transmitted on the second time-frequency resource group.

As a sub-embodiment of the foregoing embodiment, the second data channel is PSSCH.

As an embodiment, the first information is detected in the first time-frequency resource pool, and the sender of the first reference signal is the sender of the first information.

As an embodiment, the first information is detected in the first time-frequency resource pool, and the sender of the first reference signal is not the sender of the first information.

As an embodiment, the channel sensing includes: receiving the first reference signal, and measuring the average received power of the first reference signal.

As an embodiment, the channel sensing includes: performing coherent reception on the first reference signal, and measuring the average received power of the signal obtained after the coherent reception.

As an embodiment, the first measurement value includes the RSRP of the first reference signal.

As an embodiment, the first measurement value includes the RSRQ of the first reference signal.

As an embodiment, the first measurement value includes the RSSI of the first reference signal.

Example 16

Embodiment 16 illustrates a schematic diagram of a first candidate resource block set and M candidate resource blocks according to an embodiment of the present application; as shown in FIG. 16. In Embodiment 16, the first node selects the M candidate resource blocks in the first candidate resource block set, and sends the first signal in the M candidate resource blocks. The first candidate resource block set includes M0 candidate resource blocks, and any one candidate resource block among the M candidate resource blocks is one candidate resource block among the M0 candidate resource blocks. In Fig. 16, the indexes of the M0 candidate resource blocks are #0, ..., #M0-1, respectively.

As an example, the M is equal to 1.

As an embodiment, the M is greater than 1.

As an example, the M0 is equal to 1.

As an embodiment, the M0 is greater than 1.

As an embodiment, the first node independently selects the M candidate resource blocks in the first candidate resource block set.

As an embodiment, the first node randomly selects the M candidate resource blocks from the first candidate resource block set.

As an embodiment, the M0 candidate resource blocks correspond to M0 measured quantities in a one-to-one correspondence, and the M candidate resource blocks are composed of M candidate resource blocks corresponding to the lowest measured quantity in the first candidate resource block set. .

As an embodiment, the first node randomly selects the M candidate resource blocks in the first subset of candidate resource blocks; the M0 candidate resource blocks correspond to M0 measured quantities in a one-to-one correspondence, and the first candidate resource The block subset is composed of M1 candidate resource blocks corresponding to the lowest measurement amount in the first candidate resource block set; M1 is a positive integer smaller than the M0 and not smaller than the M.

As an embodiment, the M0 measurement quantities are RSSI respectively.

As an embodiment, the M0 measurement quantities are RSRP respectively.

As an embodiment, the first signal is a wireless signal.

As an embodiment, the first signal is a baseband signal.

As an embodiment, the first signal carries one TB.

As an embodiment, the first signal carries CSI (Channel-State Information, channel state information).

As an embodiment, the first signal is transmitted on a side link (SideLink).

As an embodiment, the first signal is transmitted through the PC5 interface.

As an embodiment, the first signal is transmitted on PUSCH.

As an embodiment, the first signal is transmitted on the PSSCH.

Example 17

Embodiment 17 illustrates a schematic diagram of the second information and the second time-frequency resource group according to an embodiment of the present application; as shown in FIG. 17. In Embodiment 17, the second information indicates that the second time-frequency resource group is reserved; the second time-frequency resource block and the second time-frequency resource group are not orthogonal.

As an embodiment, the second information is dynamic information.

As an embodiment, the second information is layer 1 (L1) information.

As an embodiment, the second information is layer 1 (L1) control information.

As an embodiment, the second information is carried by physical layer signaling.

As an embodiment, the second information is carried by layer 1 (L1) signaling.

As an embodiment, the second information is carried by layer 1 (L1) control signaling.

As an embodiment, the second information includes SCI.

As an embodiment, the second information includes one or more fields in an SCI.

As an embodiment, the second information includes information carried by one or more fields in an SCI.

As an embodiment, the second information is transmitted on the side link (SideLink).

As an embodiment, the second information is transmitted through the PC5 interface.

As an embodiment, the first signaling carries the second information.

As an embodiment, the second information is carried by signaling different from the first signaling.

As an embodiment, the sender of the second information is different from the sender of the first information.

As an embodiment, the sender of the second information is the sender of the first information.

As an embodiment, the second information and the first information are respectively carried by different signaling, and the second information is earlier than the first information.

As an embodiment, the second information and the first information are respectively carried by different signaling, and the second information is later than the first information.

As an embodiment, that the second time-frequency resource group of the sentence is reserved includes: the sender of the second information does not need to perform the channel sensing before sending a wireless signal in the second time-frequency resource group.

As an embodiment, the second time-frequency resource group is reserved for K3 transmission blocks, K3 is a positive integer; and the first transmission block is one transmission block among the K3 transmission blocks.

As an embodiment, the second time-frequency resource group is reserved for K3 transmission blocks, and K3 is a positive integer; the first transmission block is not one of the K3 transmission blocks.

As an embodiment, the second time-frequency resource block belongs to the second time-frequency resource group.

As an embodiment, the second time-frequency resource block and the second time-frequency resource group partially overlap.

As an embodiment, the second time-frequency resource block and the second time-frequency resource group overlap.

As an embodiment, the second information is transmitted on PUCCH.

As an embodiment, the second information is transmitted on the PSCCH.

As an embodiment, the first time-frequency resource group belongs to the second time-frequency resource group.

As an embodiment, the first information is not detected in the first time-frequency resource pool, and the first time-frequency resource group belongs to the second time-frequency resource group.

As an embodiment, the second time-frequency resource group appears multiple times in the time domain, and the first time-frequency resource group includes one occurrence of the second time-frequency resource group in the time domain.

As an embodiment, the first time-frequency resource group does not belong to the second time-frequency resource group.

As an embodiment, the first information is detected in the first time-frequency resource pool, and the first time-frequency resource group does not belong to the second time-frequency resource group.

As an embodiment, the first information is detected in the first time-frequency resource pool, and the first time-frequency resource group belongs to the second time-frequency resource group.

Example 18

Embodiment 18 illustrates a schematic diagram of the third time-frequency resource group, the fourth time-frequency resource block, and the third time-frequency resource block according to an embodiment of the present application; as shown in FIG. 18. In Embodiment 18, the first node performs the channel sensing in the third time-frequency resource group and obtains the second measurement value; the second measurement value is used to determine the fourth time Whether the frequency resource block belongs to the first candidate resource block set. The third time-frequency resource group belongs to the second time-frequency resource group, the fourth time-frequency resource block and the second time-frequency resource group are non-orthogonal; the third time-frequency resource block and the The fourth time-frequency resource block is orthogonal in the time-frequency domain.

As an embodiment, the second measurement value includes RSRP.

As an embodiment, the second measurement value includes RSRQ.

As an embodiment, the second measurement value includes RSSI.

As an embodiment, the unit of the second measurement value is Watt.

As an embodiment, the unit of the third threshold is watts.

As an embodiment, the unit of the second measurement value is dBm (millidecibels).

As an embodiment, the unit of the third threshold is dBm.

As an embodiment, the third threshold is independent of whether the first information is detected in the first time-frequency resource pool.

As an embodiment, the third time-frequency resource group is the second time-frequency resource group.

As an embodiment, the third time-frequency resource group and the second time-frequency resource group completely overlap.

As an embodiment, the third time-frequency resource group and the second time-frequency resource group partially overlap.

As an embodiment, the third time-frequency resource group and the second time-frequency resource group completely overlap in the frequency domain and partially overlap in the time domain.

As an embodiment, the fourth time-frequency resource block belongs to the second time-frequency resource group.

As an embodiment, the fourth time-frequency resource block and the second time-frequency resource group overlap.

As an embodiment, the fourth time-frequency resource block and the second time-frequency resource group partially overlap.

As an embodiment, the fourth time-frequency resource block and the third time-frequency resource block belong to the same time slot in the time domain.

As an embodiment, the fourth time-frequency resource block and the third time-frequency resource block belong to the same subframe in the time domain.

As an embodiment, the fourth time-frequency resource block and the third time-frequency resource group are orthogonal in the time domain.

As an embodiment, the fourth time-frequency resource block is later than the third time-frequency resource group in the time domain.

As an embodiment, the fourth time-frequency resource block is earlier than the third time-frequency resource block in the time domain.

As an embodiment, the end time of the fourth time-frequency resource block is no later than the start time of the third time-frequency resource block.

As an embodiment, the frequency domain resources occupied by the fourth time-frequency resource block and the third time-frequency resource block are orthogonal.

As an embodiment, the frequency domain resources occupied by the fourth time-frequency resource block and the third time-frequency resource block overlap.

As an embodiment, the frequency domain resources occupied by the fourth time-frequency resource block include frequency domain resources occupied by the third time-frequency resource block.

As an embodiment, the fourth time-frequency resource block and the second time-frequency resource block are orthogonal in the time domain.

As an embodiment, the fourth time-frequency resource block is earlier than the second time-frequency resource block in the time domain.

As an embodiment, the fourth time-frequency resource block does not include PSFCH.

As an embodiment, the first information is detected in the first time-frequency resource pool; the target threshold is less than the third threshold.

As an embodiment, the first information is detected in the first time-frequency resource pool, and the fourth time-frequency resource block does not include a PSFCH; the target threshold is less than the third threshold.

As an embodiment, the target threshold is equal to the third threshold.

As an embodiment, when the first information is detected in the first time-frequency resource pool, the second time-frequency resource block only includes the third time-frequency resource block and the fourth time-frequency resource block The third time-frequency resource block in a resource block; when the first information is not detected in the first time-frequency resource pool, the second time-frequency resource block includes the third time-frequency resource Block and the fourth time-frequency resource block.

Example 19

Embodiment 19 illustrates a schematic diagram of the third time-frequency resource group, the fourth time-frequency resource block, and the third time-frequency resource block according to an embodiment of the present application; as shown in FIG. 19.

As an embodiment, the third time-frequency resource block and the fourth time-frequency resource block are non-orthogonal in the time domain.

As an embodiment, the time domain resources occupied by the third time-frequency resource block and the fourth time-frequency resource block overlap.

As an embodiment, the fourth time-frequency resource block and the second time-frequency resource block are non-orthogonal in the time domain.

As an embodiment, the time domain resources occupied by the fourth time-frequency resource block and the second time-frequency resource block overlap.

Example 20

Embodiment 20 illustrates a schematic diagram of the third information according to an embodiment of the present application; as shown in FIG. 20. In Embodiment 20, the third information is used to determine the first time-frequency resource pool.

As an embodiment, the third information is indicated by a higher layer parameter.

As an embodiment, the third information is carried by higher layer signaling.

As an embodiment, the third information is carried by RRC signaling.

As an embodiment, the third information is transmitted on PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel).

As an embodiment, the third information is transmitted on PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel).

As an embodiment, the third information is transmitted on the PSSCH.

As an embodiment, the third information is transmitted on the PSCCH.

As an embodiment, the third information indicates the first time-frequency resource pool.

As an embodiment, the third information explicitly indicates the first time-frequency resource pool.

As an embodiment, the third information implicitly indicates the first time-frequency resource pool.

As an embodiment, the third information indicates time domain resources occupied by the first time-frequency resource pool.

As an embodiment, the third information indicates frequency domain resources occupied by the first time-frequency resource pool.

Example 21

Embodiment 21 illustrates a structural block diagram of a processing apparatus used in a first node device according to an embodiment of the present application; as shown in FIG. 21. In FIG. 21, the processing device 2100 in the first node device includes a first receiver 2101 and a first processor 2102.

In Embodiment 21, the first receiver 2101 monitors the first information in the first time-frequency resource pool, performs channel sensing in the first time-frequency resource group, and obtains the first measurement value; the first processor 2102 is When the first measurement value is greater than the target threshold, it is determined that the second time-frequency resource block does not belong to the first candidate resource block set, and when the first measurement value is not greater than the target threshold, it is determined that the second time-frequency resource block belongs to The first set of candidate resource blocks.

In Embodiment 21, the first information indicates that the third time-frequency resource block is reserved for the first control information, the first control information is used to indicate whether the first transmission block is correctly received, and the second The time-frequency resource block includes the third time-frequency resource block; the target threshold is related to whether the first information is detected in the first time-frequency resource pool; the first time-frequency resource group and the The second time-frequency resource block is associated.

As an embodiment, the first receiver 2101 detects first signaling in the first time-frequency resource pool; wherein, the first receiver 2101 detects the first signaling in the first time-frequency resource pool The first information, the first signaling carries the first information.

As an embodiment, a first reference signal is transmitted in the first time-frequency resource group; measurement on the first reference signal is used to generate the first measurement value.

As an embodiment, the first processor 2102 selects M candidate resource blocks in the first candidate resource block set, and sends a first signal in the M candidate resource blocks; where M is a positive integer; The first candidate resource block set includes M0 candidate resource blocks, and any one of the M candidate resource blocks is one candidate resource block among the M0 candidate resource blocks; M0 is not less than the Positive integer of M.

As an embodiment, the first receiver 2101 receives second information; wherein, the second information indicates that a second time-frequency resource group is reserved; the second time-frequency resource block and the second time-frequency resource block Resource groups are not orthogonal.

As an embodiment, the first receiver 2101 performs the channel sensing in the third time-frequency resource group and obtains the second measurement value; the first processor 2102 when the second measurement value is greater than the third threshold When the fourth time-frequency resource block does not belong to the first candidate resource block set, and when the second measurement value is not greater than the third threshold, it is determined that the fourth time-frequency resource block belongs to the first A set of candidate resource blocks; wherein, the first receiver 2101 detects the first information in the first time-frequency resource pool; the third time-frequency resource group belongs to the second time-frequency resource group, The fourth time-frequency resource block and the second time-frequency resource group are non-orthogonal; the third time-frequency resource block and the fourth time-frequency resource block are orthogonal in the time-frequency domain.

As an embodiment, the first receiver 2101 receives third information; wherein, the third information is used to determine the first time-frequency resource pool.

As an embodiment, the first node device is user equipment.

As an embodiment, the first node device is a relay node.

As an embodiment, the first receiver 2101 includes {antenna 452, receiver 454, receiving processor 456, multi-antenna receiving processor 458, controller/processor 459, memory 460, data source in embodiment 4 At least one of 467}.

As an embodiment, the first processor 2102 includes {antenna 452, transmitter 454, transmission processor 468, multi-antenna transmission processor 457, controller/processor 459, memory 460, data source in the fourth embodiment At least one of 467}.

Example 22

Embodiment 22 illustrates a structural block diagram of a processing apparatus used in a second node device according to an embodiment of the present application; as shown in FIG. 22. In FIG. 22, the processing device 2200 in the second node device includes a second processor 2201.

In Embodiment 22, the second processor 2201 sends the first information in the first time-frequency resource pool, or abandons sending the first information in the first time-frequency resource pool.

In Embodiment 22, the first information indicates that the third time-frequency resource block is reserved for the first control information, and the first control information is used to indicate whether the first transmission block is correctly received, and the second time-frequency resource block is The resource block includes the third time-frequency resource block; the channel sensing performed in the first time-frequency resource group is used to determine the first measurement value; when the first measurement value is greater than the target threshold, the second The time-frequency resource block is judged not to belong to the first candidate resource block set; when the first measurement value is not greater than the target threshold, the second time-frequency resource block is judged to belong to the first candidate resource block set; The target threshold is related to whether the first information is sent in the first time-frequency resource pool; the first time-frequency resource group is associated with the second time-frequency resource block.

As an embodiment, the first time-frequency resource group is related to whether to send the first information in the first time-frequency resource pool.

As an embodiment, the second processor 2201 sends first signaling in the first time-frequency resource pool; wherein, the second processor 2201 sends the first signaling in the first time-frequency resource pool First information, the first signaling carries the first information.

As an embodiment, the second processor 2201 sends a first reference signal in the first time-frequency resource group; wherein the measurement on the first reference signal is used to generate the first measurement value.

As an embodiment, the second processor 2201 sends second information; wherein, the second information indicates that a second time-frequency resource group is reserved; the second time-frequency resource block and the second time-frequency resource block Resource groups are not orthogonal.

As an embodiment, the second node device is user equipment.

As an embodiment, the second node device is a relay node.

As an embodiment, the second processor 2201 includes {antenna 420, transmitter 418, transmission processor 416, multi-antenna transmission processor 471, controller/processor 475, memory 476} in embodiment 4 At least one.

Those of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by a program instructing relevant hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk, or an optical disk. Optionally, all or part of the steps in the foregoing embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above-mentioned embodiment can be realized in the form of hardware or software function module, and this application is not limited to the combination of software and hardware in any specific form. The user equipment, terminal and UE in this application include, but are not limited to, drones, communication modules on drones, remote control aircraft, aircraft, small aircraft, mobile phones, tablets, notebooks, vehicle-mounted communication devices, wireless sensors, network cards, Internet of Things terminals, RFID terminals, NB-IOT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, internet cards, in-vehicle communication equipment, low-cost mobile phones, low-cost Cost of wireless communication equipment such as tablets. The base station or system equipment in this application includes, but is not limited to, macro cell base station, micro cell base station, home base station, relay base station, gNB (NR node B), NR node B, TRP (Transmitter Receiver Point), etc. wireless communication equipment.

The above are only the preferred embodiments of the present application, and are not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

A first node device used for wireless communication, characterized in that it comprises:

The first receiver monitors the first information in the first time-frequency resource pool, performs channel sensing in the first time-frequency resource group, and obtains the first measurement value;

The first processor, when the first measured value is greater than the target threshold, judges that the second time-frequency resource block does not belong to the first candidate resource block set; when the first measured value is not greater than the target threshold, judges all The second time-frequency resource block belongs to the first candidate resource block set;

The first information indicates that the third time-frequency resource block is reserved for the first control information, and the first control information is used to indicate whether the first transmission block is correctly received, and the second time-frequency resource block Including the third time-frequency resource block; the target threshold is related to whether the first information is detected in the first time-frequency resource pool; the first time-frequency resource group and the second time-frequency resource group The resource block is associated.
The first node device according to claim 1, wherein the first time-frequency resource group is related to whether the first information is detected in the first time-frequency resource pool.
The first node device according to claim 1 or 2, wherein the first receiver detects first signaling in the first time-frequency resource pool; wherein, the first receiver is The first information is detected in the first time-frequency resource pool, and the first signaling carries the first information.
The first node device according to claim 3, wherein the first signaling indicates the first time-frequency resource group; the first transmission block is transmitted in the first time-frequency resource group .
The first node device according to any one of claims 1 to 4, wherein the first reference signal is transmitted in the first time-frequency resource group; the measurement of the first reference signal is Used to generate the first measurement value.
The first node device according to any one of claims 1 to 5, wherein the first processor selects M candidate resource blocks from the first candidate resource block set, and performs The first signal is sent in M candidate resource blocks; where M is a positive integer; the first candidate resource block set includes M0 candidate resource blocks, and any one of the M candidate resource blocks is the M0 One of the candidate resource blocks; M0 is a positive integer not less than the M.
The first node device according to any one of claims 1 to 6, wherein the first receiver receives second information; wherein the second information indicates that the second time-frequency resource group is pre-set Leave; the second time-frequency resource block and the second time-frequency resource group are not orthogonal.
The first node device according to claim 7, wherein the first receiver performs the channel sensing in a third time-frequency resource group and obtains a second measurement value; the first processor is When the second measurement value is greater than the third threshold, it is determined that the fourth time-frequency resource block does not belong to the first candidate resource block set; when the second measurement value is not greater than the third threshold, it is determined that the fourth The time-frequency resource block belongs to the first candidate resource block set; wherein the first information is detected in the first time-frequency resource pool; the third time-frequency resource group belongs to the second time-frequency resource Group, the fourth time-frequency resource block and the second time-frequency resource group are non-orthogonal; the third time-frequency resource block and the fourth time-frequency resource block are orthogonal in the time-frequency domain.
The first node device according to any one of claims 1 to 8, wherein the first receiver receives third information; wherein, the third information is used to determine the first time Frequency resource pool.
A second node device used for wireless communication, characterized in that it comprises:

A second processor, sending the first information in the first time-frequency resource pool, or giving up sending the first information in the first time-frequency resource pool;

Wherein, the first information indicates that the third time-frequency resource block is reserved for the first control information, the first control information is used to indicate whether the first transmission block is correctly received, and the second time-frequency resource block includes all The third time-frequency resource block; the channel sensing performed in the first time-frequency resource group is used to determine the first measurement value; when the first measurement value is greater than the target threshold, the second time-frequency resource block Is judged not to belong to the first candidate resource block set; when the first measurement value is not greater than the target threshold, the second time-frequency resource block is judged to belong to the first candidate resource block set; the target threshold It is related to whether the first information is sent in the first time-frequency resource pool; the first time-frequency resource group is associated with the second time-frequency resource block.
A method used in a first node of wireless communication, characterized in that it comprises:

Monitor the first information in the first time-frequency resource pool;

Perform channel sensing in the first time-frequency resource group, and obtain a first measurement value;

When the first measurement value is greater than the target threshold, it is determined that the second time-frequency resource block does not belong to the first candidate resource block set; when the first measurement value is not greater than the target threshold, it is determined that the second time-frequency resource block The resource block belongs to the first candidate resource block set;

The first information indicates that the third time-frequency resource block is reserved for the first control information, and the first control information is used to indicate whether the first transmission block is correctly received, and the second time-frequency resource block Including the third time-frequency resource block; the target threshold is related to whether the first information is detected in the first time-frequency resource pool; the first time-frequency resource group and the second time-frequency resource group The resource block is associated.
A method used in a second node of wireless communication, characterized in that it comprises:

Sending the first information in the first time-frequency resource pool, or giving up sending the first information in the first time-frequency resource pool;

Wherein, the first information indicates that the third time-frequency resource block is reserved for the first control information, the first control information is used to indicate whether the first transmission block is correctly received, and the second time-frequency resource block includes all The third time-frequency resource block; the channel sensing performed in the first time-frequency resource group is used to determine the first measurement value; when the first measurement value is greater than the target threshold, the second time-frequency resource block Is judged not to belong to the first candidate resource block set; when the first measurement value is not greater than the target threshold, the second time-frequency resource block is judged to belong to the first candidate resource block set; the target threshold It is related to whether the first information is sent in the first time-frequency resource pool; the first time-frequency resource group is associated with the second time-frequency resource block.