CN111416687A

CN111416687A - Method and apparatus used in communication device for channel sensing

Info

Publication number: CN111416687A
Application number: CN201910007724.1A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2019-01-04
Filing date: 2019-01-04
Publication date: 2020-07-14
Anticipated expiration: 2039-01-04
Also published as: CN111416687B

Abstract

A method and apparatus in a communication device used for channel sensing is disclosed. A first node transmits K wireless signals on a first sub-band; receiving K sets of parameters, the K sets of parameters being used to determine whether information blocks generating the K wireless signals are correctly received, respectively; performing channel sensing in Q1 time sub-pools of the first sub-band, respectively; wherein a starting time window occupied by a first wireless signal is a reference time window, a first set of parameters is used to determine whether the first wireless signal is correctly received, only the first set of parameters of the K sets of parameters is used to determine the Q1 time sub-pools; the first radio signal is the closest radio signal of the K radio signals that satisfies a target condition related to a frequency domain resource occupied by the initial transmission of the generated information block. The method and the device increase the channel access probability and improve the utilization rate of frequency spectrum resources.

Description

Method and apparatus used in communication device for channel sensing

Technical Field

The present application relates to transmission methods and apparatus in wireless communication systems, and more particularly, to channel aware transmission schemes and apparatus.

Background

As a key technology for unlicensed spectrum communication, L BT (L isten Before Talk) is widely adopted, among L AA (L authenticated Assisted Access) defined by 3GPP (3rd Generation Partner Project), the adjustment of CWS (Contention Window Size) depends on HARQ-ACK received in a reference subframe.

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 New air interface technology (NR, New Radio) (or 5G) is determined to be studied in 3GPP RAN #72 subcontracts, and standardization Work on NR starts after passing through WI (Work Item) of the New air interface technology (NR, New Radio) in 3GPP RAN #75 subcontracts.

In order to be able to adapt to diverse application scenarios and to meet different requirements, a research project of access to Unlicensed Spectrum (Unlicensed Spectrum) under NR is also passed on 3GPP RAN #75 universal meetings, which is expected to be completed in version R15, and then WI is started to standardize the related art in version R16.

Disclosure of Invention

In L TE (L ong Term Evolution ) L AA (L licensed Assisted Access), Before downlink transmission, in order to determine that an unlicensed spectrum is available, L TE base station (eNB) performs L BT (L intense form Talk, listen Before Talk) in an unlicensed frequency domain, in the process of Cat 4L BT (fourth type L BT, see 3GPP TR36.889), a transmitter (i.e., base station device in downlink) performs backoff after a certain delay period (Defer Duration), the backoff time is counted in units of CCA (Clear Channel Assessment) slots, the number of backoff slots is obtained by the transmitter performing random selection in CWS (Contention Window Size), and the HARQ feedback of the transmitter is adjusted according to HARQ feedback of CWS in a previous transmission on the unlicensed spectrum.

Multiple technologies introduced in 5G NR, such as HARQ (Hybrid Automatic Repeat reQuest) -ACK (acknowledgement) based on Coding Block Group (CBG), NarrowBand (NarrowBand) L BT, etc., may cause performance degradation of the existing CWS adjustment scheme, and therefore a new adjustment method for CWS needs to be designed.

It should be noted that although the present application was originally directed to unlicensed spectrum communication, the present application is also applicable to communication over licensed spectrum, such as V2V (Vehicle to Vehicle) communication, Grant Free (Grant Free) communication, and the like. Further, without conflict, the embodiments and features in the embodiments in the base station apparatus of the present application may be applied to the user equipment, and vice versa. Further, the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict.

The application discloses a method in a first node for wireless communication, comprising:

transmitting K wireless signals in a first time window set on a first sub-frequency band, wherein K is a positive integer, and the first time window set comprises positive integer time windows;

receiving K sets of parameters, the K sets of parameters being used to determine whether information blocks generating the K wireless signals are correctly received, respectively;

performing channel sensing in Q1 time sub-pools of a first sub-band to determine whether a channel is idle, respectively, wherein Q1 is a positive integer;

wherein a starting time window occupied by a first wireless signal is a reference time window, the first wireless signal is one of the K wireless signals, and the reference time window belongs to the first time window set in a time domain; a first information block is used for generating the first wireless signal, a first set of parameters is used for determining whether the first information block is correctly received, the first set of parameters is one of the K sets of parameters; only the first one of the K sets of parameters is used to determine the Q1 sub-pools of time; the first wireless signal is the latest wireless signal among the K wireless signals, which satisfies a target condition related to a frequency domain resource occupied by the initial transmission of the generated information block corresponding to the wireless signal.

As an example, when a retransmission and an initial transmission of a generated information block occur in a second sub-band and the first sub-band, respectively, a HARQ-ACK associated to the retransmission may implicitly embody interference information on the second sub-band, and thus the HARQ-ACK associated to the retransmission is not used for CWS adjustment. The method can avoid introducing the interference of the frequency domain resources outside the first sub-band into the CWS adjustment of the first sub-band, and keeps the fairness of channel intervention.

Specifically, according to one aspect of the present application, the target condition includes: the frequency domain resources occupied by the initial transmission of at least part of the information bits in the generated information block overlap with the first sub-band.

As an embodiment, the above method ensures that the initial transmission of the generated information block corresponding to the first parameter set can represent the interference level on the first subband, avoids the influence of excessive interference outside the first subband on CWS adjustment, and maintains fairness of channel access.

As an embodiment, the frequency domain resources occupied by the initial transmission of the at least part of the information bits in the generated information block belong to the first subband.

As an embodiment, the target conditions include: the sub-band occupied by any HARQ retransmission in which at least part of the information bits in the generated information block have occurred is the first sub-band.

As an embodiment, the target conditions include: the sub-band occupied by the initial transmission of the generated information block is the first sub-band.

As an embodiment, the target conditions include: the sub-band occupied by any HARQ retransmission of the generated information block that has occurred is the first sub-band.

As an embodiment, the at least part of the information bits in the generated information block includes a CBG.

As one embodiment, the generated information block includes CRC (Cyclic Redundancy Check) bits for the at least part of the information bits in the generated information block.

Specifically, according to one aspect of the present application, the target condition includes: a ratio of REs (Resource elements, Resource particles) occupied by the first transmission of the generated information block to the first sub-band exceeds a first threshold, and the first threshold is greater than 0 and not greater than 1.

As an embodiment, a portion of REs occupied by the first transmission of the generated information block is located outside the first sub-band.

As an embodiment, the above method ensures that as many HARQ-ACKs as possible are used for CWS adjustment, improving the accuracy of CWS adjustment.

As an embodiment, the above method ensures that the most recent HARQ-ACK is used for CWS adjustment, improving the accuracy of CWS adjustment.

For one embodiment, the first threshold is configurable.

As one embodiment, the first threshold is a constant.

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

if the channel is judged to be idle, a second wireless signal is started to be sent at the first moment on the first sub-frequency band; otherwise, abandoning the wireless transmission at the first moment on the first sub-band;

as an example, the first time instant is after the expiration time instant of the Q1 time sub-pools.

As one example, the first time is associated with the time position of the Q1 time sub-pools.

generating a first integer according to the first parameter set;

initializing a first counter to be Q2, the Q2 distributing probability is uniform among all integers between 0 and the first integer;

wherein the Q1 is 1 greater than the Q2.

Specifically, according to one aspect of the present application, the channel sensing performed in any one of the Q2 time sub-pools includes:

judging whether the first counter is 0 or not; if yes, stopping energy detection; if not, updating the first counter to be minus 1, executing energy detection in any time sub-pool to judge whether any time sub-pool is idle, and if any time sub-pool is considered to be busy, executing energy detection until an extended time sub-pool is considered to be idle;

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

sending K control signaling in the first time window set on the first sub-band, the K control signaling indicating the frequency domain resources occupied by the K wireless signals from the first frequency band respectively

Wherein the first sub-band belongs to the first frequency band, and the first frequency band includes frequency domain resources outside the first sub-band.

Specifically, according to an aspect of the present application, the first node is a base station device, or the first node is a user equipment.

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

a first transmitter: transmitting K wireless signals in a first time window set on a first sub-frequency band, wherein K is a positive integer, and the first time window set comprises positive integer time windows;

the first receiver: receiving K sets of parameters, the K sets of parameters being used to determine whether information blocks generating the K wireless signals are correctly received, respectively;

a first processor: performing channel sensing in Q1 time sub-pools of a first sub-band to determine whether a channel is idle, respectively, wherein Q1 is a positive integer;

As an example, the present application has the following main technical advantages:

-avoiding out-of-band interference affecting CWS adjustment, ensuring fairness of channel access;

-ensuring as much utilization of HARQ-ACK information as possible, improving the accuracy of CWS adjustment;

ensuring that the most recent HARQ-ACK is used for CWS adjustment improves the accuracy of the CWS adjustment.

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, made with reference to the accompanying drawings in which:

fig. 1 shows a flow diagram of wireless transmission 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 first node and a second node according to an embodiment of the application;

FIG. 6 illustrates a flow diagram for performing channel sensing to determine whether a channel is idle according to one embodiment of the present application;

FIG. 7 illustrates a flow diagram for energy detection in a target time sub-pool according to an embodiment of the present application;

FIG. 8 shows a schematic diagram of a plurality of wireless signals according to an embodiment of the present application;

FIG. 9 shows a schematic diagram of a wireless signal distributed over two sub-bands according to an embodiment of the present application;

FIG. 10 shows a schematic diagram of one of K parameter sets according to an embodiment of the present application;

FIG. 11 shows a schematic diagram of a time sub-pool according to an embodiment of the present application;

FIG. 12 shows a block diagram of a processing device in a first node according to an embodiment of the present application;

FIG. 13 illustrates a flow diagram for determining a first integer according to one embodiment of the present application;

fig. 14 shows a flowchart of determining whether to perform wireless transmission at a first time according to whether a channel is idle according to one embodiment of the present application.

Detailed Description

The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.

Example 1

Embodiment 1 illustrates a flow chart of wireless transmission, as shown in fig. 1.

In embodiment 1, a first node transmits K wireless signals in a first set of time windows on a first subband in step S100, where K is a positive integer and the first set of time windows includes a positive integer number of time windows; receiving K sets of parameters in step S101, the K sets of parameters being used to determine whether information blocks generating the K wireless signals are correctly received, respectively; channel sensing is performed in step S102 in Q1 time sub-pools of the first sub-band, respectively, to determine whether the channel is free, Q1 being a positive integer.

In embodiment 1, a starting time window occupied by a first wireless signal is a reference time window, the first wireless signal is one of the K wireless signals, and the reference time window belongs to the first time window set in a time domain; a first information block is used for generating the first wireless signal, a first set of parameters is used for determining whether the first information block is correctly received, the first set of parameters is one of the K sets of parameters; only the first one of the K sets of parameters is used to determine the Q1 sub-pools of time; the first wireless signal is the latest wireless signal among the K wireless signals, which satisfies a target condition related to a frequency domain resource occupied by the initial transmission of the generated information block corresponding to the wireless signal.

As an embodiment, any one of the K parameter sets includes a positive integer number of bits.

As a sub-embodiment of the above embodiment, each bit of the positive integer number of bits indicates whether a block of information bits is decoded correctly.

As an embodiment, the first set of parameters includes T bit fields, T being a positive integer greater than 1, each of the T bit fields including a positive integer number of bits, only 1 of the T bit fields indicating whether the first information block is correctly decoded.

As an embodiment, the wireless signal associated with at least one of the T bit-fields is transmitted on frequency-domain resources outside the first sub-band.

As an embodiment, K is greater than 1, and time domain resources occupied by any two wireless signals of the K wireless signals are orthogonal.

As an embodiment, K information blocks are used to generate the K wireless signals, respectively; each of the K information blocks includes a Cyclic Redundancy Check (CRC), and the first node determines whether the corresponding information block is correctly received according to the recovered CRC.

As an embodiment, any one of the K parameter sets includes a positive integer number of HARQ-ACKs.

As a sub-embodiment of the foregoing embodiment, the first node is a UE (User Equipment).

As one embodiment, any one of the K parameter sets includes a positive integer number of NDI (new data Indicator).

As a sub-embodiment of the above-mentioned embodiments, the first node is a base station device.

As a sub-embodiment of the foregoing embodiment, the NDI indicates whether the corresponding generated information block is correctly received in a toggle manner.

As an embodiment, the K wireless signals are all transmitted on a physical layer channel.

For one embodiment, the initial transmission of the generated information block corresponding to the phrase wireless signal includes: a first physical layer channel occupied by an information block for generating the wireless signal, wherein the information block for generating the wireless signal occupies a plurality of physical layer channels, and time domain resources occupied by any two physical layer channels of the plurality of physical layer channels are orthogonal.

As an embodiment, the phrase initial transmission of the generated information block corresponding to the wireless signal refers to HARQ initial transmission of the generated information block corresponding to the wireless signal.

As an embodiment, no HARQ-ACK associated to said one information block is sent by the second node, which is the target recipient of said K radio signals, before the initial transmission of the corresponding generated information block of said radio signal.

As an embodiment, no NDI associated to said one information block is sent by the second node prior to the initial transmission of the corresponding generated information block of said wireless signal, said second node being the target recipient of said K wireless signals.

As an embodiment, the first node is a base station apparatus, and the physical layer Channel is a PDSCH (physical downlink Shared Channel).

As an embodiment, the first node is a base station device, and the physical layer Channel is a short physical Downlink Shared Channel (sPDSCH).

As an embodiment, the first node is a User Equipment (UE), and the Physical layer Channel is a PUSCH (Physical Uplink Shared Channel).

As an embodiment, the first node is a UE, and the physical layer Channel is a short physical uplink Shared Channel (sPUSCH).

As an embodiment, the first node is a UE, and the physical layer CHannel is a psch (physical downlink Shared CHannel).

As an embodiment, for any one of the K radio signals, if the first transmission of the corresponding information block occurs

As an embodiment, at least one of the K wireless signals is an HARQ retransmission, and a frequency domain resource occupied by the initial transmission of the information block of the at least one wireless signal is outside the first sub-band.

As an embodiment, the first set of time windows comprises a plurality of time windows, the reference time window being one of the plurality of time windows.

As an embodiment, the time durations of the plurality of time windows are the same.

As an embodiment, there are at least two of the plurality of time windows that are different in duration.

As one embodiment, a duration of any one of the plurality of time windows does not exceed 1 millisecond.

As an embodiment, the reference time window comprises 14 multicarrier symbols.

As an embodiment, the reference time window consists of 14 multicarrier symbols consecutive in the time domain.

As an embodiment, the reference time window consists of 7 multicarrier symbols consecutive in the time domain.

As an embodiment, the multicarrier symbol is an OFDM (Orthogonal Frequency division multiplexing) symbol.

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

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

As an embodiment, a duration of any one of the plurality of time windows is related to a Sub Carrier Spacing (SCS) corresponding to the first Sub-band.

As an embodiment, at least one of the K wireless signals is an HARQ retransmission, and a frequency domain resource occupied by the initial transmission of the generation information block of the at least one wireless signal is outside the first sub-band.

As an embodiment, only a first wireless signal of the K wireless signals is transmitted in a reference time window.

As an embodiment, at least one of the K wireless signals is transmitted in the reference time window in addition to the first wireless signal.

As one embodiment, the first node does not wirelessly transmit on the first subband in a first set of time windows, except for the K wireless signals.

As one embodiment, the target recipient of the K wireless signals is the second node.

As an embodiment, the K wireless signals are all scrambled by an identity of the second node.

As an embodiment, the K wireless signals each include an identity of the second node.

As an embodiment, the identity of the second node is used to generate RS (Reference Signal) sequences of DMRSs (DeModulation Reference signals) for the K wireless signals.

As one embodiment, the identity of the second node is used to generate a CRC (Cyclic Redundancy Check) for the K wireless signals.

As one embodiment, the first node does not wirelessly transmit on the first subband for the second node in a first set of time windows, except for the K wireless signals.

As an embodiment, for each of the K radio signals, the corresponding information Block includes a positive integer number of TBs (Transport blocks), and the corresponding parameter set indicates whether each of the positive integer number of TBs is correctly received.

As one embodiment, any given wireless signal of the K wireless signals comprises L wireless sub-signals, wherein L is a positive integer, and the information block used for generating the any given wireless signal comprises L information sub-blocks, wherein the L information sub-blocks are respectively used for generating the L wireless sub-signals.

For one embodiment, each of the L information sub-blocks includes a positive integer number of bits.

As an embodiment, each of the L information sub-blocks includes a TB (transport block).

As an embodiment, each of the L information sub-blocks includes a CBG (Code block group).

As an embodiment, any one of the K wireless signals is output after Channel Coding (Channel Coding), Scrambling (Scrambling), Modulation Mapper (Modulation Mapper), layer Mapper (L layer Mapper), Precoding (Precoding), Resource element Mapper (Resource element Mapper), and wideband symbol Generation (Generation) sequentially by a corresponding bit block.

As an embodiment, any one of the K wireless signals is output after channel coding, scrambling, modulation mapper, layer mapper, precoding, resource element mapper, wideband symbol generation by a corresponding bit block.

As an embodiment, any one of the K wireless signals is output after channel coding, scrambling, modulation mapper, resource element mapper, and wideband symbol generation by a corresponding bit block.

As one embodiment, the first information block includes K1 information sub-blocks, the K1 being a positive integer.

As an embodiment, each of the K1 information blocks includes a positive integer number of bits.

As an embodiment, each of the K1 information blocks includes a TB (transport block).

As an embodiment, each of the K1 information blocks includes a CBG (Code block group).

As an embodiment, the determining that only the first set of parameters of the K sets of parameters of the sentence is used for the Q1 time sub-pools comprises: only the first one of the K sets of parameters is used to determine the Q1.

As an embodiment, the determining that only the first set of parameters of the K sets of parameters of the sentence is used for the Q1 time sub-pools comprises: only the first one of the K sets of parameters is used to determine the starting instant of the Q1 sub-pools of time.

As an embodiment, the determining that only the first set of parameters of the K sets of parameters of the sentence is used for the Q1 time sub-pools comprises: only the first one of the K sets of parameters is used to determine the starting time of the Q1 and the Q1 sub-pools of time.

As one embodiment, the Q1 time sub-pools are contiguous in the time domain.

As an embodiment, any two of the Q1 time sub-pools do not overlap in time domain.

As an example, the K1 is 1.

As one example, the K1 is greater than 1.

As an embodiment, the first set of parameters includes K1 bit fields, the K1 bit fields respectively indicating whether the K1 information blocks were correctly received, each bit field of the K1 bit fields including a positive integer number of bits.

As an embodiment, each of the K1 bit fields includes K2 bits, each of the K1 information blocks includes K2 information sub-blocks, and K2 bits in each of the K1 bit fields respectively indicate whether K2 information sub-blocks in the corresponding information block are correctly received.

As an example, if one of the K1 information blocks is not correctly received, the first set of parameters indicates NACK; otherwise the first set of parameters indicates ACK.

As an embodiment, the Channel Sensing is based on energy detection (EnergyDetection).

As an embodiment, the Channel Sensing is based on the detection of signature sequences.

As an embodiment, the Channel Sensing (Channel Sensing) is based on CRC validation.

As an embodiment, the first sub-band is one Carrier (Carrier).

As an embodiment, the first sub-band is a BWP (Bandwidth Part).

As an embodiment, the first sub-band is composed of a positive integer number of subcarriers (subcarriers) consecutive in the frequency domain.

For one embodiment, the bandwidth of the first sub-band is equal to 20 MHz.

For one embodiment, the bandwidth of the first sub-band is equal to 10 MHz.

As an embodiment, the bandwidth of the first sub-band is equal to 2.16 GHz.

As an embodiment, the first subband is composed of frequency domain resources occupied by a positive integer number of PRBs (Physical Resource blocks) in a frequency domain.

As one embodiment, the first sub-band portion belongs to unlicensed spectrum.

As an embodiment, the reference time window is one time Slot (Slot).

As an embodiment, the reference time window is a mini-slot.

Example 2

Embodiment 2 illustrates a schematic diagram of a Network architecture according to the present application, as shown in fig. 2, fig. 2 is a diagram illustrating NR 5G, L TE (L ong-Term Evolution, long Term Evolution) and L TE-a (L ong-Term Evolution Advanced) System Network architecture 200. NR 5G or L TE Network architecture 200 may be referred to as EPS (Evolved Packet System ) 200. EPS 200 may include one or more UE (User Equipment) 201, NG-RAN (next generation radio access Network) 202, EPC (Evolved Packet Core) 2, HSS/5G-CN (5G-Core, 5G Core Network) 210, RAN (Home Subscriber Server) 220 and Service 230. serving Gateway 201, MME serving Gateway 201, IMS/gprs Gateway 203, MME 201, msc/msc) which may provide access to Internet Service Gateway 201, msc/CN, msc.

As an embodiment, the gNB203 corresponds to the first node in this application.

As one embodiment, the gNB203 supports transmissions over unlicensed spectrum.

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

As an embodiment, the UE201 supports transmission on unlicensed spectrum.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a Radio protocol architecture according to one user plane and Control plane of the present application, as shown in fig. 3 is a schematic diagram illustrating an embodiment of a Radio protocol architecture for the user plane and Control plane, fig. 3 shows the Radio protocol architecture for a User Equipment (UE) and a base station device (gbb or eNB) with three layers, layer 1, layer 2 and layer 3 layer 1 (layer L) is the lowest layer and implements various PHY (physical layer) signal processing functions L layer 1 will be referred to herein as phyyc 301 layer 2 (layer L) 305 above PHY301 and is responsible for a link between the UE and gbb through PHY301 in the user plane L layer 305 includes a MAC (Medium Access Control ) sublayer 302, R L C (Radio L in Control, Radio link layer Control protocol) 303 and PDCP (Packet Control protocol) sublayer 303 and PDCP (Packet Control protocol) sublayer 303 and a handover Control protocol) layer 304, and a Radio protocol header for providing a buffer for buffer, a buffer for buffer for buffer.

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

As an embodiment, the K radio signals in this application are generated in the RRC 306.

As an example, the K wireless signals in this application are generated in the MAC 302.

As an example, the K wireless signals in this application are generated in the PHY 301.

As an embodiment, the K parameter sets in this application are generated in the PHY 301.

As an embodiment, the second wireless signal in this application is generated in the RRC 306.

As an example, the second wireless signal in this application is generated in the MAC 302.

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

Example 4

Embodiment 4 shows a schematic diagram of a base station device and a given user equipment according to the present application, as shown in fig. 4. Fig. 4 is a block diagram of a gNB410 in communication with a UE450 in an access network.

A controller/processor 440, a memory 430, a receive processor 412, a transmitter/receiver 416 and a transmit processor 415 may be included in the base station apparatus (410), the transmitter/receiver 416 includes an antenna 420. the upper layer packet arrival controller/processor 440, the controller/processor 440 provides packet header compression decompression, encryption decryption, packet segmentation connection and reordering, and multiplexing and demultiplexing between logical and transport channels to implement L2 layer protocols for the user plane and the control plane. data or control information, such as D L-SCH (Down L ink Shared CHannel) or U L-SCH (Up L ink Shared CHannel ) may be included in the upper layer packet, the transmit processor 415 implements various signal transmit processing functions for the L1 layer (i.e., physical layer) including encoding, interleaving, PDCCH, modulation, power control/allocation, precoding and physical layer control signaling (including PBCH (physical broadcast CHannel), physical control CHannel (physical control CHannel), precoding (physical layer), and physical layer control layer (physical layer) generation indication processing, HARQ processing, i.e., demodulation processing, HARQ processing, including receiving, decoding, HARQ processing, etc. (L1).

Included in the user equipment (UE450) are a controller/processor 490, a memory 480, a receive processor 452, a transmitter/receiver 456, a transmit processor 455, and a data source 467, the transmitter/receiver 456 including an antenna 460. the data source 467 provides upper layer packets to the controller/processor 490, the controller/processor 490 provides packet header compression decompression, encryption decryption, packet segmentation concatenation and reordering, and multiplexing and demultiplexing between logical and transport channels to implement L2 layer protocols for the user plane and the control plane, the upper layer packets may include data or control information, such as D L-SCH or U L-SCH, the transmit processor 455 implements various signal transmission processing functions for the L1 layer (i.e., the physical layer) including encoding, interleaving, scrambling, modulation, power control/allocation, precoding, and physical layer control signaling generation, etc.

As an embodiment, the first node in this application is the gNB 410.

As a sub-embodiment of the above-mentioned embodiment, the second node in this application is the UE 450.

As a sub-implementation of the above-described embodiment, the K parameter sets in the present application are K HARQ feedbacks, and the K HARQ feedbacks are sent by the transmission processor 455. the reception processor 452 performs various signal reception processing functions for the L1 layer (i.e., physical layer) including decoding, deinterleaving, descrambling, demodulation, de-precoding, and physical layer control signaling extraction, etc., the transmitter 456 is configured to convert a baseband signal provided by the transmission processor 455 into a radio frequency signal and transmit the radio frequency signal via the antenna 460, and the receiver 456 is configured to convert a radio frequency signal received by the antenna 460 into a baseband signal and provide the baseband signal to the reception processor 452.

As a sub-implementation of the above embodiments, in D L (Downlink), the upper layer packets D L-SCH include the K radio signals and the second radio signals in the present application, the upper layer packets D L-SCH are provided to controller/processor 440, controller/processor 440 implements L layer functions in D L, controller/processor 440 provides packet header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to UE450 based on various priority metrics, controller/processor 440 is also responsible for HARQ operation, retransmission of lost packets, and retransmission to UE 450. Transmit processor 415 implements various signal processing functions for L layer (i.e., physical layer). Signaling processing functions include decoding and interleaving to facilitate forward error correction (BPSK) at UE450 and control signal processing functions based on various modulation schemes (e.g., Binary Phase Shift (BPSK), Quadrature Phase Shift (QPSK), baseband signal processing (QPSK), mapping baseband signal processing to baseband signal processing, QPSK) to facilitate forward error correction at the UE450, and control signal processing by a transmitter/decoder to recover the corresponding received signal stream via a corresponding PSK symbol processing function, a BPSK processing function, a baseband processor 415, a baseband processor, a transmitter/processor, a transmitter, a receiver, a transmitter, a receiver, a transmitter, a receiver, and a receiver, a.

As a sub-embodiment of the above embodiment, the receiving of the K parameter sets in this application is performed by the receiving processor 412.

As a sub-embodiment of the above-described embodiment, the gNB410 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The gNB410 apparatus at least: transmitting K wireless signals in a first time window set on a first sub-frequency band, wherein K is a positive integer, and the first time window set comprises positive integer time windows; receiving K sets of parameters, the K sets of parameters being used to determine whether information blocks generating the K wireless signals are correctly received, respectively; performing channel sensing in Q1 time sub-pools of a first sub-band to determine whether a channel is idle, respectively, wherein Q1 is a positive integer; wherein a starting time window occupied by a first wireless signal is a reference time window, the first wireless signal is one of the K wireless signals, and the reference time window belongs to the first time window set in a time domain; a first information block is used for generating the first wireless signal, a first set of parameters is used for determining whether the first information block is correctly received, the first set of parameters is one of the K sets of parameters; only the first one of the K sets of parameters is used to determine the Q1 sub-pools of time; the first wireless signal is the latest wireless signal among the K wireless signals, which satisfies a target condition related to a frequency domain resource occupied by the initial transmission of the generated information block corresponding to the wireless signal.

As a sub-embodiment of the above 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: transmitting K wireless signals in a first time window set on a first sub-frequency band, wherein K is a positive integer, and the first time window set comprises positive integer time windows; receiving K sets of parameters, the K sets of parameters being used to determine whether information blocks generating the K wireless signals are correctly received, respectively; performing channel sensing in Q1 time sub-pools of a first sub-band to determine whether a channel is idle, respectively, wherein Q1 is a positive integer; wherein a starting time window occupied by a first wireless signal is a reference time window, the first wireless signal is one of the K wireless signals, and the reference time window belongs to the first time window set in a time domain; a first information block is used for generating the first wireless signal, a first set of parameters is used for determining whether the first information block is correctly received, the first set of parameters is one of the K sets of parameters; only the first one of the K sets of parameters is used to determine the Q1 sub-pools of time; the first wireless signal is the latest wireless signal among the K wireless signals, which satisfies a target condition related to a frequency domain resource occupied by the initial transmission of the generated information block corresponding to the wireless signal.

As a sub-embodiment of the above embodiment, the transmitter 416 (including the antenna 420), the transmit processor 415, and the controller/processor 440 are used to transmit the K wireless signals in this application.

As a sub-embodiment of the above embodiment, the transmitter 416 (including the antenna 420), the transmit processor 415, and the controller/processor 440 are used to transmit the second wireless signal in this application.

As a sub-embodiment of the above embodiment, the receiver 416 (including the antenna 420) and the receive processor 412 are used to receive the K1 HARQ feedbacks in this application.

As a sub-embodiment of the above-described embodiment, the receiver 416 (including the antenna 420), the receive processor 412, and the controller/processor 440 are used to perform channel sensing in each of the Q1 time sub-pools of the first sub-band.

As an embodiment, the first node in this application is the UE 450.

As a sub-embodiment of the above embodiment, the second node in this application is the gNB 410.

As a sub-implementation of the above-mentioned embodiment, the K parameter sets in the present application are K NDIs, and the K NDIs are transmitted by the transmission processor 415, the reception processor 412 implements various signal reception processing functions for the L1 layer (i.e., physical layer) including decoding, deinterleaving, descrambling, demodulation, de-precoding, and physical layer control signaling extraction, etc., the transmitter 416 is configured to convert the baseband signal provided by the transmission processor 455 into a radio frequency signal and transmit the radio frequency signal via the antenna 420, and the receiver 416 is configured to convert the radio frequency signal received by the antenna 420 into a baseband signal and provide the baseband signal to the reception processor 412.

As a sub-implementation of the above embodiments, in U L (Uplink, downlink), the upper layer packets U L-SCH include the K radio signals and the second radio signals in the present application, the upper layer packets U L-SCH are provided to controller/processor 490 implements L layer functions, in U L, controller/processor 490 provides packet header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, controller/processor 490 is also responsible for HARQ operations, retransmission of lost packets, transmit processor 455 implements various signal processing functions for L layer (i.e., physical layer), in U L, signal processing functions include decoding and interleaving to facilitate forward error correction (BPSK) at the gNB410 and modulation of baseband signals based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), divide the modulation symbols into parallel streams and map each stream to a corresponding multi-carrier sub-carrier and/or sub-carrier stream, and/or process the received signal via a BPSK channel, and control signal processing functions such as a control channel assignment by a transmitter/processor 412, a receiver/processor 450, a receiver may control receiver through a receiver 450, a receiver/processor 412, a receiver, a.

As a sub-embodiment of the above embodiment, the receiving of the K parameter sets in this application is performed by the receiving processor 452.

As a sub-embodiment of the above-mentioned embodiments, the UE450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The UE450 apparatus at least: transmitting K wireless signals in a first time window set on a first sub-frequency band, wherein K is a positive integer, and the first time window set comprises positive integer time windows; receiving K sets of parameters, the K sets of parameters being used to determine whether information blocks generating the K wireless signals are correctly received, respectively; performing channel sensing in Q1 time sub-pools of a first sub-band to determine whether a channel is idle, respectively, wherein Q1 is a positive integer; wherein a starting time window occupied by a first wireless signal is a reference time window, the first wireless signal is one of the K wireless signals, and the reference time window belongs to the first time window set in a time domain; a first information block is used for generating the first wireless signal, a first set of parameters is used for determining whether the first information block is correctly received, the first set of parameters is one of the K sets of parameters; only the first one of the K sets of parameters is used to determine the Q1 sub-pools of time; the first wireless signal is the latest wireless signal among the K wireless signals, which satisfies a target condition related to a frequency domain resource occupied by the initial transmission of the generated information block corresponding to the wireless signal.

As a sub-embodiment of the above-mentioned embodiments, the UE450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: transmitting K wireless signals in a first time window set on a first sub-frequency band, wherein K is a positive integer, and the first time window set comprises positive integer time windows; receiving K sets of parameters, the K sets of parameters being used to determine whether information blocks generating the K wireless signals are correctly received, respectively; performing channel sensing in Q1 time sub-pools of a first sub-band to determine whether a channel is idle, respectively, wherein Q1 is a positive integer; wherein a starting time window occupied by a first wireless signal is a reference time window, the first wireless signal is one of the K wireless signals, and the reference time window belongs to the first time window set in a time domain; a first information block is used for generating the first wireless signal, a first set of parameters is used for determining whether the first information block is correctly received, the first set of parameters is one of the K sets of parameters; only the first one of the K sets of parameters is used to determine the Q1 sub-pools of time; the first wireless signal is the latest wireless signal among the K wireless signals, which satisfies a target condition related to a frequency domain resource occupied by the initial transmission of the generated information block corresponding to the wireless signal.

As a sub-embodiment of the above embodiment, the transmitter 456 (including the antenna 460), the transmit processor 455, and the controller/processor 490 are used to transmit the K wireless signals in this application.

As a sub-embodiment of the above embodiment, the transmitter 456 (including the antenna 460), the transmit processor 455, and the controller/processor 490 are used to transmit the second wireless signal in this application.

As a sub-embodiment of the above embodiment, the receiver 456 (including the antenna 460) and the receive processor 452 are used to receive the K1 HARQ feedbacks in this application.

As a sub-embodiment of the above-described embodiment, receiver 456 (including antenna 460), receive processor 452, and controller/processor 490 are used to perform channel sensing in each of the Q1 time sub-pools of the first sub-band.

Example 5

Embodiment 5 illustrates a flow chart of communication between a first node and a second node, as shown in fig. 5. In fig. 5, the step in block F1 is optional.

For theFirst node N1In step S10, K control signaling are sent in a first time window set on the first frequency band, where the K control signaling respectively indicate frequency domain resources occupied by K wireless signals from the first frequency band, and K is a positive integer; transmitting the K wireless signals in the first set of time windows on the first sub-band in step S11, the first set of time windows including a positive integer number of time windows; receiving K sets of parameters in step S12, the K sets of parameters being used to determine whether information blocks generating the K wireless signals are correctly received, respectively; performing channel sensing in Q1 time sub-pools of the first sub-band to determine whether the channel is idle, respectively, in step S13, the Q1 being a positive integer;

in embodiment 5, a starting time window occupied by a first wireless signal is a reference time window, the first wireless signal is one of the K wireless signals, and the reference time window belongs to the first set of time windows in a time domain; a first information block is used for generating the first wireless signal, a first set of parameters is used for determining whether the first information block is correctly received, the first set of parameters is one of the K sets of parameters; only the first one of the K sets of parameters is used to determine the Q1 sub-pools of time; the first wireless signal is the latest wireless signal among the K wireless signals, which satisfies a target condition related to a frequency domain resource occupied by the initial transmission of the generated information block corresponding to the wireless signal. The first sub-band belongs to the first frequency band, and the first frequency band includes frequency domain resources outside the first sub-band.

As one embodiment, the first frequency band includes a plurality of sub-bands, and the first sub-band is one of the plurality of sub-bands.

As an embodiment, there is no one subcarrier belonging to any two of the plurality of subbands at the same time.

As an embodiment, the plurality of sub-bands correspond to the same sub-carrier spacing.

As an embodiment, the first Band is a BWP (Band Width Part).

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

As an embodiment, the first frequency band is composed of a plurality of consecutive subcarriers, and the first frequency band is composed of a plurality of consecutive subcarriers.

As one embodiment, the bandwidth of the first sub-band is the smallest frequency domain unit in which L BT is performed.

As an embodiment, the bandwidth of the first sub-band is 20MHz (megahertz).

As an embodiment, the K control signaling is K pieces of DCI (Downlink control information), respectively.

As an embodiment, the K control signaling is sent on a PDCCH (Physical Downlink control channel), the first node N1 is a base station device, and the second node N2 is a user equipment.

As an embodiment, the K wireless signals are transmitted on PDSCH, the first node N1 is a base station device, and the second node N2 is a user device.

As an embodiment, the K control signaling is sent on a PUCCH (Physical Uplink control channel), the first node is a user equipment, and the second node N2 is a base station device.

As an embodiment, the K radio signals are transmitted on a PUSCH, the first node is a user equipment, and the second node N2 is a base station equipment.

As one embodiment, the first node does not perform channel sensing on the first subband in the first time window.

As an embodiment, the first time window belongs to a COT (channel occupancy time) of the first node on the first frequency band.

As an embodiment, the duration of the first time window does not exceed the MCOT (Maximum COT).

As an embodiment, the target conditions include: the frequency domain resources occupied by the initial transmission of at least part of the information bits in the generated information block overlap with the first sub-band.

As an embodiment, the generated information block includes a TB (transport block), and the at least part of information bits in the generated information block includes a CBG.

As an embodiment, the target conditions include: the frequency domain resources occupied by the initial transmission of all information bits in the generated information block overlap with the first sub-band.

As an embodiment, the target conditions include: the frequency domain resources occupied by any one transmission of at least part of the information bits in the generated information block before the reference time window are overlapped with the first sub-frequency band.

As an embodiment, the target conditions include: and the proportion of the resource particles occupied by the first transmission of the generated information block, which are positioned in the first sub-frequency band, exceeds a first threshold, and the first threshold is greater than 0 and not greater than 1.

As one embodiment, the first threshold is 0.8.

As an embodiment, the first threshold is 0.5.

As an embodiment, the first node N1 is a base station device, the second node N2 is a user equipment, and the first node N1 is a maintaining base station of a serving cell of the second node N2.

As an embodiment, the first node N1 is a user equipment, the second node N2 is a base station equipment, and the second node N2 is a maintaining base station of a serving cell of the first node N1.

Example 6

Embodiment 6 illustrates a flow chart for performing channel sensing to determine whether a channel is idle, as shown in fig. 6.

The first node generates a first integer according to the first parameter set in step S61; initializing a first counter to be Q2 in step S62, the Q2 being uniformly distributed over all integers between 0 and the first integer, the Q1 being 1 greater than the Q2 in this application; in step S63, performing channel sensing in an extended time sub-pool, determining whether the extended time sub-pool is free, and if not, continuing to perform channel sensing in an extended time sub-pool until a free extended time sub-pool is found; if so, determining whether the first counter is 0 in step S64; if the judgment in the step S64 is YES, it is judged in step S66 that the channel is idle; if the determination result in the step S64 is no, updating the first counter to be minus 1 in step S65 (i.e., the value of the updated first counter is equal to the value of the first counter before updating-1), and performing energy detection in one time sub-pool to determine whether the one time sub-pool is idle; if the judgment result in the step S65 is yes, jumping to the step S64; if the determination result in the step S65 is negative, jumping to the step S63, i.e. performing energy detection until an extended time sub-pool is considered to be free;

in embodiment 6, in the channel sensing performed in a first temporal sub-pool, the first temporal sub-pool is considered to be free, the first temporal sub-pool being an earliest one of the Q1 temporal sub-pools; said Q2 is greater than 0; the Q2 time sub-pools are Q1-1 of the Q1 time sub-pools except the first time sub-pool.

For one embodiment, a random number generator is used to initialize a first counter as Q2.

As an embodiment, the first node sequentially initializes a first counter to 0, 1, 2.

As one embodiment, the channel sensing includes energy detection.

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

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

As an example, the duration of the extended time sub-pool is greater than the duration of any of the Q2 time sub-pools in the present application.

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

As an embodiment, the duration of the extended time sub-pool is related to the subcarrier spacing of the first subband.

As one embodiment, a duration of any one of the Q2 time sub-pools relates to a subcarrier spacing of the first subband.

As an example, the duration of the extended time sub-pool is equal to the duration of any of the Q2 time sub-pools in the present application.

As an example, the extended time sub-pool may not last more than 16 microseconds, and any one of the Q2 time sub-pools may not last more than 9 microseconds.

As one embodiment, the subcarrier spacing of the first subband is 15 kHz; the extended time sub-pool is 16 microseconds in duration and any one of the Q2 time sub-pools is 9 microseconds in duration.

As an example, the Q2 time sub-pools are Back-off times (Back-off times) in L BT for Cat 4.

As an embodiment, the Q2 Time sub-pools are CCA (Clear Channel Assessment) slots respectively included in a Back-off Time (Back-off Time) in L BT of Cat 4.

As an embodiment, the Q2 time sub-pools include CCA slots in the last delay period.

As an embodiment, the first node determines that the channel is busy if the first node cannot determine that the channel is idle until the first time.

For one embodiment, the first node determines that the channel is busy if the first node cannot determine that the channel is idle in the second time window.

As an embodiment, the first time instant is configured by higher layer signaling.

As an embodiment, the first time instant is configured by physical layer signaling.

As an embodiment, the duration of the second time window is configurable.

Example 7

Example 7 illustrates a flow chart for energy detection in a target time sub-pool, as shown in fig. 7.

The first node performs Energy Detection (Energy Detection) in one time slice in the target time sub-pool in step S701; determining whether the detected energy is less than a specific threshold in step S702; if yes, in step S703, it is determined that the time slice is idle; if not, it is determined in step S704 that the one time slice is busy.

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

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

As an embodiment, the specific threshold is related to a transmission power of the second wireless signal.

As one embodiment, the particular threshold is configurable.

As one embodiment, the specific threshold is a constant.

As an embodiment, the target time sub-pool comprises a plurality of consecutive time slices; the steps of fig. 7 are performed in each of the plurality of consecutive time slices; the target time sub-pool is considered to be free if all of the plurality of consecutive time slices are considered to be free, otherwise the target time sub-pool is considered to be busy.

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

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

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

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

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

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

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

As an embodiment, the duration of the target time sub-pool exceeds the duration of one time slice; the steps of FIG. 7 are performed separately in each of at least one time slice in the target sub-pool of time; the target time sub-pool is considered to be free if each of the at least one time slice is considered to be free, otherwise the target time sub-pool is considered to be busy.

As a sub-embodiment of the above embodiment, the target time sub-pool is any one of the Q2 time sub-pools in this application.

For one embodiment, the energy detection includes monitoring received power.

As an embodiment, the energy detection conforms to the approach defined in section 15 of 3GPP TS 36.213.

As an example, the energy detection is energy detection in L BT (L isten Before Talk, listen Before issue).

As an embodiment, the energy detection is implemented by an energy detection manner in WiFi.

As an embodiment, the energy detection comprises RSSI (Received Signal strength indication) measurements.

As an example, the detection result of the energy detection has a unit of dBm (decibel).

As one example, the detection result of the energy detection is in units of milliwatts.

As one example, the unit of the detection result of the energy detection is joule.

As one embodiment, the particular threshold is equal to or less than-72 dBm.

Example 8

Example 8 illustrates a schematic diagram of a plurality of wireless signals, as shown in fig. 8. In fig. 8, each radio signal occupies a plurality of REs (Resource elements).

In embodiment 8, the first frequency band includes W sub-bands, i.e., the first sub-band, the second sub-band, the W sub-band in fig. 8, where W is a positive integer greater than 1; the first node transmits K wireless signals, namely a wireless signal #1, a wireless signal #2, a wireless signal #3 and a wireless signal #4, in a first set of time windows on a first sub-band, where K is 4; the four transport blocks are used to generate a radio signal #1, a radio signal #2, a radio signal #3, and a radio signal #4, respectively.

As an example, the wireless signal # a, the wireless signal # c, the wireless signal # d, and the wireless signal # b are HARQ initial transmissions corresponding to the wireless signal #1, the wireless signal #2, the wireless signal #3, and the wireless signal #4, respectively; wherein the radio signal # c and the radio signal # b are not transmitted on the first sub-band, i.e. do not satisfy the target condition, and therefore neither the radio signal #2 nor the radio signal #4 satisfies the target condition that the frequency domain resources occupied by the first transmission of the generated information block corresponding to the radio signal are derived from the first sub-band; the wireless signal # a and the wireless signal # c are transmitted on the first sub-band, so the wireless signal #1 and the wireless signal #3 satisfy a target condition that "the frequency domain resource occupied by the first transmission of the generation information block corresponding to the wireless signal belongs to the first sub-band", wherein the time window occupied by the wireless signal # c is the latest one in the first time window set, which satisfies the target condition; the first radio signal in this application is the radio signal #3 and the reference time window in this application is the time window occupied by the radio signal # 3.

As an embodiment, the wireless signal # a corresponds to the HARQ initial transmission of the wireless signal #1, and the wireless signal # d, the wireless signal # b and the wireless signal #4 are the HARQ initial transmission, the second HARQ transmission and the third HARQ transmission of the same bit block, respectively; the HARQ initial transmissions corresponding to radio signal #2 and radio signal #3 are not on the first subband. The target condition that the frequency domain resources occupied by all HARQ transmissions (including the initial transmission) that have occurred to generate an information block corresponding to a radio signal are derived from the first sub-band is not satisfied by any of the radio signal #2, the radio signal #3, and the radio signal #4, and therefore the first radio signal in this application is the radio signal #1, and the reference time window in this application is the time window occupied by the radio signal # 1.

As an embodiment, any one of the radio signal #1, the radio signal #2, the radio signal #3, and the radio signal #4 is transmitted in the same Slot (Slot) with the associated parameter set.

As an embodiment, the HARQ retransmission uses CC (Chase Combining), i.e. the HARQ retransmission and the HARQ initial transmission carry the same coded bits (coded bits).

As an embodiment, the HARQ retransmission adopts IR (Incremental Redundancy), that is, the HARQ retransmission and the HARQ initial transmission can correspond to different RVs (Redundancy Version).

Example 9

Embodiment 9 illustrates a schematic diagram of a wireless signal distributed on two sub-bands, as shown in fig. 9.

In embodiment 9, the wireless signal corresponding to the first transmission of the generated information block includes a first wireless sub-signal and a second wireless sub-signal; the first and second wireless sub-signals are transmitted on first and second sub-bands, respectively.

As an embodiment, the first and second wireless sub-signals occupy X1 REs and X2 REs, respectively, the target condition in this application includes that X1/(X1+ X2) exceeds a first threshold, which is greater than 0 and not greater than 1.

As one embodiment, the first threshold is 0.8.

Example 10

Example 10 illustrates a schematic diagram of one of K parameter sets, as shown in fig. 10.

In example 10, a parameter set includes s bit fields, i.e., bit field #1, bit field #2,. and bit field # s; the s is a positive integer, each of the s bit fields comprising a positive integer number of bits; if s is 1, the one parameter set consists of bit field # 1.

As an embodiment, one of the K wireless signals corresponding to the one parameter set includes s wireless sub-signals, and the s bit fields respectively indicate whether the s wireless sub-signals are correctly received.

As an embodiment, the s wireless sub-signals respectively comprise s CBGs.

As an embodiment, the s radio sub-signals respectively comprise s TBs.

For one embodiment, the s bit fields respectively indicate whether s wireless signals are correctly received; one of the K wireless signals corresponding to the one parameter set is one of the s wireless signals.

As an example, the s radio signals are transmitted on s serving cells, respectively.

As an example, the s radio signals are transmitted on s carriers, respectively.

As an embodiment, the s wireless signals are transmitted on s BWPs, respectively.

As an embodiment, each bit in the s bit field is a HARQ-ACK.

As an embodiment, each bit in the s bit fields is an NDI.

Example 11

Example 11 illustrates a schematic diagram of a time sub-pool, as shown in fig. 11. In fig. 11, a box marked by a bold line represents a time sub-pool, and a box filled with a horizontal line represents a time slice. The one time sub-pool includes a plurality of time slices.

As an embodiment, the duration of said one time sub-pool cannot be divided exactly by the duration of said time slices, i.e. said one time sub-pool cannot be divided exactly into a positive integer number of time slices.

As an embodiment, the one time sub-pool is any one of the Q1 time sub-pools in the present application.

As an example, the duration of the one time sub-pool is 16 microseconds.

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

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

Example 12

Embodiment 12 is a block diagram illustrating a configuration of a processing device in a first node, as shown in fig. 12. In fig. 12, the processing means 1200 in the first power saving is mainly composed of a first transmitter 1201, a first receiver 1202 and a first processor 1203.

A first transmitter 1201 transmits K wireless signals in a first time window set on a first subband, where K is a positive integer and the first time window set includes positive integer number of time windows; first receiver 1202 receives K sets of parameters that are used to determine whether information blocks that generate the K wireless signals, respectively, were received correctly; the first processor 1203 respectively performs channel sensing in Q1 time sub-pools of the first sub-band to determine whether a channel is idle, where Q1 is a positive integer;

in embodiment 12, a starting time window occupied by a first wireless signal is a reference time window, the first wireless signal is one of the K wireless signals, and the reference time window belongs to the first set of time windows in a time domain; a first information block is used for generating the first wireless signal, a first set of parameters is used for determining whether the first information block is correctly received, the first set of parameters is one of the K sets of parameters; only the first one of the K sets of parameters is used to determine the Q1 sub-pools of time; the first wireless signal is the latest wireless signal among the K wireless signals, which satisfies a target condition related to a frequency domain resource occupied by the initial transmission of the generated information block corresponding to the wireless signal.

As an embodiment, the target conditions include: and the proportion of the resource particles occupied by the first transmission of the generated information block, which are positioned in the first sub-frequency band, exceeds a second threshold value, and the second threshold value is greater than 0 and not greater than 1.

As an embodiment, if the channel is determined to be idle, the first transmitter 1201 transmits the second wireless signal at the first time on the first sub-band; otherwise, the first transmitter 1201 abandons the wireless transmission at the first time instant on the first sub-band.

As an embodiment, the first processor 1203 generates a first integer according to the first parameter set; initializing a first counter to be Q2, the Q2 distributing probability is uniform among all integers between 0 and the first integer; wherein the Q1 is 1 greater than the Q2.

As one embodiment, the channel sensing performed in any one of the Q2 time sub-pools includes:

As an embodiment, the first transmitter 1201 sends K control signaling in the first time window set on the first frequency sub-band, where the K control signaling indicates frequency domain resources occupied by the K wireless signals from the first frequency band, respectively; wherein the first sub-band belongs to the first frequency band, and the first frequency band includes frequency domain resources outside the first sub-band.

As an embodiment, the first node is a base station apparatus.

As a sub-embodiment of the foregoing embodiment, the transmission channel corresponding to the K wireless signals is D L-SCH.

As a sub-embodiment of the above embodiment, the K parameter sets are transmitted on the PUCCH.

As a sub-embodiment of the above embodiment, each of the K parameter sets comprises HARQ-ACK.

As a sub-embodiment of the above embodiment, the first transmitter 1201 includes the transmitter 416 (including the antenna 420), the transmit processor 415, and the controller/processor 440 of fig. 4.

As a sub-embodiment of the above-described embodiment, the first receiver 1202 includes the receiver 416 (including the antenna 420) and the receive processor 412 of fig. 4 of the present application.

As a sub-embodiment of the above embodiment, the first receiver 1202 includes the controller/processor 440 of fig. 4 of the present application.

As a sub-embodiment of the above-mentioned embodiment, the first processor 1203 includes the receiver 416 (including the antenna 420) and the receiving processor 412 in fig. 4 of this application.

As a sub-embodiment of the above embodiment, the first processor 1203 includes the controller/processor 440 of fig. 4 of the present application.

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

As a sub-embodiment of the above embodiment, the transmission channel corresponding to the K wireless signals is U L-SCH.

As a sub-embodiment of the above embodiment, the K parameter sets are transmitted on the PDCCH.

As a sub-embodiment of the above embodiment, each of the K parameter sets includes an NDI.

For one embodiment, the duration of the first time sub-pool is greater than the duration of any of the Q2 time sub-pools.

As an example, the Q2 is greater than 1, and the Q2 time sub-pools are all the same duration.

As one embodiment, the channel sensing includes energy detection.

As an embodiment, the determining that only the first set of parameters of the K sets of parameters of the sentence is used for the Q1 time sub-pools comprises: only the first one of the K sets of parameters is used to determine Q2, the Q1 being 1 greater than the Q2.

As an embodiment, the determining that only the first set of parameters of the K sets of parameters of the sentence is used for the Q1 time sub-pools comprises: the Q1 is independent of ones of the K parameter sets other than the first parameter set; the Q1 relates to whether a proportion of HARQ-NACKs in the first set of parameters exceeds a second threshold.

As a sub-embodiment of the above embodiment, the first transmitter 1201 includes the transmitter 456 (including the antenna 460), the transmission processor 455, and the controller/processor 490 of fig. 4.

As a sub-embodiment of the above-described embodiments, the first receiver 1202 includes the receiver 456 (including the antenna 460) and the receive processor 452 of fig. 4 of the present application.

As a sub-embodiment of the above embodiment, the first receiver 1202 includes the controller/processor 490 of fig. 4 of the present application.

As a sub-embodiment of the above embodiment, the first processor 1203 includes the receiver 456 (including the antenna 460) and the receiving processor 452 in fig. 4 of the present application.

As a sub-embodiment of the above embodiment, the first processor 1203 includes the controller/processor 490 of fig. 4 of the present application.

Example 13

Embodiment 13 illustrates a flow chart for determining the first integer, as shown in fig. 13.

The first node determines in step S1301 whether the NACK proportion in the target parameter set is not less than a second threshold; if the judgment result in the step S1301 is negative, jumping to step S1305, that is, adjusting the first integer to be the allowed minimum value; if the judgment result of the step S1301 is yes, in step S1302, judging whether the first integer is smaller than the allowed maximum value; if the determination result in step S1302 is yes, in step S1303, the first integer is adjusted to a next allowable higher value; if the determination result in the step S1302 is negative, the first integer is maintained unchanged in step S1304.

As an embodiment, higher layer signaling is used to configure a set of integers consisting of allowed values.

As an embodiment, the higher layer signaling is RRC layer signaling.

As one embodiment, the second threshold is 0.8.

As an example, the allowed value of the first integer is related to a Channel access priority Class (Channel access priority Class).

As an example, if the channel access priority level is 1, the allowed values include 3 and 7.

As an example, if the channel access priority level is 2, the allowed values include 7 and 15.

As an example, if the channel access priority level is 3, the allowed values include 15, 31, and 15.

For one embodiment, if the channel access priority level is 4, the allowed values include 15, 31, 63, 127, 255, 511, and 1023.

Example 14

Embodiment 14 illustrates a flowchart of determining whether to perform wireless transmission at a first time according to whether a channel is idle, as shown in fig. 14.

The first node determines whether the channel is idle in step S1401; if so, the second wireless signal is started to be transmitted at the first time on the first sub-band in step S1402; if not, the wireless transmission at the first time on the first sub-band is abandoned in step S1403.

As an embodiment, the step S1403 includes: maintaining zero transmit power at the first time on the first sub-band.

As an embodiment, the step S1403 includes: and buffering the information bit corresponding to the second wireless signal to wait for the next transmission opportunity.

As an embodiment, the step S1403 includes: and continuing to perform channel sensing operation to determine time-frequency resources which can be used for transmitting information bits corresponding to the second wireless signal.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The UE or the terminal in the present application includes, but is not limited to, a mobile phone, a tablet, a notebook, a network card, a low power consumption device, an eMTC device, an NB-IoT device, a vehicle-mounted communication device, and other wireless communication devices. 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, 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 first node for wireless communication, comprising:

2. The method of claim 1, wherein the target conditions comprise: the frequency domain resources occupied by the initial transmission of at least part of the information bits in the generated information block overlap with the first sub-band.

3. The method according to claim 1 or 2, wherein the target conditions comprise: and the proportion of the resource particles occupied by the first transmission of the generated information block, which are positioned in the first sub-frequency band, exceeds a first threshold, and the first threshold is greater than 0 and not greater than 1.

4. A method according to any one of claims 1 to 3, characterized by comprising:

if the channel is judged to be idle, a second wireless signal is started to be sent at the first moment on the first sub-frequency band; otherwise, the wireless transmission at the first time on the first sub-band is abandoned.

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

generating a first integer according to the first parameter set;

wherein the Q1 is 1 greater than the Q2.

6. The method of claim 5, wherein the channel sensing performed in any one of the Q2 time sub-pools comprises:

7. The method according to any one of claims 1-6, comprising:

sending K control signaling in the first time window set on the first sub-band, where the K control signaling indicates frequency domain resources occupied by the K wireless signals from a first frequency band, respectively;

8. The method according to any of claims 1-7, wherein the first node is a base station device or the first node is a user equipment.

9. A first node for wireless communication, comprising:

10. The first node of claim 9, wherein the target condition comprises: the frequency domain resources occupied by the initial transmission of at least part of the information bits in the generated information block overlap with the first sub-band.

11. The first node according to claim 9 or 10, wherein the target condition comprises: and the proportion of the resource particles occupied by the first transmission of the generated information block, which are positioned in the first sub-frequency band, exceeds a first threshold, and the first threshold is greater than 0 and not greater than 1.

12. The first node according to any of claims 9 to 11, characterized by:

if the channel is judged to be idle, the first transmitter transmits a second wireless signal at the first moment on the first sub-band; otherwise, the first transmitter abandons the wireless transmission at the first time instant on the first sub-band.

13. The first node according to any of claims 9 to 12, characterized by:

the first processor generating a first integer according to the first parameter set; initializing a first counter to be Q2, the Q2 distributing probability is uniform among all integers between 0 and the first integer;

wherein the Q1 is 1 greater than the Q2.

14. The first node of claim 13, wherein the channel sensing performed in any one of the Q2 time sub-pools comprises:

15. The first node according to any of claims 9-14, comprising:

a first transmitter transmits K control signaling in the first time window set on the first sub-band, wherein the K control signaling respectively indicates frequency domain resources occupied by the K wireless signals from a first frequency band;

16. The first node according to any of claims 9-15, wherein the first node is a base station device or the first node is a user equipment.