CN110602785B

CN110602785B - Method and device used in user equipment and base station for wireless communication

Info

Publication number: CN110602785B
Application number: CN201810707338.9A
Authority: CN
Inventors: 张晓博; 杨林
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2018-06-12
Filing date: 2018-07-02
Publication date: 2023-02-03
Anticipated expiration: 2038-07-02
Also published as: CN110602785A

Abstract

The application discloses a method and a device in user equipment, a base station used for wireless communication. As one embodiment, first information and a first target signal are received, the first information indicating a listening type; judging whether the first time-frequency resource is used for wireless transmission according to the interception type indicated by the first information; if the first time-frequency resource is used for wireless transmission, transmitting a first wireless signal with first power on the first time-frequency resource; wherein, if the listening type indicated by the first information is a first listening type, the first power cannot exceed a first maximum transmission power, and a reception quality of the first target signal is used to determine the first maximum transmission power; the first power cannot exceed a second maximum transmit power if the listening type indicated by the first information is a second listening type. The application ensures fairness and improves transmission efficiency and spectrum utilization rate.

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) uplink communication.

Background

Application scenes of a future wireless communication system are 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 (3 rd 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 (third type LBT, see 3gpp tr36.889), the transmitter performs backoff (backoff) after a certain delay period (Defer Duration), the backoff time is counted by taking a CCA (Clear Channel Assessment) time slot period as a unit, and the number of backoff time slots is obtained by the transmitter randomly selecting in a 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.

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

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

Disclosure of Invention

The above NR LAA is known that a receiver can directly switch to a transmission state without performing LBT by using a radio signal transmitted from a transmitter to occupy a resource of a null. The inventor discovers through research that: the air interface resources reserved by the wireless signals transmitted by the transmitter should be limited in space, otherwise unfairness may be caused. The inventor discovers through further research that: if LBT-free is used, the maximum transmit power of the receiver should be related to the useful power of the received radio signal because the latter determines the spatial effective range of the air interface resources reserved by the radio signal.

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 present application was originally directed to LAA communications, the methods and apparatus of the present application are also applicable to communications over licensed spectrum.

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

receiving first information and a first target signal, wherein the first information indicates an interception type;

judging whether the first time-frequency resource is used for wireless transmission according to the interception type indicated by the first information;

if the first time-frequency resource is used for wireless transmission, transmitting a first wireless signal with first power on the first time-frequency resource; otherwise, abandoning the wireless transmission on the first time-frequency resource;

wherein, if the listening type indicated by the first information is a first listening type, the first power cannot exceed a first maximum transmission power, and a reception quality of the first target signal is used to determine the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power.

As an example, excessive transmit power of the first wireless signal may cause interference to a target receiver-the first target signal fails to prevent wireless transmission by a target transmitter paired with the target receiver; in the above method, the maximum value of the first power is related to the received power of the first target signal at the ue side, so that the interference of the first radio signal to the target receiver can be reduced, and unfairness caused by LBT-free can be avoided.

Specifically, according to an aspect of the present invention, the method includes:

receiving second information;

wherein the second information indicates a first offset used to determine the first maximum transmission power.

As an embodiment, the above method allows the serving cell to flexibly adjust the first maximum transmit power, balancing fairness and transmit opportunity.

As an embodiment, the first offset is related to a first ratio, and the first ratio is a ratio between total transmission power on a multicarrier symbol occupied by the first target signal and transmission power of the first target signal.

In the above embodiment, the serving cell can flexibly set the transmission power of the first target signal, thereby improving scheduling flexibility.

As an embodiment, the first offset divided by 10 is equal to the first reference value, and the first reference value to the power of 10 is equal to the first ratio.

As one example, the first offset amount increases as the first ratio increases.

receiving third information;

wherein the third information indicates a first coefficient, the first maximum transmission power and the reception quality of the first target signal are linearly related, and the first coefficient is a linear correlation coefficient of the first maximum transmission power to the reception quality of the first target signal.

Specifically, according to one aspect of the present invention, if the listening type indicated by the first information is the first listening type, it is determined that the first time-frequency resource is used for wireless transmission.

As an embodiment, no corresponding LBT needs to be performed before transmitting the first wireless signal.

Specifically, according to an aspect of the present invention, if the listening type indicated by the first information is the second listening type, the method includes:

performing a first channel monitoring to determine whether the first time-frequency resource is used for wireless transmission.

receiving Q signaling;

any one of the Q signalings indicates a listening type and a power offset; for any one of the Q signaling, if the listening type indicated by the any signaling is the same as the listening type indicated by the first information, the first power is related to the indicated power offset, otherwise the first power is not related to the indicated power offset.

As an embodiment, in the above method, the first listening type and the second listening type respectively correspond to different power control processes; the method can more effectively control the sending power of the user equipment, improve the transmission efficiency and reduce the interference.

Specifically, according to an aspect of the present invention, the first information belongs to first downlink control information, and the first downlink control information indicates the first time-frequency resource.

Specifically, according to one aspect of the present invention, the method comprises:

receiving fourth information;

wherein the first target signal occupies a first set of resource elements, the fourth information being used to indicate the first set of resource elements.

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

sending first information and a first target signal, wherein the first information indicates an interception type;

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

wherein the listening type indicated by the first information is used to determine whether a first time-frequency resource is used for wireless transmission; if the first time-frequency resource is used for wireless transmission, the first wireless signal is transmitted at a first power on the first time-frequency resource; otherwise, the wireless transmission on the first time-frequency resource is abandoned, if the interception type indicated by the first information is a first interception type, the first power cannot exceed a first maximum transmission power, and the reception quality of the first target signal is used for determining the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power.

sending the second information;

wherein the second information indicates a first offset amount used to determine the first maximum transmission power.

sending third information;

Specifically, according to an aspect of the present invention, if the listening type indicated by the first information is the second listening type, a first channel monitoring is performed by a sender of the first wireless signal to determine whether the first time-frequency resource is used for wireless transmission.

sending Q signaling;

wherein any one of the Q signaling indicates a listening type and a power offset; for any of the Q signaling, if the listening type indicated by the any signaling is the same as the listening type indicated by the first information, the first power is related to the indicated power offset, otherwise the first power is not related to the indicated power offset.

sending fourth information;

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

a first receiving module: receiving first information and a first target signal, wherein the first information indicates an interception type;

a first judgment module: judging whether the first time-frequency resource is used for wireless transmission according to the interception type indicated by the first information;

a first sending module: if the first time-frequency resource is used for wireless transmission, transmitting a first wireless signal with first power on the first time-frequency resource; otherwise, abandoning the wireless transmission on the first time-frequency resource;

As one embodiment, the user equipment used for wireless communication is characterized in that the first receiving module receives second information; wherein the second information indicates a first offset used to determine the first maximum transmission power.

As one embodiment, the user equipment used for wireless communication is characterized in that the first receiving module receives third information; wherein the third information indicates a first coefficient, the first maximum transmission power and the reception quality of the first target signal are linearly related, and the first coefficient is a linear correlation coefficient of the first maximum transmission power to the reception quality of the first target signal.

As one embodiment, the user equipment used for wireless communication is characterized in that the first receiving module receives fourth information; wherein the first target signal occupies a first set of resource elements, the fourth information being used to indicate the first set of resource elements.

As an embodiment, the user equipment used for wireless communication is characterized in that if the listening type indicated by the first information is the first listening type, it is determined that the user equipment is used for wireless transmission on the first time-frequency resource.

As an embodiment, the user equipment used for wireless communication is characterized in that, if the listening type indicated by the first information is the second listening type, the first determining module performs first channel monitoring to determine whether the first time-frequency resource is used for wireless transmission.

As one embodiment, the user equipment used for wireless communication is characterized in that the first receiving module receives Q signaling; any one of the Q signalings indicates a listening type and a power offset; for any of the Q signaling, if the listening type indicated by the any signaling is the same as the listening type indicated by the first information, the first power is related to the indicated power offset, otherwise the first power is not related to the indicated power offset.

As an embodiment, the user equipment used for wireless communication is characterized in that the first information belongs to first downlink control information, and the first downlink control information indicates the first time-frequency resource.

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

a second sending module: sending first information and a first target signal, wherein the first information indicates an interception type;

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

wherein the listening type indicated by the first information is used to determine whether a first time-frequency resource is used for wireless transmission; if the first time-frequency resource is used for wireless transmission, the first wireless signal is transmitted at a first power on the first time-frequency resource; otherwise, the wireless transmission on the first time-frequency resource is abandoned, if the listening type indicated by the first information is a first listening type, the first power cannot exceed a first maximum transmission power, and the reception quality of the first target signal is used for determining the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the second transmitting module transmits the second information; wherein the second information indicates a first offset used to determine the first maximum transmission power.

As an embodiment, the base station apparatus used for wireless communication described above is characterized in that the second transmission module transmits third information; wherein the third information indicates a first coefficient, the first maximum transmission power and the reception quality of the first target signal are linearly related, and the first coefficient is a linear correlation coefficient of the first maximum transmission power to the reception quality of the first target signal.

As one embodiment, the base station apparatus used for wireless communication is characterized in that the second transmission module transmits fourth information; wherein the first target signal occupies a first set of resource elements, the fourth information being used to indicate the first set of resource elements.

As an embodiment, the above base station apparatus for wireless communication is characterized in that if the listening type indicated by the first information is the first listening type, it is determined that the first time-frequency resource is used for wireless transmission.

As an embodiment, the above-mentioned base station apparatus for wireless communication is characterized in that, if the listening type indicated by the first information is the second listening type, first channel monitoring is performed by a sender of the first wireless signal to determine whether the first time-frequency resource is used for wireless transmission.

As an embodiment, the base station device used for wireless communication is characterized in that the second transmitting module transmits Q pieces of signaling; any one of the Q signalings indicates a listening type and a power offset; for any one of the Q signaling, if the listening type indicated by the any signaling is the same as the listening type indicated by the first information, the first power is related to the indicated power offset, otherwise the first power is not related to the indicated power offset.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the first information belongs to first downlink control information indicating the first time-frequency resource.

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

ensuring fairness of resource occupation;

reducing interference;

flexible control of transmit power, improved transmission efficiency.

Drawings

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

fig. 1 shows a process flow diagram at the user equipment side 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 wireless transmission according to one embodiment of the present application;

FIG. 6 shows a schematic diagram of power control according to an embodiment of the present application;

fig. 7 shows a flowchart for determining whether a first time frequency resource is used for wireless transmission according to a listening type indicated by first information according to an embodiment of the present application;

FIG. 8 shows a flow diagram of a single transmitted first channel monitoring according to one embodiment of the present application;

FIG. 9 shows a flow diagram of a multiple transmission first channel monitoring according to one embodiment of the present application;

FIG. 10 shows a schematic diagram of Q signaling according to one embodiment of the present application;

figure 11 shows a schematic diagram of first signaling according to an embodiment of the present application;

fig. 12 shows a schematic diagram of resource elements occupied by a first target signal within one multicarrier symbol according to an embodiment of the application;

fig. 13 shows a diagram of a gbb channel occupancy time according to an embodiment of the application;

fig. 14 shows a block diagram of a processing means in a user equipment according to an embodiment of the application;

fig. 15 shows a block diagram of a processing means in a base station apparatus according to an embodiment of the present application;

example 1

Embodiment 1 illustrates a processing flow diagram on the user equipment side, as shown in fig. 1.

In embodiment 1, a user equipment first receives first information and a first target signal, wherein the first information indicates an interception type; then judging whether the first time-frequency resource is used for wireless transmission according to the interception type indicated by the first information; if the first time-frequency resource is used for wireless transmission, transmitting a first wireless signal with first power on the first time-frequency resource; otherwise, abandoning the wireless transmission on the first time-frequency resource;

in embodiment 1, if the listening type indicated by the first information is a first listening type, the first power cannot exceed a first maximum transmission power, and the reception quality of the first target signal is used to determine the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power.

As an embodiment, the first information belongs to a first signaling, and the act of receiving the first information includes: receiving a first signaling; the first signaling is a DCI (downlink control information).

As an embodiment, if the listening type indicated by the first information is a first listening type, the first power is a smaller value between a first ideal power and the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power is a smaller value between a first ideal power and the second maximum transmission power; the first ideal Power is related to at least one of a desired received Power, a number of subcarriers occupied by the first wireless signal, a downlink path loss, an accumulated Power offset indicated by a positive integer number of TPC (transmit Power Control) commands (Command), and whether UCI (Uplink Control Information) is included in the first wireless signal.

As an embodiment, the first ideal power is linearly related to the expected received power, a linear correlation coefficient of the first ideal power to the expected received power is 1, and the expected received power is configured by higher layer signaling.

As an embodiment, the first ideal power is linearly related to the downlink path loss, and a linear correlation coefficient of the first ideal power to the desired received power is configured by higher layer signaling.

As an embodiment, the first ideal power is linearly related to the accumulated power offset indicated by the positive integer number of TPC commands, and a linear correlation coefficient of the first ideal power to the accumulated power offset indicated by the positive integer number of TPC commands is 1, where the positive integer number of TPC commands are respectively carried by the positive integer number of DCI.

As an embodiment, the first ideal power is linearly related to a first power component, a linear correlation coefficient of the first ideal power to the first power component is 1, and the first power component is related to the number of subcarriers occupied by the first wireless signal.

As an embodiment, the first ideal power and the second power component are linearly related, a linear correlation coefficient of the first ideal power to the second power component is 1, and the second power component is related to whether the first wireless signal carries UCI.

As an example of the way in which the device may be used,

the first coefficient is an integer power of 2, the second coefficient is configured by higher layer signaling, the positive integer of the positive integer number of TPC commands is K, the P _i Is the power offset indicated by the ith TPC commandAmount (v).

As an example of the way in which the device may be used,

the first coefficient is an integer power of 2, the second coefficient is configured by higher layer signaling, the positive integer of the positive integer number of TPC commands is K, the P is _i Is the power offset indicated by the ith TPC command, the Δ _TF,f,c (i is a parameter relating to the content carried by the first radio signal-the specific explanation refers to Section 7 (Section 7) of the 3GPP standard TR 38.213.

As an embodiment, the first power, the first maximum transmit power, and the second maximum transmit power are all in dBm (millidecibels).

As one embodiment, the first power, the first maximum transmission power, and the second maximum transmission power are all in units of mW (milliwatts).

As an embodiment, the frequency domain resource occupied by the first wireless signal is deployed with unlicensed spectrum.

As an embodiment, the frequency domain resource occupied by the first target signal is deployed with unlicensed spectrum.

As an embodiment, the frequency domain resource occupied by the first wireless signal and the frequency domain resource occupied by the first target signal belong to the same carrier.

As an embodiment, the frequency domain resource occupied by the first wireless signal and the frequency domain resource occupied by the first target signal belong to the same BWP (BandWidth Part).

As an embodiment, the first maximum transmission power and the reception quality of the first target signal are linearly related.

As an embodiment, a linear correlation coefficient of the first maximum transmission power to the reception quality of the first target signal is 1.

As an embodiment, a linear correlation coefficient of the first maximum transmission power to the reception quality of the first target signal is greater than 1.

As one embodiment, the first information is broadcast.

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

As an embodiment, the first information is dynamically configured.

As an embodiment, the first information belongs to a first signaling, and the first signaling is a DCI (Downlink Control information).

As an embodiment, the first information is a field in the first signaling.

As an embodiment, the first signaling is identified by an identity of the user equipment.

As an embodiment, the search space to which the first signaling belongs is indicated by an identity of the user equipment.

As an embodiment, CRC (Cyclic Redundancy Check) bits corresponding to the first signaling are scrambled by the identity of the user equipment, added to information bits of the first signaling, and used together with the information bits of the first signaling as an input of channel coding.

As an embodiment, the identity of the user equipment includes an RNTI (Radio Network Temporary identity) assigned to the user equipment.

As an embodiment, the identity of the user equipment comprises 16 bits.

As an embodiment, the first target signal occupies a first RE (Resource Element) set, and the first RE set is composed of a plurality of REs.

As one embodiment, the reception quality of the first target signal comprises an average of received energies of the first target signal over each RE of the first set of REs.

As an embodiment, the reception quality of the first target Signal includes RSRP (Reference Signal Receiving Power) of the first target Signal.

As one embodiment, the reception quality of the first target Signal includes a measured SINR (Signal to Interference and Noise Ratio) based on the first target Signal.

As one embodiment, the reception Quality of the first target signal includes a Channel Quality Indicator (CQI) based on a measurement for the first target signal.

As an embodiment, there is a one-to-one mapping relationship between the first maximum transmission power and the reception quality of the first target signal.

As an embodiment, the reception quality of the first target signal has a unit of dBm (decibels).

As one embodiment, the reception quality of the first target signal has a unit of mW (milliwatt).

As an embodiment, the first listening type refers to: LBT need not be performed.

As an embodiment, the second listening type refers to: LBT needs to be performed.

As an embodiment, the second listening type includes multiple types of LBTs, and the first information indicates any one of the multiple types of LBTs, that is, means that the first information indicates the second listening type.

As one example, the plurality of types of LBT includes type 2 (Category 2) LBT.

As one example, the plurality of types of LBT includes type 4 (Category 4) LBT.

As an embodiment, the multiple types of LBTs include at least one type of single-transmission (one shot) LBT and multiple-transmission (multiple shot) LBT.

As one embodiment, the first target Signal includes a CSI-RS (Channel state Information Reference Signal).

As an embodiment, the first target Signal comprises a DMRS (DeModulation Reference Signal).

As one embodiment, the first target Signal includes a PTRS (Phase Tracking Reference Signal).

As an embodiment, DCI to which the first information belongs is used to indicate the first RE set.

As an embodiment, the time domain resource occupied by the first information and the time domain resource occupied by the first wireless signal belong to the same gNB COT.

As an embodiment, the first information is transmitted on a PDCCH (Physical Downlink Control CHannel).

As an embodiment, the first information is transmitted on a short Physical Downlink Control CHannel (short Physical Downlink Control CHannel) of the sPDCCH.

As an embodiment, the first wireless signal is transmitted on a PUSCH (Physical Uplink Shared CHannel).

As an embodiment, the transmission CHannel corresponding to the first wireless signal is an UL-SCH (UpLink Shared CHannel).

In one embodiment, the first time-frequency resource includes a plurality of REs.

As one embodiment, the first time-frequency resource includes a plurality of REs allocated to a PUSCH and a plurality of REs allocated to a DMRS.

As an embodiment, the RE occupies one multicarrier symbol in the time domain and one subcarrier in the frequency 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 an embodiment, the first time-frequency sub-resource and the second time-frequency sub-resource belong to the same carrier in the frequency domain.

As an embodiment, the first information comprises 1 bit, the 1 bit indicating the first listening type or the second listening type.

As an embodiment, the first information includes a number of bits greater than 0, the first information indicates a selection from X +1 of { first listening type, LBT of X type }, the X being a positive integer greater than 1; any one type of LBT among the X types of LBTs belongs to the second listening type.

As one example, the X types of LBTs include type 2 (Category 2) LBTs.

As one example, the X types of LBTs include type 4 (Category 4) LBTs.

As an embodiment, the X types of LBTs include at least one single-transmission (one shot) LBT and one multiple-transmission (multiple shot) LBT.

As an embodiment, the second maximum transmit power does not exceed 23dBm.

As an embodiment, the second maximum transmit power does not exceed 30dBm.

As an embodiment, the second maximum transmit power does not exceed 33dBm.

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 services 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 that provide 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 gnbs 203 may be connected to other gnbs 204 via X2 interfaces (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 (transmit receive point), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the 5G-CN/EPC210. 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 terrestrial vehicle, an automobile, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the 5G-CN/EPC210 through an S1 interface. The 5G-CN/EPC210 includes an MME211, other MMEs 214, an S-GW (serving 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/EPC210. 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-GW213. 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 the present application.

As an embodiment, the gNB203 corresponds to a base station in the present application.

As a sub-embodiment, the UE201 supports wireless communication for data transmission over an unlicensed spectrum.

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

As a sub-embodiment, the UE201 supports power control.

As a sub-embodiment, the gNB203 supports power control.

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 PHY301. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the UE and the gNB through PHY301. 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 there is no header compression function for the control plane. The Control plane also includes a RRC (Radio Resource Control) sublayer 306 in layer 3 (L3 layer). The RRC sublayer 306 is responsible for obtaining radio resources (i.e., radio bearers) and 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 apparatus in the present application.

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

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

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

As an embodiment, the Q signaling in this application are generated in the PHY301.

As an embodiment, the physical layer signaling 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 MAC sublayer 302.

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

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

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.

The 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 the L2 layer. 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 analog 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 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 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 received analog precoded/beamformed baseband multicarrier symbol stream 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 functions of the L2 layer. The controller/processor 459 may be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In the 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 a 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 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 that is provided 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 functions of the L1 layer. The 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; receiving first information and a first target signal, wherein the first information indicates an interception type; judging whether the first time-frequency resource is used for wireless transmission according to the interception type indicated by the first information; if the first time-frequency resource is used for wireless transmission, transmitting a first wireless signal with first power on the first time-frequency resource; otherwise, abandoning the wireless transmission on the first time-frequency resource; wherein, if the listening type indicated by the first information is a first listening type, the first power cannot exceed a first maximum transmission power, and a reception quality of the first target signal is used to determine the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power.

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 first information and a first target signal, wherein the first information indicates an interception type; judging whether the first time-frequency resource is used for wireless transmission according to the interception type indicated by the first information; if the first time-frequency resource is used for wireless transmission, transmitting a first wireless signal with first power on the first time-frequency resource; otherwise, abandoning the wireless transmission on the first time-frequency resource; wherein, if the listening type indicated by the first information is a first listening type, the first power cannot exceed a first maximum transmission power, and a reception quality of the first target signal is used to determine the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power.

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 first information and a first target signal, wherein the first information indicates an interception type; monitoring a first wireless signal on a first time-frequency resource; wherein the listening type indicated by the first information is used to determine whether a first time-frequency resource is used for wireless transmission; if the first wireless signal is judged to be used for wireless transmission on the first time-frequency resource, the first wireless signal is transmitted on the first time-frequency resource with first power; otherwise, the wireless transmission on the first time-frequency resource is abandoned, if the interception type indicated by the first information is a first interception type, the first power cannot exceed a first maximum transmission power, and the reception quality of the first target signal is used for determining the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power.

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 first information and a first target signal, wherein the first information indicates an interception type; monitoring a first wireless signal on a first time-frequency resource; wherein the listening type indicated by the first information is used to determine whether a first time-frequency resource is used for wireless transmission; if the first time-frequency resource is used for wireless transmission, the first wireless signal is transmitted at a first power on the first time-frequency resource; otherwise, the wireless transmission on the first time-frequency resource is abandoned, if the interception type indicated by the first information is a first interception type, the first power cannot exceed a first maximum transmission power, and the reception quality of the first target signal is used for determining the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power.

As an embodiment, the UE450 corresponds to a user equipment in the present application.

As an embodiment, the gNB410 corresponds to a base station in the present application.

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

As an example, { the antenna 452, the receiver 454, the reception processor 456} is used to receive the first target signal in this application; { the antenna 420, the transmitter 418, the transmit processor 416} is used to transmit the first target signal in this application.

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

For one embodiment, the antenna 452, the receiver 454, and the receive processor 456 are used to receive the Q signaling messages; { the antenna 420, the transmitter 418, the transmit processor 416} is used to send the Q signaling in this application.

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

As one embodiment, at least one of the multiple antenna receive processor 458, the controller/processor 459 is configured to receive the first target signal in this application; { the multi-antenna transmit processor 471, the controller/processor 475}, at least one of which is used to transmit the first target signal in this application.

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

As an example, at least one of the multiple antenna receive processor 458, the controller/processor 459 is configured to receive the Q signaling messages in the present application; { the multi-antenna transmit processor 471, the controller/processor 475}, at least one of which is used to send the Q signaling in this 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 an embodiment, at least one of the multiple antenna receive processor 472, the controller/processor 475 is used for receiving the first wireless signal in the present application; { the multi-antenna transmission processor 457, the controller/processor 459} is used for transmitting the first wireless signal in this application.

For one embodiment, { the antenna 452, the receiver 454, the receive processor 456} are used to determine whether a first time-frequency resource is used for wireless transmission.

For one embodiment, at least one of the multiple antenna receive processor 458, the controller/processor 459 is configured to determine whether the first time/frequency resource is used for wireless transmission.

Although fig. 4 is intended to describe NR nodes and UE nodes, fig. 4 is also applicable to two terminals in D2D communication, as long as the UE450 and the gNB410 are regarded as two UEs and the functions specific to the base station in the gNB410, such as radio resource allocation and communication with the core network, are deleted.

Example 5

Embodiment 5 illustrates a flow chart of wireless transmission, as shown in fig. 5, in which the steps included in block F1 are optional. In fig. 5, the base station N1 is a serving cell maintenance base station for the user equipment U2.

For N1, second signaling is sent in step S11; transmitting a first signaling and a first target signal in step S12; in step S13, a first wireless signal is received on a first time/frequency resource.

For U2, receiving a second signaling in step S21; receiving a first signaling and a first target signal in step S22; judging whether the first time-frequency resource is used for wireless transmission according to the interception type indicated by the first information in step S23; if so, the first wireless signal is transmitted on the first time-frequency resource in step S24, and if not, it is ended.

In embodiment 5, the first signaling includes first information, and if the listening type indicated by the first information is a first listening type, the first power cannot exceed a first maximum transmission power, and the reception quality of the first target signal is used by the UE U2 to determine the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power.

As an embodiment, the first signaling comprises second information; the second information indicates a first offset, which is used to determine the first maximum transmission power.

As an embodiment, the second signaling is higher layer signaling, the second signaling comprising second information; the second information indicates a first offset amount used to determine the first maximum transmission power.

As a sub-embodiment of any one of the two embodiments, a unit of the first power, the first maximum transmission power, the second maximum transmission power, and the reception quality of the first target signal is dBm (millidecibels).

As an embodiment, the first signaling includes third information indicating a first coefficient, the first maximum transmission power and the reception quality of the first target signal are linearly related, and the first coefficient is a linear correlation coefficient of the first maximum transmission power to the reception quality of the first target signal.

As an embodiment, the second signaling is higher layer signaling, the second signaling includes third information indicating a first coefficient, the first maximum transmission power and the reception quality of the first target signal are linearly related, and the first coefficient is a linear correlation coefficient of the first maximum transmission power to the reception quality of the first target signal.

As a sub-embodiment of any one of the two embodiments above, a unit of the first power, the first maximum transmission power, the second maximum transmission power, and the reception quality of the first target signal is mW (milliwatt).

As one embodiment, the first signaling indicates the first time-frequency resource.

As one embodiment, the first signaling is Grant DCI of the first wireless signal.

As one embodiment, the first coefficient is not less than 0 and not more than 1.

As an embodiment, the first coefficient is not less than 1.

As an embodiment, the first coefficient relates to a transmit beamforming vector corresponding to the first wireless signal on the U2 side.

As an embodiment, the first coefficient relates to a receive beamforming vector corresponding to the first target signal on the U2 side.

As an embodiment, the first signaling includes scheduling information of the first wireless signal, where the scheduling information includes at least one of { occupied time domain resource, occupied frequency domain resource, MCS (Modulation and Coding Status), HARQ (Hybrid Automatic retransmission ReQuest) Process Number (Process Number), RV (Redundancy Version), NDI (New Data Indicator) }.

As an embodiment, the first signaling is an UpLink Grant (UpLink Grant) DCI, and the first wireless signal is transmitted on a PUSCH.

As an embodiment, the first signaling is DCI of one LTE DCI format 0.

As an embodiment, the first signaling is DCI of one LTE DCI format 4.

As an embodiment, the first signaling is a DCI of one NR DCI format 0_0.

As an embodiment, the first signaling is a DCI of one NR DCI format 0_1.

As an embodiment, the first maximum transmit power and the first offset are linearly related.

As an embodiment, a linear correlation coefficient of the first maximum transmission power to the first offset is 1.

As an embodiment, the first maximum transmit power is equal to a sum of RSRP of the first target signal plus the first offset.

As an embodiment, the second signaling is RRC signaling.

As an embodiment, the second signaling is broadcast.

As an embodiment, the first signaling includes fourth information; the first target signal occupies a first set of resource elements, and the fourth information is used to indicate the first set of resource elements.

As an embodiment, the second signaling includes fourth information, and the second signaling is higher layer signaling; the first target signal occupies a first set of resource elements, and the fourth information is used to indicate the first set of resource elements.

Example 6

Embodiment 6 illustrates a schematic diagram of power control, as shown in fig. 6.

In embodiment 6, the base station 50 is a maintenance base station of a first cell which is a serving cell of the UE 80; the first cell sends a first target signal; if the UE80 performs uplink transmission based on LBT-less, the corresponding maximum transmission power is the first maximum transmission power; if the UE80 performs uplink transmission based on LBT, the corresponding maximum transmission power is the second maximum transmission power.

The dashed circle 20 is a space region that can be occupied by the UE80 when transmitting the wireless signal with the first maximum transmission power, that is, when the receiver inside the dashed circle 20 performs LBT, the wireless signal transmitted by the UE80 with the first maximum transmission power may cause the receiver inside the dashed circle 20 to consider the channel to be occupied, but may not cause the receiver outside the dashed circle 20 to consider the channel to be occupied; the dashed circle 30 is a space area that can be occupied by the UE80 when transmitting the wireless signal with the second maximum transmission power, that is, when the receiver inside the dashed circle 30 performs LBT, the wireless signal transmitted by the UE80 with the second maximum transmission power may cause the receiver inside the dashed circle 30 to consider the channel occupied, but may not cause the receiver outside the dashed circle 30 to consider the channel occupied.

The received power of the first target signal at the UE80 is a first reference power, and the spatial region reserved for the UE80 by the first cell for transmission is related to the first reference power; in the spatial region reserved for the UE80 by the first cell, the UE80 may perform uplink transmission based on LBT-free; thus, the first maximum transmit power is related to the first reference power.

As an embodiment, the dashed circle 20 belongs to the space region reserved for the UE80 by the transmission of the first cell, and the distance from the ending time of the transmission of the first cell to the starting time of the transmission of the UE80 is not more than 15us (microseconds).

In the above embodiment, the transmission of the UE80 may not Block (Block) the transmission of the first cell from a transmitter outside the spatial region reserved for the UE80, so as to ensure fairness among multiple Radio Access technologies (Radio Access technologies).

As an embodiment, the second maximum transmission power is P _CMAX,f,c (i) Where f, c, i are respectively the carrier occupied by the first wireless signal, the serving cell corresponding to the first wireless signal, and the PUSCH transmission interval occupied by the first wireless signal. Detailed description of P _CMAX,f,c (i) Please refer to 3gpp ts38.213 Section 7 (Section 7).

Example 7

Embodiment 7 illustrates a flowchart for determining whether the first time-frequency resource is used for wireless transmission according to the listening type indicated by the first information, as shown in fig. 7. The steps in fig. 7 are performed in the UE.

In step S102, the UE determines a listening type indicated by the first information; if the listening type indicated by the first information is a first listening type, the UE determines in step S103 that the first time-frequency resource is used for wireless transmission, and transmits a first wireless signal on the first time-frequency resource; if the listening type indicated by the first information is a second listening type, the UE performs a first channel measurement in step S104 to determine whether a channel is idle; if yes, jumping to the step S103, if no, ending.

In embodiment 7, the transmission power of the first wireless signal is a first power, and if the listening type indicated by the first information is a first listening type, the first power cannot exceed a first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power.

As one embodiment, the determining that the first time-frequency resource is used for wireless transmission comprises: generating the first wireless signal.

Example 8

Embodiment 8 illustrates a flow chart of single-transmission first channel monitoring, as shown in fig. 8.

In step S1102, the receiver 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, proceeding to step S1104 to consider the channel idle; if not, proceed to step S1105 to consider the channel as not idle.

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

As one embodiment, the delay period is no more than 25 microseconds in duration.

As one embodiment, the delay period is no less than 16 microseconds in duration.

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 time slot periods in the delay period is no 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 time 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 time slot period.

As one embodiment, the first wireless signal is transmitted on the target frequency band.

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 downstream signaling).

As an embodiment, the specific threshold is related to a second maximum transmission power.

Example 9

Embodiment 9 illustrates a flow chart of multi-transmission first channel monitoring, as shown in fig. 9.

In step S2102, the receiver performs energy detection within one delay period (defer duration) of the target frequency band; in step S2103, it is determined whether all the time slot periods within the delay period are idle, and if yes, the process proceeds to step S2104, where the channel is considered idle; if not, proceed to step S2105 to perform energy detection within one delay period of the target frequency band; in step S2106, determining whether all the time slot periods within the one delay period are idle, if yes, 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 within one additional time 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.

In embodiment 9, if the step S2104 is not performed before the start time of the first time-frequency resource, the channel is considered not to be idle.

Example 10

Embodiment 10 illustrates a schematic diagram of Q signaling, as shown in fig. 10.

In embodiment 10, the ue receives Q signaling, i.e. signaling #1, signaling #2, \8230, and signaling # Q in fig. 10, in sequence according to the time sequence; the user equipment receives a first signaling after receiving the Q signaling, wherein the first signaling comprises first information and scheduling information of a first wireless signal, and the transmission power of the first wireless signal is first power; any one of the Q signaling indicates a listening type and a power offset; for any of the Q signaling, if the listening type indicated by the any signaling is the same as the listening type indicated by the first information, the first power is related to the indicated power offset, otherwise the first power is not related to the indicated power offset.

As an embodiment, the Q pieces of signaling are used for scheduling an uplink grant DCI in a target frequency band.

As an embodiment, the first signaling indicates a power offset, and the first power is related to the power offset indicated by the first signaling.

As an embodiment, the Q signaling respectively comprise Q TPC commands, the Q TPC commands respectively indicating Q power offsets.

As an embodiment, between the signaling #1 and the first signaling, the user equipment does not receive a command to reset (reset) TPC command accumulation (accumulation).

Example 11

Embodiment 11 illustrates a schematic diagram of first signaling, as shown in fig. 11.

In embodiment 11, the first signaling includes a first domain, a second domain, and a third domain; the first field in the first signaling indicates first information, and the second field in the first signaling indicates scheduling information of a first wireless signal; the transmission power of the first wireless signal is a first power.

In embodiment 11, if the listening type indicated by the first information is a first listening type, the first power cannot exceed a first maximum transmission power, and the reception quality of a first target signal is used to determine the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power.

As an embodiment, the third field in the first signaling is a TPC command.

As an embodiment, the third field in the first signaling indicates a first set of resource elements from among L sets of resource elements, and the first target signal occupies the first set of resource elements; the L sets of resource elements are configured by higher layer signaling, L being a positive integer greater than 1.

As an embodiment, the fourth information in the present application includes the third field and the higher layer signaling in the first signaling.

Example 12

Embodiment 12 illustrates a schematic diagram of resource elements occupied by a first target signal within one multicarrier symbol, as shown in fig. 12.

In fig. 12 (a), the first target signal occupies one subcarrier at equal intervals every 4 consecutive subcarriers in one multicarrier symbol.

In fig. 12 (b), the first target signal occupies two subcarriers every 12 consecutive subcarriers at equal intervals in one multicarrier symbol.

For one embodiment, the first target signal includes a CSI-RS.

As an embodiment, the pattern (i.e. occupied resource elements) of the first target signal within one multicarrier symbol is one of P patterns, where P is a positive integer greater than 1, and two patterns of the P patterns are fig. 12 (a) and fig. 12 (b), respectively.

As a sub-embodiment of the above embodiment, the first signaling indicates a pattern of said first target signal within one multicarrier symbol from said P patterns.

Example 13

Embodiment 13 illustrates a schematic diagram of the gNB channel occupancy time, as shown in fig. 13.

In embodiment 13, a time domain resource occupied by the first signaling, a time domain resource occupied by the first target signal, and a time domain resource occupied by the first wireless signal all belong to a gbb channel occupation time; the time domain resource occupied by the first signaling and the time domain resource occupied by the first target signal are both allocated to downlink transmission, and the time domain resource occupied by the first wireless signal is allocated to uplink transmission; the initial transmission time of the first wireless signal is a switching point from downlink to uplink.

In embodiment 13, the serving cell can ensure that downlink transmission (i.e. reserving a radio channel for the UE) is maintained until the downlink-to-uplink switching point when transmitting the first signaling. On the contrary, if neither the time domain resource occupied by the first signaling nor the time domain resource occupied by the first wireless signal belong to the time occupied by one gNB channel, the serving cell cannot ensure that the downlink transmission is maintained until the downlink-to-uplink switching point (the serving cell needs to perform a new LBT and may not pass) when transmitting the first signaling.

Example 14

Embodiment 14 is a block diagram illustrating a configuration of a processing device in a user equipment, as shown in fig. 14. In the embodiment 14, the user equipment 1400 includes a first receiving module 1401, a first determining module 1402 and a first sending module 1403.

In embodiment 14, a first receiving module 1401 receives a first signaling and a first target signal, wherein the first signaling includes first information, and the first information indicates a listening type; the first judging module 1402 judges whether the first time-frequency resource is used for wireless transmission according to the interception type indicated by the first information; the first transmitting module 1403 transmits a first wireless signal with a first power on a first time-frequency resource if it is determined that the first time-frequency resource is used for wireless transmission; otherwise, the first transmitting module 1403 gives up the wireless transmission on the first time-frequency resource;

in embodiment 14, the first signaling is a DCI, and if the listening type indicated by the first information is a first listening type, the first power cannot exceed a first maximum transmission power, and the reception quality of the first target signal is used to determine the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power.

As an embodiment, the first receiving module 1401 receives second information; wherein the second information indicates a first offset amount used to determine the first maximum transmission power.

As an embodiment, the first receiving module 1401 receives a third information; wherein the third information indicates a first coefficient, the first maximum transmission power and the reception quality of the first target signal are linearly related, and the first coefficient is a linear correlation coefficient of the first maximum transmission power to the reception quality of the first target signal.

For one embodiment, the first receiving module 1401 includes { the antenna 452, the receiver 454, and the receiving processor 456} in fig. 4.

For one embodiment, the first receiving module 1401 comprises at least one of the multiple antenna receive processor 458, the controller/processor 459 of fig. 4.

For one embodiment, the first determining module 1402 includes { the antenna 452, the receiver 454, the receiving processor 456} in fig. 4.

For one embodiment, the first determining module 1402 includes the multi-antenna receive processor 458 of fig. 4.

For one embodiment, the first sending module 1403 includes { the antenna 452, the transmitter 454, the transmit processor 468} in fig. 4.

For one embodiment, the first sending module 1403 includes at least one of the multiple antenna transmit processor 457, the controller/processor 459 of fig. 4.

Example 15

Embodiment 15 illustrates a block diagram of a processing device in a base station apparatus, as shown in fig. 15. In embodiment 15, the base station apparatus 1500 includes a second transmitting module 1501 and a second receiving module 1502.

In embodiment 15, the second sending module 1501 sends first information and a first target signal, where the first information indicates a listening type; the second receiving module 1502 monitors the first wireless signal on the first time-frequency resource;

in embodiment 15, the listening type indicated by the first information is used to determine whether a first time-frequency resource is used for wireless transmission; if the first time-frequency resource is used for wireless transmission, the first wireless signal is transmitted at a first power on the first time-frequency resource; otherwise, the wireless transmission on the first time-frequency resource is abandoned, if the listening type indicated by the first information is a first listening type, the first power cannot exceed a first maximum transmission power, and the reception quality of the first target signal is used for determining the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power.

As an embodiment, the first information comprises 1 bit, the 1 bit indicating one from both no LBT and single transmission LBT.

As an embodiment, the first information includes a plurality of bits indicating one from among no LBT, single-transmission LBT, and multiple-transmission LBT; the listening type indicated by the first information is a first listening type if the plurality of bits indicate no LBT, otherwise the listening type indicated by the first information is a second listening type.

As an embodiment, the first information comprises a plurality of bits indicating one from among no LBT, single-transmission LBT, first-type multi-transmission LBT, and second-type multi-transmission LBT; the listening type indicated by the first information is a first listening type if the plurality of bits indicate no LBT, otherwise the listening type indicated by the first information is a second listening type.

For one embodiment, the second sending module 1501 includes the antenna 420, the transmitter 418, and the transmission processor 416 shown in fig. 4.

For one embodiment, the second sending module 1501 includes the multi-antenna transmit processor 471 and the controller/processor 475 of fig. 4.

For one embodiment, the second receiving module 1502 includes the antenna 420, the receiver 418, and the receiving processor 470 shown in fig. 4.

For one embodiment, the second receiving module 1502 includes the multi-antenna receive processor 472 and the controller/processor 475 shown in fig. 4.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the foregoing embodiments may be implemented in the form of hardware, or may be implemented in the form of software functional modules, and the present application is not limited to any specific 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 (transmit 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:

wherein, if the listening type indicated by the first information is a first listening type, the first power cannot exceed a first maximum transmission power, and a reception quality of the first target signal is used to determine the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power; the first listening type does not require performing LBT, and the second listening type requires performing LBT.

2. The method of claim 1, comprising:

receiving second information;

3. The method of claim 1, comprising:

receiving third information;

4. The method according to any of claims 1 to 3, wherein if the listening type indicated by the first information is the first listening type, it is determined that the first time-frequency resource is used for wireless transmission.

5. The method according to any of claims 1 to 3, wherein if the listening type indicated by the first information is the second listening type, comprising:

6. A method according to any one of claims 1 to 3, comprising:

receiving Q signaling;

wherein any one of the Q signaling indicates a listening type and a power offset; for any one of the Q signaling, if the listening type indicated by the any signaling is the same as the listening type indicated by the first information, the first power is related to the indicated power offset, otherwise the first power is not related to the indicated power offset.

7. The method according to any of claims 1 to 3, wherein the first information belongs to first downlink control information, the first downlink control information indicating the first time-frequency resources.

8. A method according to any one of claims 1 to 3, comprising:

receiving fourth information;

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

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

wherein the listening type indicated by the first information is used to determine whether a first time-frequency resource is used for wireless transmission; if the first wireless signal is judged to be used for wireless transmission on the first time-frequency resource, the first wireless signal is transmitted on the first time-frequency resource with first power; otherwise, the wireless transmission on the first time-frequency resource is abandoned, if the listening type indicated by the first information is a first listening type, the first power cannot exceed a first maximum transmission power, and the reception quality of the first target signal is used for determining the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power; the first listening type does not require performing LBT, and the second listening type requires performing LBT.

10. The method of claim 9, comprising:

sending the second information;

11. The method of claim 9, comprising:

sending third information;

12. Method according to any of claims 9 to 11, wherein it is determined that it is used for wireless transmission on a first time frequency resource if the listening type indicated by the first information is the first listening type.

13. The method according to any of claims 9 to 11, wherein if the listening type indicated by the first information is the second listening type, a first channel monitoring is performed by a sender of the first wireless signal to determine whether the first time-frequency resource is used for wireless transmission.

14. The method according to any one of claims 9 to 11, comprising:

sending Q signaling;

15. The method according to any of claims 9 to 11, wherein the first information belongs to first downlink control information, the first downlink control information indicating the first time-frequency resources.

16. The method according to any one of claims 9 to 11, comprising:

sending fourth information;

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

18. The user equipment of claim 17,

the first receiving module receives second information;

19. The UE of claim 17, wherein the first receiving module receives third information;

20. The UE of any one of claims 17 to 19, wherein if the listening type indicated by the first information is the first listening type, it is determined that the first time/frequency resource is used for wireless transmission.

21. The UE of any one of claims 17 to 19, wherein if the listening type indicated by the first information is the second listening type, the first determining module performs first channel monitoring to determine whether the first time/frequency resource is used for wireless transmission.

22. The user equipment according to any of claims 17 to 19,

the first receiving module receives Q signaling;

any one of the Q signalings indicates a listening type and a power offset; for any of the Q signaling, if the listening type indicated by the any signaling is the same as the listening type indicated by the first information, the first power is related to the indicated power offset, otherwise the first power is not related to the indicated power offset.

23. The user equipment according to any of claims 17 to 19,

the first information belongs to first downlink control information, and the first downlink control information indicates the first time-frequency resource.

24. The user equipment according to any of claims 17-19,

the first receiving module receives fourth information;

25. A base station device used for wireless communication, comprising:

wherein the listening type indicated by the first information is used to determine whether a first time-frequency resource is used for wireless transmission; if the first time-frequency resource is used for wireless transmission, the first wireless signal is transmitted at a first power on the first time-frequency resource; otherwise, the wireless transmission on the first time-frequency resource is abandoned, if the interception type indicated by the first information is a first interception type, the first power cannot exceed a first maximum transmission power, and the reception quality of the first target signal is used for determining the first maximum transmission power; if the listening type indicated by the first information is a second listening type, the first power cannot exceed a second maximum transmission power, and the second maximum transmission power is greater than the first maximum transmission power; the first listening type does not require performing LBT, and the second listening type requires performing LBT.

26. The base station apparatus of claim 25,

the second sending module sends second information;

27. The base station device of claim 25, wherein the second sending module sends third information;

28. The base station apparatus according to any of claims 25 to 27, wherein if said listening type indicated by said first information is said first listening type, it is determined that first time frequency resources are used for wireless transmission.

29. The base station apparatus according to any one of claims 25 to 27, wherein if said listening type indicated by said first information is said second listening type, a first channel monitoring is performed by a sender of said first wireless signal to determine whether said first time-frequency resource is used for wireless transmission.

30. The base station apparatus according to any of claims 25 to 27,

the second sending module sends Q signaling;

31. The base station device according to any of claims 25 to 27, wherein the first information belongs to first downlink control information, the first downlink control information indicating the first time-frequency resource.

32. The base station device according to any of claims 25 to 27, wherein said second sending module sends fourth information;