CN111642013B

CN111642013B - Method and apparatus in a node for wireless communication

Info

Publication number: CN111642013B
Application number: CN201910157984.7A
Authority: CN
Inventors: 蒋琦; 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2019-03-02
Filing date: 2019-03-02
Publication date: 2023-05-02
Anticipated expiration: 2039-03-02
Also published as: CN111642013A

Abstract

A method and apparatus in a node for wireless communication is disclosed. The first node firstly receives K3 first sub-wireless signals in K3 sub-frequency bands in K1 sub-frequency bands in a first time unit, and then receives K4 second sub-wireless signals in K4 sub-frequency bands in K2 sub-frequency bands in a second time unit; a first sub-band of the K1 sub-bands is reserved for a first target sub-wireless signal and is occupied at the first time unit; the sub-frequency band occupied by the bit sub-block corresponding to the first target sub-wireless signal in the second time window is determined through the first sub-frequency band; according to the method and the device, a transmission block on an unlicensed spectrum of a plurality of sub-bands comprises a plurality of code block group scenes, and frequency domain mapping of the code block groups is optimized through a channel sensing result, so that transmission performance is improved.

Description

Method and apparatus in a node for wireless communication

Technical Field

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

Background

LBT (Listen Before Talk, listen-before-talk) is widely adopted as a key technology for communication in unlicensed spectrum. In LAA (Licensed Assisted Access, grant assisted access) defined by 3GPP (3 rd Generation Partner Project, third generation partnership project), scheduling often occurs earlier than LBT, and there are cases where transmission is not achieved because LBT does not pass.

Future wireless communication systems have more and more diversified application scenes, and different application scenes have different performance requirements on the system. In order to meet different performance requirements of various application scenarios, research on a New air interface technology (NR, new Radio) (or 5G) is decided on a 3gpp ran (Radio Access Network ) #72 full-meeting, and a WI (Work Item) of the New air interface technology (NR, new Radio) is passed on the 3gpp ran #75 full-meeting, so that standardized operation on NR is started.

In order to be able to accommodate diverse application scenarios and to meet different requirements, a study of access to unlicensed spectrum (Unlicensed Spectrum) under NR is also performed on the 3gpp ran #75 full meeting, which is expected to be completed in R15 version, and then WI is started in R16 version to standardize the related art.

Disclosure of Invention

In the current NR system, especially in a scenario with a high requirement on transmission performance, such as a URLLC (Ultra-Reliable and Low Latency Communications, ultra high reliability and low latency communication) scenario, the reliability of a signal is often improved by HARQ-ACK (Hybrid Automatic Repeat request-Acknowledgement) and repeated (retransmission) transmission. In a sub-band-based LAA system, in order to improve the sub-band utilization rate and prevent the situation that the entire frequency band cannot be used because one sub-band is occupied, a common method is to split one TB (Tranmission Block, transmission Block) into a plurality of CBGs (Code Block groups), and each sub-band only transmits one CBG, so long as there is a sub-band that is idle, although the scheduling decision is earlier than LBT, it can still be ensured that the corresponding CBG of the scheduling can be transmitted on the idle sub-band, so as to improve the overall spectrum efficiency.

When a mechanism of retransmission or Repetition is introduced in a subband LAA system to improve transmission performance, how to map CBGs that need to be transmitted between primary transmission and retransmission, and how to map CBGs that need to be transmitted between multiple repetitions of one transmission will be a problem to be discussed.

In view of the above, the present application discloses a solution. It should be noted that, in the case of no conflict, the embodiments of the first node and the second node and features in the embodiments of the present application may be applied to the base station and the UE (User Equipment), and at the same time, in the case of no conflict, the embodiments of the present application and features in the embodiments of the present application may be arbitrarily combined with each other.

The application discloses a method used in a first node of wireless communication, characterized by comprising:

receiving K3 first sub-wireless signals in K3 sub-bands among K1 sub-bands in the first time unit, respectively;

receiving K4 second sub-wireless signals in K4 sub-bands among K2 sub-bands in the second time unit, respectively;

the K1 sub-frequency bands are reserved for the K1 first sub-wireless signals respectively, and the K1 first sub-wireless signals comprise any one of the K4 first sub-wireless signals; the K2 sub-frequency bands are reserved for the K2 second sub-wireless signals respectively, and the K2 second sub-wireless signals comprise any one of the K4 second sub-wireless signals; a first sub-band being one of the K1 sub-bands and being other than the K3 sub-bands, the first sub-band being occupied in the first time unit, the first sub-band being reserved for a first target sub-radio signal of the K1 first sub-radio signals; a second sub-band is one of the K4 sub-bands, the second sub-band being idle in the second time unit, the second sub-band being used for transmitting a second target sub-radio signal of the K2 second sub-radio signals; the first target sub-radio signal and the second target sub-radio signal are both used to carry target bit sub-blocks; the first sub-band is used to determine the second sub-band; the K1 sub-bands are all deployed in unlicensed spectrum, and the K2 sub-bands are all deployed in unlicensed spectrum; the K1 and the K2 are positive integers greater than 1; the K3 is a positive integer less than the K1, and the K4 is a positive integer not greater than the K2.

As an embodiment, one benefit of the above method is that: when the first time unit and the second time unit are respectively aimed at transmission and retransmission of one TB, the CBG (i.e. the target bit sub-block) corresponding to the wireless signal which is not passed by the LBT is not mapped to the sub-band (i.e. the first sub-band) which is not passed by the primary transmission during retransmission, so that the CBG which is not passed by the LBT is ensured to be retransmitted on the sub-band which is the most stable and has the least interference, and the overall transmission performance is improved.

As an embodiment, another benefit of the above method is that: when the first time unit and the second time unit are respectively repeated for two times of one TB, CBGs reserved on the sub-frequency bands which are not passed by the LBT are mapped to the sub-frequency bands which are passed by the LBT, and the mapping of the CBGs accords with a certain rule so as to ensure the transmission performance.

According to an aspect of the present application, the above method is characterized in that each of the K3 subbands is idle in the first time unit, and the first subband is a subband out of the K1 subbands and out of the K3 subbands; the K4 subbands are each free in the second time unit, and the second subband is one of the K4 subbands.

According to an aspect of the present application, the method is characterized in that K4 is greater than 1, the start time of the second time unit is later than the end time of the first time unit, the K4 subbands are used to transmit K4 second sub-radio signals of the K2 second sub-radio signals, respectively, and a given second sub-radio signal exists in the K4 second sub-radio signals, and the given second sub-radio signal and the second target sub-radio signal use different redundancy versions.

As an embodiment, the above method has the following advantages: in the conventional transmission based on Repetition, all CBGs in one Repetition adopt the same RV, and in the method in the present application, because CBGs that have not passed by an LBT occupy a subband corresponding to a CBG passed by an LBT, further CBGs mapped onto a subband passed by an LBT in a second Repetition are shifted backward in the time domain, and further in a time domain resource occupied by the second Repetition, CBGs corresponding to a scheduled first Repetition and CBGs corresponding to a scheduled second Repetition are mapped at the same time, and different RVs (Redundancy Version, redundancy versions) are adopted.

According to an aspect of the present application, the above method is characterized in that the first bit block includes K1 bit sub-blocks, the target bit sub-block is one of the K1 bit sub-blocks, the K1 first sub-radio signals are respectively used to carry the K1 bit sub-blocks, and the first bit block corresponds to one HARQ process number.

According to one aspect of the present application, the above method is characterized by comprising:

transmitting first information;

wherein the first information is used to determine that the first target sub-wireless signal was not received correctly; the starting time of the second time unit is later than the sending time of the first information.

As an embodiment, the above method is characterized in that: the first time unit and the second time unit are respectively a primary transmission and retransmission for one TB, and HARQ-ACK for the primary transmission has been obtained before the retransmission.

receiving a first signaling;

wherein the first signaling is used to determine the K3 subbands.

As an embodiment, the above method is characterized in that: before initial transmission, the first node is informed of which sub-bands are idle through LBT through a first signaling, so that the power consumption of the first node is reduced, and false detection is avoided.

receiving a second signaling;

wherein the second signaling is used to determine the K4 subbands.

As an embodiment, the above method is characterized in that: before retransmission, the first node is informed of which sub-bands pass through LBT through a second signaling, so that the power consumption of the first node is reduced, and false detection is avoided.

operating a third signaling;

the third signaling comprises HARQ process numbers corresponding to the K1 first sub-wireless signals; the operation is a reception or the operation is a transmission.

As an embodiment, the essence of the method is that: the third signaling is scheduling signaling of the K1 first sub-radio signals.

operating a fourth signaling;

the fourth signaling comprises the HARQ process numbers corresponding to the K2 second sub-wireless signals; the operation is a reception or the operation is a transmission.

As an embodiment, the essence of the method is that: the fourth signaling is scheduling signaling of the K2 second sub-radio signals.

The application discloses a method used in a second node of wireless communication, characterized by comprising the following steps:

transmitting K3 first sub-wireless signals in K3 sub-bands among K1 sub-bands in the first time unit, respectively;

transmitting K4 second sub-wireless signals in K4 sub-bands among K2 sub-bands in the second time unit, respectively;

performing channel sensing in the K1 subbands to determine whether a channel is idle;

wherein the channel awareness is used to determine that the K3 of the K1 subbands are idle.

performing channel sensing in the K2 subbands to determine whether a channel is idle;

wherein the channel awareness is used to determine that the K4 of the K2 subbands are idle.

According to an aspect of the present application, the method is characterized in that K4 is greater than 1, the start time of the second time unit is later than the end time of the first time unit, and a given second sub-radio signal exists in the K4 second sub-radio signals, and the given second sub-radio signal and the second target sub-radio signal adopt different redundancy versions.

receiving first information;

processing the first signaling;

wherein the first signaling is used to determine the K3 subbands; the process is either transmitting or receiving.

processing the second signaling;

wherein the second signaling is used to determine the K4 subbands; the process is either transmitting or receiving.

Processing the third signaling;

the third signaling comprises HARQ process numbers corresponding to the K1 first sub-wireless signals; the process is either transmitting or receiving.

processing the fourth signaling;

the fourth signaling comprises the HARQ process numbers corresponding to the K2 second sub-wireless signals; the process is either transmitting or receiving.

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

a first transceiver for receiving K3 first sub-wireless signals in K3 sub-bands among K1 sub-bands in a first time unit, respectively;

a second transceiver for receiving K4 second sub-wireless signals in K4 sub-bands among K2 sub-bands in a second time unit, respectively;

The application discloses a second node for wireless communication, comprising:

a third transceiver for transmitting K3 first sub-radio signals in K3 sub-bands among K1 sub-bands in the first time unit, respectively;

a fourth transceiver for transmitting K4 second sub-radio signals in K4 sub-bands among the K2 sub-bands in the second time unit, respectively;

As an example, compared to the conventional solution, the present application has the following advantages:

when the first time unit and the second time unit are respectively aimed at transmission and retransmission of one TB, the CBG (i.e. the target bit sub-block) corresponding to the wireless signal which is not passed by the LBT is not mapped to the sub-band (i.e. the first sub-band) which is not passed by the primary transmission during retransmission, so that the CBG which is not passed by the LBT is ensured to be retransmitted on the sub-band which is the most stable and has the least interference, and the overall transmission performance is improved.

When the first time unit and the second time unit are respectively repeated for two times of one TB, CBGs reserved on the sub-frequency bands which are not passed by the LBT are mapped on the sub-frequency bands which are passed by the LBT, and the mapping of the CBGs accords with a certain rule so as to ensure the transmission performance.

Drawings

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

FIG. 1 illustrates a process flow diagram of a first node according to one embodiment of the present application;

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

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

FIG. 4 shows a schematic diagram of a first communication device and a second communication device according to one embodiment of the present application;

FIG. 5 shows a flowchart of K1 first sub-wireless signals according to one embodiment of the present application;

fig. 6 shows a flow chart of K1 first sub-radio signals according to another embodiment of the present application;

FIG. 7 illustrates a flow chart for performing channel sensing to determine whether a channel is idle in accordance with one embodiment of the present application;

FIG. 8 illustrates a flow chart of energy detection in a target time sub-pool according to one embodiment of the present application;

fig. 9 illustrates a flow chart of determining whether to transmit a given sub-radio signal based on whether a channel is idle in accordance with one embodiment of the present application;

FIG. 10 shows a schematic diagram of a time sub-pool according to the present application;

FIG. 11 shows a schematic diagram of a relationship of a first sub-band and a second sub-band according to the present application;

FIG. 12 shows a schematic diagram of a relationship of another first sub-band and a second sub-band according to the present application;

FIG. 13 illustrates a block diagram of a structure for use in a first node according to one embodiment of the present application;

fig. 14 shows a block diagram of a structure used in a second node according to one embodiment of the present application.

Detailed Description

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

Example 1

Embodiment 1 illustrates a process flow diagram of a first node, as shown in fig. 1. In 100 shown in fig. 1, each block represents a step. In embodiment 1, the first node in the present application receives K3 first sub-radio signals in K3 sub-bands of K1 sub-bands in the first time unit in step 101, and receives K4 second sub-radio signals in K4 sub-bands of K2 sub-bands in the second time unit in step 102, respectively.

In embodiment 1, the K1 sub-bands are reserved for the K1 first sub-radio signals, respectively, and the K1 first sub-radio signals include any one of the K4 first sub-radio signals; the K2 sub-frequency bands are reserved for the K2 second sub-wireless signals respectively, and the K2 second sub-wireless signals comprise any one of the K4 second sub-wireless signals; a first sub-band being one of the K1 sub-bands and being other than the K3 sub-bands, the first sub-band being occupied in the first time unit, the first sub-band being reserved for a first target sub-radio signal of the K1 first sub-radio signals; a second sub-band is one of the K4 sub-bands, the second sub-band being idle in the second time unit, the second sub-band being used for transmitting a second target sub-radio signal of the K2 second sub-radio signals; the first target sub-radio signal and the second target sub-radio signal are both used to carry target bit sub-blocks; the first sub-band is used to determine the second sub-band; the K1 sub-bands are all deployed in unlicensed spectrum, and the K2 sub-bands are all deployed in unlicensed spectrum; the K1 and the K2 are positive integers greater than 1; the K3 is a positive integer less than the K1, and the K4 is a positive integer not greater than the K2.

As an embodiment, the meaning that the first subband is used to determine the second subband in the sentence includes: the K2 subbands include the first subband, and the second subband is a subband other than the first subband of the K2 subbands.

As an embodiment, the meaning that the first subband is used to determine the second subband in the sentence includes: the target bit sub-block carried on the first sub-band is preferentially mapped to sub-bands outside the first sub-band in the second time unit.

As an embodiment, the meaning that the first subband is used to determine the second subband in the sentence includes: in the second time unit, K4 subbands included in the K2 subbands are idle, at least one subband other than the first subband is included in the K4 subbands, and the second subband is a subband other than the first subband and among the K4 subbands.

As a sub-embodiment of this embodiment, the K4 sub-bands respectively correspond to K4 identifiers, the K4 identifiers are all non-negative integers, and the second sub-band is a sub-band corresponding to a minimum identifier among the K4 sub-bands.

As a sub-embodiment of this embodiment, the second sub-band is a sub-band having the smallest center frequency point among the K4 sub-bands.

As a sub-embodiment of this embodiment, the second sub-band is a sub-band having the largest center frequency point among the K4 sub-bands.

As an embodiment, the meaning that the first subband is used to determine the second subband in the sentence includes: there is no subcarrier belonging to both the first and the second frequency sub-band.

As an embodiment, the meaning that the first subband is used to determine the second subband in the sentence includes: the center frequency point of the first sub-band is different from the center frequency point of the second sub-band.

As an embodiment, the meaning that the first subband is used to determine the second subband in the sentence includes: the second sub-band is one of the K2 sub-bands having a center frequency point furthest from the first sub-band.

As one embodiment, the absence of physical layer dynamic signaling indicates that the target bit sub-block is transmitted on the second sub-band in the second time unit.

As an embodiment, the first node determines that the first sub-band is occupied by the first signaling in the present application, and determines that K4 sub-bands of the K2 sub-bands are unoccupied according to the second signaling in the present application, and further determines which sub-band of the K4 sub-bands is used to carry the target bit sub-block according to a predefined criterion.

As a sub-embodiment of this embodiment, the predefined criteria is not required to be indicated by explicit signaling.

As an embodiment, the first time unit is a Slot (Slot), or the first time unit is a Subframe (Subframe), or the first time unit is a micro-Slot (Mini-Slot).

As an embodiment, the second time unit is a time slot, or the second time unit is a subframe, or the second time unit is a micro time slot.

As an embodiment, the first time unit and the second time unit are discrete in the time domain.

As an embodiment, the first time unit and the second time unit are consecutive in the time domain.

As an embodiment, any one of the K1 subbands is a BWP (Bandwidth Part).

As an embodiment, any one of the K1 subbands is a Carrier (Carrier).

As an embodiment, the bandwidth of any of the K1 subbands is not greater than 20MHz.

As an embodiment, any of the K1 subbands comprises a bandwidth occupied by a positive integer number of PRBs (Physical Resource Block, physical resource blocks).

As an embodiment, only K3 sub-bands of the K1 sub-bands are idle, and only K3 first sub-radio signals corresponding to the K3 sub-bands of the K1 first sub-radio signals are transmitted in the first time unit by a node generating the target bit sub-block.

As a sub-embodiment of this embodiment, the K1-bit sub-blocks generate the K1 first sub-radio signals, respectively, K3-bit sub-blocks among the K1-bit sub-blocks generate the K3 first sub-radio signals, respectively, bit sub-blocks among the K1-bit sub-blocks and other than the K3-bit sub-blocks are discarded from transmission in the first time unit, and at least one of bit sub-blocks among the K1-bit sub-blocks and other than the K3-bit sub-blocks is transmitted in the second time unit.

As a sub-embodiment of this embodiment, the mapping manner of the bit sub-blocks out of the K1 bit sub-blocks and the K3 bit sub-blocks in the K4 sub-bands is fixed, or the mapping manner of the bit sub-blocks out of the K1 bit sub-blocks and the K3 bit sub-blocks in the K4 sub-bands is predefined.

As an embodiment, the K1 is equal to the K2, and the K1 subbands are the same as the K2 subbands, respectively.

As an embodiment, K1 bit sub-blocks are mapped sequentially into the K1 sub-bands in a first time unit.

As an embodiment, the bit blocks of the K1 bit sub-blocks that are not transmitted are mapped sequentially into K4 sub-bands of the K2 sub-bands in the second time unit.

As an embodiment, the meaning that the first sub-band is occupied in the first time unit includes: the first target sub-wireless signal is not transmitted on the first sub-band.

As an embodiment, the meaning that the first sub-band is occupied in the first time unit includes: the first sub-band is occupied by nodes other than the second node in the present application in the first time unit.

As an embodiment, the meaning that the second sub-band is idle in the second time unit includes: the second target sub-wireless signal is transmitted on the second sub-frequency band.

As an embodiment, the meaning that the second sub-band is idle in the second time unit includes: the second sub-band is not occupied by nodes other than the second node in the present application in the second time unit.

As an embodiment, the physical layer channel occupied by any one of the K1 first sub-radio signals includes PDSCH (Physical Downlink Shared Channel ).

As an embodiment, the physical layer channel occupied by any one of the K2 second sub-radio signals includes PDSCH.

As an embodiment, the physical layer channel occupied by any one of the K1 first sub-radio signals includes PUSCH (Physical Uplink Shared Channel ).

As an embodiment, the physical layer channel occupied by any one of the K2 second sub-radio signals includes PUSCH.

As an embodiment, the K1 bit sub-blocks in the present application are used to generate the K1 first sub-radio signals, respectively, and the K1 bit sub-blocks are K1 CBGs, respectively.

As a sub-embodiment of this embodiment, the K1 CBGs belong to the same TB.

As an embodiment, the K2 bit sub-blocks in the present application are used to generate the K2 second sub-radio signals, respectively, and the K2 bit sub-blocks are K2 CBGs, respectively.

As a sub-embodiment of this embodiment, the K2 CBGs belong to the same TB.

As an embodiment, the first time unit and the second time unit belong to the same COT (Channel Occupancy Time ).

As an embodiment, the first time unit and the second time unit belong to the same MCOT (Maximum COT, maximum channel occupation time).

As an embodiment, the K1 first sub-radio signals together form one PDSCH, or the K1 first sub-radio signals together form one PUSCH.

As an embodiment, one TB is used to generate the K1 first sub-radio signals.

As an embodiment, the K2 second sub-radio signals together form one PDSCH, or the K2 second sub-radio signals together form one PUSCH.

As an embodiment, one TB is used to generate the K2 second sub-radio signals.

As an embodiment, the K1 first sub-radio signals and the K2 second sub-radio signals belong together to one PDSCH.

As an embodiment, the K1 first sub-radio signals and the K2 second sub-radio signals belong together to one PUSCH.

As an embodiment, one TB is used to generate the K1 first sub-radio signals and the K2 second sub-radio signals.

As an embodiment, the first frequency band includes the K1 subbands, and the first frequency band is disposed in an unlicensed spectrum.

As an embodiment, the second frequency band includes the K2 subbands, and the second frequency band is disposed in an unlicensed spectrum.

As a sub-embodiment of the above two embodiments, the first frequency band and the second frequency band occupy the same frequency domain resource.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture, as shown in fig. 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 an NR 5g, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced, enhanced Long-Term Evolution) system network architecture 200. The NR 5G or LTE network architecture 200 may be referred to as EPS (Evolved Packet System ) 200.EPS 200 may include one or more UEs (User Equipment) 201, ng-RAN (next generation radio access Network) 202, epc (Evolved Packet Core )/5G-CN (5G Core Network) 210, hss (Home Subscriber Server ) 220, and internet service 230. The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, EPS 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 or other cellular networks. The NG-RAN includes NR 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 Xn 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), TRP (transmit-receive point), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the EPC/5G-CN210. Examples of UE201 include a cellular telephone, 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, an drone, an aircraft, a narrowband physical network device, a machine-type communication device, a land vehicle, an automobile, a wearable device, or any other similar functional device. Those of skill in the art may also refer to the 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 EPC/5G-CN210 through an S1/NG interface. EPC/5G-CN210 includes MME/AMF/UPF211, other MME/AMF/UPF214, S-GW (Service Gateway) 212, and P-GW (Packet Date Network Gateway, packet data network Gateway) 213. The MME/AMF/UPF211 is a control node that handles signaling between the UE201 and the EPC/5G-CN210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet Protocal, internet protocol) packets are transported through the S-GW212, which S-GW212 itself is connected to P-GW213. The P-GW213 provides UE IP address assignment as well as other functions. The P-GW213 is connected to the internet service 230. The internet service 230 includes operator-corresponding internet protocol services, which may include, in particular, the internet, intranets, IMS (IP Multimedia Subsystem ) and PS streaming services (PSs).

As an embodiment, the UE201 corresponds to the first node in the present application, and the gNB corresponds to the second node in the present application.

As an embodiment, the UE201 corresponds to the second node in the present application, and the gNB corresponds to the first node in the present application.

As an embodiment, the gNB203 supports transmissions on unlicensed spectrum.

As an embodiment, the UE201 supports transmission over 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. Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane and a control plane, fig. 3 shows the radio protocol architecture for a first node and a second node with three layers: layer 1, layer 2 and layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY301. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the first node and the second node through PHY301. In the user plane, the L2 layer 305 includes a MAC (Medium Access Control ) sublayer 302, an RLC (Radio Link Control, radio link layer control protocol) sublayer 303, and a PDCP (Packet Data Convergence Protocol ) sublayer 304, which are terminated at a second node on the network side. Although not shown, the first node may have several upper layers above the L2 layer 305, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., remote 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 data packets to reduce radio transmission overhead, security by ciphering the data packets, and handover support for UEs between second nodes. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception 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 the various radio resources (e.g., resource blocks) in one cell among the first nodes. The MAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the first node and the second node is substantially the same for the physical layer 301 and the L2 layer 305, but there is no header compression function for the control plane. The control plane also includes an RRC (Radio Resource Control ) sublayer 306 in layer 3 (L3 layer). The RRC sublayer 306 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second node and the first node.

As an embodiment, the radio protocol architecture in fig. 3 is applicable to the first node in the present application.

As an embodiment, the radio protocol architecture in fig. 3 is applicable to the second node in the present application.

As an embodiment, any one of the K1 first sub-radio signals in the present application is generated in the PHY301.

As an embodiment, any one of the K1 first sub-radio signals in the present application is generated in the MAC sublayer 302.

As an embodiment, any one of the K2 second sub-radio signals in the present application is generated in the PHY301.

As an embodiment, any one of the K2 second sub-radio signals in the present application is generated in the MAC sublayer 302.

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

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

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

As an embodiment, the second signaling in the present application is generated in the PHY301.

As an embodiment, the third signaling in the present application is generated in the PHY301.

As an embodiment, the fourth signaling in the present application is generated in the PHY301.

Example 4

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

The first communication device 450 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.

The second communication device 410 includes a controller/processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multi-antenna receive processor 472, a multi-antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.

In the transmission from the second communication device 410 to the first communication device 450, upper layer data packets from the core network are provided to a controller/processor 475 at the second communication device 410. The controller/processor 475 implements the functionality of the L2 layer. In the transmission from the second communication device 410 to the first communication device 450, a controller/processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller/processor 475 is also responsible for retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., physical layer). Transmit processor 416 performs coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 410, as well as mapping of signal clusters 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 digitally space-precodes the coded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, to generate one or more spatial streams. A transmit processor 416 then maps each spatial stream to a subcarrier, 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 a physical channel carrying the time domain multicarrier symbol stream. 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 multiple antenna transmit processor 471 to a radio frequency stream and then provides it to a different antenna 420.

In a transmission from the second communication device 410 to the first communication device 450, each receiver 454 receives a signal at the first communication device 450 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 multicarrier symbol stream that is provided to a receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various signal processing functions for 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. The receive processor 456 converts the baseband multicarrier symbol stream after receiving the 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 signal and the reference signal are demultiplexed by the receive processor 456, wherein the reference signal is to be used for channel estimation, and the data signal is subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial stream destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in a receive processor 456 and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals that were transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller/processor 459. The controller/processor 459 implements the functions of the L2 layer. The controller/processor 459 may be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In the transmission from the second communication device 410 to the second communication device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the core network. The upper layer packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

In the transmission from the first communication device 450 to the second communication device 410, a data source 467 is used at the first communication device 450 to provide upper layer data packets to a controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the transmit functions at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocations, implementing L2 layer functions for the user and control planes. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming, with the multi-antenna transmit processor 457 performing digital multi-antenna spatial precoding, after which the transmit processor 468 modulates the resulting spatial stream into a multi-carrier/single-carrier symbol stream, which is analog precoded/beamformed in the multi-antenna transmit processor 457 before being provided to the different antennas 452 via the transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and provides it to an antenna 452.

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

As an embodiment, the first communication device 450 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 to, with the at least one processor, cause the apparatus of the first communication device 450 to at least: receiving K3 first sub-wireless signals in K3 sub-bands among K1 sub-bands in the first time unit, respectively, and receiving K4 second sub-wireless signals in K4 sub-bands among K2 sub-bands in the second time unit, respectively; the K1 sub-frequency bands are reserved for the K1 first sub-wireless signals respectively, and the K1 first sub-wireless signals comprise any first sub-wireless signal in the K4 first sub-wireless signals; the K2 sub-frequency bands are reserved for the K2 second sub-wireless signals respectively, and the K2 second sub-wireless signals comprise any one of the K4 second sub-wireless signals; a first sub-band being one of the K1 sub-bands and being other than the K3 sub-bands, the first sub-band being occupied in the first time unit, the first sub-band being reserved for a first target sub-radio signal of the K1 first sub-radio signals; a second sub-band is one of the K4 sub-bands, the second sub-band being idle in the second time unit, the second sub-band being used for transmitting a second target sub-radio signal of the K2 second sub-radio signals; the first target sub-radio signal and the second target sub-radio signal are both used to carry target bit sub-blocks; the first sub-band is used to determine the second sub-band; the K1 sub-bands are all deployed in unlicensed spectrum, and the K2 sub-bands are all deployed in unlicensed spectrum; the K1 and the K2 are positive integers greater than 1; the K3 is a positive integer less than the K1, and the K4 is a positive integer not greater than the K2.

As an embodiment, the first communication device 450 includes: a memory storing a program of computer-readable instructions that, when executed by at least one processor, produce acts comprising: receiving K3 first sub-wireless signals in K3 sub-bands among K1 sub-bands in the first time unit, respectively, and receiving K4 second sub-wireless signals in K4 sub-bands among K2 sub-bands in the second time unit, respectively; the K1 sub-frequency bands are reserved for the K1 first sub-wireless signals respectively, and the K1 first sub-wireless signals comprise any first sub-wireless signal in the K4 first sub-wireless signals; the K2 sub-frequency bands are reserved for the K2 second sub-wireless signals respectively, and the K2 second sub-wireless signals comprise any one of the K4 second sub-wireless signals; a first sub-band being one of the K1 sub-bands and being other than the K3 sub-bands, the first sub-band being occupied in the first time unit, the first sub-band being reserved for a first target sub-radio signal of the K1 first sub-radio signals; a second sub-band is one of the K4 sub-bands, the second sub-band being idle in the second time unit, the second sub-band being used for transmitting a second target sub-radio signal of the K2 second sub-radio signals; the first target sub-radio signal and the second target sub-radio signal are both used to carry target bit sub-blocks; the first sub-band is used to determine the second sub-band; the K1 sub-bands are all deployed in unlicensed spectrum, and the K2 sub-bands are all deployed in unlicensed spectrum; the K1 and the K2 are positive integers greater than 1; the K3 is a positive integer less than the K1, and the K4 is a positive integer not greater than the K2.

As an embodiment, the second communication device 410 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 second communication device 410 means at least: transmitting K3 first sub-wireless signals in K3 sub-bands among K1 sub-bands in the first time unit, respectively, and transmitting K4 second sub-wireless signals in K4 sub-bands among K2 sub-bands in the second time unit, respectively; the K1 sub-frequency bands are reserved for the K1 first sub-wireless signals respectively, and the K1 first sub-wireless signals comprise any first sub-wireless signal in the K4 first sub-wireless signals; the K2 sub-frequency bands are reserved for the K2 second sub-wireless signals respectively, and the K2 second sub-wireless signals comprise any one of the K4 second sub-wireless signals; a first sub-band being one of the K1 sub-bands and being other than the K3 sub-bands, the first sub-band being occupied in the first time unit, the first sub-band being reserved for a first target sub-radio signal of the K1 first sub-radio signals; a second sub-band is one of the K4 sub-bands, the second sub-band being idle in the second time unit, the second sub-band being used for transmitting a second target sub-radio signal of the K2 second sub-radio signals; the first target sub-radio signal and the second target sub-radio signal are both used to carry target bit sub-blocks; the first sub-band is used to determine the second sub-band; the K1 sub-bands are all deployed in unlicensed spectrum, and the K2 sub-bands are all deployed in unlicensed spectrum; the K1 and the K2 are positive integers greater than 1; the K3 is a positive integer less than the K1, and the K4 is a positive integer not greater than the K2.

As an embodiment, the second communication device 410 apparatus includes: a memory storing a program of computer-readable instructions that, when executed by at least one processor, produce acts comprising: transmitting K3 first sub-wireless signals in K3 sub-bands among K1 sub-bands in the first time unit, respectively, and transmitting K4 second sub-wireless signals in K4 sub-bands among K2 sub-bands in the second time unit, respectively; the K1 sub-frequency bands are reserved for the K1 first sub-wireless signals respectively, and the K1 first sub-wireless signals comprise any first sub-wireless signal in the K4 first sub-wireless signals; the K2 sub-frequency bands are reserved for the K2 second sub-wireless signals respectively, and the K2 second sub-wireless signals comprise any one of the K4 second sub-wireless signals; a first sub-band being one of the K1 sub-bands and being other than the K3 sub-bands, the first sub-band being occupied in the first time unit, the first sub-band being reserved for a first target sub-radio signal of the K1 first sub-radio signals; a second sub-band is one of the K4 sub-bands, the second sub-band being idle in the second time unit, the second sub-band being used for transmitting a second target sub-radio signal of the K2 second sub-radio signals; the first target sub-radio signal and the second target sub-radio signal are both used to carry target bit sub-blocks; the first sub-band is used to determine the second sub-band; the K1 sub-bands are all deployed in unlicensed spectrum, and the K2 sub-bands are all deployed in unlicensed spectrum; the K1 and the K2 are positive integers greater than 1; the K3 is a positive integer less than the K1, and the K4 is a positive integer not greater than the K2.

As an embodiment, the first communication device 450 corresponds to a first node in the present application.

As an embodiment, the second communication device 410 corresponds to a second node in the present application.

As an embodiment, the first communication device 450 is a UE.

As an embodiment, the first communication device 450 is a base station.

As an embodiment, the second communication device 410 is a UE.

As an embodiment, the second communication device 410 is a base station.

As an embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least one of the controller/processor 459 being adapted to receive K3 first sub-radio signals in K3 sub-bands of K1 sub-bands in a first time unit, respectively; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least one of the controller/processor 475 is used to transmit K3 first sub-radio signals in K3 sub-bands of K1 sub-bands in a first time unit, respectively.

As an embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least one of the controller/processor 459 being adapted to receive K4 second sub-radio signals in K4 sub-bands of the K2 sub-bands in a second time unit, respectively; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least one of the controller/processor 475 is configured to transmit K4 second sub-wireless signals in K4 sub-bands of the K2 sub-bands in the second time unit, respectively.

As one embodiment, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller/processor 459 is used to transmit first information; the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, at least one of the controller/processors 475 is used to receive first information.

As an embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least one of the controller/processor 459 being adapted to receive first signaling; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least one of the controller/processor 475 are used to transmit first signaling.

As an embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least one of the controller/processor 459 being adapted to receive second signaling; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least one of the controller/processor 475 is used to transmit second signaling.

As an embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least one of the controller/processor 459 being adapted to receive third signaling; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least one of the controller/processor 475 is used to transmit third signaling.

As an embodiment, the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, at least one of the controller/processor 459 being adapted to receive fourth signaling; the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, at least one of the controller/processor 475 is used to transmit fourth signaling.

As one embodiment, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller/processor 459 is used to transmit first signaling; the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, at least one of the controller/processors 475 is used to receive first signaling.

As one embodiment, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller/processor 459 is used to transmit third signaling; the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, at least one of the controller/processors 475 is used to receive third signaling.

As one embodiment, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller/processor 459 is used to transmit fourth signaling; the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, at least one of the controller/processors 475 is used to receive fourth signaling.

As an example, the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, at least one of the controller/processor 475 is configured to perform channel sensing in the K1 subbands to determine if a channel is idle.

As an example, the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, at least one of the controller/processor 475 is configured to perform channel sensing in the K2 subbands to determine if a channel is idle.

Example 5

Embodiment 5 illustrates a flowchart of K1 first sub-radio signals, as shown in fig. 5. In fig. 5, a flow chart of communication between a first node U1 and a second node N2 is shown. The steps in block F0 shown in the figure are optional; both the embodiment and the sub-embodiment in embodiment 5 can be applied to embodiment 6 without conflict.

For the followingFirst node U1The third signaling is received in step S10, the first signaling is received in step S11, K3 first sub-radio signals are received in K3 sub-bands among K1 sub-bands in the first time unit in step S12, the first information is transmitted in step S13, the fourth signaling is received in step S14, the second signaling is received in step S15, and K4 second sub-radio signals are received in K4 sub-bands among K2 sub-bands in the second time unit in step S16, respectively.

For the followingSecond node N2In step S20, third signaling is transmitted, in step S21, channel sensing is performed in K1 subbands to determine whether a channel is idle, in step S22, first signaling is transmitted, in step S23, K3 first sub-radio signals are respectively transmitted in K3 subbands in K1 subbands in a first time unit, in step S24, first information is received, in step S25, fourth signaling is transmitted, in step S26, channel sensing is performed in K2 subbands to determine whether a channel is idle, in step S27, second signaling is transmitted, in step S28, K4 second sub-radio signals are respectively transmitted in K4 subbands in K2 subbands in a second time unit.

In embodiment 5, the K1 subbands are reserved for the K1 first sub-radio signals, respectively, and the K2 subbands are reserved for the K2 second sub-radio signals, respectively; a first sub-band being one of the K1 sub-bands, the first sub-band being occupied in the first time unit; the first sub-band is reserved for first target sub-wireless signals, and the K1 first sub-wireless signals comprise the first target sub-wireless signals; a second sub-band is one of the K2 sub-bands, the second sub-band being idle in the second time unit, the second sub-band being used for transmitting a second target sub-radio signal, the K2 second sub-radio signals comprising the second target sub-radio signal; the first target sub-radio signal and the second target sub-radio signal are both used to carry target bit sub-blocks; the first sub-band is used to determine the second sub-band; the K1 sub-bands are all deployed in unlicensed spectrum, and the K2 sub-bands are all deployed in unlicensed spectrum; the K1 and the K2 are positive integers greater than 1; the first information is used to determine that the first target sub-wireless signal was not received correctly; the starting time of the second time unit is later than the sending time of the first information; the first signaling is used to determine the K3 subbands; the second signaling is used to determine the K4 subbands; the third signaling comprises HARQ process numbers corresponding to the K1 first sub-wireless signals; the fourth signaling includes HARQ process numbers corresponding to the K2 second sub-radio signals.

As one embodiment, K3 sub-bands of the K1 sub-bands are all idle in the first time unit, the first sub-band being a sub-band of the K1 sub-bands and outside the K3 sub-bands; k4 of the K2 subbands are each free in the second time unit, the second subband being one of the K4 subbands; the K3 is a positive integer less than K1, and the K4 is a positive integer not greater than K2.

As an embodiment, the second node N2 determines that K3 sub-bands of the K1 sub-bands are idle before the first time unit.

As an embodiment, the second node N2 determines that K4 subbands of the K2 subbands are idle before the second time unit.

As an embodiment, the K4 is greater than 1, the start time of the second time unit is later than the end time of the first time unit, the K4 sub-bands are respectively used for transmitting K4 second sub-radio signals in the K2 second sub-radio signals, a given second sub-radio signal exists in the K4 second sub-radio signals, and the given second sub-radio signal and the second target sub-radio signal adopt different redundancy versions.

As an embodiment, the K1 is equal to the K2, the K1 sub-bands are the K2 sub-bands, and the K3 sub-bands are the K4 sub-bands, respectively.

As an embodiment, the transmission in the second time unit and the transmission in the first time unit are two repeated transmissions for one transport block.

As an embodiment, K1 bit sub-blocks are mapped into the K1 sub-bands in sequence in the first time unit, and (K1-K3) bit sub-blocks, which are not transmitted in the first time unit, of the K1 bit sub-blocks are mapped into the K4 sub-bands of the K2 sub-bands in sequence in the second time unit.

As an embodiment, the first bit block includes the K1 bit sub-blocks in the present application, the K1 bit sub-blocks are used to generate the K1 first sub-radio signals, respectively, and the first information is HARQ for the first bit block.

As an embodiment, the first information includes K1 bits, and the K1 bits correspond to the K1-bit sub-blocks, respectively.

As an embodiment, the first information is HARQ-ACK for the first bit block.

As an embodiment, the physical layer channel carrying the first information is PUCCH (Physical Uplink Control Channel ).

As an embodiment, the physical layer channel carrying the first information is PUSCH.

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

As an embodiment, the first signaling is cell-common.

As an embodiment, the CRC (Cyclic Redundancy Check ) included in the first signaling is scrambled by a given RNTI (Radio Network Temporary Identifier, radio network temporary identity); the given RNTI is cell-common or the given RNTI is terminal group-specific and the first node U1 belongs to the terminal group.

As a sub-embodiment of this embodiment, the given RNTI is a CC-RNTI (Common Control RNTI, common control radio network temporary identity).

As a sub-embodiment of this embodiment, the given RNTI is a GC-RNTI (Group Common RNTI, group public radio network temporary identity).

As an embodiment, the time domain resource occupied by the first signaling is contiguous with the first time unit.

As an embodiment, the second signaling is a DCI.

As an embodiment, the second signaling is cell-common.

As an embodiment, the CRC included in the second signaling is scrambled by a given RNTI; the given RNTI is cell-common or the given RNTI is terminal group-specific and the first node belongs to the terminal group.

As a sub-embodiment of this embodiment, the given RNTI is a CC-RNTI.

As a sub-embodiment of this embodiment, the given RNTI is a GC-RNTI.

As an embodiment, the time domain resource occupied by the second signaling is contiguous with the first time unit.

As an embodiment, the first bit block includes K1 bit sub-blocks, the target bit sub-block is one of the K1 bit sub-blocks, the K1 first sub-radio signals are respectively used to carry the K1 bit sub-blocks, and the first bit block corresponds to one HARQ process number.

As an embodiment, the K1 first sub-radio signals and the K2 second sub-radio signals share one HARQ process number.

As an embodiment, the K1 first sub-radio signals and the K2 second sub-radio signals correspond to two different HARQ process numbers, respectively, and a relationship between the two different HARQ process numbers is fixed or a relationship between the two different HARQ process numbers is configurable.

As a sub-embodiment of this embodiment, the difference between the two different HARQ process numbers is fixed.

As a sub-embodiment of this embodiment, the difference between the two different HARQ process numbers is configured by higher layer signaling.

As an embodiment, the third signaling is a DCI.

As an embodiment, the third signaling is specific to the first node U1.

As an embodiment, the time domain resource occupied by the third signaling is discrete from the first time unit.

As an embodiment, the K1 first sub-radio signals correspond to one HARQ process number.

As an embodiment, the given first sub-radio signal is one of the K1 first sub-radio signals, the given sub-band is one of the K1 sub-bands reserved for transmitting the given first sub-radio signal, and the third signaling is used to determine frequency domain resources occupied by the given first sub-radio signal in the given sub-band.

As an embodiment, the K1 first sub-radio signals occupy the same time domain resource in the first time unit, and the third signaling is used to determine the time domain resource occupied by the K1 first sub-radio signals.

As an embodiment, the K1 first sub-radio signals use the same MCS (Modulation & Code Scheme), and the third signaling is used to determine the MCS used by the K1 first sub-radio signals.

As one embodiment, the third signaling is used to schedule the K1 first sub-radio signals on the K1 sub-bands.

As an embodiment, the third signaling is a downlink Grant (DL Grant).

As an embodiment, the fourth signaling is a DCI.

As an embodiment, the fourth signaling is specific to the first node.

As an embodiment, the time domain resource occupied by the fourth signaling is discrete from the second time unit.

As an embodiment, the K2 second sub-radio signals correspond to one HARQ process number.

As an embodiment, the given second sub-radio signal is one of the K2 second sub-radio signals, the given sub-band is one of the K2 sub-bands reserved for transmitting the given second sub-radio signal, and the fourth signaling is used to determine frequency domain resources occupied by the given second sub-radio signal in the given sub-band.

As an embodiment, the K2 second sub-radio signals occupy the same time domain resource in the second time unit, and the fourth signaling is used to determine the time domain resource occupied by the K2 second sub-radio signals.

As an embodiment, the K2 second sub-radio signals employ the same MCS, and the fourth signaling is used to determine the MCS employed by the K2 second sub-radio signals.

As one embodiment, the fourth signaling is used to schedule the K2 second sub-radio signals on the K2 sub-bands.

As an embodiment, the fourth signaling is a downlink grant.

As an embodiment, the first node U1 is a terminal and the second node N2 is a base station.

As an embodiment, the first node U1 is a base station and the second node N2 is a terminal.

As an embodiment, the first signaling is an AUL-UCI (Autonomous Uplink-Uplink Control Information, automatic uplink-uplink transmission uplink control information).

As an embodiment, the second signaling is an AUL-UCI.

As an embodiment, the third signaling is an AUL-UCI.

As an embodiment, the fourth signaling is an AUL-UCI.

Example 6

Embodiment 6 illustrates another flowchart of K1 first sub-radio signals, as shown in fig. 6. In fig. 6, a flow chart of communication between a first node N3 and a second node U4 is shown. The steps in block F1 shown in the figure are optional; the steps in block F1 shown in the figure are optional.

For the followingFirst node N3The third signaling is transmitted in step S30, the first signaling is received in step S31, K3 first sub-radio signals are received in each of K3 sub-bands among K1 sub-bands in the first time unit in step S32, the fourth signaling is transmitted in step S34, the second signaling is received in step S35, and K4 second sub-radio signals are received in each of K4 sub-bands among K2 sub-bands in the second time unit in step S36.

For the followingSecond node U4Receiving the third signaling in step S40, performing channel sensing in K1 subbands to determine whether a channel is idle in step S41, transmitting the first signaling in step S42, transmitting K3 first sub-radio signals in K3 subbands among the K1 subbands in the first time unit, respectively, in step S43, and The fourth signaling is received in step S44, channel sensing is performed in K2 subbands to determine whether a channel is idle in step S45, the second signaling is transmitted in step S46, and K4 second sub-radio signals are respectively transmitted in K4 subbands among the K2 subbands in the second time unit in step S47.

In embodiment 6, the K1 subbands are reserved for the K1 first sub-radio signals, respectively, and the K2 subbands are reserved for the K2 second sub-radio signals, respectively; a first sub-band being one of the K1 sub-bands, the first sub-band being occupied in the first time unit; the first sub-band is reserved for first target sub-wireless signals, and the K1 first sub-wireless signals comprise the first target sub-wireless signals; a second sub-band is one of the K2 sub-bands, the second sub-band being idle in the second time unit, the second sub-band being used for transmitting a second target sub-radio signal, the K2 second sub-radio signals comprising the second target sub-radio signal; the first target sub-radio signal and the second target sub-radio signal are both used to carry target bit sub-blocks; the first sub-band is used to determine the second sub-band; the K1 sub-bands are all deployed in unlicensed spectrum, and the K2 sub-bands are all deployed in unlicensed spectrum; the K1 and the K2 are positive integers greater than 1; the fourth signaling includes first information used to determine that the first target sub-wireless signal was not received correctly; the starting time of the second time unit is later than the sending time of the first information; the first signaling is used to determine the K3 subbands; the second signaling is used to determine the K4 subbands; the third signaling comprises HARQ process numbers corresponding to the K1 first sub-wireless signals; the fourth signaling includes HARQ process numbers corresponding to the K2 second sub-radio signals.

As an embodiment, the first node U3 is a base station and the second node U4 is a user equipment.

As an embodiment, the third signaling is an uplink Grant (UL Grant).

As an embodiment, the fourth signaling is an uplink grant.

As an embodiment, the physical layer channel carrying the first information is PDCCH (Physical Downlink Control Channel ).

As an embodiment, the first information is an NDI (New Data Indicator, new data indication), and the HARQ process corresponding to the NDI is the same as the HARQ process corresponding to the first bit block.

Example 7

Embodiment 7 illustrates a flowchart for performing channel sensing to determine whether a channel is idle, as shown in fig. 7. The steps shown in fig. 7 are channel sensing performed for the target frequency domain resources to determine whether channels on the target frequency domain resources are free.

The first node in the present application generates a first integer in step S71; initializing a first counter to Q2 in step S72, the Q2 distribution probability being uniform among all integers between 0 and the first integer; in step S73, 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 yes, in step S74, it is determined whether the first counter is 0; if the determination in step S74 is yes, it is determined in step S76 that the channel is idle; if the determination in step S74 is no, the first counter is updated to be decremented by 1 (i.e., the value of the updated first counter=the value of the first counter before update-1) in step S75, and energy detection is performed in one time sub-pool to determine whether the one time sub-pool is free; if the judgment result in the step S75 is yes, jumping to the step S74; if the result of the determination in step S75 is no, the process jumps to step S73, i.e. the energy detection is performed until one extended time sub-pool is considered to be free.

As an embodiment, the target frequency domain resource is any one of the K1 subbands in the present application.

As a sub-embodiment of this embodiment, channel sensing on the K1 sub-bands is performed independently.

As a sub-embodiment of this embodiment, channel sensing on the K1 sub-bands is performed together.

As an embodiment, the target frequency domain resource is any one of the K2 subbands in the present application.

As a sub-embodiment of this embodiment, channel sensing on the K2 sub-bands is performed independently.

As a sub-embodiment of this embodiment, channel sensing on the K2 sub-bands is performed together.

As an embodiment, the target frequency domain resource is the first frequency band in the present application.

As an embodiment, the target frequency domain resource is the second frequency band in the present application.

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

As one embodiment, the first node performs Q1 times of energy detection in the Q1 time sub-pools, respectively, the Q1 times of energy detection being used to determine whether the target frequency domain resource is Idle (Idle).

As an embodiment, the first node performs Q1 times of energy detection in the Q1 time sub-pools, respectively, the Q1 times of energy detection being used to determine whether the target frequency domain resource can be used by the first node for transmitting wireless signals.

As an embodiment, the first node performs Q1 times of energy detection in the Q1 time sub-pools, respectively, the Q1 times of energy detection being energy detection in LBT, see 3GPPTS36.889 for specific definition and implementation of LBT.

As an embodiment, the first node performs Q1 times of energy detection in the Q1 time sub-pools, respectively, the Q1 times of energy detection being energy detection in CCA (Clear Channel Assessment ), the specific definition and implementation of CCA being seen in 3gpp tr36.889.

As an embodiment, the first node performs Q1 times of energy detection in the Q1 time sub-pools, respectively, and any one of the Q1 times of energy detection is implemented in a manner defined in section 4 in 3gpp ts 37.213.

As an embodiment, the first node performs Q1 times of energy detection in the Q1 time sub-pools, and any one of the Q1 times of energy detection is implemented by an energy detection manner in WiFi.

As an embodiment, the first node performs Q1 times of energy detection in the Q1 time sub-pools, respectively, and any one of the Q1 times of energy detection is implemented by measuring RSSI (Received Signal Strength Indication ).

As an embodiment, the first node performs Q1 times of energy detection in the Q1 time sub-pools, and any one of the Q1 times of energy detection is implemented by an energy detection manner in LTE LAA.

As an embodiment, the time domain resources occupied by any one of the Q1 time sub-pools are contiguous.

As an embodiment, the Q1 time sub-pools are orthogonal (non-overlapping) to each other in the time domain.

As an embodiment, the duration of any of the Q1 time sub-pools is 16 microseconds, or the duration of any of the Q1 time sub-pools is 9 microseconds.

As an embodiment, the duration of at least two time sub-pools of the Q1 time sub-pools is not equal.

As an embodiment, the durations of any two time sub-pools of the Q1 time sub-pools are equal.

As an embodiment, the time domain resources occupied by the Q1 time sub-pools are contiguous.

As an embodiment, the time domain resources occupied by at least two time sub-pools in the Q1 time sub-pools are discontinuous.

As an embodiment, the time domain resources occupied by any two time sub-pools in the Q1 time sub-pools are discontinuous.

As an embodiment, any one of the Q1 time sub-pools is a slot period (slotdutation).

As an embodiment, any of the Q1 time sub-pools is Tsl, which is a slot period, for a specific definition of Tsl, see section 4 in 3gpp ts 37.213.

As an embodiment, any time sub-pool of the Q1 time sub-pools other than the earliest time sub-pool is a slot period.

As an embodiment, any of the Q1 time sub-pools other than the earliest time sub-pool is Tsl, which is a slot period, and the specific definition of Tsl is described in section 4 of TS 37.213.

As an embodiment, at least one time sub-pool with a duration of 16 microseconds exists in the Q1 time sub-pools.

As an embodiment, at least one time sub-pool with a duration of 9 microseconds exists in the Q1 time sub-pools.

As one embodiment, the earliest time sub-pool of the Q1 time sub-pools has a duration of 16 microseconds.

As an embodiment, the last time sub-pool of the Q1 time sub-pools has a duration of 9 microseconds.

As an embodiment, the Q1 time sub-pools include listening times in Cat 4 (fourth class) LBT.

As one embodiment, the Q1 Time sub-pools include a slot period in a delay period (DeferDuration) in Cat 4LBT and a slot period in a Backoff Time (Backoff Time).

As an embodiment, the Q1 time sub-pools include a slot period in a delay period (delay duration) in Type 1UL channel access procedure (uplink channel access procedure of the first Type) and a slot period in a backoff time, and the first node is a user equipment.

As an embodiment, the Q1 time sub-pools include slot periods in an initial CCA and eCCA (Enhanced Clear Channel Assessment ).

As one embodiment, the first node performs Q1 times of energy detection in the Q1 time sub-pools, the Q1 times of energy detection being used to determine Q1 detection values, respectively, the Q1 detection values being the power of all wireless signals perceived (sensor) by the first node over the target frequency domain resource in Q time units, respectively, and being averaged over time to obtain a received power; the Q1 time units are each one duration period in the Q1 time sub-pools.

As a sub-embodiment of the above embodiment, the duration of any one of the Q1 time units is not shorter than 4 microseconds.

As one embodiment, the first node performs Q1 times of energy detection in the Q1 time sub-pools, the Q1 times of energy detection being used to determine Q1 detection values, respectively, the Q1 detection values being energies of all wireless signals perceived by the first node over the target frequency domain resource in Q time units, respectively, and being averaged over time to obtain received energies; the Q1 time units are each one duration period in the Q1 time sub-pools.

As an embodiment, the Q1 time sub-pools are consecutive in the time domain.

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

As an embodiment, the channel perception is based on Energy Detection (Energy Detection).

As an embodiment, the channel perception is based on the detection of a signature sequence.

As one embodiment, the channel awareness is based on CRC validation.

As an embodiment, a random number generator is used to initialize the first counter to Q2.

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

As an embodiment, the channel perception comprises energy detection.

As an embodiment, the channel perception comprises coherent detection of a signature sequence.

As an embodiment, the channel perception comprises incoherent detection of a signature sequence.

As one embodiment, the extended time sub-pool has a duration that is greater than the duration of any of the Q2 time sub-pools in the present application.

As an embodiment, the Q2 is greater than 1, and the duration of the Q2 time sub-pools in the present application are all the same.

As one embodiment, the duration of the extended time sub-pool is related to the subcarrier spacing over the target frequency domain resource.

As one embodiment, the duration of any one of the Q2 time sub-pools is related to a subcarrier spacing over the target frequency domain resource.

As one embodiment, the extended time sub-pool has a duration equal to the duration of any of the Q2 time sub-pools in the present application.

As one embodiment, the extended time sub-pool is no more than 16 microseconds in duration and any of the Q2 time sub-pools is no more than 9 microseconds in duration.

As one embodiment, the subcarrier spacing on the target frequency domain resource is 15kHz (kilohertz); the extended time sub-pool is 16 microseconds in duration and any of the Q2 time sub-pools is 9 microseconds in duration.

As an embodiment, the Q2 time sub-pools are back-off times in the LBT of Cat 4.

As an embodiment, the Q2 time sub-pools are CCA slots included in a back-off time in an LBT of Cat 4, respectively.

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

As one embodiment, the first node determines that the channel is busy if the first node cannot determine that the channel is idle before the target time.

As 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 target time is configured by higher layer signaling.

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

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

As an embodiment, the target time is after the expiration time of the Q1 time sub-pools.

As one embodiment, the target time instant is associated to the time position of the Q1 time sub-pools.

Example 8

Example 8 illustrates a flow chart for energy detection in a target time sub-pool, as shown in fig. 8.

The first node performs energy detection in one time slice in the target time sub-pool in step S801; determining in step S802 whether the detected energy is less than a certain threshold; if so, it is determined in step S803 that the one time slice is idle; if not, it is determined in step S804 that the one time slice is busy.

As one embodiment, the specific threshold is in dBm (millidecibel).

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

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

As an embodiment, the specific threshold is configurable.

As an embodiment, the specific threshold is a constant.

As one embodiment, the target time sub-pool comprises a plurality of consecutive time slices; the steps of fig. 8 are performed in each of the plurality of consecutive time slices; the target time sub-pool is considered to be idle if all of the plurality of consecutive time slices are considered to be idle, 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 of the Q1 time sub-pools in the present application.

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

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

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

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

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

As a sub-embodiment of the above embodiment, the time slices have 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. 8 are performed separately in each time slice of at least one time slice in the target time sub-pool; the target time sub-pool is considered to be idle if each of the at least one time slice is considered to be idle, 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 the present application.

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

As an embodiment, the energy detection complies with the approach defined in section 4 of 3gpp ts 37.213.

As an embodiment, the energy detection is an energy detection in LBT.

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

As one embodiment, the energy detection includes RSSI measurements.

As one embodiment, the unit of the detection result of the energy detection is dBm (millidecibel).

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

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

As an embodiment, the specific threshold is equal to or less than-72 dBm.

Example 9

Embodiment 9 illustrates a flowchart for determining whether to transmit a given wireless signal based on whether a channel is idle, as shown in fig. 9.

The first node judges whether a channel is idle in step S901; if so, a stator radio signal is sent on a given subband in step S902; if not, wireless transmission on the given sub-band is abandoned in step S903.

As an embodiment, the step S903 includes: zero transmit power is maintained on the given subband.

As an embodiment, the step S903 includes: and caching the information bit corresponding to the given sub-wireless signal to wait for the next sending opportunity.

As an embodiment, the step S903 includes: and continuing to perform channel sensing operation to determine time-frequency resources which can be used for transmitting information bits corresponding to the given sub-wireless signal.

As an embodiment, the given sub-radio signal is any one of the K3 first sub-radio signals in the present application, and the given sub-band is a sub-band used for transmitting the given sub-radio signal among the K3 sub-bands.

As an embodiment, the given sub-radio signal is any one of the K4 second sub-radio signals in the present application, and the given sub-band is a sub-band used for transmitting the given sub-radio signal among the K4 sub-bands.

Example 10

Embodiment 10 illustrates a schematic diagram of a time sub-pool, as shown in fig. 10. In fig. 10, a box marked with a thick 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 the one time sub-pool is not divisible by the duration of the time slice, i.e. the one time sub-pool is not exactly divided into 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 embodiment, the duration of the one time sub-pool is 16 microseconds.

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

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

Example 11

Embodiment 11 illustrates a schematic diagram of a first sub-band and a second sub-band, as shown in fig. 11. In fig. 11, the K3 first sub-radio signals in the first time unit and the K4 first sub-radio signals in the second time unit are the initial transmission and retransmission for the first bit block, respectively. As shown in the figure, the K2 subbands correspond to subbands #1 to #8 in the figure, respectively, the subbands #1 to #8 are reserved for transmitting CBG #1 to CBG #8, respectively, and the CBG #7 and CBG #8 are abandoned to be transmitted because the subbands #7 and #8 are occupied in a first time unit (channel-aware determination is performed); in a second time unit, all of sub-bands #1 to #8 are determined to be idle after channel sensing, the sub-band #1 is used to determine the sub-band occupied by CBG #7 in the second time unit, and the sub-band #2 is used to determine the sub-band occupied by CBG #8 in the second time unit.

As an embodiment, the cbg#7 is mapped into a sub-band other than the sub-band#7 in the second time unit.

As an embodiment, the cbg#8 is mapped into a sub-band outside the sub-band#8 in the second time unit.

As an embodiment, the cbg#7 and the cbg#8 are sequentially mapped to sub-bands other than the sub-band#7 and the sub-band#8 in the second time unit according to the size of the sub-band sequence number in sequence according to the sequence number corresponding to the CBG.

Example 12

Embodiment 12 illustrates a schematic diagram of another first sub-band and second sub-band, as shown in fig. 12. In fig. 12, the first time unit and the second time unit correspond to two repeated transmissions of one TB, respectively, and the first time unit and the second time unit are consecutive in the time domain. The K1 sub-bands in the first time unit are reserved for cbg#1 to cbg#k1, respectively, channel perception on K3 sub-bands of the K1 sub-bands determines that the K3 sub-bands are idle, K3 CBGs of the K1 CBGs corresponding to the K3 sub-bands are transmitted by the first node, and CBGs other than the K3 CBGs among the K1 CBGs are transmitted in the second time unit.

In embodiment 12, the K1 is equal to 8, the K1 sub-band and the K2 sub-band in the present application are sub-band #1 to sub-band #8, respectively, and the K1 CBGs are CBG #1 to CBG #8, respectively; the K3 is equal to 6, and the K3 subbands and the K4 subbands in the present application are subbands #1 to #6, respectively; cbg#7 and cbg#8 shown in the figure are not transmitted in the first time unit and are transmitted in the second time unit; the cbg#7 and cbg#8 occupy the sub-band #1 and sub-band #2 in the second time unit.

As an embodiment, in the second time unit, there are two CBGs respectively employing different RV versions.

As a sub-embodiment of this embodiment, as shown in the figure, cbg#7 and cbg#8 transmitted in the second time unit employ a first redundancy version, and cbg#1 to cbg#4 transmitted in the second time unit employ a second redundancy version.

As a sub-embodiment of this embodiment, as shown in the figure, cbg#7 and cbg#8 transmitted in the second time unit employ the same redundancy version as cbg#1 to cbg#6 transmitted in the first time unit.

Example 13

Embodiment 13 illustrates a block diagram of the structure in a first node, as shown in fig. 13. In fig. 13, a first node 1300 includes a first transceiver 1301 and a second transceiver 1302.

A first transceiver 1301 for receiving K3 first sub-wireless signals in K3 sub-bands among K1 sub-bands in a first time unit, respectively;

a second transceiver 1302 for receiving K4 second sub-wireless signals in K4 sub-bands among the K2 sub-bands in the second time unit, respectively;

in embodiment 13, the K1 sub-bands are reserved for the K1 first sub-radio signals, respectively, and the K1 first sub-radio signals include any one of the K4 first sub-radio signals; the K2 sub-frequency bands are reserved for the K2 second sub-wireless signals respectively, and the K2 second sub-wireless signals comprise any one of the K4 second sub-wireless signals; a first sub-band being one of the K1 sub-bands and being other than the K3 sub-bands, the first sub-band being occupied in the first time unit, the first sub-band being reserved for a first target sub-radio signal of the K1 first sub-radio signals; a second sub-band is one of the K4 sub-bands, the second sub-band being idle in the second time unit, the second sub-band being used for transmitting a second target sub-radio signal of the K2 second sub-radio signals; the first target sub-radio signal and the second target sub-radio signal are both used to carry target bit sub-blocks; the first sub-band is used to determine the second sub-band; the K1 sub-bands are all deployed in unlicensed spectrum, and the K2 sub-bands are all deployed in unlicensed spectrum; the K1 and the K2 are positive integers greater than 1; the K3 is a positive integer less than the K1, and the K4 is a positive integer not greater than the K2.

As one embodiment, the K3 subbands are all idle in the first time unit, the first subband being a subband of the K1 subbands and other than the K3 subbands; the K4 subbands are each free in the second time unit, and the second subband is one of the K4 subbands.

As an embodiment, the start time of the second time unit is later than the end time of the first time unit, the K4 sub-bands are used for transmitting K4 second sub-radio signals of the K2 second sub-radio signals, and a given second sub-radio signal exists in the K4 second sub-radio signals, and the given second sub-radio signal and the second target sub-radio signal adopt different redundancy versions.

For one embodiment, the second transceiver 1302 transmits first information; the first information is used to determine that the first target sub-wireless signal was not received correctly; the starting time of the second time unit is later than the sending time of the first information.

As an embodiment, the first transceiver 1301 receives a first signaling; the first signaling is used to determine the K3 subbands.

For one embodiment, the second transceiver 1302 receives second signaling; the second signaling is used to determine the K4 subbands.

As an embodiment, the first transceiver 1301 operates the third signaling; the third signaling comprises HARQ process numbers corresponding to the K1 first sub-wireless signals; the operation is a reception or the operation is a transmission.

For one embodiment, the second transceiver 1302 operates fourth signaling; the fourth signaling comprises HARQ process numbers corresponding to the K2 second sub-wireless signals; the operation is a reception or the operation is a transmission.

As one embodiment, the first transceiver 1301 includes at least the first 6 of the antenna 452, the transmitter/receiver 454, the multi-antenna transmit processor 457, the multi-antenna receive processor 458, the transmit processor 468, the receive processor 456, and the controller/processor 459 in embodiment 4.

As one example, the second transceiver 1302 includes at least the first 6 of the antenna 452, the transmitter/receiver 454, the multi-antenna transmit processor 457, the multi-antenna receive processor 458, the transmit processor 468, the receive processor 456, and the controller/processor 459 of example 4.

Example 14

Embodiment 14 illustrates a block diagram of the structure in a second node, as shown in fig. 14. In fig. 14, the second node 1400 includes a third transceiver 1401 and a fourth transceiver 1402.

A third transceiver 1401 which transmits K3 first sub-radio signals in K3 sub-bands among K1 sub-bands in the first time unit, respectively;

a fourth transceiver 1402 that transmits K4 second sub-wireless signals in K4 sub-bands among K2 sub-bands in the second time unit, respectively;

in embodiment 14, the K1 sub-bands are reserved for the K1 first sub-radio signals, respectively, and the K1 first sub-radio signals include any one of the K4 first sub-radio signals; the K2 sub-frequency bands are reserved for the K2 second sub-wireless signals respectively, and the K2 second sub-wireless signals comprise any one of the K4 second sub-wireless signals; a first sub-band being one of the K1 sub-bands and being other than the K3 sub-bands, the first sub-band being occupied in the first time unit, the first sub-band being reserved for a first target sub-radio signal of the K1 first sub-radio signals; a second sub-band is one of the K4 sub-bands, the second sub-band being idle in the second time unit, the second sub-band being used for transmitting a second target sub-radio signal of the K2 second sub-radio signals; the first target sub-radio signal and the second target sub-radio signal are both used to carry target bit sub-blocks; the first sub-band is used to determine the second sub-band; the K1 sub-bands are all deployed in unlicensed spectrum, and the K2 sub-bands are all deployed in unlicensed spectrum; the K1 and the K2 are positive integers greater than 1; the K3 is a positive integer less than the K1, and the K4 is a positive integer not greater than the K2.

As one embodiment, the third transceiver 1401 performs channel sensing in the K1 sub-bands to determine whether a channel is idle; the channel awareness is used to determine that the K3 of the K1 subbands are idle.

As one embodiment, the fourth transceiver 1402 performs channel sensing in the K2 subbands to determine whether a channel is idle; the channel awareness is used to determine that the K4 of the K2 subbands are idle.

As an embodiment, the K4 is greater than 1, the start time of the second time unit is later than the end time of the first time unit, and a given second sub-radio signal exists in the K4 second sub-radio signals, and the given second sub-radio signal and the second target sub-radio signal adopt different redundancy versions.

As one embodiment, the fourth transceiver 1402 receives the first information; the first information is used to determine that the first target sub-wireless signal was not received correctly; the starting time of the second time unit is later than the sending time of the first information.

For one embodiment, the third transceiver 1401 transmits a first signaling; the first signaling is used to determine the K3 subbands.

As an embodiment, the fourth transceiver 1402 sends second signaling; the second signaling is used to determine the K4 subbands.

For one embodiment, the third transceiver 1401 handles third signaling; the third signaling comprises HARQ process numbers corresponding to the K1 first sub-wireless signals; the process is either transmitting or receiving.

As an embodiment, the fourth transceiver 1402 processes fourth signaling; the fourth signaling comprises HARQ process numbers corresponding to the K2 second sub-wireless signals; the process is either transmitting or receiving.

As one example, the third transceiver 1401 includes at least the first 6 of the antenna 420, the transmitter/receiver 418, the multi-antenna transmit processor 471, the multi-antenna receive processor 472, the transmit processor 416, the receive processor 470, and the controller/processor 475 of example 4.

As one example, the fourth transceiver 1402 includes at least the former 6 of the antenna 420, the transmitter/receiver 418, the multi-antenna transmit processor 471, the multi-antenna receive processor 472, the transmit processor 416, the receive processor 470, and the controller/processor 475 of example 4.

Those of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described methods may be implemented by a program that instructs associated hardware, and the program may be stored on 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 using one or more integrated circuits. Accordingly, each module unit in the above embodiment may be implemented in a hardware form or may be implemented in a software functional module form, and the application is not limited to any specific combination of software and hardware. The first node and the second node in the application include, but are not limited to, mobile phones, tablet computers, notebooks, network cards, low power consumption devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, vehicles, RSUs, aircrafts, airplanes, unmanned aerial vehicles, remote control aircrafts and other wireless communication devices. The base station in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, an eNB, a gNB, a transmission receiving node TRP, a GNSS, a relay satellite, a satellite base station, an air base station, an RSU, and other wireless communication devices.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application are intended to be included within the scope of the present application.

Claims

1. A first node device for wireless communication, comprising:

2. The first node device of claim 1, wherein the K3 sub-bands are each idle in the first time unit, the first sub-band being a sub-band of the K1 sub-bands and outside the K3 sub-bands; the K4 subbands are each free in the second time unit, and the second subband is one of the K4 subbands.

3. The first node device according to claim 1 or 2, wherein K4 is greater than 1, the start time of the second time unit is later than the end time of the first time unit, the K4 sub-bands are used for transmitting K4 second sub-radio signals of the K2 second sub-radio signals, respectively, there is a given second sub-radio signal of the K4 second sub-radio signals, and the given second sub-radio signal and the second target sub-radio signal use different redundancy versions.

4. A first node device according to any of claims 1-3, characterized in that the first bit block comprises K1 bit sub-blocks, said target bit sub-block being one of said K1 bit sub-blocks, said K1 first sub-radio signals being used for carrying said K1 bit sub-blocks, respectively, said first bit block corresponding to one HARQ process number.

5. The first node device of any of claims 1-4, wherein the second transceiver transmits first information; the first information is used to determine that the first target sub-wireless signal was not received correctly; the starting time of the second time unit is later than the sending time of the first information.

6. The first node device of any of claims 2-5, wherein the first transceiver receives first signaling; the first signaling is used to determine the K3 subbands.

7. The first node device of any of claims 2 to 6, wherein the second transceiver receives second signaling; the second signaling is used to determine the K4 subbands.

8. A second node device for wireless communication, comprising:

9. The second node device of claim 8, wherein the second node device is configured to,

the K3 subbands are all idle in the first time unit, the first subband being a subband of the K1 subbands and other than the K3 subbands; the K4 subbands are each free in the second time unit, and the second subband is one of the K4 subbands.

10. The second node device according to claim 8 or 9, wherein K4 is greater than 1, the start time of the second time unit is later than the end time of the first time unit, and a given second sub-radio signal exists in the K4 second sub-radio signals, and the given second sub-radio signal and the second target sub-radio signal use different redundancy versions.

11. The second node device according to any of claims 8-10, wherein a first bit block comprises K1 bit sub-blocks, the target bit sub-block being one of the K1 bit sub-blocks, the K1 first sub-radio signals being used to carry the K1 bit sub-blocks, respectively, the first bit block corresponding to one HARQ process number.

12. The second node device according to any of claims 8-11, wherein the fourth transceiver receives the first information; the first information is used to determine that the first target sub-wireless signal was not received correctly; the starting time of the second time unit is later than the sending time of the first information.

13. The second node device according to any of claims 8-12, wherein the third transceiver transmits first signaling; the first signaling is used to determine the K3 subbands.

14. The second node device according to any of claims 8-13, wherein the fourth transceiver transmits second signaling; the second signaling is used to determine the K4 subbands.

15. A method in a first node for wireless communication, comprising:

16. The method in the first node of claim 15, wherein the K3 subbands are each idle in the first time unit, the first subband being a subband of the K1 subbands and other than the K3 subbands; the K4 subbands are each free in the second time unit, and the second subband is one of the K4 subbands.

17. The method according to claim 15 or 16, wherein K4 is greater than 1, the start time of the second time unit is later than the end time of the first time unit, the K4 sub-bands are used for transmitting K4 second sub-radio signals of the K2 second sub-radio signals, respectively, there is a given second sub-radio signal of the K4 second sub-radio signals, and the given second sub-radio signal and the second target sub-radio signal use different redundancy versions.

18. The method in a first node according to any of the claims 15 to 17, characterized in,

the first bit block comprises K1 bit sub-blocks, the target bit sub-block is one of the K1 bit sub-blocks, the K1 first sub-wireless signals are respectively used for bearing the K1 bit sub-blocks, and the first bit block corresponds to one HARQ process number.

19. The method in a first node according to any of the claims 15 to 18, comprising:

transmitting first information;

20. The method in the first node of claim 19, comprising:

receiving a first signaling;

wherein the first signaling is used to determine the K3 subbands.

21. The method in a first node according to any of the claims 15 to 20, comprising:

receiving a second signaling;

wherein the second signaling is used to determine the K4 subbands.

22. A method in a second node for wireless communication, comprising:

23. The method in the second node of claim 22, wherein the K3 subbands are each idle in the first time unit, the first subband being a subband of the K1 subbands and other than the K3 subbands; the K4 subbands are each free in the second time unit, and the second subband is one of the K4 subbands.

24. A method in a second node according to claim 22 or 23, comprising:

and the K4 is larger than 1, the starting time of the second time unit is later than the ending time of the first time unit, a given second sub-wireless signal exists in the K4 second sub-wireless signals, and the given second sub-wireless signal and the second target sub-wireless signal adopt different redundancy versions.

25. The method in a second node according to any of claims 22-24, wherein a first bit block comprises K1 bit sub-blocks, the target bit sub-block being one of the K1 bit sub-blocks, the K1 first sub-radio signals being used to carry the K1 bit sub-blocks, respectively, the first bit block corresponding to one HARQ process number.

26. A method in a second node according to any of claims 22-25, comprising:

receiving first information;

27. A method in a second node according to any of claims 22-26, comprising:

processing the first signaling;

28. A method in a second node according to any of claims 22-27, comprising:

processing the second signaling;