CN110392439B

CN110392439B - Method and device used in user equipment and base station for wireless communication

Info

Publication number: CN110392439B
Application number: CN201810335553.0A
Authority: CN
Inventors: 张晓博; 杨林
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2018-04-16
Filing date: 2018-04-16
Publication date: 2020-12-29
Anticipated expiration: 2038-04-16
Also published as: CN110392439A; WO2019201112A1

Abstract

The application discloses a method and a device in a user equipment, a base station and the like used for wireless communication. As an embodiment, the user equipment receives R reference signal groups, which are respectively transmitted by R antenna port groups; performing a first listening behavior in a first time domain resource on a first frequency domain resource using a first set of receive parameters; sending the first information and the second information; wherein a first set of reception parameters is used for the first listening behavior, the first listening behavior being used to determine whether the first frequency domain resource is free for the first set of reception parameters; the first information is used to indicate a first antenna port group from the R antenna port groups to which the first reception parameter group is associated; the second information is used to indicate whether the first frequency domain resource is free for the first set of reception parameters. The method and the device can improve 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) communication.

Background

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

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 4 LBT (fourth type LBT, see 3GPP TR36.889), the transmitter performs backoff (backoff) after a certain delay period (Defer Duration), the backoff time is counted by using CCA (Clear Channel Assessment) time slot period as a unit, and the number of backoff time slot periods is obtained by the transmitter randomly selecting in CWS (collision Window Size). For downlink transmission, the CWS is adjusted according to HARQ (Hybrid Automatic Repeat reQuest) feedback corresponding to data in a reference subframe (reference sub-frame) transmitted before on the unlicensed spectrum. For uplink transmission, the CWS is adjusted according to whether new data is included in data in a previous reference subframe on the unlicensed spectrum.

In the existing NR system, since the system bandwidth may become wider, Sub-Band (LBT) is proposed, i.e. a base station can listen and transmit a wireless signal only for a part of the frequency Band in the LAA carrier bandwidth.

Disclosure of Invention

The inventor finds out through research that: for subband LBT, the base station may find, through LBT, that only a portion of subbands included in one LAA carrier can be used for wireless transmission; if the base station transmits the radio signal on the partial sub-band immediately like the conventional LTE LAA, the base station cannot monitor the one LAA carrier before the MCOT (Maximum Channel occupancy Time) is finished, and further cannot transmit the radio signal using another sub-band. The smaller the proportion of the partial sub-bands to all sub-bands included in the single LAA carrier, the more the above problem causes a decrease in transmission efficiency.

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 subband LBT, the methods and apparatus of the present application are also applicable to wideband LBT and communication over licensed spectrum.

The present application discloses a method in a User Equipment (UE) used for wireless communication, comprising:

receiving R reference signal groups, wherein the R reference signal groups are respectively sent by R antenna port groups;

performing a first listening behavior in a first time domain resource on a first frequency domain resource using a first set of receive parameters;

sending the first information and the second information;

wherein the first listening behavior is used to determine whether the first frequency domain resource is free for the first set of reception parameters; the first information is used to indicate a first antenna port group from the R antenna port groups to which the first reception parameter group is associated; the second information is used to indicate whether the first frequency domain resource is free for the first reception parameter group, or the second information is used to indicate that the first frequency domain resource is free for the first reception parameter group.

As an embodiment, the first information and the second information can help the serving cell to determine whether to stop the current transmission and start LBT as soon as possible (even if MCOT is not reached), so as to transmit wireless signals on more frequency domain resources and improve transmission efficiency.

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

receiving downlink wireless signals on at least one of the P2 frequency domain resources;

wherein the first information is used to determine a second set of reception parameters, the second information being used to determine a third time domain resource; the second set of reception parameters is used for P1 listening behaviors, the P1 listening behaviors being performed in the third time domain resource on P1 frequency domain resources, respectively; the P1 listening behaviors are respectively used to determine whether the P1 frequency domain resources are idle for the second set of reception parameters, and the P2 of the P1 frequency domain resources are determined to be idle for the second set of reception parameters.

receiving third information, the third information being used to determine that Q1 frequency domain resources are reserved for downstream transmission in a second time domain resource, the Q1 being a positive integer;

wherein any one of the Q1 frequency domain resources is orthogonal in frequency domain to the first frequency domain resource, and the second time domain resource comprises the first time domain resource.

As an embodiment, the ue performs LBT only on frequency domain resources not reserved for downlink transmission, so as to reduce complexity or save power consumption.

As an embodiment, the third information indicates that the Q1 frequency-domain resources are reserved for downlink transmission in the second time-domain resource.

As an embodiment, the above aspect is characterized by comprising:

receiving a first wireless signal with the first set of reception parameters in the second time domain resource on at least one of the Q1 frequency domain resources.

performing Q2 listening behaviors in first time domain resources on Q2 frequency domain resources, respectively, the Q2 being a positive integer;

wherein any of the Q1 frequency-domain resources are orthogonal in frequency domain to any of the Q2 frequency-domain resources; the first set of reception parameters is used for the Q2 listening behaviors, the Q2 listening behaviors are used to determine whether the Q2 frequency domain resources are free for the first set of reception parameters, respectively; the second information is for indicating whether each of the Q2 frequency domain resources is free for the first set of reception parameters.

As an embodiment, the second information indicates an idle frequency domain resource only in frequency domain resources that are not reserved for downlink transmission, so as to reduce redundancy caused by the second information and improve transmission efficiency.

As an embodiment, the second information indicates only idle frequency domain resources among the Q2 frequency domain resources, so as to reduce redundancy caused by the second information and improve transmission efficiency.

receiving fourth information, the fourth information being used to indicate Q3 frequency domain resources;

wherein the Q2 frequency-domain resources consist of all of the Q3 frequency-domain resources that do not belong to the Q1 frequency-domain resources, the Q3 being a positive integer.

As an embodiment, the second information indicates only idle frequency domain resources among the Q3 frequency domain resources, so as to reduce redundancy caused by the second information and improve transmission efficiency.

receiving fifth information, the fifth information being used to determine a first threshold;

wherein, for any one of the Q2 listening behaviors or the first listening behavior, if the detected energy is less than the first threshold for a given duration of the first time domain resource, the corresponding frequency domain resource is judged to be idle for the first set of reception parameters.

As an embodiment, the duration of the first time domain resource is greater than the given duration.

As an embodiment, the duration of the first time domain resource is equal to the given duration, i.e. if the detected energy is less than the first threshold within the first time domain resource, the respective frequency domain resource is idle for the first set of reception parameters, otherwise the respective frequency domain resource is not idle for the first set of reception parameters.

Specifically, according to an aspect of the present application, the first frequency domain resource is deployed in an unlicensed spectrum, and the first information and the second information are transmitted on the licensed spectrum.

The present application relates to a method used in a base station apparatus for wireless communication, comprising:

transmitting R reference signal groups, wherein the R reference signal groups are respectively transmitted by R antenna port groups;

receiving first information and second information;

wherein the first information is used to indicate a first antenna port group from the R antenna port groups; a first set of receive parameters is associated to the first set of antenna ports, the first set of receive parameters being used for a first listening behavior performed in a first time domain resource on a first frequency domain resource, the first listening behavior being used to determine whether the first frequency domain resource is free for the first set of receive parameters; the second information is used to indicate whether the first frequency domain resource is idle for the first set of reception parameters or the second information is used to indicate that the first frequency domain resource is idle for the first set of reception parameters.

For one embodiment, any one of the R Antenna Port groups includes a positive integer number of Antenna ports (Antenna ports).

As an embodiment, any one of the R antenna port groups includes and includes only one antenna port.

As an embodiment, any one of the R reference signal groups includes a positive integer number of reference signals, and the positive integer number of reference signals are respectively transmitted by a positive integer number of antenna ports.

As an embodiment, the air interface resources occupied by any two reference signals in the positive integer number of reference signals are orthogonal, where the air interface resources include time-frequency resources and multiple access signatures, and if the multiple access signatures occupied by the two air interface resources are orthogonal, or if the time-frequency resources occupied by the two air interface resources are orthogonal (that is, not overlapped).

As one embodiment, at least one of the R Reference Signal groups includes DRS (Discovery Reference Signal).

As an embodiment, at least one of the R Reference Signal groups includes a positive integer number of CSI-RSs (Channel state Information Reference signals), which are respectively transmitted by a positive integer number of antenna ports.

performing P1 listening behaviors in third time domain resources on the P1 frequency domain resources, respectively;

transmitting downlink wireless signals on P2 frequency domain resources of the P1 frequency domain resources;

wherein a second set of reception parameters is used for the P1 listening behaviors, the first information is used for determining the second set of reception parameters, the second information is used for determining the third time domain resource, the P1 listening behaviors are respectively used for determining whether the P1 frequency domain resources are free for the second set of reception parameters; the P2 frequency domain resources are determined to be idle for the second set of reception parameters.

As an embodiment, the second set of reception parameters is associated to the first set of antenna ports.

As an embodiment, if the second information indicates that the first frequency domain resources are free, the base station device starts the P1 listening behaviors immediately after decoding the second information.

As an embodiment, if the second information indicates that the first frequency-domain resources are free, the base station apparatus stops all transmissions in the P1 frequency-domain resources immediately after decoding the second information.

As an embodiment, the base station device receives M uplink messages, where the second information is one of the M uplink messages, and the M uplink messages are sent by M terminals respectively; m-1 uplink messages of the M uplink messages except the second information are respectively peers of the second information, and if the uplink message exceeding a first ratio of the M uplink messages indicates that the first frequency domain resource is idle, the base station device starts the P1 listening behaviors immediately after decoding the second information, wherein the first ratio is greater than 0 and not greater than 1.

As an embodiment, the first ratio is determined by the base station apparatus itself.

As an embodiment, the first ratio is predefined.

transmitting third information, the third information being used to determine that Q1 frequency domain resources are reserved for downlink transmission in a second time domain resource, the Q1 being a positive integer;

As one embodiment, the third information is dynamically configured.

As an embodiment, the third Information is a DCI (Downlink Control Information).

As a sub-embodiment of the above embodiment, the one DCI is identified by CC-RNTI (Cell Common Radio Network Temporary Identifier).

As a sub-embodiment of the above embodiment, the one DCI is cell-common.

Specifically, according to an aspect of the present application, wherein the second information is used for indicating whether each of the Q2 frequency domain resources is free for the first reception parameter group; q2 is a positive integer; the Q2 listening behaviors are used to determine whether Q2 frequency domain resources are free for the first set of reception parameters, respectively; the Q2 listening behaviors are performed in the first time domain resources on the Q2 frequency domain resources, respectively; any of the Q1 frequency-domain resources are orthogonal in frequency domain to any of the Q2 frequency-domain resources; the first set of reception parameters is used for the Q2 listening behaviors.

As an embodiment, if the second information indicates that the free frequency domain resources of the Q2 frequency domain resources exceed a second ratio, the base station device initiates the P1 listening behaviors immediately after decoding the second information.

As an embodiment, if the second information indicates that the free of the Q2 frequency domain resources exceeds a second ratio, the base station apparatus stops all transmissions in the P1 frequency domain resources immediately after decoding the second information, the second ratio being greater than 0 and not greater than 1.

As an embodiment, the base station device receives M uplink messages, where the second information is one of the M uplink messages, and the M uplink messages are sent by M terminals respectively; m-1 uplink messages of the M uplink messages except the second information are peers of the second information, respectively, and if the uplink messages exceeding a third ratio of the M uplink messages satisfy the following condition, the base station device starts the P1 monitoring actions immediately after decoding the second information:

the indicated proportion of free in frequency domain resources exceeds a third proportion;

wherein the second ratio is greater than 0 and not greater than 1.

transmitting fourth information, the fourth information being used to indicate Q3 frequency domain resources;

transmitting fifth information, the fifth information being used to determine a first threshold;

As one embodiment, the fifth information indicates the first threshold.

As an embodiment, the fifth information indicates one or more parameters used to generate the first threshold.

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

a first receiving module: receiving R reference signal groups, wherein the R reference signal groups are respectively sent by R antenna port groups;

the first monitoring module: performing a first listening behavior in a first time domain resource on a first frequency domain resource using a first set of receive parameters;

a first sending module: sending the first information and the second information;

As an embodiment, the above user equipment used for wireless communication is characterized in that the first receiving module receives downlink wireless signals on at least one of P2 frequency domain resources;

wherein a second set of reception parameters is related to the first information, the second information being used to determine a third time domain resource; the second set of reception parameters is used for P1 listening behaviors, the P1 listening behaviors being performed in the third time domain resource on P1 frequency domain resources, respectively; the P1 listening behaviors are respectively used to determine whether the P1 frequency domain resources are idle for the second set of reception parameters, and the P2 of the P1 frequency domain resources are determined to be idle for the second set of reception parameters.

As an embodiment, the above user equipment used for wireless communication is characterized in that the first receiving module receives third information, the third information being used for determining that Q1 frequency domain resources are reserved for downlink transmission in a second time domain resource, the Q1 being a positive integer;

As an embodiment, the user equipment configured for wireless communication is characterized in that the first receiving module receives the first radio signal in the second time domain resource on at least one of the Q1 frequency domain resources by using the first receiving parameter group.

As an embodiment, the above user equipment for wireless communication is characterized in that the first listening module performs Q2 listening behaviors in a first time domain resource on Q2 frequency domain resources, respectively, the Q2 being a positive integer;

As an embodiment, the above user equipment used for wireless communication is characterized in that the first receiving module receives fourth information, and the fourth information is used for indicating Q3 frequency domain resources;

As an embodiment, the above user equipment used for wireless communication is characterized in that the first receiving module receives fifth information, and the fifth information is used for determining the first threshold;

As an embodiment, the user equipment used for wireless communication is characterized in that the first frequency domain resource is deployed in an unlicensed spectrum, and the first information and the second information are transmitted on a licensed spectrum.

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

a second sending module: transmitting R reference signal groups, wherein the R reference signal groups are respectively transmitted by R antenna port groups;

a second receiving module: receiving first information and second information;

As an embodiment, the base station apparatus used for wireless communication described above is characterized by comprising:

the second monitoring module: performing P1 listening behaviors in third time domain resources on the P1 frequency domain resources, respectively;

the second transmitting module transmits downlink wireless signals on P2 frequency-domain resources of the P1 frequency-domain resources;

As an embodiment, how to determine the second set of reception parameters based on the first information is self-determined by the base station device, i.e. does not require standardization.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the second transmitting module transmits third information, the third information being used to determine that Q1 frequency domain resources are reserved for downlink transmission in a second time domain resource, the Q1 being a positive integer;

As an embodiment, the above base station apparatus for wireless communication is characterized in that the second information is used to indicate whether each of Q2 frequency domain resources is free for the first reception parameter group; q2 is a positive integer; the Q2 listening behaviors are used to determine whether Q2 frequency domain resources are free for the first set of reception parameters, respectively; the Q2 listening behaviors are performed in the first time domain resources on the Q2 frequency domain resources, respectively; any of the Q1 frequency-domain resources are orthogonal in frequency domain to any of the Q2 frequency-domain resources; the first set of reception parameters is used for the Q2 listening behaviors.

As an embodiment, the above base station apparatus used for wireless communication is characterized in that the second sending module sends fourth information, the fourth information being used to indicate Q3 frequency domain resources;

As an embodiment, the above base station apparatus used for wireless communication is characterized in that the second transmission module transmits fifth information, and the fifth information is used for determining the first threshold;

As an embodiment, the base station device used for wireless communication is characterized in that the first frequency domain resource is deployed in an unlicensed spectrum, and the first information and the second information are transmitted on a licensed spectrum.

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

once a frequency domain resource is found to be free, the base station can quickly occupy the channel, perform wireless transmission, and obtain transmission opportunities as much as possible; meanwhile, the base station can timely occupy more frequency domain resources for downlink transmission according to the feedback of the UE, so that the transmission efficiency is improved;

reducing the empty resource occupied by the UE feedback, and further improving the transmission efficiency.

Drawings

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

FIG. 1 shows a flow diagram for transmitting first information and second information 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 communication between a base station and a UE according to one embodiment of the present application;

FIG. 6 shows a flow diagram of snoop behavior with counters according to an embodiment of the present application;

FIG. 7 illustrates a listening flow diagram in a third type of time slot according to one embodiment of the present application;

FIG. 8 illustrates a diagram of facilitating performance of a listening behavior utilizing a second type of information, according to an embodiment of the present application;

FIG. 9 shows a schematic diagram of P1 snoop behaviors according to one embodiment of the present application;

FIG. 10 shows a schematic diagram of a target time slot and a second type of time slot according to one embodiment of the present application;

fig. 11 shows a schematic diagram of a multi-antenna based communication device according to an embodiment of the present application;

FIG. 12 shows a block diagram of a processing device in a user equipment according to an embodiment of the application;

fig. 13 is a block diagram showing a configuration of a processing device in a base station apparatus according to an embodiment of the present application;

example 1

Embodiment 1 illustrates a flowchart for transmitting first information and second information, as shown in fig. 1.

In embodiment 1, a user equipment first receives R reference signal groups, which are respectively transmitted by R antenna port groups; then, a first monitoring action is executed in a first time domain resource on the first frequency domain resource by adopting a first receiving parameter group; then, sending the first information and the second information;

in embodiment 1, the first listening behavior is used to determine whether the first frequency domain resource is free for the first receive parameter set; the first information is used to indicate a first antenna port group from the R antenna port groups to which the first reception parameter group is associated; the second information is used to indicate whether the first frequency domain resource is free for the first reception parameter group, or the second information is used to indicate that the first frequency domain resource is free for the first reception parameter group; the first antenna port group is one of the R antenna port groups.

As an embodiment, at least two antenna port groups of the R antenna port groups include different numbers of antenna ports.

As one embodiment, at least one of the R reference signal groups includes a synchronization signal.

For one embodiment, the R reference signal groups respectively include R CSI-RS Resource sets (Resource sets).

For one embodiment, the R reference signal groups respectively include R CSI-RS resources.

As one embodiment, the R reference signal groups respectively include R synchronization signals.

As one embodiment, the Synchronization Signal includes at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS).

As an embodiment, the first information and the second information are transmitted on one physical layer channel, respectively.

As an embodiment, the first information and the second information are transmitted on one physical layer channel.

As an embodiment, the Physical layer Channel is a PUCCH (Physical Uplink Control Channel).

As an embodiment, the Physical layer Channel is a PUSCH (Physical Uplink Shared Channel).

As an embodiment, the first information and the second information are transmitted on PUCCH and PUSCH, respectively.

As one embodiment, the first information and the second information are transmitted on PUSCH and PUCCH, respectively.

As an embodiment, the first Information and the second Information belong to the same UCI (Uplink Control Information).

As one embodiment, the first information is CRI (CSI-RS Resource Indicator).

As one embodiment, the first set of reception parameters associated to the first set of antenna ports comprises: the UE receives a first reference signal group by using the first receiving parameter group, wherein the first reference signal group is one of the R reference signal groups transmitted by the first antenna port group.

As one embodiment, the first set of reception parameters associated to the first set of antenna ports comprises: the first set of reception parameters includes a first beamforming vector used to generate at least one antenna port of the first set of antenna ports.

As one embodiment, the first set of reception parameters associated to the first set of antenna ports comprises: the first set of reception parameters includes a first beamforming vector QCL (Quasi Co-Located), and a second beamforming vector QCL (semi-Co-Located) used to generate at least one antenna port of the first antenna port set.

As an embodiment, the first listening behavior performs energy detection by using the first beamforming vector, where the received Power is based on EIRP (Effective Isotropic Radiated Power).

As an embodiment, the received power includes a beamforming gain of the first beamforming vector.

As an embodiment, the first beamforming vector comprises an Analog beamforming vector, and the second beamforming vector comprises an Analog beamforming vector.

As an embodiment, the first beamforming vector includes an analog beamforming vector and a digital beamforming vector, and the first beamforming vector is a kronecker product of the analog beamforming vector and the digital beamforming vector.

As an embodiment, the second beamforming vector includes an analog beamforming vector and a digital beamforming vector, and the second beamforming vector is a kronecker product of the analog beamforming vector and the digital beamforming vector.

As an example, if the large scale fading corresponding to a beam generated by one beamforming vector can be used to infer the large scale fading corresponding to a beam generated by another beamforming vector, the one beamforming vector and the another beamforming vector QCL.

As one embodiment, the large scale fading includes a maximum multipath delay.

For one embodiment, the large scale fading includes a maximum doppler shift.

As an embodiment, the second information is used to indicate whether the first frequency domain resources are free for the first set of reception parameters.

As an embodiment, the second information is used to indicate that the first frequency domain resource is free for the first reception parameter group, i.e. the second information is transmitted only if the first frequency domain resource is free for the first reception parameter group.

As one embodiment, the first frequency-domain resource includes a positive integer number of sub-carriers.

As an embodiment, the first frequency-domain resource includes a positive integer number BWP (BandWidth Part).

As an embodiment, the first frequency-domain resource includes a plurality of frequency-domain sub-resources, each of which is composed of a plurality of subcarriers that are consecutive in a frequency domain.

As an embodiment, each of the plurality of frequency-domain sub-resources is a BWP.

As an embodiment, each of the plurality of frequency domain sub-resources comprises a positive integer number of RBs (Resource blocks) that are contiguous in the frequency domain.

As an embodiment, the duration of the first time domain resource is less than the duration of one multicarrier symbol.

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 multicarrier symbol is an FBMC (Filter Bank Multi-Carrier) symbol.

As one embodiment, R is a positive integer greater than 1.

As an embodiment, the duration of the first time domain resource is not less than 4 microseconds.

As an embodiment, the duration of the first time domain resource is not greater than 36 microseconds.

As one embodiment, the first frequency domain resource is deployed in an unlicensed spectrum.

As one embodiment, the first information and the second information are transmitted over a licensed spectrum.

As an embodiment, each of the R reference signal groups is transmitted on a first carrier whose system bandwidth includes the first frequency-domain resource.

As an embodiment, the first frequency domain resource includes a system bandwidth of one carrier.

Example 2

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

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

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 for data transmission over unlicensed spectrum.

Example 3

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

Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane and the control plane, fig. 3 showing the radio protocol architecture for the UE and the gNB in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above PHY301 and is responsible for the link between the UE and the gNB through PHY 301. In the user plane, the L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the gNB on the network side. Although not shown, the UE may have several protocol layers above the L2 layer 305, including a network layer (e.g., IP layer) that terminates at the P-GW213 on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.). The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides header compression for upper layer packets to reduce radio transmission overhead, security by ciphering the packets, and handover support for UEs between gnbs. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ (Hybrid Automatic Repeat reQuest). The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the UE and the gNB is substantially the same for the physical layer 301 and the L2 layer 305, but without the header compression function for the control plane. The Control plane also includes an RRC (Radio Resource Control) sublayer 306 in layer 3 (layer L3). The RRC sublayer 306 is responsible for obtaining radio resources (i.e., radio bearers) and configures the lower layers using RRC signaling between the gNB and the UE.

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

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

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

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

As an embodiment, the third information in the present application is generated in the PHY 301.

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

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 MAC sublayer 302.

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

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 communicating in an access network.

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

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

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

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

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

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

As an embodiment, the UE450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving R reference signal groups, wherein the R reference signal groups are respectively sent by R antenna port groups; performing a first listening behavior in a first time domain resource on a first frequency domain resource using a first set of receive parameters; sending the first information and the second information; wherein the first listening behavior is used to determine whether the first frequency domain resource is free for the first set of reception parameters; the first information is used to indicate a first antenna port group from the R antenna port groups to which the first reception parameter group is associated; the second information is used to indicate whether the first frequency domain resource is free for the first reception parameter group, or the second information is used to indicate that the first frequency domain resource is free for the first reception parameter group.

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 R reference signal groups, wherein the R reference signal groups are respectively sent by R antenna port groups; receiving first information and second information; wherein the first information is used to indicate a first antenna port group from the R antenna port groups; a first set of receive parameters is associated to the first set of antenna ports, the first set of receive parameters being used for a first listening behavior performed in a first time domain resource on a first frequency domain resource, the first listening behavior being used to determine whether the first frequency domain resource is free for the first set of receive parameters; the second information is used to indicate whether the first frequency domain resource is free for the first reception parameter group, or the second information is used to indicate that the first frequency domain resource is free for the first reception parameter group.

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.

For one embodiment, the antenna 452, the receiver 454, and the receive processor 456 are used to receive the R sets of reference signals in this application; { the antenna 420, the transmitter 418, the transmit processor 416} are used to transmit the R reference signal groups 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 R reference signal groups of the present application; { the multi-antenna transmit processor 471, the controller/processor 475}, at least one of which is used to transmit the R reference signal groups in this application.

As an example, { the antenna 420, the receiver 418, the reception processor 470} is used to receive the first information and the second information in this application; { the antenna 452, the transmitter 454, the transmission processor 468} is used to transmit the first information and the second information in this application.

As an example, at least one of the multi-antenna reception processor 472, the controller/processor 475 is used for receiving the first information and the second information in the present application; { the multi-antenna transmission processor 457, the controller/processor 459} is used for transmitting the first information and the second information in this application.

As an example, the antenna 452, the transmitter 454, the receive processor 456, the controller/processor 459 are used for the first listening behavior in this application.

For one embodiment, the multi-antenna transmit processor 457 is configured to receive the first listening behavior in this application.

Example 5

Embodiment 5 illustrates a flowchart of wireless transmission, as shown in fig. 5, in which steps included in blocks F1, F2, and F3, respectively, are optional. In fig. 5, base station N1 is the serving cell maintenance base station for user equipment U2.

For the base station N1, transmitting the target information group in step S10; transmitting R reference signal groups, which are respectively transmitted by R antenna port groups, in step S11; receiving the first information and the second information in step S12; performing P1 listening behaviors in a third time domain resource on the P1 frequency domain resources, respectively, in step S13; transmitting downlink wireless signals on P2 frequency-domain resources of the P1 frequency-domain resources in step S14;

for the user device U2, receiving a target information group in step S20; receiving R reference signal groups, which are respectively transmitted by R antenna port groups, in step S21; performing Q4 listening behaviors, respectively, in a first time domain resource among the Q4 frequency domain resources using the first set of reception parameters in step S22; transmitting the first information and the second information in step S23; a downlink wireless signal is received on at least one frequency domain resource of the P2 frequency domain resources in step S24.

In embodiment 5, the Q4 is a positive integer, one of the Q4 listening behaviors is a first listening behavior, and one of the Q4 frequency-domain resources corresponding to the first listening behavior is a first frequency-domain resource; the first listening behavior is used to determine whether the first frequency domain resource is free for the first set of reception parameters; the first information indicates a first antenna port group from among the R antenna port groups to which the first set of reception parameters is associated; the second information is used to indicate whether the first frequency domain resource is free for the first reception parameter group, or the second information is used to indicate that the first frequency domain resource is free for the first reception parameter group; a second set of reception parameters is used for the P1 listening behaviors, the first information is used by the base station N1 to determine the second set of reception parameters, the second information is used by the base station N1 to determine the third time domain resource, the P1 listening behaviors are respectively used by the base station N1 to determine whether the P1 frequency domain resources are free for the second set of reception parameters; the P2 frequency domain resources are determined to be free for the second set of reception parameters.

As one embodiment, the second set of reception parameters associated to the first set of antenna ports comprises: the base station N1 includes a third beamforming vector using the second set of receive parameters, the third beamforming vector being used to generate at least one antenna port of the first antenna port group.

As one embodiment, the second set of reception parameters associated to the first set of antenna ports comprises: the base station N1 includes, using the second receiving parameter group, a third beamforming vector, where the third beamforming vector is used to generate at least one antenna port in the first antenna port group, and the second beamforming vector is QCL (Quasi Co-Located, semi-Co-Located).

As an embodiment, each of the P1 listening behaviors uses the third beamforming vector for energy detection, wherein the received Power is based on EIRP (Effective Isotropic Radiated Power).

As a sub-embodiment of the above embodiment, the received power includes a beamforming gain of the third beamforming vector.

As an example, the third beamforming vector comprises an Analog beamforming vector, and the second beamforming vector comprises an Analog beamforming vector.

As an embodiment, the third beamforming vector includes an analog beamforming vector and a digital beamforming vector, and the third beamforming vector is a kronecker product of the analog beamforming vector and the digital beamforming vector.

As one embodiment, the large scale fading includes a maximum multipath delay.

For one embodiment, the large scale fading includes a maximum doppler shift.

As an embodiment, the wireless signal transmitted in the step S14 is transmitted on a PDSCH (Physical Downlink Shared Channel).

As an embodiment, the radio signal transmitted in step S14 occupies multiple REs (Resource elements ), and the REs occupy one multicarrier symbol in the time domain and one subcarrier in the frequency domain.

As one embodiment, the wireless signal transmitted in the step S14 includes a plurality of wireless sub-signals, and the plurality of wireless sub-signals are respectively for a plurality of terminals.

As an embodiment, the user equipment U2 is one of the plurality of terminals, and the wireless signal received in the step S24 is one of the plurality of wireless sub-signals.

As an embodiment, the target information group includes third information used to determine that Q1 frequency domain resources are reserved for downlink transmission in a second time domain resource, the Q1 is a positive integer; wherein any of the Q1 frequency domain resources are orthogonal in frequency domain to the first frequency domain resource, and the second time domain resource comprises the first time domain resource.

As an embodiment, the bandwidths of any two of the Q1 frequency domain resources are equal.

As an embodiment, the third information is broadcast.

As one embodiment, the third information is dynamically configured.

As a sub-embodiment of the above embodiment, the one DCI is identified by a CC-RNTI.

For one embodiment, the target information group includes fourth information, the fourth information being used to indicate Q3 frequency domain resources; wherein the Q2 frequency-domain resources consist of all of the Q3 frequency-domain resources that do not belong to the Q1 frequency-domain resources, the Q3 being a positive integer.

As an embodiment, the fourth information is semi-statically configured.

As an embodiment, the fourth Information includes an RRC IE (Information Element).

As an embodiment, the target information group includes fifth information, the fifth information being used to determine a first threshold; wherein, for any one of the Q2 listening behaviors or the first listening behavior, if the detected energy is less than the first threshold for a given duration of the first time domain resource, the corresponding frequency domain resource is judged to be idle for the first set of reception parameters.

As an embodiment, the fifth Information includes one or more RRC IEs (Information elements).

As one embodiment, the fifth information indicates the first threshold.

As an embodiment, the fifth information indicates one or more parameters required for generating the first threshold.

As an embodiment, the fifth information is cell-common.

As an example, the first threshold value has a unit of dBm (decibels).

As one embodiment, the unit of the first threshold is mW (milliwatt).

As an embodiment, the wireless signal in step S14 is output from the first bit block after Channel Coding (Channel Coding), Scrambling (Scrambling), Modulation Mapper (Modulation Mapper), Layer Mapper (Layer Mapper), Precoding (Precoding), Resource Element Mapper (Resource Element Mapper), and wideband symbol Generation (Generation) in sequence.

The wireless signal in step S14 is an output of a first bit block after Channel Coding (Channel Coding), Scrambling (Scrambling), Modulation Mapper (Modulation Mapper), Resource Element Mapper (Resource Element Mapper), and wideband symbol Generation (Generation).

As an embodiment, the wireless signal in step S24 is output from the first bit block after Channel Coding (Channel Coding), Scrambling (Scrambling), Modulation Mapper (Modulation Mapper), Layer Mapper (Layer Mapper), Precoding (Precoding), Resource Element Mapper (Resource Element Mapper), and wideband symbol Generation (Generation) in sequence.

The wireless signal in step S24 is an output of a first bit block after Channel Coding (Channel Coding), Scrambling (Scrambling), Modulation Mapper (Modulation Mapper), Resource Element Mapper (Resource Element Mapper), and wideband symbol Generation (Generation).

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

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

As one embodiment, any of the Q1 frequency domain resources are orthogonal (i.e., do not overlap) in frequency domain with any of the Q4 frequency domain resources; the Q4 listening behaviors are used to determine whether the Q4 frequency domain resources are free for the first set of reception parameters, respectively; the second information is for indicating whether each of the Q4 frequency domain resources is free for the first set of reception parameters.

As an example, the Q4 is equal to the sum of the Q2 and 1 herein; the Q4 frequency domain resources consist of the Q2 frequency domain resources in the present application and the first frequency domain resources in the present application; the Q4 snoop behaviors are composed of the Q2 snoop behaviors in the present application and the first snoop behavior in the present application.

For one embodiment, the P1 frequency domain resources include the Q4 frequency domain resources.

As an embodiment, the P1 is equal to the sum of the Q4 and the Q1, and the P1 frequency domain resources are composed of the Q4 frequency domain resources and the Q1 frequency domain resources.

Example 6

Embodiment 6 illustrates a flow chart of snoop behavior using counters, as shown in fig. 6.

In step S600, a target counter is set to a target integer; in step S601, determining whether the target counter is 0, if yes, determining that the target frequency domain resource is free for the target receiving parameter group in step S607, if no, subtracting 1 from the target counter in step S602; performing energy detection in a second type of slot on the target frequency domain resource using the target receiving parameter set in step S603; in step S604, determining whether the second class time slot is idle, if yes, executing step S601, and if not, in step S605, executing energy detection in the first class time slot on the target frequency domain resource by using the target receiving parameter group; in step S606, it is determined whether the first type of timeslot is idle, if so, the step S601 is executed, and if not, the step S605 is executed.

As an embodiment, if the energy detected in the step S603 is less than a first specific threshold within a given duration of the one second-type time slot, the one second-type time slot is considered to be idle in the step S604 (i.e. the judgment result is yes); otherwise, in the step S904, the second type slot is not considered to be idle (i.e., the determination result is no).

As an embodiment, if the energy detected in the step 603 is less than the first specific threshold in the one second type time slot, the one second type time slot is considered to be idle in the step S604 (i.e. the judgment result is yes); otherwise, in the step S604, the one second-type timeslot is not considered to be idle (i.e., the determination result is no).

As an embodiment, if all the second type timeslots included in the one first type timeslot are considered to be idle in the step S605, the one first type timeslot is considered to be idle in the step S606 (i.e. the determination result is yes); otherwise, in the step S606, the first class slot is considered not to be idle (i.e. the determination result is no).

As an embodiment, if the energies detected in the step 605 are all smaller than the second specific threshold in the one first type time slot, the one first type time slot is considered to be idle in the step S606 (i.e. the judgment result is yes); otherwise, in the step S606, the first class slot is considered not to be idle (i.e. the determination result is no).

As an embodiment, the first specific threshold value is equal to the second specific threshold value.

As an embodiment, the first specific threshold is equal to or greater than the second specific threshold.

As an embodiment, the first specific threshold is configurable.

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

As an embodiment, the unit of the first specific threshold is mW (milliwatt).

As an embodiment, the duration of said one first type of time slot is greater than the duration of said one second type of time slot.

As an example, the duration of the one second type of time slot is 9 microseconds.

As an example, the duration of said one second type of time slot does not exceed 9 microseconds.

As an example, the duration of the one first type of time slot is 25 microseconds.

As an example, the duration of said one first type of time slot does not exceed 25 microseconds.

As an example, the duration of the one first type of time slot is 36 microseconds.

As an example, the duration of said one first type of time slot does not exceed 36 microseconds.

As an embodiment, the first listening behavior in this application includes the steps in fig. 6, the target frequency domain resource is the first frequency domain resource in this application, and the target receiving parameter group is the first receiving parameter group in this application.

As an example of the foregoing embodiment, the first threshold in this application is the foregoing first specific threshold, and the first threshold in this application is the foregoing second specific threshold.

As an embodiment, any of the Q2 listening behaviors in the present application includes the steps in fig. 6, the target frequency domain resource is a frequency domain resource corresponding to the any of the Q2 frequency domain resources in the present application, and the target receiving parameter group is the first receiving parameter group in the present application.

As an embodiment, P3 of the P1 listening behaviors in the present application respectively include the steps in fig. 6, the P3 listening behaviors are respectively performed in P3 frequency domain resources of the P1 frequency domain resources, for any one of the P3 listening behaviors, the target frequency domain resource is a frequency domain resource corresponding to any one of the P3 listening behaviors of the P1 frequency domain resources in the present application, and the target receiving parameter group is the second receiving parameter group in the present application; the P3 is a positive integer no greater than the P1.

As an example, the P3 frequency domain resources and the Q1 frequency domain resources in this application constitute the P1 frequency domain resources in this application.

Example 7

Embodiment 7 illustrates a listening flowchart in a third type of time slot, as shown in fig. 7.

In step S701, performing energy detection in a third type of time slot on the target frequency domain resource by using a target receiving parameter set; in step S702, it is determined whether the one third class time slot is idle, if yes, in step S703, it is determined that the target frequency domain resource is idle for the target receiving parameter group, if no, the step S701 is executed.

For one embodiment, the one third type of time slot includes a plurality of second type of time slots; in step S702, if all the second type timeslots included in the first type timeslot are considered to be idle, the third type timeslot is considered to be idle (i.e., the determination result is yes), otherwise, the first type timeslot is considered not to be idle (i.e., the determination result is no).

As an embodiment, if the energy detected in the step 701 is less than a third specific threshold in the one third-class time slot, the one third-class time slot is considered to be idle in the step S702 (i.e. the judgment result is yes); otherwise, in the step S703, the one third-class time slot is considered not to be idle (i.e., the determination result is no).

As an example, the duration of said one third type of time slot is 25 microseconds.

As an example, the duration of said one third type of time slot does not exceed 25 microseconds.

As an example, the duration of the one third type of time slot is 36 microseconds.

As an example, the duration of said one third type of time slot does not exceed 36 microseconds.

As an embodiment, the first listening behavior in this application includes the steps in fig. 7, the target frequency domain resource is the first frequency domain resource in this application, and the target receiving parameter group is the first receiving parameter group in this application.

As an example of the above embodiment, the first threshold in the present application is the third specific threshold described above.

As an embodiment, any of the Q2 listening behaviors in the present application includes the steps in fig. 7, the target frequency domain resource is a frequency domain resource corresponding to the any of the Q2 frequency domain resources in the present application, and the target receiving parameter group is the first receiving parameter group in the present application.

As an embodiment, P4 of the P1 listening behaviors in the present application respectively include the steps in fig. 7, the P4 listening behaviors are respectively performed in P4 frequency domain resources of the P1 frequency domain resources, for any one of the P4 listening behaviors, the target frequency domain resource is a frequency domain resource corresponding to any one of the P4 listening behaviors of the P1 frequency domain resources in the present application, and the target receiving parameter group is the second receiving parameter group in the present application; the P4 is a positive integer no greater than the P1.

As an embodiment, the P4 is equal to the Q1 in this application, and the P4 frequency domain resources are the Q1 frequency domain resources in this application.

As a sub-embodiment of the above embodiment, the P4 frequency domain resources and the P3 frequency domain resources in embodiment 6 constitute the P1 frequency domain resources in this application.

In the foregoing sub-embodiment, since the Q1 frequency domain resources are just occupied or the occupied Time has not reached the MCOT (Maximum Channel occupancy Time, the base station device adopts the monitoring behavior in fig. 7 in each of the Q1 frequency domain resources to improve the transmission opportunity, and the other frequency domain resources are not occupied, the base station device adopts the monitoring behavior in fig. 6 in each of the P1 frequency domain resources and in each of the frequency domain resources other than the Q1 frequency domain resources.

As an embodiment, the third specific threshold is configurable.

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

As an embodiment, the unit of the third specific threshold is mW (milliwatt).

Example 8

Embodiment 8 illustrates a schematic diagram of performing a listening behavior with the aid of the second type of information, as shown in fig. 8. The steps in fig. 8 are performed in the base station apparatus.

In step S800, in a given time domain resource, the base station apparatus transmits a wireless signal in each of the frequency domain resources on the Q1 frequency domain resources; receiving second type information (sent by one or more terminals) in step S801, wherein all the received second type information indicates the first antenna port group; the received second type information comprises the second information in the application; in step S802, the base station device determines whether to start a monitoring operation according to the collected second type information; if not, determining in step S803 whether the continuous transmission time currently on the Q1 frequency domain resources reaches MCOT, and if not, continuing to determine in step S802 whether to start a listening operation according to the collected second type information; if it is determined in step S802 that it is yes (i.e., a listening operation is started) or it is determined in step S803 that the current transmissions on the Q1 frequency domain resources reach MCOT, the transmissions on the Q1 frequency domain resources are stopped in step S804, and P1 listening operations are respectively performed on the P1 frequency domain resources.

In embodiment 7, if the base station apparatus determines yes (i.e., starts the listening operation) and the continuous transmission time currently on the Q1 frequency-domain resources has not reached the MCOT in step S802, the base station apparatus immediately terminates the transmission on the Q1 frequency-domain resources without waiting for the transmission time to reach the MCOT.

For one embodiment, the P1 frequency domain resources include the Q1 frequency domain resources.

As an embodiment, in step S802, the base station device collects second type information reported by a plurality of UEs; for the first receiving parameter group, if the second type information exceeding the first percentage meets the condition, the base station equipment judges to start the monitoring operation, otherwise, the base station equipment judges not to start the monitoring operation; the meeting conditions include: the indicated proportion of frequency domain resources that are free is greater than the second percentage.

As one embodiment, the second percentage is greater than the quotient of the Q1 divided by the P1.

As an embodiment, in step S802, the base station device collects only the second type of information reported by one UE, that is, the second information; and if the frequency domain resources indicated by the second information are idle, the base station equipment judges to start the monitoring operation, otherwise, the base station equipment judges not to start the monitoring operation.

As an embodiment, the listening operation in step S802 is based on the second set of reception parameters in the present application.

Example 9

Example 9 illustrates a schematic diagram of P1 snoop behaviors, as shown in fig. 9.

In embodiment 9, the first carrier is composed of P1 frequency domain resources, i.e., frequency domain resource #1, frequency domain resource #2, frequency domain resources #3, …, frequency domain resource # P1. In the given time domain resource, the base station apparatus transmits only the given wireless signal on the frequency domain resource #2, and does not transmit the wireless signal on the other frequency domain resources; in the third time domain resource, the base station device performs P1 monitoring behaviors, namely monitoring behavior #1, monitoring behavior #2, monitoring behavior #3, … and monitoring behavior # P1, on P1 frequency domain resources respectively, wherein the P1 monitoring behaviors are used for judging that the P1 frequency domain resources are idle for the second receiving parameter group respectively; and immediately after the third time domain resource, the base station equipment transmits downlink wireless signals on the P1 frequency domain resources.

In embodiment 9, the total duration of the given time domain resource, the third time domain resource, and the time domain resource occupied by the downlink wireless signal does not exceed one MCOT; the first information in this application is used to determine the second set of reception parameters, and the second information in this application is used to determine the third time domain resource.

As an embodiment, the given time domain resource includes the first time domain resource in this application.

As an embodiment, the given time domain resource is the second time domain resource in this application, the Q1 frequency domain resources in this application are the frequency domain resource #2, and the Q1 is 1.

As a sub-embodiment of the foregoing embodiment, the Q2 frequency domain resources in this application are composed of P1-1 frequency domain resources, i.e., frequency domain resource #1, frequency domain resources #3, …, and frequency domain resource # P1, where Q2 is equal to P1-1.

As an embodiment, the second time domain resource in this application includes the given time domain resource.

As an embodiment, the second time domain resource in this application includes the third time domain resource.

As an embodiment, the second time domain resource in the present application includes a time domain resource occupied by the downlink wireless signal.

As an example, the MCOT is not less than 4 milliseconds.

As an example, the MCOT is not less than 8 milliseconds.

As an embodiment, the MCOT is related to a current subcarrier spacing of the first carrier.

Example 10

Embodiment 10 illustrates a schematic diagram of a target time slot and a second type of time slot, as shown in fig. 10. In fig. 10, a horizontal line filled box identifies a second type of time slot, and a thick line box identifies the target time slot.

In embodiment 10, the target time domain resource includes a plurality of second type time slots and at least one target time slot, the target time slot includes three second type time slots, and the duration of the target time slot is less than the duration of four second type time slots.

As an embodiment, the three second type slots are consecutive in the one first type slot.

As an embodiment, the start time of the earliest one of the three second-type slots is the start time of the one first-type slot.

As an embodiment, the time domain resource is the first time domain resource in this application.

As an embodiment, the time domain resource is the third time domain resource in this application.

As an embodiment, the target timeslot is the first time domain resource in this application.

As an embodiment, the target timeslot is the one timeslot of the first type in this application.

As an embodiment, the target timeslot is the one third type timeslot in this application.

Example 11

Embodiment 11 illustrates a schematic diagram of a multi-antenna based communication device, as shown in fig. 11.

In embodiment 11, the baseband processor is connected to M Radio Frequency chains (Radio Frequency chain), i.e., Radio Frequency chains #1, #2, …, # M-1, # M in fig. 11; the M radio frequency chains form M beam directions, i.e., a first beam direction, a second beam direction, …, an (M-1) th beam direction, and an mth beam direction, respectively.

For one embodiment, an antenna port group includes a positive integer number of antenna ports; one antenna port is formed by overlapping antennas in a positive integer number of antenna groups through antenna Virtualization (Virtualization); one antenna group includes a positive integer number of antennas. One antenna group is connected to the baseband processor through one RF (Radio Frequency) chain, and different antenna groups correspond to different RF chains. The mapping coefficients of all antennas in the positive integer number of antenna groups included by a given antenna port to the given antenna port constitute a beamforming vector corresponding to the given antenna port. Mapping coefficients of a plurality of antennas included in any given antenna group in the positive integer number of antenna groups included in the given antenna port to the given antenna port constitute an analog beamforming vector of the given antenna group. And the diagonal arrangement of the analog beamforming vectors corresponding to the positive integer number of antenna groups forms an analog beamforming matrix corresponding to the given antenna port. The mapping coefficients of the positive integer number of antenna groups to the given antenna port constitute a digital beamforming vector corresponding to the given antenna port. The beamforming vector corresponding to the given antenna port is obtained by multiplying an analog beamforming matrix corresponding to the given antenna port by a digital beamforming vector. Different antenna ports in one antenna port group are formed by the same antenna group, and different antenna ports in the same antenna port group correspond to different beam forming vectors.

As an embodiment, the one antenna port group is any one of the R antenna port groups in this application.

As an embodiment, the M radio frequency chains respectively correspond to M antenna ports; an antenna port is formed by superimposing one or more antennas connected by corresponding radio frequency chains through antenna Virtualization (Virtualization).

As an embodiment, the R antenna port groups in the present application collectively include M antenna ports, the M radio frequency chains respectively correspond to the M antenna ports, beam directions corresponding to the M antenna ports are the M beam directions, respectively, the baseband processor belongs to a base station device, and the M beam directions are for transmission.

As a sub-embodiment of the above-mentioned embodiment, M is equal to R, and each of the R antenna port groups includes only one antenna port.

As an embodiment, the one antenna port group is the first antenna port group in this application.

As a sub-embodiment of the above embodiment, the M beam directions are generated by the same analog beamforming vector.

As an embodiment, the first receiving parameter set in this application includes at least one receiving direction of the M beam directions; the energy detection in the first monitoring action in the present application is based on EIRP, that is, includes a beamforming gain corresponding to a corresponding beam direction; the baseband processor belongs to a user equipment, the M beam directions are for reception.

As an embodiment, the second receiving parameter set in this application includes at least one receiving direction of the M beam directions; the energy detection in the P1 monitoring behaviors in the present application is based on EIRP, that is, includes beamforming gains corresponding to corresponding beam directions; the baseband processor belongs to a base station device, the M beam directions are for reception.

As an embodiment, any one of the M beam directions corresponds to analog beamforming.

As an embodiment, the antennas in each of the partial radio frequency chains of the M radio frequency chains are superimposed by a first vector (corresponding to the M beam directions); further, all the rf chains of the M rf chains are superimposed by a second vector, i.e. a Kronecker product (Kronecker Products) of the first vector and the second vector forms the first set of receiving parameters.

As an embodiment, the antennas in each of the partial radio frequency chains of the M radio frequency chains are superimposed by a first vector (corresponding to the M beam directions); further, all the rf chains of the M rf chains are superimposed by a second vector, i.e. a Kronecker product (Kronecker Products) of the first vector and the second vector forms the second receiving parameter set.

Example 12

Embodiment 12 is a block diagram illustrating a configuration of a processing device in a user equipment, as shown in fig. 12. In embodiment 12, the user equipment 1200 includes a first receiving module 1201, a first listening module 1202, and a first sending module 1203.

In embodiment 12, the first receiving module 1201 receives R reference signal groups, which are respectively transmitted by R antenna port groups; the first listening module 1202 performs a first listening behavior in a first time domain resource on a first frequency domain resource using a first set of reception parameters; the first sending module 1203 sends the first information and the second information;

in embodiment 12, a first set of reception parameters is used for the first listening behavior, the first listening behavior being used to determine whether the first frequency domain resource is free for the first set of reception parameters; the first information indicates a first antenna port group from among the R antenna port groups to which the first reception parameter group is associated; the second information is used to indicate whether the first frequency domain resource is free for the first reception parameter group, or the second information is used to indicate that the first frequency domain resource is free for the first reception parameter group.

For an embodiment, the first receiving module 1201 receives a downlink wireless signal on at least one of P2 frequency-domain resources; wherein the first information is used to determine a second set of reception parameters, the second information being used to determine a third time domain resource; the second set of reception parameters is used for P1 listening behaviors, the P1 listening behaviors being performed in the third time domain resource on P1 frequency domain resources, respectively; the P1 listening behaviors are respectively used to determine whether the P1 frequency domain resources are idle for the second reception parameter group, and the P2 frequency domain resources of the P1 frequency domain resources are determined to be idle for the second reception parameter group.

For an embodiment, the first receiving module 1201 receives third information, where the third information is used to determine that Q1 frequency-domain resources are reserved for downlink transmission in a second time-domain resource, and Q1 is a positive integer; wherein any of the Q1 frequency domain resources is orthogonal in frequency domain to the first frequency domain resource, and the second time domain resource comprises the first time domain resource.

For an embodiment, the first receiving module 1201 receives the first wireless signal in the second time domain resource on at least one of the Q1 frequency domain resources using the first receiving parameter group.

For one embodiment, the first receiving module 1201 includes the antenna 452, the receiver 454, and the receiving processor 456 in fig. 4.

For one embodiment, the first receiving module 1201 includes at least one of the multi-antenna receive processor 458 and the controller/processor 459 of fig. 4.

For one embodiment, the first listening module 1202 includes the antenna 452, the receiver 454, and the receiving processor 456 of fig. 4.

For one embodiment, the first listening module 1202 includes the multi-antenna receive processor 458 of fig. 4.

For one embodiment, the first sending module 1203 includes the antenna 452, the transmitter 454, and the transmission processor 468 in fig. 4.

For one embodiment, the first transmit module 1203 includes at least one of the multi-antenna transmit processor 457 and the controller/processor 459 of fig. 4.

Example 13

Embodiment 13 is a block diagram illustrating a configuration of a processing device in a base station apparatus, as shown in fig. 13. In embodiment 13, the base station apparatus 1300 includes a second sending module 1301, a second receiving module 1302, and a second listening module 1303.

In embodiment 13, the second transmitting module 1301 transmits R reference signal groups, which are respectively transmitted by R antenna port groups; the second receiving module 1302 receives the first information and the second information; the second listening module 1303 respectively performs P1 listening behaviors in a third time domain resource on P1 frequency domain resources;

in embodiment 13, the first information is used to indicate a first antenna port group from among the R antenna port groups; a first set of receive parameters is associated to the first set of antenna ports, the first set of receive parameters being used for a first listening behavior performed in a first time domain resource on a first frequency domain resource, the first listening behavior being used to determine whether the first frequency domain resource is free for the first set of receive parameters; the second information is used to indicate whether the first frequency domain resource is free for the first reception parameter group, or the second information is used to indicate that the first frequency domain resource is free for the first reception parameter group; a second set of reception parameters is used for the P1 listening behaviors, the first information is used to determine the second set of reception parameters, the second information is used to determine the third time domain resource, the P1 listening behaviors are used to determine whether the P1 frequency domain resources are idle for the second set of reception parameters, respectively.

As an embodiment, how to determine the second set of reception parameters is implementation dependent, i.e. does not require standardization.

For an embodiment, the second sending module 1301 sends downlink wireless signals on P2 frequency domain resources of the P1 frequency domain resources; wherein the P2 frequency domain resources are determined to be idle for the second set of reception parameters.

For one embodiment, the second sending module 1301 includes the antenna 420, the transmitter 418, and the transmission processor 416 in fig. 4.

For one embodiment, the second sending module 1301 includes the multi-antenna transmission processor 471 and the controller/processor 475 of fig. 4.

For one embodiment, the second receiving module 1302 includes the antenna 420, the receiver 418, and the receiving processor 470 shown in fig. 4.

The second receiving module 1302 includes, for one embodiment, the multi-antenna receive processor 472 and the controller/processor 475 of fig. 4.

For one embodiment, the second listening module 1303 includes the antenna 420, the receiver 418, and the receiving processor 470 shown in fig. 4.

The second listening module 1303 includes the multi-antenna receive processor 472 and the controller/processor 475 of fig. 4, for one embodiment.

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

sending the first information and the second information;

wherein a first set of reception parameters is used for the first listening behavior, the first listening behavior being used to determine whether the first frequency domain resource is free for the first set of reception parameters; the first information is used to indicate a first antenna port group from the R antenna port groups to which the first reception parameter group is associated; the second information is used to indicate whether the first frequency domain resource is free for the first reception parameter group, or the second information is used to indicate that the first frequency domain resource is free for the first reception parameter group; the first information is used to determine a second set of reception parameters, the second information is used to determine a third time domain resource; the second set of reception parameters is used for P1 listening behaviors, the P1 listening behaviors being performed in the third time domain resource on P1 frequency domain resources, respectively; the P1 listening behaviors are respectively used by a sender of the downlink radio signal to determine whether the P1 frequency domain resources are idle for the second receiving parameter group, and the P2 frequency domain resources of the P1 frequency domain resources are determined to be idle for the second receiving parameter group.

2. The method of claim 1, comprising:

wherein any of the Q1 frequency domain resources is orthogonal in frequency domain to the first frequency domain resource, and the second time domain resource comprises the first time domain resource.

3. The method of claim 2, comprising:

4. The method of claim 3, comprising:

5. The method according to any one of claims 1 to 4, comprising:

6. The method of any of claims 1-4, wherein the first frequency-domain resources are deployed in an unlicensed spectrum, and wherein the first information and the second information are transmitted on a licensed spectrum.

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

receiving first information and second information;

wherein the first information is used to indicate a first antenna port group from the R antenna port groups; a first set of receive parameters is associated to the first set of antenna ports, the first set of receive parameters being used for a first listening behavior performed in a first time domain resource on a first frequency domain resource, the first listening behavior being used to determine whether the first frequency domain resource is free for the first set of receive parameters; the second information is used to indicate whether the first frequency domain resource is free for the first reception parameter group, or the second information is used to indicate that the first frequency domain resource is free for the first reception parameter group; a second set of reception parameters is used for the P1 listening behaviors, the first information is used for determining the second set of reception parameters, the second information is used for determining the third time domain resource, the P1 listening behaviors are respectively used by a sender of the downstream wireless signal for judging whether the P1 frequency domain resources are free for the second set of reception parameters; the P2 frequency domain resources are determined to be free for the second set of reception parameters.

8. The method of claim 7, comprising:

9. The method of claim 8, wherein the second information is used to indicate whether each of the Q2 frequency domain resources is free for the first set of reception parameters; q2 is a positive integer; the Q2 listening behaviors are used to determine whether Q2 frequency domain resources are free for the first set of reception parameters, respectively; the Q2 listening behaviors are performed in the first time domain resources on the Q2 frequency domain resources, respectively; any of the Q1 frequency-domain resources are orthogonal in frequency domain to any of the Q2 frequency-domain resources; the first set of reception parameters is used for the Q2 listening behaviors.

10. The method of claim 9, comprising:

11. The method according to any one of claims 7 to 10, comprising:

12. The method of any of claims 7 to 10, wherein the first frequency-domain resources are deployed in an unlicensed spectrum, and wherein the first information and the second information are transmitted on a licensed spectrum.

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

a first receiving module: receiving R reference signal groups, wherein the R reference signal groups are respectively sent by R antenna port groups; receiving downlink wireless signals on at least one of the P2 frequency domain resources;

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

a second sending module: transmitting R reference signal groups, wherein the R reference signal groups are respectively transmitted by R antenna port groups; transmitting downlink wireless signals on P2 frequency domain resources of P1 frequency domain resources;

a second receiving module: receiving first information and second information;

the second monitoring module: performing P1 listening behaviors in a third time domain resource on the P1 frequency domain resources, respectively; wherein the first information is used to indicate a first antenna port group from the R antenna port groups; a first set of receive parameters is associated to the first set of antenna ports, the first set of receive parameters being used for a first listening behavior performed in a first time domain resource on a first frequency domain resource, the first listening behavior being used to determine whether the first frequency domain resource is free for the first set of receive parameters; the second information is used to indicate whether the first frequency domain resource is free for the first reception parameter group, or the second information is used to indicate that the first frequency domain resource is free for the first reception parameter group; a second set of reception parameters is used for the P1 listening behaviors, the first information is used to determine the second set of reception parameters, the second information is used to determine the third time domain resource, the P1 listening behaviors are respectively used to determine whether the P1 frequency domain resources are free for the second set of reception parameters; the P2 frequency domain resources are determined to be free for the second set of reception parameters.