CN110662306B

CN110662306B - Method and device used in user equipment and base station for wireless communication

Info

Publication number: CN110662306B
Application number: CN201810698513.2A
Authority: CN
Inventors: 张晓博; 蒋琦; 杨林
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2018-06-29
Filing date: 2018-06-29
Publication date: 2021-06-25
Anticipated expiration: 2038-06-29
Also published as: CN110662306A

Abstract

The application discloses a method and a device in a user equipment, a base station and the like used for wireless communication. Receiving a first signaling and a second signaling; the first signaling is used for indicating monitoring, and the second signaling is used for indicating not monitoring; judging whether to monitor according to the first signaling and the second signaling; and if the monitoring is judged, the first wireless signal is transmitted on the first time-frequency resource, and if the monitoring is judged, the wireless transmission on the first time-frequency resource is abandoned and the first monitoring is executed. The method and the device improve scheduling flexibility and reduce transmission delay.

Description

Method and device used in user equipment and base station for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and in particular, to a method and apparatus for supporting LBT (Listen Before Talk) communication.

Background

In the future, the application scenes of the wireless communication system are more and more diversified, and different application scenes put different performance requirements on the system. In order to meet different performance requirements of various application scenarios, a research Project of Access to Unlicensed Spectrum (Unlicensed Spectrum) under NR (New Radio) on 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #75 omnisessions.

In the LAA (licensed Assisted Access) of LTE (Long Term Evolution), a transmitter (base station or user equipment) needs to perform LBT (Listen Before Talk) Before transmitting data on an unlicensed spectrum to ensure that no interference is caused to other ongoing radio transmissions on the unlicensed spectrum. In the Cat 4LBT (LBT of the fourth type, see 3GPP TR36.889), the transmitter performs backoff (backoff) after a certain delay period (Defer Duration), the backoff time is counted by using CCA (Clear Channel Assessment) time slot period as a unit, and the number of backoff time slot periods is obtained by the transmitter randomly selecting in CWS (collision Window Size). For downlink transmission, the CWS is adjusted according to HARQ (Hybrid Automatic Repeat reQuest) feedback corresponding to data in a reference subframe (reference sub-frame) transmitted before on the unlicensed spectrum. For uplink transmission, the CWS is adjusted according to whether new data is included in data in a previous reference subframe on the unlicensed spectrum.

Over #93 conferences in 3GPP RAN1 (radio access network first working group), the following consensus is reached for NR LAA:

in a gNB (next generation base station) COT (Channel occupancy Time), for a Time interval from downlink to uplink or from uplink to downlink of less than 16us (micro seconds), LBT-free (no-LBT) may be applied in LAA communication.

Disclosure of Invention

The above-mentioned common knowledge of NR LAA utilizes the space resource occupied by the wireless signal transmitted by the target transmitter, and the target receiver can directly switch to the transmission state without performing LBT. The inventor finds out through research that: it is a feasible scheme for the base station to indicate whether to perform LBT through downlink signaling. The inventor finds out through further research that: if two downlink signaling detected by a UE (User Equipment) indicate LBT and no LBT respectively and time domain resources scheduled by the two downlink signaling overlap, whether the UE performs LBT is a problem to be solved.

In response to the above findings, the present application discloses a solution. It should be noted that the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict. Further, although the original purpose of the present application is directed to LAA communications, the methods and apparatus of the present application are also applicable to communications over licensed spectrum, such as D2D (Device to Device), and the like.

The application discloses a method used in a user equipment for wireless communication, which is characterized by comprising the following steps:

receiving a first signaling and a second signaling; the first signaling is used for indicating monitoring, and the second signaling is used for indicating not monitoring;

judging whether to monitor according to the first signaling and the second signaling; and if the monitoring is judged, the first wireless signal is transmitted on the first time-frequency resource, and if the monitoring is judged, the wireless transmission on the first time-frequency resource is abandoned and the first monitoring is executed.

As an embodiment, the method can utilize two signaling configurations to determine whether to monitor, thereby improving the configuration flexibility and reducing the delay.

Specifically, according to an aspect of the present application, the method is characterized by comprising the following steps:

judging monitoring, judging that a channel is idle in the first monitoring, and sending a second wireless signal in a second time-frequency resource; or, judging monitoring and abandoning wireless transmission in a second time-frequency resource when the channel is judged not to be idle in the first monitoring; and judging not to monitor, and sending a second wireless signal in a second time-frequency resource.

As an embodiment, if monitoring is determined and the channel is determined to be idle in the first monitoring, transmitting a second wireless signal in a second time-frequency resource; if monitoring is judged and the channel is judged not to be idle in the first monitoring, wireless transmission in a second time-frequency resource is abandoned; and if the monitoring is not judged, sending a second wireless signal in the second time frequency resource.

Specifically, according to an aspect of the present application, the first signaling is used to indicate a third time-frequency resource, and the second signaling is used to indicate a fourth time-frequency resource; and the resource occupied by the third time-frequency resource in the time domain is overlapped with the resource occupied by the fourth time-frequency resource in the time domain.

As one embodiment, the first signaling includes scheduling information for the third time-frequency resource.

As one embodiment, the first signaling includes scheduling information for the fourth time-frequency resource.

As an embodiment, the scheduling information includes occupied frequency domain resources, MCS (Modulation and Coding Status), RV (Redundancy Version), and HARQ (Hybrid Automatic Repeat reQuest) Process Number (Process Number).

As one embodiment, the scheduling information includes an NDI (New Data Indicator).

As an embodiment, the scheduling information includes occupied time domain resources.

As an embodiment, the third time-frequency resource and the fourth time-frequency resource respectively include a positive integer number of subcarriers in a frequency domain, and there is no subcarrier belonging to both the third time-frequency resource and the fourth time-frequency resource.

As an embodiment, there is no frequency value belonging to both the third time-frequency resource and the fourth time-frequency resource.

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

As an embodiment, the same carrier is deployed in the unlicensed spectrum.

As an embodiment, the third time-frequency resource and the fourth time-frequency resource belong to the same BWP (BandWidth Part) in the frequency domain.

As an embodiment, the same BWP is deployed in unlicensed spectrum.

Specifically, according to an aspect of the present application, it is characterized in that a start time of the third time-frequency resource in the time domain is after a start time of the fourth time-frequency resource in the time domain, or the start time of the third time-frequency resource in the time domain is the start time of the fourth time-frequency resource in the time domain.

As an embodiment, the starting time of the third time-frequency resource in the time domain is after the starting time of the fourth time-frequency resource in the time domain.

As an embodiment, the time-off instant of the third time-frequency resource in the time domain is after the time-off instant of the fourth time-frequency resource in the time domain.

As an embodiment, the starting time of the third time-frequency resource in the time domain is the starting time of the fourth time-frequency resource in the time domain.

As an embodiment, the first time-frequency resource belongs to the fourth time-frequency resource, and the first time-frequency resource does not belong to the third time-frequency resource.

As a sub-embodiment of the foregoing embodiment, a time domain resource occupied by the first time-frequency resource is not overlapped with a time domain resource occupied by the third time-frequency resource.

As a sub-implementation of the foregoing embodiment, the starting time of the first time-frequency resource is the starting time of the fourth time-frequency resource.

As an embodiment, the first time-frequency resource belongs to the third time-frequency resource, and the first time-frequency resource does not belong to the fourth time-frequency resource.

As a sub-embodiment of the foregoing embodiment, a time domain resource occupied by the first time frequency resource and a time domain resource occupied by the fourth time frequency resource do not overlap.

As a sub-implementation of the foregoing embodiment, the starting time of the first time-frequency resource is an ending time of the fourth time-frequency resource.

Specifically, according to an aspect of the present application, a starting time of the third time-frequency resource in the time domain is before a starting time of the fourth time-frequency resource in the time domain.

As an embodiment, an end time of the third time-frequency resource in the time domain is before an end time of the fourth time-frequency resource in the time domain.

As a sub-embodiment of the foregoing embodiment, the starting time of the first time-frequency resource is the starting time of the third time-frequency resource.

As an embodiment, the first time-frequency resource belongs to the fourth time-frequency resource and the first time-frequency resource belongs to the third time-frequency resource.

judging monitoring after the time domain resource occupied by the first signaling is behind the time domain resource occupied by the second signaling; or, the time domain resource occupied by the first signaling is judged not to be monitored before the time domain resource occupied by the second signaling.

As an embodiment, in the above method, the scheduling signaling sent later can Override the indication of whether to perform monitoring of the scheduling signaling sent earlier (Override); the method can improve the scheduling flexibility and reduce the scheduling delay.

As an embodiment, if the time domain resource occupied by the first signaling is behind the time domain resource occupied by the second signaling, determining to monitor; and if the time domain resource occupied by the first signaling is before the time domain resource occupied by the second signaling, judging not to monitor.

As an embodiment, if the starting time of the time domain resource occupied by the first signaling is after the starting time of the time domain resource occupied by the second signaling, the first time-frequency resource is a subset of the third time-frequency resource; and if the starting time of the time domain resource occupied by the first signaling is before the starting time of the time domain resource occupied by the second signaling, the first time-frequency resource is a subset of the fourth time-frequency resource.

judging that the third time frequency resource is not monitored after the starting time of the fourth time frequency resource in the time domain; or, the starting time of the third time frequency resource in the time domain is before the starting time of the fourth time frequency resource in the time domain, and the monitoring is judged.

As an embodiment, in the method, the indication (for whether to perform monitoring) corresponding to the uplink transmission that occurs first can Override the indication (Override) corresponding to the uplink transmission that occurs later; the method can avoid interruption of the uplink transmission which occurs first, and keeps the integrity of transmission.

As an embodiment, if the starting time of the third time frequency resource in the time domain is after the starting time of the fourth time frequency resource in the time domain, it is determined not to monitor; and if the starting time of the third time frequency resource on the time domain is before the starting time of the fourth time frequency resource on the time domain, judging to monitor.

As an embodiment, neither the Uplink transmission scheduled by the first signaling nor the Uplink transmission scheduled by the second signaling includes UCI (Uplink Control Information), or both the Uplink transmission scheduled by the first signaling and the Uplink transmission scheduled by the second signaling include UCI.

As an embodiment, both the Uplink transmission scheduled by the first signaling and the Uplink transmission scheduled by the second signaling occupy a PUSCH (Physical Uplink Shared Channel).

As an embodiment, Transport channels (Transport blocks) corresponding to the UpLink transmission scheduled by the first signaling and the UpLink transmission scheduled by the second signaling are both UL-SCH (UpLink Shared Channel).

judging monitoring when the uplink transmission scheduled by the first signaling comprises uplink control information and the uplink transmission scheduled by the second signaling does not comprise the uplink control information; or, the uplink transmission scheduled by the first signaling does not include uplink control information and the uplink transmission scheduled by the second signaling includes uplink control information, and it is determined not to monitor.

As an embodiment, the above aspect ensures transmission reliability of Uplink Control Information (Uplink Control Information), thereby ensuring system transmission reliability.

As an embodiment, if the uplink transmission scheduled by the first signaling includes uplink control information and the uplink transmission scheduled by the second signaling does not include uplink control information, determining to monitor; and if the uplink transmission scheduled by the first signaling does not comprise uplink control information and the uplink transmission scheduled by the second signaling comprises the uplink control information, judging not to monitor.

The application discloses a method used in a base station for wireless communication, which is characterized by comprising the following steps:

sending a first signaling and a second signaling; the first signaling is used for indicating monitoring, and the second signaling is used for indicating not monitoring;

detecting a first wireless signal on a first time-frequency resource;

wherein the first signaling and the second signaling are used by a sender of the first wireless signal to judge whether to monitor; if it is determined not to listen, the first wireless signal is transmitted on the first time-frequency resource, and if it is determined to listen, the wireless transmission on the first time-frequency resource is dropped and the first listening is performed by the sender of the first wireless signal.

detecting a second wireless signal on a second time-frequency resource;

wherein, the judgment result is monitoring, the channel is judged to be idle in the first monitoring, and the second wireless signal is received in the second time frequency resource; or, the judgment result is monitoring, and the channel is judged not to be idle in the first monitoring, and the second wireless signal is not received in the second time-frequency resource; or, if the result is not monitoring, the second wireless signal is received in the second time-frequency resource.

Specifically, according to one aspect of the present application, it is characterized in that the time domain resource occupied by the first signaling is behind the time domain resource occupied by the second signaling, and the determination result is monitoring; or, the time domain resource occupied by the first signaling is before the time domain resource occupied by the second signaling, and the judgment result is that the monitoring is not performed.

Specifically, according to one aspect of the present application, it is characterized in that the starting time of the third time frequency resource in the time domain is after the starting time of the fourth time frequency resource in the time domain, and the result is determined to be not monitored; or, the starting time of the third time frequency resource in the time domain is before the starting time of the fourth time frequency resource in the time domain, and the judgment result is monitoring.

Specifically, according to an aspect of the present application, the uplink transmission scheduled by the first signaling includes uplink control information and the uplink transmission scheduled by the second signaling does not include the uplink control information, and the determination result is monitoring; or the uplink transmission scheduled by the first signaling does not include uplink control information and the uplink transmission scheduled by the second signaling includes uplink control information, and the judgment result is that the monitoring is not performed.

The application discloses a user equipment used for wireless communication, characterized by comprising:

a first receiving module: receiving a first signaling and a second signaling; the first signaling is used for indicating monitoring, and the second signaling is used for indicating not monitoring;

a first sending module: judging whether to monitor according to the first signaling and the second signaling; and if the monitoring is judged, the first wireless signal is transmitted on the first time-frequency resource, and if the monitoring is judged, the wireless transmission on the first time-frequency resource is abandoned and the first monitoring is executed.

As an embodiment, the user equipment used for wireless communication described above is characterized by comprising:

As an embodiment, the user equipment used for wireless communication is characterized in that the first signaling is used for indicating a third time-frequency resource, and the second signaling is used for indicating a fourth time-frequency resource; and the resource occupied by the third time-frequency resource in the time domain is overlapped with the resource occupied by the fourth time-frequency resource in the time domain.

As an embodiment, the user equipment used for wireless communication is characterized in that the starting time of the third time-frequency resource in the time domain is after the starting time of the fourth time-frequency resource in the time domain, or the starting time of the third time-frequency resource in the time domain is the starting time of the fourth time-frequency resource in the time domain.

As an embodiment, the user equipment configured for wireless communication is characterized in that the starting time of the third time-frequency resource in the time domain is before the starting time of the fourth time-frequency resource in the time domain.

The application discloses a base station used for wireless communication, characterized by comprising:

a second sending module: sending a first signaling and a second signaling; the first signaling is used for indicating monitoring, and the second signaling is used for indicating not monitoring;

a second receiving module: detecting a first wireless signal on a first time-frequency resource;

As an embodiment, the base station used for wireless communication described above includes:

detecting a second wireless signal on a second time-frequency resource;

As an embodiment, the base station used for wireless communication is characterized in that the first signaling is used for indicating a third time-frequency resource, and the second signaling is used for indicating a fourth time-frequency resource; and the resource occupied by the third time-frequency resource in the time domain is overlapped with the resource occupied by the fourth time-frequency resource in the time domain.

As an embodiment, the base station used for wireless communication is characterized in that the starting time of the third time-frequency resource in the time domain is after the starting time of the fourth time-frequency resource in the time domain, or the starting time of the third time-frequency resource in the time domain is the starting time of the fourth time-frequency resource in the time domain.

As an embodiment, the base station used for wireless communication is characterized in that the starting time of the third time-frequency resource in the time domain is before the starting time of the fourth time-frequency resource in the time domain.

As an embodiment, the base station used for wireless communication is characterized in that the time domain resource occupied by the first signaling is behind the time domain resource occupied by the second signaling, and the judgment result is monitoring; or, the time domain resource occupied by the first signaling is before the time domain resource occupied by the second signaling, and the judgment result is that the monitoring is not performed.

As an embodiment, the base station used for wireless communication is characterized in that the starting time of the third time-frequency resource in the time domain is after the starting time of the fourth time-frequency resource in the time domain, and the result of the judgment is not to monitor; or, the starting time of the third time frequency resource in the time domain is before the starting time of the fourth time frequency resource in the time domain, and the judgment result is monitoring.

As an embodiment, the base station used for wireless communication is characterized in that the uplink transmission scheduled by the first signaling includes uplink control information and the uplink transmission scheduled by the second signaling does not include uplink control information, and the determination result is listening; or the uplink transmission scheduled by the first signaling does not include uplink control information and the uplink transmission scheduled by the second signaling includes uplink control information, and the judgment result is that the monitoring is not performed.

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

improving scheduling flexibility;

reducing the delay;

improvement of transmission reliability.

Drawings

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

fig. 1 shows a flow diagram in a user equipment according to an embodiment of the application;

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

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

fig. 4 illustrates a schematic diagram of an NR (New Radio) node and a UE according to an embodiment of the present application;

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

FIG. 6 shows a flow diagram of a first listen for multiple transmissions according to one embodiment of the present application;

FIG. 7 shows a schematic diagram of a first format according to an embodiment of the present application;

fig. 8 shows a flow diagram of uplink transmission according to an embodiment of the present application;

FIG. 9 shows a schematic diagram of a third time domain resource and a fourth time domain resource according to an embodiment of the present application;

FIG. 10 shows a timing diagram according to an embodiment of the present application;

FIG. 11 is a diagram illustrating a start time of a third time-frequency resource before a start time of a fourth time-frequency resource according to an embodiment of the present application;

FIG. 12 shows a schematic diagram of a start time of a third time-frequency resource after a start time of a fourth time-frequency resource according to an embodiment of the application;

FIG. 13 shows a schematic diagram of a start time of a third time-frequency resource after a start time of a fourth time-frequency resource according to yet another embodiment of the present application;

FIG. 14 shows a schematic diagram of a third time-frequency resource and a fourth time-frequency resource in the frequency domain according to an embodiment of the application;

FIG. 15 shows a block diagram of a processing device in a user equipment according to an embodiment of the application;

fig. 16 shows a block diagram of a processing device in a base station according to an embodiment of the present application;

example 1

Embodiment 1 illustrates a flow chart in a user equipment, as shown in fig. 1.

In embodiment 1, the user equipment receives a first signaling and a second signaling in step S01, the first signaling is used for indicating listening, the second signaling is used for indicating not listening; judging whether to monitor according to the first signaling and the second signaling in step S02; if it is judged not to listen, the first wireless signal is transmitted on the first time-frequency resource in step S03, and if it is judged to listen, the wireless transmission on the first time-frequency resource is abandoned and the first listening is performed in step S04.

As an embodiment, the first signaling and the second signaling are DCI (Downlink Control information) for an UpLink Grant (UpLink Grant), respectively.

As an embodiment, the DCI format for the uplink grant includes LTE (Long Term Evolution) DCI format (format)0 and LTE DCI format 4.

As an embodiment, the DCI format for the uplink grant includes NR (New Radio ) DCI format 0_0 and NR DCI format 0_ 1.

As an embodiment, the first time-frequency Resource includes a plurality of REs (Resource elements).

As an embodiment, the first time-frequency resource comprises a positive integer number of consecutive multicarrier symbols in the time domain.

As an embodiment, the multicarrier symbol is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

As an embodiment, the multicarrier symbol is an SC-FDMA (Single Carrier Frequency Division Multiplexing Access) symbol.

As an embodiment, the Multi-Carrier symbol is an FBMC (Filter Bank Multi-Carrier) symbol.

As one embodiment, the first time-frequency resource includes a plurality of consecutive subcarriers in a frequency domain.

As an embodiment, the first time-frequency resource includes a plurality of subcarrier groups in a frequency domain, any two subcarrier groups of the plurality of subcarrier groups are discontinuous in the frequency domain, and any subcarrier group of the plurality of subcarrier groups includes a positive integer of continuous subcarriers.

As a sub-embodiment of the above-mentioned embodiments, the frequency domain intervals between any two subcarrier groups of the plurality of subcarrier groups are equal.

As a sub-embodiment of the above-mentioned embodiments, the number of subcarriers included in any two subcarrier groups of the plurality of subcarrier groups is the same.

As an embodiment, the first signaling indicates one listening type from Q1 listening types, the second signaling indicates no listening from Q1 listening types, the Q1 is a positive integer greater than 1; one of the Q1 listening types is not listening, and the one of the first signaling indication is one of the Q1 listening types other than not listening.

As an embodiment, any one of the Q1 snoop types, except not snoop, is a type of LBT.

As an embodiment, one of the Q1 listening types is a single-shot (one shot) LBT.

As an embodiment, one of the Q1 snoop types is a multiple shot (multiple shot) LBT.

As an example, the LBT of the single transmission is a type 2(Category 2) LBT.

As an example, the multi-transmitted LBT is a type 4(Category 4) LBT.

As an embodiment, the Q1 listening types include a single-transmission LBT and a multiple-transmission LBT.

As an embodiment, the first listening is the one type of listening indicated by the first signaling.

As one embodiment, the first snoop is a type of LBT.

As an embodiment, a received power on a target time-frequency resource is used for the first listening, the target time-frequency resource comprising the first time-frequency resource.

As one embodiment, the wireless transmission on the first time-frequency resource includes: and discarding the modulation symbol corresponding to the first wireless signal.

As one embodiment, the wireless transmission on the first time-frequency resource includes: and clearing the buffer occupied by the channel-coded bits carried by the first wireless signal.

As one embodiment, the wireless transmission on the first time-frequency resource includes: defer transmitting the first wireless signal.

As one embodiment, the wireless transmission on the first time-frequency resource includes: and puncturing (punture) a modulation symbol corresponding to the first wireless signal on a first time-frequency resource.

As one embodiment, the act of first listening includes: detecting the energy of the received signal in the target time frequency Resource to judge whether the channel is idle, wherein at least one Resource Element (RE) simultaneously belongs to the target time frequency Resource and the first time frequency Resource.

As an embodiment, the target time-frequency resource comprises the first time-frequency resource.

As an embodiment, the Physical layer Channel occupied by the first wireless signal includes a PUSCH (Physical Uplink Shared Channel).

As an embodiment, the Physical layer Channel occupied by the first radio signal includes a PUCCH (Physical Uplink Control Channel).

As one embodiment, the first wireless Signal includes an SRS (Sounding Reference Signal).

As one embodiment, the first wireless Signal includes a DMRS (Demodulation Reference Signal).

As an embodiment, the first listening is used by the ue to determine whether a channel is idle.

As one embodiment, the first wireless signal occupies all REs in the first time-frequency resource.

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

Example 2

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

Fig. 2 illustrates a network architecture 200 of LTE (Long-Term Evolution), LTE-a (Long-Term Evolution Advanced) and future 5G systems. The LTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200. The EPS200 may include one or more UEs (User Equipment) 201, E-UTRAN-NR (Evolved UMTS terrestrial radio access network-new radio) 202, 5G-CN (5G-Core network, 5G Core network)/EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) 220, and internet service 230. The UMTS is compatible with Universal Mobile Telecommunications System (Universal Mobile Telecommunications System). The EPS200 may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown in fig. 2, the EPS200 provides packet-switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit-switched services. The E-UTRAN-NR202 includes NR (New Radio ) node bs (gnbs) 203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gNB203 may be connected to other gnbs 204 via an X2 interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (point of transmission reception), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the 5G-CN/EPC 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a gaming console, a drone, an aircraft, a narrowband physical network device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the 5G-CN/EPC210 through an S1 interface. The 5G-CN/EPC210 includes an MME211, other MMEs 214, an S-GW (Service Gateway) 212, and a P-GW (Packet data Network Gateway) 213. The MME211 is a control node that handles signaling between the UE201 and the 5G-CN/EPC 210. In general, the MME211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW 213. The P-GW213 provides UE IP address allocation as well as other functions. The P-GW213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a PS streaming service (PSs).

As an embodiment, the UE201 corresponds to a user equipment in this application, and the gNB203 corresponds to a base station in this application.

As a sub-embodiment, the UE201 supports wireless communication over unlicensed spectrum.

As a sub-embodiment, the gNB203 supports wireless communication over unlicensed spectrum.

As a sub-embodiment, the UE201 supports LBT.

As a sub-embodiment, the gNB203 supports LBT.

Example 3

Embodiment 3 illustrates a schematic diagram of an embodiment of radio protocol architecture for the user plane and the control plane, as shown in fig. 3.

Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane and the control plane, fig. 3 showing the radio protocol architecture for the UE and the gNB in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above PHY301 and is responsible for the link between the UE and the gNB through PHY 301. In the user plane, the L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at 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) that terminates at the P-GW213 on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.). The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides header compression for upper layer packets to reduce radio transmission overhead, security by ciphering the packets, and handover support for UEs between gnbs. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ (Hybrid Automatic Repeat reQuest). The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the UE and the gNB is substantially the same for the physical layer 301 and the L2 layer 305, but without the header compression function for the control plane. The Control plane also includes an RRC (Radio Resource Control) sublayer 306 in layer 3 (layer L3). The RRC sublayer 306 is responsible for obtaining radio resources (i.e., radio bearers) and configures the lower layers using RRC signaling between the gNB and the UE.

As an example, the radio protocol architecture in fig. 3 is applicable to the user equipment in the present application.

As an example, the radio protocol architecture in fig. 3 is applicable to the base station in the present application.

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

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

As an embodiment, the first listening in the present application is performed at the PHY 301.

Example 4

Embodiment 4 illustrates a schematic diagram of an NR node and a UE as shown in fig. 4. Fig. 4 is a block diagram of a UE450 and a gNB410 in communication with each other in an access network.

gNB410 includes a controller/processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multiple antenna receive processor 472, a multiple antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.

The UE450 includes a controller/processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter/receiver 454, and an antenna 452.

In the DL (Downlink), at the gNB410, upper layer data packets from the core network are provided to a controller/processor 475. The controller/processor 475 implements the functionality of layer L2. In the DL, the controller/processor 475 provides header compression, ciphering, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the UE450 based on various priority metrics. Controller/processor 475 is also responsible for HARQ operations, retransmission of lost packets, and signaling to UE 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate Forward Error Correction (FEC) at the UE450, as well as mapping of signal constellation based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding/beamforming on the coded and modulated symbols to generate one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes with reference signals (e.g., pilots) in the time and/or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate the physical channels carrying the time-domain multicarrier symbol streams. The multi-antenna transmit processor 471 then performs transmit analog precoding/beamforming operations on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream that is then provided to a different antenna 420.

In the DL (Downlink), at the UE450, each receiver 454 receives a signal through its respective antenna 452. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream that is provided to a receive processor 456. Receive processor 456 and multi-antenna receive processor 458 implement the various signal processing functions of the L1 layer. A multi-antenna receive processor 458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. Receive processor 456 converts the baseband multicarrier symbol stream after the receive analog precoding/beamforming operation from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals to be used for channel estimation are demultiplexed by the receive processor 456, and the data signals are subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial streams destined for the UE 450. The symbols on each spatial stream are demodulated and recovered at a receive processor 456 and soft decisions are generated. Receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the gNB410 on the physical channels. The upper layer data and control signals are then provided to a controller/processor 459. The controller/processor 459 implements the functionality of the L2 layer. The controller/processor 459 may be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In the DL, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer data packets from the core network. The upper layer packet is then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing. The controller/processor 459 is also responsible for error detection using an Acknowledgement (ACK) and/or Negative Acknowledgement (NACK) protocol to support HARQ operations.

In the UL (Uplink), at the UE450, a data source 467 is used to provide upper layer data packets to the controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the transmit function at the gNB410 described in the DL, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the gNB410, implementing L2 layer functions for the user plane and the control plane. The controller/processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the gNB 410. A transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding/beamforming by a multi-antenna transmit processor 457, and the transmit processor 468 modulates the resulting spatial streams into multi-carrier/single-carrier symbol streams, which are provided to different antennas 452 via a transmitter 454 after analog precoding/beamforming in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and provides the radio frequency symbol stream to the antenna 452.

In UL (Uplink), the function at the gNB410 is similar to the reception function at the UE450 described in DL. Each receiver 418 receives an rf signal through its respective antenna 420, converts the received rf signal to a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multiple antenna receive processor 472 collectively implement the functionality of the L1 layer. Controller/processor 475 implements the L2 layer functions. The controller/processor 475 can be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In the UL, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the UE 450. Upper layer data packets from the controller/processor 475 may be provided to a core network. Controller/processor 475 is also responsible for error detection using the ACK and/or NACK protocol to support HARQ operations.

As an embodiment, the UE450 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The UE450 apparatus at least: receiving a first signaling and a second signaling; the first signaling is used for indicating monitoring, and the second signaling is used for indicating not monitoring; judging whether to monitor according to the first signaling and the second signaling; and if the monitoring is judged, the first wireless signal is transmitted on the first time-frequency resource, and if the monitoring is judged, the wireless transmission on the first time-frequency resource is abandoned and the first monitoring is executed.

As an embodiment, the UE450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving a first signaling and a second signaling; the first signaling is used for indicating monitoring, and the second signaling is used for indicating not monitoring; judging whether to monitor according to the first signaling and the second signaling; and if the monitoring is judged, the first wireless signal is transmitted on the first time-frequency resource, and if the monitoring is judged, the wireless transmission on the first time-frequency resource is abandoned and the first monitoring is executed.

As an embodiment, the gNB410 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The gNB410 apparatus at least: sending a first signaling and a second signaling; the first signaling is used for indicating monitoring, and the second signaling is used for indicating not monitoring; detecting a first wireless signal on a first time-frequency resource; wherein the first signaling and the second signaling are used by a sender of the first wireless signal to judge whether to monitor; if it is determined not to listen, the first wireless signal is transmitted on the first time-frequency resource, and if it is determined to listen, the wireless transmission on the first time-frequency resource is dropped and the first listening is performed by the sender of the first wireless signal.

As an embodiment, the gNB410 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: sending a first signaling and a second signaling; the first signaling is used for indicating monitoring, and the second signaling is used for indicating not monitoring; detecting a first wireless signal on a first time-frequency resource; wherein the first signaling and the second signaling are used by a sender of the first wireless signal to judge whether to monitor; if it is determined not to listen, the first wireless signal is transmitted on the first time-frequency resource, and if it is determined to listen, the wireless transmission on the first time-frequency resource is dropped and the first listening is performed by the sender of the first wireless signal.

As an embodiment, the UE450 corresponds to a user equipment in this application, and the gNB410 corresponds to a base station in this application.

As an example, { the antenna 452, the receiver 454, the reception processor 456} is used for receiving the first signaling and the second signaling in this application; { the antenna 420, the transmitter 418, the transmit processor 416} is used to transmit the first signaling and the second signaling in this application.

As an embodiment, at least one of the multi-antenna receive processor 458, the controller/processor 459 is configured to receive the first signaling and the second signaling in the present application; { the multi-antenna transmit processor 471, the controller/processor 475}, at least one of which is used to send the first signaling and the second signaling in this application.

As an example, the antenna 452, the receiver 454, and the reception processor 456 are used to perform the first listening in this application.

As an embodiment, at least one of the multi-antenna receive processor 458, the controller/processor 459 is configured to perform the first listening in the present application.

As an example, { the antenna 420, the receiver 418, the reception processor 470} is used for receiving the first wireless signal in the present application; { the antenna 452, the transmitter 454, the transmission processor 468} is used to transmit the first wireless signal in this application.

As one example, { the multi-antenna transmit processor 457, the controller/processor 459} is used to transmit the first wireless signal in this application; { the multi-antenna reception processor 472, the controller/processor 475} is used for receiving the first wireless signal in this application.

Example 5

Embodiment 5 illustrates a flow chart of a first monitoring of a single transmission, as shown in fig. 5.

In step S1102, the user equipment performs energy detection within one delay period (defer duration) of the target frequency band; judging whether all time slot periods in the delay period are idle in step S1103, if so, considering the channel to be idle in step S1104; if not, the channel is considered not idle in step S1105.

As an embodiment, the first time-frequency resource belongs to the delay period in the time domain.

As an embodiment, the first time-frequency resource belongs to the target frequency band in a frequency domain.

As one embodiment, the duration of the delay period is 25 microseconds.

As one embodiment, the duration of the delay period does not exceed 25 microseconds.

As an example, the duration of the delay period is not less than 16 microseconds.

As an embodiment, the duration of the delay period is fixed.

As an example, each of the slot periods in the delay period is 9 microseconds.

As an example, each of the slot periods in the delay period does not exceed 9 microseconds.

As an embodiment, each of the slot periods in the delay period is not less than 4 microseconds.

As an embodiment, the duration of all the slot periods in the delay period is the same.

As an embodiment, the delay period is divided into a positive integer number of the slot periods and a time slice in sequence from front to back, and the duration of the time slice is less than the duration of the slot period.

As an embodiment, the target band is a BWP (BandWidth Part).

As an embodiment, the target frequency band is one carrier.

As an embodiment, in step S1103, for any time slot period within the delay period, if the received power is greater than a certain threshold, the channel in the any time slot period is considered not to be idle, and if the received power is not greater than the certain threshold, the channel in the any time slot period is considered to be idle.

As an embodiment, in step S1103, for any time slot period within the delay period, if the received power is not less than a specific threshold, the channel in the any time slot period is considered not to be idle, and if the received power is less than a specific threshold, the channel in the any time slot period is considered to be idle.

As one embodiment, the particular threshold is-72 dBm.

As an embodiment, the specific threshold is configurable (i.e. related to downlink signaling).

As an embodiment, the specific threshold value is related to a maximum transmission power of the user equipment.

Example 6

Embodiment 6 illustrates a flow chart of a first listen for multiple transmissions, as shown in fig. 6.

In step S2102, the user equipment performs energy detection within one delay period (defer duration) of the target frequency band; in step S2103, determining whether all the time slot periods within the delay period are idle, if yes, proceeding to step S2104 to consider that the channel is idle; if not, proceed to step S2105 to perform energy detection within one delay period of the target frequency band; judging whether all the time slot periods within the one delay period are idle in step S2106, if so, proceeding to step S2107 to set a first counter equal to R1; otherwise, returning to the step S2105; in step S2108, it is determined whether the first counter is 0, and if so, the process proceeds to step S2104; if not, proceed to step S2109 to perform energy detection in one additional slot period of the target frequency band; judging whether the additional time slot period is idle in step S2110, if so, proceeding to step S2111 to reduce the first counter by 1, and then returning to step 2108; if not, proceed to step S2112 to perform energy detection within an additional delay period of the target frequency band; it is judged in step S2113 whether or not all the slot periods within this additional delay period are free, and if yes, it proceeds to step S2111, and if no, it returns to step S2112.

As an embodiment, if the step S2104 cannot be performed before the starting time of the second time-frequency resource, the user equipment determines that the channel is not idle.

As an embodiment, if the above step S2104 cannot be performed until the expiration time of the first time-frequency resource, the user equipment determines that the channel is not idle.

Example 7

Embodiment 7 illustrates a schematic diagram of the first format, as shown in fig. 7.

In embodiment 7, the first format includes a plurality of domains, such as a first domain, a second domain, and a third domain; where each field consists of a positive integer number of bits.

As one embodiment, the first format is a DCI format for uplink grant.

As one embodiment, the DCI for an uplink grant includes a partial field (field) in an LTE DCI format 0.

As an embodiment, the DCI format for uplink grant includes all fields in NR DCI format 0_ 0.

As an embodiment, the DCI format for uplink grant includes a partial field in NR DCI format 0_ 0.

As an embodiment, the DCI format for uplink grant includes all fields in NR DCI format 0_ 1.

As an embodiment, the DCI format for uplink grant includes a partial field in NR DCI format 0_ 1.

As a sub-embodiment of the above embodiment, the first format includes an MCS (Modulation and Coding Status) field, an HARQ (Hybrid Automatic Repeat reQuest) Process Number (Process Number) field, an RV (Redundancy Version) field, and an NDI (New Data Indicator) field.

As a sub-embodiment of the above embodiment, the two domains in the first format indicate time domain resources and frequency domain resources, respectively.

As an embodiment, the first format is an RRC IE (resource Element).

As an embodiment, the first format is a MAC (Media Access Control) CE (Control Element).

As an embodiment, the first format is applied to first signaling, the first format is applied to second signaling, the first signaling is used for indicating a third time-frequency resource, the second signaling is used for indicating a fourth time-frequency resource; and the resource occupied by the third time-frequency resource in the time domain is overlapped with the resource occupied by the fourth time-frequency resource in the time domain.

As an embodiment, one field in the first format indicates one snoop type from Q1 snoop types, the Q1 being a positive integer greater than 1; one of the Q1 snoop types is no snoop, and any one of the Q1 snoop types other than no snoop is a type of LBT.

As an embodiment, the second signaling indicates no listening from the Q1 listening types, and the one listening type indicated by the first signaling is one of the Q1 listening types other than no listening.

As an example, the LBT of the single transmission is a type 2(Category 2) LBT.

As an example, the multi-transmitted LBT is a type 4(Category 4) LBT.

As one embodiment, the first snoop is a type of LBT.

Example 8

Embodiment 8 illustrates a flow chart of uplink transmission, as shown in fig. 8. In fig. 8, base station N2 is the serving cell maintaining base station for UE U1.

For the base station N2, transmitting the first signaling and the second signaling in step S20; detecting a first wireless signal in a first time-frequency resource in step S21; detecting a second wireless signal in a second time-frequency resource in step S22;

for the UE U1, receiving the first signaling and the second signaling in step S10; judging whether to monitor according to the first signaling and the second signaling in step S11; if it is determined not to listen, transmitting a first wireless signal on the first time-frequency resource in step S12 and transmitting a second wireless signal on the second time-frequency resource in step S13; if the interception is judged, wireless transmission on the first time-frequency resource is released and the first interception is performed in step S14; jumping to step S13 if the channel is judged to be idle in the first listening; if the channel is determined not to be idle in the first listening, the wireless transmission in the second time-frequency resource is abandoned in the step S15.

In embodiment 8, the first signaling is used to indicate listening, and the second signaling is used to indicate not listening.

As one embodiment, a first block of bits is used to generate a first set of modulation symbols used to generate a combined wireless signal; the first wireless signal comprises a portion of the combined wireless signal mapped in the first time-frequency resource; the second wireless signal comprises a portion of the combined wireless signal map in the second time-frequency resource.

One advantage of the above embodiment is that the modulation symbols comprised by the second wireless signal are not affected whether or not the first wireless signal is transmitted by the first node N1; the base station N2 is able to perform channel decoding for the first block of bits.

As an embodiment, the first Modulation symbol set is an output of the first bit block after Channel Coding (Channel Coding), Scrambling (Scrambling), and Modulation Mapper (Modulation Mapper) in sequence.

As an embodiment, the combined wireless signal is output after passing through a Layer Mapper (Layer Mapper), a Precoding (Precoding), a Resource Element Mapper (Resource Element Mapper), and a wideband symbol Generation (Generation) in sequence from the first modulation symbol set.

As an embodiment, the combined wireless signal is output from the first modulation symbol set after passing through a Resource Element Mapper (Resource Element Mapper) and a wideband symbol Generation (Generation) in sequence.

As an embodiment, the first bit block is output after Channel Coding (Channel Coding), Scrambling (Scrambling), Modulation Mapper (Modulation Mapper), Layer Mapper (Layer Mapper), Precoding (Precoding), Resource Element Mapper (Resource Element Mapper), and wideband symbol Generation (Generation) sequentially performed by the first bit block.

As an embodiment, the combined wireless signal is output from the first bit block after Channel Coding (Channel Coding), Scrambling (Scrambling), Modulation Mapper (Modulation Mapper), Resource Element Mapper (Resource Element Mapper), and wideband symbol Generation (Generation) in sequence.

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

For one embodiment, the first bit Block includes one or more CBGs (Code Block groups).

As an embodiment, the frequency domain resources occupied by the first wireless signal and the second wireless signal all belong to the same carrier.

As an embodiment, the first signaling and the second signaling are both sent on the same carrier.

As an embodiment, the same carrier deploys unlicensed spectrum.

As an embodiment, in the step S21, the base station N2 determines whether the first wireless signal is transmitted according to the received power in the first time-frequency resource; if the received power in the first time-frequency resource is larger than a given threshold value, judging that the first wireless signal is sent; otherwise, the first wireless signal is judged not to be sent.

As an embodiment, in the step S22, the base station N2 determines that the second wireless signal is transmitted if CRC (Cyclic Redundancy Check) verification is passed assuming that the second wireless signal is transmitted to perform channel decoding on the first bit block; and if the CRC is not verified, judging that the second wireless signal is not transmitted.

As an embodiment, in the step S22, the base station N2 determines whether the second wireless signal is transmitted according to whether a signature sequence is detected in the second time-frequency resource; if the signature sequence is detected in the second time-frequency resource, the base station N2 determining that the second wireless signal is transmitted; otherwise, the base station N2 determines that the second wireless signal is not transmitted.

As an embodiment, in the step S21, the base station N2 determines whether the first wireless signal is transmitted according to whether a signature sequence is detected in the first time-frequency resource; if the signature sequence is detected in the first time frequency resource, the base station N2 determining that the first wireless signal is transmitted; otherwise, the base station N2 determines that the first wireless signal is not being transmitted.

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

As an example, the unit of the given threshold is mW (milliwatt).

Example 9

Embodiment 9 illustrates a schematic diagram of a third time domain resource and a fourth time domain resource, as shown in fig. 9.

In embodiment 9, the third time domain resource and the fourth time domain resource respectively include Q1 multicarrier symbols and Q2 multicarrier symbols, and Q1 and Q2 are positive integers.

As an embodiment, the third time domain resource and the fourth time domain resource are respectively time domain resources occupied by the third time frequency resource and the fourth time frequency resource, and the third time domain resource and the fourth time domain resource are overlapped.

As an embodiment, the third time domain resource and the fourth time domain resource are respectively time domain resources occupied by the fourth time frequency resource and the third time frequency resource, and the third time domain resource and the fourth time domain resource are overlapped.

As an embodiment, the third time domain resource and the fourth time domain resource are respectively time domain resources occupied by the first signaling and the second signaling, and the ue determines not to monitor.

As an embodiment, the third time domain resource and the fourth time domain resource are respectively time domain resources occupied by the second signaling and the first signaling, and the ue determines to monitor.

As an embodiment, the starting time of the third time domain resource is the starting time of the fourth time domain resource.

Example 10

Embodiment 10 illustrates a timing diagram according to an embodiment of the present application, as shown in fig. 10.

As an embodiment, the first time domain resource and the second time domain resource are respectively time domain resources occupied by two scheduling signaling, and the two scheduling signaling are a first signaling and a second signaling; the first signaling is used for indicating monitoring, and the second signaling is used for indicating not monitoring; the user equipment judges whether to monitor according to the indication of one scheduling signaling sent in the second time domain resource in the two scheduling signaling, namely if the first signaling is sent in the second time domain resource, the monitoring is judged; otherwise, judging not to monitor.

As an embodiment, the first signaling and the second signaling indicate a third time-frequency resource and a fourth time-frequency resource, respectively; and the resource occupied by the third time-frequency resource in the time domain is overlapped with the resource occupied by the fourth time-frequency resource in the time domain.

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

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

As an embodiment, the first time domain resource, the second time domain resource, the third time domain resource and the fourth time domain resource respectively include a positive integer number of OFDM symbols

Example 11

Embodiment 11 illustrates a schematic diagram that a starting time of a third time-frequency resource is before a starting time of a fourth time-frequency resource, as shown in fig. 11, where a square filled with oblique lines identifies a time-domain resource occupied by a first time-frequency resource.

In embodiment 11, a start time of the third time-frequency resource in the time domain is before a start time of the fourth time-frequency resource in the time domain, and an end time of the third time-frequency resource in the time domain is before an end time of the fourth time-frequency resource in the time domain; the time domain resource occupied by the first time frequency resource is in the time domain resource occupied by the third time frequency resource and in the time domain resource occupied by the fourth time frequency resource; the starting time of the first time-frequency resource is the starting time of the fourth time-frequency resource.

As an embodiment, the ue performs LBT between the starting time of the third time-frequency resource and the starting time of the fourth time-frequency resource to determine that the channel is not idle, so that the ue cannot perform scheduling of the first signaling before the starting time of the fourth time-frequency resource.

As an embodiment, the ue determines not to monitor according to the first signaling and the second signaling, and further sends the first radio signal on the first time-frequency resource.

As an embodiment, the first wireless signal comprises a first wireless sub-signal and a second wireless sub-signal, the first wireless sub-signal and the second wireless sub-signal being scheduled by the first signaling and the second signaling, respectively.

As an embodiment, the first radio signal is scheduled only by the second signaling, i.e. the user equipment gives up performing the scheduling of the first signaling.

As an embodiment, the ue determines not to listen according to the first signaling and the second signaling, and sends the second wireless signal on the second time-frequency resource.

As an embodiment, the second wireless signal comprises a third wireless sub-signal and a fourth wireless sub-signal, the third wireless sub-signal and the fourth wireless sub-signal being scheduled by the first signaling and the second signaling, respectively.

As an embodiment, the second radio signal is scheduled only by the second signaling, i.e. the user equipment gives up performing the scheduling of the first signaling.

As an embodiment, if it is determined not to monitor, the ending time of the time domain resource occupied by the second time-frequency resource is the ending time of the time domain resource occupied by the fourth time-frequency resource, that is, the second time in fig. 11.

As an embodiment, the ending time of the time domain resource occupied by the second time frequency resource is the ending time of the time domain resource occupied by the third time frequency resource, that is, the first time in fig. 11.

Example 12

Embodiment 12 illustrates a schematic diagram that the starting time of the third time-frequency resource is after the starting time of the fourth time-frequency resource, as shown in fig. 12, where a square filled with oblique lines identifies a time-domain resource occupied by the first time-frequency resource.

In embodiment 12, the time domain resource occupied by the first time-frequency resource is in the time domain resource occupied by the fourth time-frequency resource and is out of the time domain resource occupied by the third time-frequency resource; the starting time of the third time frequency resource on the time domain is after the starting time of the fourth time frequency resource on the time domain; the cut-off time of the third time frequency resource in the time domain is after the cut-off time of the fourth time frequency resource in the time domain.

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

As an embodiment, the starting time of the time domain resource occupied by the first time-frequency resource is the starting time of the time domain resource occupied by the fourth time-frequency resource.

Since the second signaling instruction does not monitor the potential meaning that the time domain resource before the time domain resource occupied by the fourth time frequency resource is occupied by the downlink transmission, the user equipment cannot perform the first monitoring before the time domain resource occupied by the fourth time frequency resource, and thus the above embodiment avoids the conflict between the first monitoring and the downlink transmission.

As an embodiment, the ending time of the time domain resource occupied by the first time-frequency resource is the ending time of the time domain resource occupied by the fourth time-frequency resource.

As an embodiment, if it is determined not to listen, the ending time of the second time-frequency resource is the ending time of the fourth time-frequency resource, i.e. the first time in fig. 12.

In the above embodiment, since the no-LBT can only be used in the gNB COT, the ue cannot determine whether the time domain resource from the first time to the second time in fig. 12 belongs to the gNB COT, and thus cannot use the no-LBT.

As an embodiment, if monitoring is determined, the ending time of the second time-frequency resource is the ending time of the third time-frequency resource, i.e. the second time in fig. 12.

In the above embodiment, the user equipment performs LBT, so it is not necessary to ensure that the time domain resource between the first time and the second time in fig. 12 belongs to the gNB COT.

As an embodiment, the uplink control information includes HARQ-ACK (acknowledgement).

As an embodiment, the uplink control Information includes CSI (Channel Status Information).

As an embodiment, the uplink control information includes a Scheduling Request (SR).

As an embodiment, the uplink control information includes a Beam Recovery Request (BRR).

Example 13

Embodiment 13 illustrates a schematic diagram that the starting time of the third time-frequency resource is after the starting time of the fourth time-frequency resource, as shown in fig. 13, where a square filled with oblique lines identifies a time-domain resource occupied by the first time-frequency resource.

In embodiment 13, the time domain resource occupied by the first time-frequency resource is in the time domain resource occupied by the third time-frequency resource and is out of the time domain resource occupied by the fourth time-frequency resource; the starting time of the third time frequency resource on the time domain is after the starting time of the fourth time frequency resource on the time domain; the cut-off time of the third time frequency resource in the time domain is after the cut-off time of the fourth time frequency resource in the time domain.

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

As an embodiment, the starting time of the time domain resource occupied by the first time-frequency resource is an ending time of the time domain resource occupied by the fourth time-frequency resource.

In the above embodiment, since the no-LBT can only be adopted in the gNB COT, the ue needs to start LBT at the deadline of the fourth time-frequency resource to determine whether the LBT can be executed (before the deadline of the third time-frequency resource).

Example 14

Embodiment 14 illustrates a schematic diagram of a third time-frequency resource and a fourth time-frequency resource in a frequency domain, as shown in fig. 14; the grid filled with cross lines identifies the frequency domain resources occupied by the third time frequency resources, and the grid filled with reverse oblique lines identifies the frequency domain resources occupied by the fourth time frequency resources.

In embodiment 14, the frequency domain resource occupied by the third time-frequency resource is orthogonal to the frequency domain resource occupied by the fourth time-frequency resource.

As an embodiment, the frequency domain resource occupied by the third time-frequency resource and the frequency domain resource occupied by the fourth time-frequency resource are respectively discrete in the frequency domain to meet a requirement of a Regulation (Regulation) on a bandwidth occupied by unlicensed spectrum communication.

As an embodiment, the third time-frequency resource and the fourth time-frequency resource respectively occupy multiple subcarrier groups, and each of the multiple subcarrier groups is composed of a positive integer of consecutive subcarriers; the plurality of subcarrier groups are sequentially present at equal intervals in the frequency domain.

Example 15

Embodiment 15 illustrates a block diagram of a processing device in a user equipment, as shown in fig. 15. In embodiment 15, the user equipment 1500 includes a first receiving module 1501 and a first transmitting module 1502.

In embodiment 15, the first receiving module 1501 receives a first signaling and a second signaling; the first signaling is used for indicating monitoring, and the second signaling is used for indicating not monitoring; the first sending module 1502 determines whether to monitor according to the first signaling and the second signaling; if the monitoring is judged not to be performed, the first transmitting module 1502 transmits the first wireless signal on the first time-frequency resource, and if the monitoring is judged to be performed, the first transmitting module 1502 abandons the wireless transmission on the first time-frequency resource and performs the first monitoring.

In embodiment 15, the first signaling and the second signaling are DCI for uplink grant, respectively.

For one embodiment, the first receiving module 1501 includes { the antenna 452, the receiver 454, and the receiving processor 456} in fig. 4.

For one embodiment, the first receiving module 1501 includes at least one of the multiple antenna receive processor 458, the controller/processor 459 of fig. 4.

For one embodiment, the first transmitting module 1502 includes the antenna 452, the transmitter 454, and the transmit processor 468 in fig. 4.

For one embodiment, the first transmit module 1502 includes at least one of the multiple antenna transmit processor 457, the controller/processor 459 of fig. 4.

Example 16

Embodiment 16 is a block diagram illustrating a configuration of a processing device in a base station apparatus, as shown in fig. 16. In embodiment 16, the base station apparatus 1600 includes a second transmitting module 1601 and a second receiving module 1602.

The second sending module 1601 sends the first signaling and the second signaling; the first signaling is used for indicating monitoring, and the second signaling is used for indicating not monitoring; the second receiving module 1602 detects the first wireless signal on the first time-frequency resource;

in embodiment 16, the first signaling and the second signaling are DCI for uplink grant, respectively.

For one embodiment, the second sending module 1601 includes the antenna 420, the transmitter 418, and the transmission processor 416 shown in fig. 4.

The second sending module 1601 includes, for one embodiment, the multi-antenna transmit processor 471 and the controller/processor 475 of fig. 4.

For one embodiment, the second receiving module 1602 includes the antenna 420, the receiver 418, and the receiving processor 470 in fig. 4.

The second receiving module 1602 includes the multi-antenna receive processor 472 and the controller/processor 475 of fig. 4, for one embodiment.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. User equipment, terminal and UE in this application include but not limited to unmanned aerial vehicle, Communication module on the unmanned aerial vehicle, remote control plane, the aircraft, small aircraft, the cell-phone, the panel computer, the notebook, vehicle-mounted Communication equipment, wireless sensor, network card, thing networking terminal, the RFID terminal, NB-IOT terminal, Machine Type Communication (MTC) terminal, eMTC (enhanced MTC) terminal, the data card, network card, vehicle-mounted Communication equipment, low-cost cell-phone, equipment such as low-cost panel computer. The base station in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, a gNB (NR node B), a TRP (Transmitter Receiver Point), and other wireless communication devices.

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

Claims

1. A method in a user equipment used for wireless communication, comprising:

judging whether to monitor according to the first signaling and the second signaling; if the monitoring is judged not to be carried out, a first wireless signal is sent on the first time-frequency resource, and if the monitoring is judged to be carried out, the wireless sending on the first time-frequency resource is abandoned and the first monitoring is carried out; the first signaling is used for indicating a third time-frequency resource, and the second signaling is used for indicating a fourth time-frequency resource; the resource occupied by the third time-frequency resource in the time domain is overlapped with the resource occupied by the fourth time-frequency resource in the time domain; the determining whether to monitor according to the first signaling and the second signaling comprises one of:

judging monitoring after the time domain resource occupied by the first signaling is behind the time domain resource occupied by the second signaling; or, the time domain resource occupied by the first signaling is judged not to be monitored before the time domain resource occupied by the second signaling;

judging that the third time frequency resource is not monitored after the starting time of the fourth time frequency resource in the time domain; or, the starting time of the third time frequency resource in the time domain is before the starting time of the fourth time frequency resource in the time domain, and the monitoring is judged;

2. The method of claim 1, comprising:

3. The method of claim 1, wherein a start time of the third time-frequency resource in the time domain is subsequent to a start time of the fourth time-frequency resource in the time domain, or wherein a start time of the third time-frequency resource in the time domain is a start time of the fourth time-frequency resource in the time domain.

4. The method of claim 1, wherein a start time of the third time-frequency resource in a time domain is prior to a start time of the fourth time-frequency resource in a time domain.

5. A method in a base station used for wireless communication, comprising:

detecting a first wireless signal on a first time-frequency resource;

wherein the first signaling and the second signaling are used by a sender of the first wireless signal to judge whether to monitor; if the first wireless signal is determined not to be monitored, the first wireless signal is transmitted on the first time-frequency resource, if the monitoring is determined, the wireless transmission on the first time-frequency resource is abandoned and the first monitoring is performed by the transmitter of the first wireless signal; the first signaling is used for indicating a third time-frequency resource, and the second signaling is used for indicating a fourth time-frequency resource; the resource occupied by the third time-frequency resource in the time domain is overlapped with the resource occupied by the fourth time-frequency resource in the time domain; the first signaling and the second signaling are used by a sender of the first wireless signal to determine whether to listen for signals including one of:

the time domain resource occupied by the first signaling is behind the time domain resource occupied by the second signaling, and the judgment result is monitoring; or, the time domain resource occupied by the first signaling is before the time domain resource occupied by the second signaling, and the judgment result is that the monitoring is not performed;

the starting time of the third time frequency resource on the time domain is after the starting time of the fourth time frequency resource on the time domain, and the judgment result is that the monitoring is not performed; or, the starting time of the third time frequency resource in the time domain is before the starting time of the fourth time frequency resource in the time domain, and the judgment result is monitoring;

the uplink transmission scheduled by the first signaling comprises uplink control information and the uplink transmission scheduled by the second signaling does not comprise the uplink control information, and the judgment result is monitoring; or the uplink transmission scheduled by the first signaling does not include uplink control information and the uplink transmission scheduled by the second signaling includes uplink control information, and the judgment result is that the monitoring is not performed.

6. The method of claim 5, comprising:

detecting a second wireless signal on a second time-frequency resource;

7. The method according to claim 5, wherein the starting time of the third time-frequency resource in time domain is after the starting time of the fourth time-frequency resource in time domain, or wherein the starting time of the third time-frequency resource in time domain is the starting time of the fourth time-frequency resource in time domain.

8. The method of claim 5, wherein a starting time of the third time-frequency resource in the time domain is before a starting time of the fourth time-frequency resource in the time domain.

9. A user device configured for wireless communication, comprising:

a first sending module: judging whether to monitor according to the first signaling and the second signaling; if the monitoring is judged not to be carried out, a first wireless signal is sent on the first time-frequency resource, and if the monitoring is judged to be carried out, the wireless sending on the first time-frequency resource is abandoned and the first monitoring is carried out; the first signaling is used for indicating a third time-frequency resource, and the second signaling is used for indicating a fourth time-frequency resource; the resource occupied by the third time-frequency resource in the time domain is overlapped with the resource occupied by the fourth time-frequency resource in the time domain; the determining whether to monitor according to the first signaling and the second signaling comprises one of:

10. The user equipment used for wireless communication according to claim 9, comprising:

11. The UE used for wireless communication according to claim 9, wherein the start time of the third time-frequency resource in the time domain is after the start time of the fourth time-frequency resource in the time domain, or wherein the start time of the third time-frequency resource in the time domain is the start time of the fourth time-frequency resource in the time domain.

12. The user equipment configured for wireless communication of claim 9, wherein a starting time of the third time-frequency resource in time domain is before a starting time of the fourth time-frequency resource in time domain.

13. A base station for wireless communication, comprising:

14. The base station used for wireless communication of claim 13, comprising:

the second receiving module detects a second wireless signal on a second time-frequency resource;

15. The base station used for wireless communication according to claim 13, wherein the starting time of the third time-frequency resource in time domain is after the starting time of the fourth time-frequency resource in time domain, or wherein the starting time of the third time-frequency resource in time domain is the starting time of the fourth time-frequency resource in time domain.

16. The base station configured for wireless communication of claim 13, wherein a starting time of the third time-frequency resource in the time domain is before a starting time of the fourth time-frequency resource in the time domain.