A system and method for signal transmission

Abstract

A system and method for satisfying the delay and reliability requirements of URLLC signal transmission. The system and method include receiving, by a wireless communication device, a signal indicating a plurality of resource block (RB) sets transmitting a plurality of uplink channels on an unlicensed frequency band from a wireless communication node; determining, by the wireless communication device, that one or more of the plurality of RB sets have passed a channel access procedure; and transmitting, by the wireless communication device, a first uplink channel of the plurality of uplink channels to the wireless communication node.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communications, and more particularly, to systems and methods for meeting delay and reliability requirements for signal transmission for Ultra-Reliable Low Latency Communications (URLLC). Background Art

[0002] The third generation partnership project (3GPP), a standardization organization, is currently in the process of specifying a new radio interface called 5G New Radio (5G NR). The 5G NR system supports various services, such as ultra-reliable low latency communication (URLLC) services. URLLC services provide support for high reliability and low latency services. In some cases, URLLC services can provide reliability of up to 99.9999% block error rate with air interface transmission delay within 1 millisecond. Summary of the invention

[0003] The exemplary embodiments disclosed herein are intended to solve problems related to one or more problems existing in the prior art, as well as to provide additional features, which will become apparent by reference to the following detailed description in conjunction with the accompanying drawings. According to various embodiments, exemplary systems, methods, devices, and computer program products are disclosed herein. However, it should be understood that these embodiments are presented by way of example rather than limitation, and it is apparent to those of ordinary skill in the art who read this disclosure that various modifications may be made to the disclosed embodiments while remaining within the scope of this disclosure.

[0004] In one embodiment, a method includes a wireless communication device (e.g., Figure 1 UE 104 in the example) from a wireless communication node (e.g., Figure 1 In some embodiments, the method includes a wireless communication device determining that one or more of the plurality of RB sets have passed a channel access procedure (e.g., including CCA). In some embodiments, the method includes the wireless communication device transmitting a first uplink channel (e.g., PUSCH 0) of the plurality of uplink channels to the wireless communication node.

[0005] In another embodiment, a method includes a wireless communication node transmitting a signal indicating a plurality of resource block (RB) sets for transmitting a plurality of uplink channels on an unlicensed frequency band to a wireless communication device. In some embodiments, the signal causes the wireless communication device to: determine that one or more of the plurality of RB sets have passed a channel access procedure, and transmit a first uplink channel of the plurality of uplink channels to the wireless communication node. In some embodiments, the method includes the wireless communication node receiving a first uplink channel of the plurality of uplink channels from the wireless communication device.

[0006] The above and other aspects and embodiments thereof are described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Various example embodiments of the present solution are described in detail below with reference to the following figures or drawings. The drawings are provided for illustrative purposes only and only depict example embodiments of the present solution to facilitate the reader's understanding of the present solution. Therefore, the drawings should not be considered to limit the breadth, scope or applicability of the present solution. It should be noted that for clarity and ease of illustration, these drawings are not necessarily drawn to scale.

[0008] Figure 1 An exemplary cellular communication network is shown in which the techniques disclosed herein may be implemented according to an embodiment of the present disclosure.

[0009] Figure 2 A block diagram of an exemplary base station and user equipment according to some embodiments of the present disclosure is shown.

[0010] Figure 3 A block diagram illustrating an exemplary mapping of PUSCH configurations according to some embodiments of the present disclosure is shown.

[0011] Figure 4 A block diagram illustrating an exemplary mapping of PUSCH configurations according to some embodiments of the present disclosure is shown.

[0012] Figure 5 A block diagram illustrating an exemplary mapping of PUSCH configurations according to some embodiments of the present disclosure is shown.

[0013] Figure 6 A block diagram illustrating an exemplary mapping of PUSCH configurations according to some embodiments of the present disclosure is shown.

[0014] Figure 7 A block diagram illustrating an exemplary mapping of PUSCH configurations according to some embodiments of the present disclosure is shown.

[0015] Figure 8is a flow chart depicting a method for satisfying delay and reliability requirements for signal transmission for Ultra-Reliable Low Latency Communication (URLLC) from the perspective of a UE according to some embodiments of the present disclosure.

[0016] Fig. 9 is a flow chart depicting a method for satisfying delay and reliability requirements for signal transmission for Ultra-Reliable Low Latency Communication (URLLC) from the perspective of a BS according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0017] Various example embodiments of the present solution are described below with reference to the accompanying drawings to enable a person of ordinary skill in the art to make and use the present solution. It will be apparent to a person of ordinary skill in the art that, after reading this disclosure, various changes or modifications may be made to the examples described herein without departing from the scope of the present solution. Therefore, the present solution is not limited to the example embodiments and applications described and illustrated herein. In addition, the specific order or hierarchy of steps in the methods disclosed herein are merely example methods. Based on design preferences, the specific order or hierarchy of steps of the disclosed methods or processes may be rearranged while remaining within the scope disclosed in the present solution. Therefore, a person of ordinary skill in the art will understand that the methods and techniques disclosed herein present various steps or actions in a sample order, and unless otherwise expressly stated, the present solution is not limited to the specific order or hierarchy presented.

[0018] The following acronyms are used throughout this disclosure:

[0019] 3GPP: Third Generation Partnership Project

[0020] 5G: The fifth generation of mobile networks

[0021] 5G-AN: 5G Access Network

[0022] 5G gNB: Next Generation Node B

[0023] CBG: Coded Block Group

[0024] CCA: Clear Channel Access

[0025] CE: Control Element

[0026] CG: Configuration authorization

[0027] COT: Channel Occupancy Time

[0028] DCI: Downlink Control Information

[0029] DG: Dynamic Authorization

[0030] DL: Downlink

[0031] eMBB: enhanced mobile broadband

[0032] eNB: Evolved Node B

[0033] ETSI: European Telecommunications Standards Institute

[0034] LBT: Listen before speaking / Listen before sending

[0035] LTE: Long Term Evolution

[0036] MAC: Media Access Control

[0037] MSC: Mobile Switching Center

[0038] NAS: Non-Access Stratum

[0039] NR: Next Generation RAN

[0040] OFDM: Orthogonal Frequency Division Multiplexing

[0041] OFDMA: Orthogonal Frequency Division Multiple Access

[0042] OSI: Open Systems Interconnection

[0043] PDCP: Packet Data Convergence Protocol

[0044] RAN: Radio Access Network

[0045] RLC: Radio Link Control

[0046] RRC: Radio Resource Control

[0047] RV: Redundant Version

[0048] TB: Transport Block

[0049] UE: User Equipment

[0050] UL: Uplink

[0051] URLLC: Ultra-Reliable Low-Latency Communications

[0052] Future wireless communication systems (e.g., 5G NR) support various services, such as ultra-reliable low-latency communication (URLLC) services. URLLC services provide support for highly reliable and low-latency services. In some cases, URLLC services can provide reliability of up to 99.9999% block error rate, with air interface transmission delay within 1 millisecond.

[0053] However, when the network side (for example, Figure 1When the BS 102 in the UE schedules multiple PUSCHs for signal transmission, the URLLC service may not be able to provide such a high reliability rate. For example, if the UE only seizes a portion of the PUSCH frequency domain resources, it may be difficult to determine how to perform signal transmission during this period of time. That is, if the URLLC data arrives in the middle of the PUSCH transmission, and if the URLLC data is scheduled again after the PUSCH transmission ends, the delay requirements of the URLLC may not be met. Therefore, when signal transmission occurs on the current PUSCH, a mechanism is needed to determine how to achieve the delay requirements required by the URLLC to provide high reliability.

[0054] Thus, the systems and methods discussed herein provide a mechanism for meeting (eg, satisfying, etc.) the delay and reliability requirements of signal transmission for URLLC.

[0055] Generally, as discussed in more detail below, when the UE successfully performs CCA on a portion of the LBT bandwidth, the UE may send (e.g., transmit, deliver, etc.) one or more PUSCHs. In some embodiments (hereinafter also referred to as "method one"), the UE may send the PUSCH in a CBG-based manner, wherein each CBG may be independently encoded / coded (e.g., arranged, classified, collected, etc.).

[0056] In some embodiments (hereinafter also referred to as "method two"), the UE may transmit one or more PUSCHs, and the UE may determine the size of the transport block based on the available resources in the LBT band. In some embodiments, the transport block may be mapped (e.g., linked, arranged, organized, etc.) to one or more LBT bandwidths after being coded and modulated, respectively, wherein the redundancy versions (RVs) of the transport blocks mapped to different LBT bandwidths may be the same or different.

[0057] In some embodiments (hereinafter also referred to as "method three"), the UE does not send PUSCH on the first N symbols of the configured resources, or instead, may send a channel preemption signal on the first N symbols of the configured resources. In some embodiments, the UE may send PUSCH after N symbols. In some embodiments, the UE may send PUCCH after N symbols, and / or the PUCCH may carry (e.g., include, etc.) LBT bandwidth information, the UE transmits an uplink signal on the LBT bandwidth information and / or repeatedly sends PUCCH on multiple LBT bandwidths.

[0058] In some embodiments, the PUSCH transmission method used by the UE is configured by the network side. In some embodiments, there may be a coupling relationship between the service priority and the PUSCH transmission method. In some embodiments, when indicating that a first priority service is to be sent, the UE may use "Method One" (as discussed herein); when indicating that a second priority service is to be sent, the UE may use "Method Two" (as discussed herein); when indicating that a third priority service is to be sent, the UE may use "Method Three" (as discussed herein).

[0059] 1. Mobile communication technology and environment

[0060] Figure 1 An example wireless communication network and / or system 100 is shown in accordance with an embodiment of the present disclosure, in which the techniques disclosed herein may be implemented. In the following discussion, the wireless communication network 100 may be any wireless network, such as a cellular network or a narrowband Internet of Things (NB-IoT) network, and is referred to herein as "network 100." Such an example network 100 includes a base station 102 (hereinafter referred to as "BS 102," also referred to as a wireless communication node) and a user equipment 104 (hereinafter referred to as "UE 104," also referred to as a wireless communication device), which may communicate with each other via a communication link 110 (e.g., a wireless communication channel), and includes cell clusters 126, 130, 132, 134, 136, 138, and 140 covering a geographic area 101. In Figure 1 1, BS 102 and UE 104 are contained within the respective geographic boundaries of cell 126. Each of the other cells 130, 132, 134, 136, 138, and 140 may include at least one base station operating over its allocated bandwidth to provide adequate wireless coverage to its intended users.

[0061] For example, BS 102 may operate under an allocated channel transmission bandwidth to provide sufficient coverage to UE 104. BS 102 and UE 104 may communicate via downlink radio frames 118 and uplink radio frames 124, respectively. Each radio frame 118 / 124 may be further divided into subframes 120 / 127, which may include data symbols 122 / 128. In the present disclosure, BS 102 and UE 104 are described herein as non-limiting examples of "communication nodes", which may generally implement the methods disclosed herein. According to various embodiments of the present solution, such communication nodes are capable of wireless and / or wired communication.

[0062] Figure 2A block diagram of an example wireless communication system 200 for sending and receiving wireless communication signals (e.g., OFDM / OFDMA signals) according to some embodiments of the present solution is shown. The system 200 may include components and elements configured to support known or conventional operating features that need not be described in detail herein. In an illustrative embodiment, as described above, the system 200 may be used in applications such as Figure 1 The wireless communication environment 100 may be used to transmit (eg, send and receive) data symbols.

[0063] The system 200 generally includes a base station 202 (hereinafter referred to as "BS 202") and a user equipment 204 (hereinafter referred to as "UE 204"). The BS 202 includes a BS (base station) transceiver module 210, a BS antenna 212, a BS processor module 214, a BS memory module 216, and a network communication module 218, each of which is coupled and interconnected to each other via a data communication bus 220 as needed. The UE 204 includes a UE (user equipment) transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, each of which is coupled and interconnected to each other via a data communication bus 240 as needed. The BS 202 communicates with the UE 204 via a communication channel 250, which can be any wireless channel or other medium suitable for data transmission as described herein.

[0064] As will be appreciated by those skilled in the art, the system 200 may also include Figure 2 Any number of modules outside the modules shown. It will be appreciated by those skilled in the art that the various illustrative blocks, modules, circuits, and processing logic described in conjunction with the embodiments disclosed herein can be implemented in hardware, computer-readable software, firmware, or any actual combination thereof. In order to clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps are generally described according to their functions. Whether such functions are implemented in hardware, firmware, or software depends on the specific application and the design constraints imposed on the entire system. People familiar with the concepts described herein can implement such functions in an appropriate manner for each specific application, but such implementation decision should not be interpreted as limiting the scope of the present disclosure.

[0065] According to some embodiments, the UE transceiver 230 may be referred to herein as an "uplink" transceiver 230, which includes a radio frequency (RF) transmitter and an RF receiver, each of which includes circuitry coupled to an antenna 232. A duplex switch (not shown) may alternatively couple the uplink transmitter or receiver to the uplink antenna in a time duplex manner. Similarly, according to some embodiments, the BS transceiver 210 may be referred to herein as a "downlink" transceiver 210, which includes an RF transmitter and an RF receiver, each of which includes circuitry coupled to an antenna 212. The downlink duplex switch may alternatively couple the downlink transmitter or receiver to the downlink antenna 212 in a time duplex manner. The operation of the two transceiver modules 210 and 230 may be coordinated in time such that the uplink receiver circuit is coupled to the uplink antenna 232 to receive transmissions over the wireless transmission link 250 while the downlink transmitter is coupled to the downlink antenna 212. Conversely, the operation of the two transceivers 210 and 230 may be coordinated in time such that the downlink receiver is coupled to the downlink antenna 212 for receiving transmissions on the wireless transmission link 250 while the uplink transmitter is coupled to the uplink antenna 232. In some embodiments, there is tight time synchronization with minimal guard times between changes in duplex direction.

[0066] The UE transceiver 230 and the base station transceiver 210 are configured to communicate via a wireless data communication link 250 and cooperate with an appropriately configured RF antenna arrangement 212 / 232 that can support a specific wireless communication protocol and modulation scheme. In some illustrative embodiments, the UE transceiver 210 and the base station transceiver 210 are configured to support industry standards such as Long Term Evolution (LTE) and emerging 5G standards. However, it should be understood that the present disclosure is not necessarily limited to specific standards and related protocols in application. Instead, the UE transceiver 230 and the base station transceiver 210 can be configured to support alternative or additional wireless data communication protocols, including future standards or variations thereof.

[0067] According to various embodiments, BS 202 may be an evolved Node B (eNB), a serving eNB, a target eNB, a femtocell or a microcell. In some embodiments, UE 204 may be embodied in various types of user equipment, such as a mobile phone, a smart phone, a personal digital assistant (PDA), a tablet computer, a notebook computer, a wearable computing device, etc. Processor modules 214 and 236 may be implemented or implemented using a general purpose processor, a content addressable memory, a digital signal processor, an application specific integrated circuit, a field programmable gate array, any suitable programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, in order to perform the functions described herein. In this manner, the processor may be implemented as a microprocessor, a controller, a microcontroller, a state machine, etc. The processor may also be implemented as a combination of computing devices, for example, a combination of a digital signal processor and a microprocessor, a combination of multiple microprocessors, one or more microprocessors and a digital signal processor core, or any other such configuration.

[0068] In addition, the steps of the methods or algorithms described in conjunction with the embodiments disclosed herein may be directly embodied in hardware, firmware, software modules executed by the processor modules 214 and 236, respectively, or in any practical combination thereof. The memory modules 216 and 234 may be implemented as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. In this regard, the memory modules 216 and 234 may be coupled to the processor modules 210 and 230, respectively, so that the processor modules 210 and 230 can read information from and write information to the memory modules 216 and 234, respectively. The memory modules 216 and 234 may also be integrated into the respective processor modules 210 and 230. In some embodiments, the memory modules 216 and 234 may each include a cache for storing temporary variables or other intermediate information during the execution of instructions to be executed by the processor modules 210 and 230, respectively. Memory modules 216 and 234 may also each include non-volatile memory for storing instructions to be executed by processor modules 210 and 230, respectively.

[0069] The network communication module 218 generally represents the hardware, software, firmware, processing logic and / or other components of the base station 202, which implement bidirectional communication between the base station transceiver 210 and other network components and communication nodes configured to communicate with the base station 202. For example, the network communication module 218 can be configured to support Internet or WiMAX traffic. In a typical deployment, without limitation, the network communication module 218 provides an 802.3 Ethernet interface so that the base station transceiver 210 can communicate with a conventional Ethernet-based computer network. In this way, the network communication module 218 can include a physical interface for connecting to a computer network (e.g., a mobile switching center (MSC)). The terms "configured for", "configured to" and their conjunctions, as used herein with respect to a specified operation or function, refer to a device, component, circuit, structure, machine, signal, etc. that is physically constructed, programmed, formatted and / or arranged to perform a specified operation or function.

[0070] The open systems interconnection (OSI) model (referred to herein as the "open systems interconnection model") is a concept and logical layout that defines network communications used by systems (e.g., wireless communication devices, wireless communication nodes) to openly interconnect and communicate with other systems. The model is divided into seven subcomponents or layers, each of which represents a conceptual set of services provided to its upper and lower layers. The OSI model also defines a logical network and effectively describes computer data packet delivery by using different layer protocols. The OSI model may also be referred to as a seven-layer OSI model or a seven-layer model. In some embodiments, the first layer may be a physical layer. In some embodiments, the second layer may be a media access control (MAC) layer. In some embodiments, the third layer may be a radio link control (RLC) layer. In some embodiments, the fourth layer may be a packet data convergence protocol (PDCP) layer. In some embodiments, the fifth layer may be a radio resource control (RRC) layer. In some embodiments, the sixth layer may be a non-access stratum (NAS) layer or an Internet protocol (IP) layer, and the seventh layer is another layer.

[0071] Overview of 2.5G signal transmission

[0072] In a wireless communication system, the system bandwidth may be divided into a plurality of frequency domain parts, and each frequency domain part occupies a certain amount of frequency domain resources. The size of the frequency domain resources occupied by each frequency domain part may be configured by the network side or predefined by the specification. Each frequency domain part is also referred to as a listen-before-talk / listen-before-send (LBT) bandwidth, also referred to as an RB set. There may or may not be a guard interval between two consecutive LBT bandwidths. The sender may perform a channel access procedure before sending a signal. If the UE detects that the energy (or power) of the received signal is less than a threshold value within a time interval, it may be determined that the current channel is idle and the sender may send a signal. If the energy (or power) of the received signal is equal to or greater than the threshold value, the current channel is considered to be busy and the sender cannot transmit a signal. This process is called a channel access process, also known as idle channel access (CCA). If the channel is sensed to be idle, the CCA may be considered successful. If the channel is sensed to be busy, the CCA may be considered to have failed. Channel occupancy refers to one or more transmissions made by the sender on the channel after performing the corresponding channel access procedure. Channel occupancy time refers to the total time that the eNB / gNB / UE and any eNB / gNB / UE occupying the shared channel perform one or more transmissions on the channel after the eNB / gNB / UE performs the corresponding channel access procedure.

[0073] After the network side successfully performs CCA (for example, CCA is successful), a signal can be sent. The network side can also notify the UE of the channel preemption (for example, channel occupancy) information (including time domain information and / or frequency domain information of the channel preemption (for example, channel occupancy)). The time domain information includes time resource information and / or end time of the channel preemption (for example, channel occupancy) that can be used by the network side or the UE. Here, we refer to the end time of the channel preemption (for example, channel occupancy) that can be used by the network side or the UE as the COT (channel occupancy time) boundary.

[0074] In a wireless communication system, the network side schedules the UE for uplink transmission. The network side uses DCI to send all the required parameters for uplink transmission of the UE. That is, the uplink transmission is scheduled by DCI. This scheduling method is also called dynamic grant (DG). The network uses RRC signaling to send all the required parameters for uplink transmission of the UE. That is, the uplink transmission is scheduled by RRC signaling. Or the network uses RRC signaling to send part of the required parameters for uplink transmission, and then uses DCI to send the remaining required parameters for uplink transmission. That is, uplink transmission is scheduled by RRC signaling and DCI. Both scheduling methods are called configuration grant (CG). In the present invention, the uplink transmission scheduled by the network side includes the above-mentioned scheduling modes.

[0075] In a wireless communication system, the network side configures the time-frequency domain resources of PDCCH for the UE. In addition, the time-domain resources are periodic resources. The network side can send PDCCH to the UE on the time-frequency domain resources of each PDCCH. The UE needs to monitor the PDCCH on the time-frequency resources of each PDCCH. Here, each time-domain resource that can send PDCCH is also called PDCCH scheduling opportunity.

[0076] 3. Exemplary Embodiment: Group 1

[0077] In some embodiments, the network side may use DCI and / or RRC signaling to configure (e.g., arrange, schedule, adjust, initialize, etc.) the UE to send (e.g., transmit, transfer, etc.) uplink signals on multiple LBT bandwidths. In some embodiments, its uplink frequency domain resources may include multiple LBT bandwidths. In some embodiments, the UE may use a CBG-based transmission mode. In some embodiments, the transport block size may be determined based on the available resources configured by the network side. In other words, the size of the transport block may be determined based on the available resources of multiple LBT bandwidths. In some embodiments, the UE may independently encode and modulate each CBG. In some embodiments, when modulation symbols are mapped to uplink transmission resources, the mapping rule may be mapped in the order of frequency domain first, time domain later, and then LBT bandwidth. In some embodiments, modulation symbols are only mapped to LBT bandwidths where CCA is successful. In some embodiments, modulation symbols can only be mapped to the LBT bandwidth when the previous LBT bandwidth is fully mapped to the modulation symbol. In some embodiments, the UE transmits signals only on the LBT bandwidth where CCA is successful. That is, the UE cancels (e.g., discards, punctures, etc.) the modulation symbols or signals mapped to the LBT bandwidth where CCA fails. In other words, the modulation symbol or signal mapped to the LBT bandwidth where the CCA fails is not transmitted. That is, only part of the CBG of the transport block is transmitted.

[0078] Figure 3 A block diagram of an exemplary mapping 300 of PUSCH configurations according to some embodiments of the present disclosure is shown. Figure 3As shown, the PUSCH configured by the network side occupies 4 LBT bandwidths in the frequency domain (indicating LBT bandwidths 1, 2, 3, and 4, respectively), and the configuration signaling is RRC signaling and / or DCI. The UE uses a CBG-based method for transmission. The transport block for PUSCH transmission is determined according to the available resources configured by the network side. In other words, the transport block for PUSCH transmission is determined based on the available resources of LBT bandwidths 1, 2, 3, and 4. The PUSCH (or transport block) includes 8 CBGs (respectively represented as CBG 0 to 7), and the UE independently encodes and modulates each CBG. The 8 CBGs are mapped to the PUSCH resources in the order of frequency domain first, time domain second, and then LBT bandwidth. Among them, CBG 0 to 1 is mapped to LBT bandwidth 1, CBG 2 to 3 is mapped to LBT bandwidth 2, and CBG 4 to 5 is mapped to LBT bandwidth 3, and CBG 6 to 7 is mapped to LBT bandwidth 4. CCA is successful on LBT bandwidths 2 and 3, and then the UE only sends signals within LBT bandwidths 2 and 3. In other words, the UE only sends CBGs 2 to 5. CBGs 0, 1, 6, and 7 are discarded. Figure 3 Only a mapping of a selected number of LBT bandwidths and a selected number of CBGs is shown, but the mapping can include any number of LBT bandwidths and CBGs.

[0079] In some embodiments, the network side may use DCI and / or RRC signaling to configure (e.g., arrange, schedule, adjust, initialize, etc.) the UE to send (e.g., transmit, transfer, etc.) uplink signals on multiple LBT bandwidths. The UE may use the above method to transmit PUSCH on the first PUSCH resource after CCA succeeds. In some embodiments, the UE may transmit PUSCH on the next PUSCH resource. For PUSCH transmission, the transport block size is determined based on the available resources of the LBT bandwidth where the UE can transmit the PUSCH. That is, the available resources of the LBT bandwidth where the UE can transmit the PUSCH are used to calculate the transport block size. The UE may transmit one or more CBGs that constitute a complete transport block for PUSCH transmission.

[0080] Figure 4 A block diagram of an exemplary mapping 400 of PUSCH configurations according to some embodiments of the present disclosure is shown. Figure 4As shown, the PUSCH configured by the network side occupies 4 LBT bandwidths in the frequency domain (represented as LBT bandwidths 1, 2, 3 and 4, respectively), and the configuration signaling is RRC signaling and / or DCI. Before transmitting PUSCH 0, CCA is successful on LBT bandwidths 2 and 3. That is, PUSCH 0 is the first PUSCH after CCA succeeds. The UE can transmit PUSCH on LBT bandwidths 2 and 3. For PUSCH 0, the transmission block is determined based on the available resources of LBT bandwidths 1 to 4. The UE only sends CBG 2 to 5 for PUSCH 0. CBG 0, 1, 6 and 7 for PUSCH0 are discarded. For PUSCH 1, 2 and the next PUSCH (in Figure 4 (not shown in FIG), the transport block is determined based on the available resources of the LBT bandwidth (i.e., LBT bandwidths 2 and 3) in which the UE transmits the PUSCH. That is, for PUSCH 1, 2, and the next PUSCH (in Figure 4 (not shown in the figure), the UE transmits multiple CBGs that constitute a complete transport block. No CBG is discarded. If CCA is successful on LBT bandwidths 1, 3, and 4 before transmitting PUSCH 0. The UE transmits PUSCH on LBT bandwidths 3 and 4 because LBT bandwidths 3 and 4 are continuous in the frequency domain. For PUSCH 0, the transport block is determined based on the available resources of LBT bandwidths 1 to 4. The UE only transmits CBGs 4 to 7 for PUSCH 0. CBGs 0 to 3 for PUSCH 0 are discarded. For PUSCH 1, 2 and the next PUSCH (in Figure 4 (not shown in the figure), the transport block is determined based on the available resources of the LBT bandwidth (i.e., LBT bandwidths 3 and 4) in which the UE transmits the PUSCH. Figure 4 Only a mapping of a selected number of LBT bandwidths and a selected number of CBGs is shown, but the mapping can include any number of LBT bandwidths and CBGs.

[0081] In some embodiments, the number of CBGs configured by the network side may be equal to the number of LBT bandwidths occupied by the PUSCH resources configured by the network side. Figure 4 As shown in FIG. 1 , the PUSCH configured by the network side occupies 4 LBT bandwidths in the frequency domain, so the number of CBGs of the transport block is 4. CBGs 0 to 3 are mapped to 4 LBT bandwidth resources respectively. In some embodiments, the maximum number of CBGs configured by the network side may be equal to the number of LBT bandwidths occupied by the PUSCH resources configured by the network side. Figure 4 As shown, the PUSCH configured by the network side occupies 4 LBT bandwidths in the frequency domain, so the maximum number of CBGs of a transport block is 4. CBGs 0 to 3 are mapped to 4 LBT bandwidth resources respectively.

[0082] 4. Exemplary Embodiment: Group 2

[0083] In some embodiments, the network side may use DCI and / or RRC signaling to configure the UE to transmit PUSCH, wherein the frequency domain resources of the PUSCH may occupy multiple LBT bandwidths. In some embodiments, the UE may determine the transport block size based on one of the resources of the LBT bandwidth. That is, the UE may use the available resource size on one of the LBT bandwidths of the PUSCH to calculate the transport block size of the PUSCH. Here, the available resources refer to resources that can be used for PUSCH transmission, such as resource elements (REs) that can be used for PUSCH transmission. In some embodiments, the UE may use the available resources of the LBT bandwidth with the minimum or maximum LBT bandwidth index to calculate the PUSCH transport block size. In some embodiments, the LBT bandwidth used by the UE to calculate the PUSCH transport block size may be indicated by the network side. The PUSCH transport block size may be calculated using the available resources indicating the bandwidth. In some embodiments, when the available resource sizes in the multiple LBT bandwidths occupied by the PUSCH are different, the UE may use the available resources of the LBT bandwidth with the least or most available resources to calculate the PUSCH transport block size. In some embodiments, the UE may encode and / or modulate the transport block and map the transport block to the resources of one or more LBT bandwidths that are successfully transmitted by the CCA. In some embodiments, the UE may encode and / or modulate the transmission, and map the transmission block to resources of one or more LBT bandwidths where the UE may transmit uplink signals respectively. In some embodiments, when the transmission block is mapped to multiple LBT bandwidth resources, the transmission block is encoded and / or modulated for different LBT bandwidths respectively. In some embodiments, when the transmission block is mapped to multiple LBT bandwidth resources, all modulation symbols of the transmission block may be mapped to each LBT bandwidth resource. In some embodiments, the transmission blocks mapped to different LBT bandwidths may use the same or different redundancy versions (RVs). The RV may be configured by DCI or RRC signaling for scheduling PUSCH transmission. In some embodiments, when the transmission block uses different RVs, the DCI or RRC signaling may configure the RV used by the transmission block mapped to one of the LBT bandwidths, and the RV used by the transmission block mapped to other LBT bandwidths may be obtained from the configured RV used by the transmission block mapped to one of the LBT bandwidths. In some embodiments, the transmission block may be mapped only to the LBT bandwidth where the CCA is successful. In some embodiments, the UE transmits signals only on the LBT bandwidth where the CCA is successful. In other words, the UE cancels (eg, discards, punctures, etc.) the modulation symbol or signal on the LBT bandwidth where the CCA fails. The modulation symbol or signal mapped to the LBT bandwidth where the CCA fails is not transmitted.

[0084] Figure 5 A block diagram of an exemplary mapping 500 of PUSCH configurations according to some embodiments of the present disclosure is shown. Figure 5 As shown, the PUSCH configured by the network side occupies 4 LBT bandwidths in the frequency domain (represented as LBT bandwidths 1, 2, 3 and 4, respectively), and the configuration signaling can be RRC signaling and / or DCI. In some embodiments, CCA is successful only on LBT bandwidths 1, 2 and 3, and then the UE sends one or more PUSCHs on LBT bandwidths 1, 2 and 3. In some embodiments, the UE can use available resources within LBT bandwidth 1 or LBT bandwidth 2 or LBT bandwidth 3 or LBT bandwidth 4 to determine the transport block size. Although Figure 5 Only a mapping of a selected number of LBT bandwidths and a selected number of transport blocks (TBs) is shown, but the mapping can include any number of LBT bandwidths and TBs.

[0085] In some embodiments, the network side may indicate which LBT bandwidth to use to calculate the transport block size of the PUSCH. For example, the network side uses RRC signaling, or MAC CE, or DCI to indicate (e.g., notify, identify, etc.) that the UE uses the minimum or maximum LBT bandwidth index in the LBT bandwidth to determine the transport block size. The UE may use the available resources of LBT bandwidth 1 or LBT bandwidth 4 to calculate the transport block size.

[0086] In some embodiments, the protocol may determine which LBT bandwidth the UE uses. For example, the protocol predetermines that the UE uses the LBT bandwidth with the smallest LBT bandwidth index to determine the transport block size, i.e., the UE uses the available resources on LBT bandwidth 1 to calculate the transport block size.

[0087] In some embodiments, the protocol may determine that the UE uses the LBT bandwidth with the largest LBT bandwidth index to determine the transport block size. The UE uses the available resources on LBT bandwidth 1 to calculate the transport block size.

[0088] In some embodiments, the available resources in the PUSCH resources on LBT bandwidths 1, 2, 3, and 4 may be different. For example, the total number of available REs for PUSCH transmission in LBT bandwidth 1 may be N1, the total number of available REs for PUSCH transmission in LBT bandwidth 2 may be N2, the total number of available REs for PUSCH transmission in LBT bandwidth 3 may be N3, and the total number of available REs for PUSCH transmission in LBT bandwidth 4 may be N4, where N1>N3>N4>N2. If the network side indicates or the protocol predetermines that the UE uses the available resources in the LBT bandwidth with the least number of available resources to determine the transport block size, the UE will use the available resources of LBT bandwidth 2 to calculate the transport block size. If the network side indicates or the protocol predetermines that the UE uses the available resources in the LBT bandwidth with the greatest number of resources to determine the transport block size, the UE may use the available resources in LBT bandwidth 1 to calculate the transport block size.

[0089] In some embodiments, the UE may encode and / or modulate the transport blocks and map the transport blocks to LBT bandwidths 1, 2, 3, and 4, respectively. For example, all modulation symbols of the transport block are mapped to available resources of LBT bandwidth 1. All modulation symbols of the transport block are mapped to available resources of LBT bandwidth 2. All modulation symbols of the transport block are mapped to available resources of LBT bandwidth 3. All modulation symbols of the transport block are mapped to LBT bandwidth 4.

[0090] In some embodiments, transport blocks mapped to different LBT bandwidths may be encoded using the same RV. In some embodiments, the network side may configure the RV for the UE, and the UE will use the indicated RV for encoding. For example, the network side may configure the RV of the UE to 0, and then the TB is encoded using RV0. In some embodiments, transport blocks mapped to different LBT bandwidths may use different RVs. In some embodiments, the network side may separately configure the RVs used in the configured LBT bandwidths. For example, the network may configure RV0, RV1, RV2, and RV 3 for transport blocks mapped to LBT bandwidths 1, 2, 3, and 4, respectively, for encoding.

[0091] In some embodiments, the RV of a transport block mapped to one LBT bandwidth may be configured by the network side, and the RV of a transport block mapped to other LBT bandwidths may be determined based on the configured RV. For example, the RV sequence is 0, 3, 1, and 2. The RV sequence may be configured by the network side or may be predefined by the protocol. The network side configures the RV of the transport block mapped to LBT bandwidth 1 to 1. According to the RV sequence, the transport blocks mapped to LBT bandwidths 2, 3, and 4 are encoded using RVs of 2, 0, and 3, respectively. Accordingly, the transport block is encoded with RV1 and mapped to LBT bandwidth 1 after modulation; the transport block is encoded with RV2 and mapped to LBT bandwidth 2 after modulation; the transport block is encoded with RV0 and mapped to LBT bandwidth 3 after modulation; the transport block is encoded with RV3 and modulated to LBT bandwidth 4 after modulation.

[0092] In some embodiments, a group of PUSCHs is configured by the network via DCI and / or RRC signaling. In some embodiments, one or more PUSCHs in a group of PUSCHs carry (e.g., transmit, include, etc.) the same transport block. In some embodiments, the RV for a transport block carried by one PUSCH may be configured by the network side, and the RV for a transport block carried by other PUSCHs may be determined based on the configured RV.

[0093] In some embodiments, the transport block may be mapped to LBT bandwidth 1, and the modulation symbols may be mapped to PUSCH resources in a frequency domain first and then time domain manner. In some embodiments, the modulation symbols may first be mapped to LBT bandwidth 1 in ascending order of subcarrier index. In some embodiments, after the frequency domain resources of the first OFDM symbol are completely mapped with the modulation symbols, the remaining modulation symbols are mapped to the second OFDM symbol in the same order, and the remaining OFDM symbols may be mapped using a similar method until the mapping is complete. In some embodiments, the transport block may be mapped to LBT bandwidths 2 and 3 in the same manner as it is mapped to LBT bandwidth 1.

[0094] In some embodiments, since CCA is successful only on LBT bandwidths 1, 2, and 3, the UE only sends signals mapped to LBT bandwidths 1, 2, and 3. In some embodiments, if there is already a signal mapped to LBT bandwidth 4, the UE cancels (discards, punctures, etc.) the signal mapped to LBT bandwidth 4.

[0095] 5. Exemplary Embodiment: Group 3

[0096] In some embodiments, the network side may use DCI and / or RRC signaling to configure the UE to send uplinks on multiple LBT bandwidths, and the frequency domain resources include multiple LBT bandwidths. In some embodiments, when CCA succeeds on a portion of the LBT bandwidth, the UE does not send PUSCH (or any signal) at the beginning of the configured PUSCH resource, or sends a channel preemption signal on a portion of the LBT bandwidth resources at the beginning of the configured PUSCH resource, and the UE sends one or more PUSCHs from the next resource. In some embodiments, the time domain length at which the UE does not send PUSCH (or any signal) or sends a channel preemption signal from the configured PUSCH resource may be predefined by the protocol or configured by the network side. For example, the length may be M (M>0) time slots, M OFDM symbols, and / or M milliseconds, etc. The configuration signaling may be DCI, or MAC CE, or RRC signaling. In other words, before allocating time domain resources for sending PUSCH, the UE is not allowed to send PUSCH or is allowed to send a channel preemption signal within M time slots / OFDM symbols / milliseconds.

[0097] Figure 6 A block diagram of an exemplary mapping 600 of a PUSCH configuration according to some embodiments of the present disclosure is shown. As shown, the PUSCH configured by the network side using DCI and / or RRC signaling occupies K OFDM symbols in the time domain (e.g., one time slot or multiple time slots) and occupies 4 LBT bandwidths in the frequency domain (represented as LBT bandwidths 1, 2, 3, and 4, respectively). In some embodiments, if CCA is successful on LBT bandwidths 1, 3, and 4, then the UE can only send PUSCH on LBT bandwidths 3 and 4 because LBT bandwidths 3 and 4 are continuous in the frequency domain. Although Figure 5 Only the mapping of a selected number of LBT bandwidths and a selected number of K OFDM symbols is shown, but the mapping can include any number of LBT bandwidths and K OFDM symbols.

[0098] In some embodiments, for the first M OFDM symbols of the PUSCH resource, the UE does not send PUSCH (or any signal) or sends a channel preemption signal, where the value of M is predetermined by the protocol or configured by the network side. The configuration signaling may be DCI, or MAC CE, or RRC signaling. For example, the protocol may predefine (e.g., determine) that the length of M OFDM symbols is the same as the time for the UE to prepare for PUSCH.

[0099] In some embodiments, the M value may be related to the subcarrier space and UE capabilities. In some embodiments, the UE may send PUSCH on the next PUSCH resource. In other words, the UE sends PUSCH on the time domain resources after M symbols and the frequency domain resources of LBT bandwidth 3 and 4.

[0100] In some embodiments, the network side may use DCI and / or RRC signaling to configure the UE to send uplink signals on multiple LBT bandwidths, and its frequency domain resources may include multiple LBT bandwidths. In some embodiments, when CCA is on a portion of the LBT bandwidth, the UE does not send PUSCH (or any signal) at the beginning of the configured PUSCH resource, or sends a channel preemption signal at the beginning of the PUSCH resource, and sends PUCCH on the next PUSCH resource. In some embodiments, the PUCCH may carry at least the LBT bandwidth information where the UE can send PUSCH. In some embodiments, if the UE sends PUSCH on multiple LBT bandwidths, the PUCCH may be repeatedly sent on multiple LBT bandwidths. In some embodiments, if the time domain resources of the first PUSCH are greater than the time domain resources of the PUCCH, the PUCCH may be repeatedly sent on the time domain resources of the first PUSCH. In some embodiments, the PUCCH configuration may be configured by the network side. In some embodiments, the UE may send one or more PUSCHs on the next resource after transmitting the PUCCH.

[0101] Figure 7 A block diagram of an exemplary mapping 700 of PUSCH configurations according to some embodiments of the present disclosure is shown. As shown, the UE sends PUSCH on LBT bandwidth 3 and LBT bandwidth 4. In some embodiments, for the first M symbols, the UE does not send PUSCH (or any signal) or sends a channel preemption signal.

[0102] In some embodiments, the first PUSCH after M symbols is PUSCH 1, and the number of remaining OFDM symbols is M1, and then the UE sends PUCCH on these M1 symbols and LBT bandwidths 3 and 4. In some embodiments, the PUCCH carries at least the LBT bandwidth information of the PUSCH sent by the UE. In other words, it carries at least the information of LBT bandwidths 3 and 4, and the indication method can be a bitmap or an LBT bandwidth index. In some embodiments, the PUCCH is mapped on one LBT bandwidth and is repeatedly transmitted on LBT bandwidths 3 and 4. That is, the PUCCH can be transmitted on LBT bandwidths 3 and 4, respectively. In some embodiments, if the time domain length of the PUCCH is less than M1, the PUCCH is repeatedly transmitted on M1 OFDM symbols until there are no more resources for PUCCH transmission within PUSCH 1. In some embodiments, the UE can send one or more PUSCHs according to PUSCH resource 2 (including PUSCH 2). In some embodiments, if the time domain length of the PUCCH is greater than M1, the PUCCH is sent on the next PUSCH resource, that is, the UE sends on the PUSCH 2 resource. The UE may send the PUSCH 2 resource based on the PUSCH resource 3 (including PUSCH 3, and PUSCH 3 is not in Figure 7 ) sends one or more PUSCHs.

[0103] In some embodiments, the first PUSCH after M symbols is PUSCH 2, and the number of remaining OFDM symbols is M1, and then the UE sends PUCCH on these M1 symbols and LBT bandwidths 3 and 4. In some embodiments, if the time domain length of PUCCH is less than M1, PUCCH is repeatedly transmitted on M1 OFDM symbols. In some embodiments, the UE can select PUSCH 2 based on PUSCH resource 3 (including PUSCH 3, and PUSCH 3 is not in Figure 7 In some embodiments, if the time domain length of the PUCCH is greater than M1, the PUCCH is sent on the next PUSCH resource, that is, the UE sends one or more PUSCHs on the PUSCH3 resource (not in Figure 7 In some embodiments, the UE may transmit the PUCCH on PUSCH resource 4 (including PUSCH 4, and PUSCH 4 is not transmitted on PUSCH 4). Figure 7 ) sends one or more PUSCHs.

[0104] In some embodiments, if only one PUSCH remains after M symbols, the UE does not perform any transmission. In other words, the UE does not transmit the PUCCH and does not transmit the PUSCH (or any other signal).

[0105] Although Figure 7 Only the mapping of a selected number of LBT bandwidths and a selected number of M symbols is shown, but the mapping can include any number of LBT bandwidths and M symbols.

[0106] 6. Exemplary Embodiment: Group 4

[0107] In some embodiments, the transmission method used by the UE is configured by the network side, that is, the network side uses RRC signaling, or MAC CE, or DCI to configure the UE to use the first embodiment, the second embodiment, and / or the third embodiment for transmission.

[0108] In some embodiments, there may be a coupling relationship between the transmission method and the type of service to be transmitted by the UE (e.g., service priority, data priority, etc.). For example, the UE may use method two to transmit URLLC services, and the UE may use method one to transmit eMBB services.

[0109] In some embodiments, the coupling relationship is configured by the network side via DCI, or MAC CE, or RRC signaling. In some embodiments, the UE can obtain the transmission mode according to the transmission service type (e.g., service priority, data priority, etc.) configured by the network side and the coupling relationship. In some embodiments, the UE can obtain the transmission service type (e.g., service priority, data priority, etc.) according to the transmission method and coupling relationship configured by the network side.

[0110] In some embodiments, when the UE is configured by the network side to transmit URLLC services (for example, PUSCH is configured to transmit URLLC services using DCI and / or RRC signaling), the PUSCH transmission mode is method 2. In some embodiments, when the UE is configured by the network side to transmit eMBB services (for example, PUSCH is configured to transmit eMBB services using DCI and / or RRC signaling), the PUSCH transmission mode is method 1.

[0111] In some embodiments, when the UE is configured by the network side to transmit a service with a first priority (for example, the PUSCH is configured to transmit a service with a first priority using DCI and / or RRC signaling), the PUSCH transmission mode is method 1. In some embodiments, when the UE is configured by the network side to transmit a service with a second priority (for example, the PUSCH is configured to transmit a service with a second priority using DCI and / or RRC signaling), the PUSCH transmission mode is method 2. In some embodiments, when the UE is configured by the network side to transmit a service with a third priority (for example, the PUSCH is configured to transmit a service with a third priority using DCI and / or RRC signaling), the PUSCH transmission mode is method 3.

[0112] 7. Methods for implementing the exemplary embodiments of Groups 1 to 4

[0113] Figure 8 800 is a flowchart depicting a method for satisfying delay and reliability requirements for signal transmission for ultra-reliable low-latency communication (URLLC) from the perspective of a UE according to some embodiments of the present disclosure. Depending on the particular embodiment, additional, fewer, or different operations may be performed in the method. In some embodiments, some or all of the operations of method 800 may be performed by, for example, Figure 1 In some operations, some or all of the operations of method 800 may be performed by a wireless communication node of BS 102 in the embodiment of the present invention. Figure 1 The wireless communication device of UE 104 in the embodiment is performed. Each operation can be reordered, added, deleted or repeated.

[0114] As shown, in some embodiments, method 800 includes operation 802: receiving, by a wireless communication device, a signal indicating a plurality of resource block (RB) sets transmitting a plurality of uplink channels on an unlicensed frequency band from a wireless communication node. In some embodiments, the method includes operation 804: determining, by the wireless communication device, that one or more of the plurality of RB sets have passed a channel access procedure. In some embodiments, the method includes operation 806: transmitting, by the wireless communication device, a first uplink channel of the plurality of uplink channels to the wireless communication node.

[0115] Fig. 9 900 is a flow chart depicting a method for satisfying delay and reliability requirements for signal transmission for Ultra Reliable Low Latency Communication (URLLC) from the perspective of a BS according to some embodiments of the present disclosure. Depending on the particular embodiment, additional, fewer, or different operations may be performed in the method. In some embodiments, some or all of the operations of method 900 may be performed by, for example, Figure 1 In some operations, some or all of the operations of method 800 may be performed by a wireless communication node of BS 102 in the embodiment of the present invention. Figure 1 The wireless communication device of UE 104 is used to perform the operation. Each operation can be reordered, added, deleted or repeated.

[0116] As shown, in some embodiments, method 900 includes operation 902: transmitting, by a wireless communication node, a signal indicating a plurality of resource block (RB) sets for transmitting a plurality of uplink channels on an unlicensed band to a wireless communication device. In some embodiments, the signal causes the wireless communication device to: determine that one or more of the plurality of RB sets have passed a channel access procedure, and transmit a first uplink channel of the plurality of uplink channels to the wireless communication node. In some embodiments, the method includes operation 904: receiving, by a wireless communication node, a first uplink channel of the plurality of uplink channels from the wireless communication device.

[0117] Although various embodiments of the present solution have been described above, it should be understood that they are presented only in an exemplary and not limiting manner. Similarly, various figures may depict example architectures or configurations, which are provided so that those of ordinary skill in the art can understand the example features and functions of the present solution. However, such personnel will understand that the present solution is not limited to the example architectures or configurations shown, but may use a variety of alternative architectures and configurations to implement the present solution. In addition, as those of ordinary skill in the art will understand, one or more features of an embodiment may be combined with one or more features of another embodiment described herein. Therefore, the breadth and scope of the present disclosure should not be limited to any of the above-mentioned illustrative embodiments.

[0118] It should also be understood that any reference to an element herein using names such as "first," "second," etc. does not generally limit the number or order of those elements. Rather, these names may be used herein as a convenient means of distinguishing between two or more elements or examples of elements. Thus, a reference to a first and a second element does not mean that only two elements may be used, or that the first element must be located before the second element in some manner.

[0119] In addition, those of ordinary skill in the art will appreciate that information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, and symbols such as those referenced in the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0120] It will be further understood by those of ordinary skill in the art that any of the various schematic logic blocks, modules, processors, devices, circuits, methods, and functions described in conjunction with the aspects disclosed herein may be implemented by electronic hardware (e.g., digital implementations, analog implementations, or a combination of the two), firmware, various forms of design code or programs (e.g., computer program products) containing instructions (for convenience, may be referred to herein as "software" or "software modules"), or any combination of these technologies. In order to clearly illustrate this interchangeability of hardware, firmware, and software, various schematic components, blocks, modules, circuits, and steps have been described above generally in terms of their functions. Whether such functionality is implemented as hardware, firmware, or software, or a combination of these technologies, depends on the specific application and the design constraints imposed on the overall system. Technicians may implement the described functionality in various ways for each specific application, but such implementation decisions will not result in a departure from the scope of the present disclosure.

[0121] In addition, it will be understood by those of ordinary skill in the art that the various illustrative logic blocks, modules, devices, components, and circuits described herein may be implemented within or performed by an integrated circuit (IC), which may include: a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device, or any combination thereof. The logic blocks, modules, and circuits may further include antennas and / or transceivers to communicate with various components within a network or within a device. A general purpose processor may be a microprocessor, but alternatively, the processor may be any conventional processor, controller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a DSP core, or any other suitable configuration to perform the functions described herein.

[0122] If the function is implemented in software, the function can be stored as one or more instructions or codes on a computer-readable medium. Therefore, the steps of the method or algorithm disclosed herein can be implemented as software stored on a computer-readable medium. Computer-readable media include both computer storage media and communication media, and communication media include any media that can enable a computer program or code to be transferred from one place to another. The storage medium can be any available medium that a computer can access. By way of example and in a non-limiting manner, such a computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage devices, magnetic disk storage devices or other magnetic storage devices, or any other medium that can be used to store desired program codes in the form of instructions or data structures and can be accessed by a computer.

[0123] In this document, the term "module" as used herein refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. In addition, for the purpose of discussion, various modules are described as discrete modules; however, it is obvious to a person of ordinary skill in the art that two or more modules can be combined to form a single module that performs the associated functions according to an embodiment of the present solution.

[0124] In addition, memory or other storage devices and communication components can be adopted in the embodiment of the present solution.It should be understood that, for the sake of clarity, the above description has described the embodiment of the present solution with reference to different functional units and processors.However, it will be apparent that, without departing from the present solution, any appropriate functional distribution between different functional units, processing logic elements or domains can be used.For example, the function that is illustrated as being performed by a separate processing logic element or controller can be performed by the same processing logic element or controller.Therefore, reference to a specific functional unit is only a reference to an appropriate device for providing the described function, rather than indicating a strict logical or physical structure or organization.

[0125] Various modifications to the embodiments described in the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments shown herein, but is to be given the widest scope consistent with the novel features and principles disclosed herein, as set forth in the claims below.

Claims

1. A wireless communication method, comprising: The wireless communication device receives a signal from a wireless communication node indicating a plurality of resource block (RB) sets for transmitting a plurality of uplink channels on an unlicensed frequency band; The wireless communication device determines that one or more of the plurality of RB sets have passed a channel access procedure; as well as the wireless communication device transmitting a first uplink channel of the plurality of uplink channels to the wireless communication node, The signal further indicates: transmitting the first uplink channel using one or more RB sets that have passed the channel access procedure, The first uplink channel carries a subset of multiple code block groups (CBGs) constituting part of a first transport block (TB), the first TB having a size determined based on multiple RB sets indicated in the signal, and each subset of CBGs corresponds to a corresponding one of the one or more RB sets.

2. The wireless communication method according to claim 1, wherein: The signal includes at least one of a downlink control information (DCI) signal or a radio resource control (RRC) signaling.

3. The wireless communication method according to claim 1, further comprising: The wireless communication device encodes each subset of the CBG respectively; and The wireless communication device maps each subset of the encoded CBGs to a corresponding one of the one or more RB sets.

4. The wireless communication method according to claim 1, wherein: The signal also indicates: the wireless communication device transmitting a second subsequent uplink channel using the same set of RBs, The second subsequent uplink channel carries multiple CBGs that constitute a complete second TB, and the second TB has a size determined based on one or more RB sets that have passed the channel access process.

5. The wireless communication method according to claim 1, further comprising: The wireless communication device receives a second signal from the wireless communication node indicating a service type for transmitting the plurality of uplink channels, The wireless communication device determines a method according to a relationship between a plurality of service types and a plurality of methods, and The wireless communication device transmits a first one of the plurality of uplink channels to the wireless communication node using the method.

6. A wireless communication method, comprising: The wireless communication device receives a signal from a wireless communication node indicating a plurality of resource block (RB) sets for transmitting a plurality of uplink channels on an unlicensed frequency band; The wireless communication device determines that one or more of the plurality of RB sets have passed a channel access procedure; as well as the wireless communication device transmitting a first uplink channel of the plurality of uplink channels to the wireless communication node, The signal further indicates: transmitting the first uplink channel using one or more RB sets that have passed the channel access procedure, The first uplink channel carries one or more versions of transport blocks (TBs) respectively mapped to the one or more RB sets.

7. The wireless communication method according to claim 6, wherein: The signal includes at least one of a downlink control information (DCI) signal or a radio resource control (RRC) signaling.

8. The wireless communication method according to claim 6, further comprising: The wireless communication device determines the size of the TB according to an RB set having a largest or smallest index among the one or more RB sets.

9. The wireless communication method according to claim 6, further comprising: The wireless communication device determines the size of the TB according to an RB set having the largest or smallest amount of available resources among the one or more RB sets.

10. The wireless communication method according to claim 6, wherein: TBs with one or more versions of different redundancy versions (RVs) are mapped to one or more RB sets, where the RVs are indicated by the signal.

11. The wireless communication method according to claim 6, wherein: TBs having one or more versions with different redundancy versions (RVs) are mapped to one or more RB sets, wherein a first RV is indicated by the signal and remaining RVs are determined according to the first RV.

12. The wireless communication method according to claim 6, wherein: TBs having one or more versions of the same redundancy version (RV) are mapped to one or more RB sets, where the RV is indicated by the signal.

13. The wireless communication method according to claim 6, further comprising: The wireless communication device receives a second signal from the wireless communication node indicating a service type for transmitting the plurality of uplink channels, The wireless communication device determines a method according to a relationship between a plurality of service types and a plurality of methods, and The wireless communication device transmits a first one of the plurality of uplink channels to the wireless communication node using the method.

14. A wireless communication method, comprising: The wireless communication device receives a signal from a wireless communication node indicating a plurality of resource block (RB) sets for transmitting a plurality of uplink channels on an unlicensed frequency band; The wireless communication device determines that one or more of the plurality of RB sets have passed a channel access procedure; as well as the wireless communication device transmitting a first uplink channel of the plurality of uplink channels to the wireless communication node, The signal further indicates: excluding transmission of the first uplink channel along a first number of symbols in the time domain; and After the first number of symbols, the first uplink channel is transmitted using one or more RB sets that have passed the channel access procedure.

15. The wireless communication method according to claim 14, wherein: The signal includes at least one of a downlink control information (DCI) signal or a radio resource control (RRC) signaling.

16. The wireless communication method according to claim 14, wherein: The signal also indicates: transmitting an uplink control channel using the one or more RB sets after the first number of symbols and before transmitting the first uplink channel, The uplink control channel carries information of the one or more RB sets.

17. The wireless communication method according to claim 14, further comprising: The wireless communication device receives a second signal from the wireless communication node indicating a service type for transmitting the plurality of uplink channels, The wireless communication device determines a method according to a relationship between a plurality of service types and a plurality of methods, and The wireless communication device transmits a first one of the plurality of uplink channels to the wireless communication node using the method.

18. A wireless communication method, comprising: The wireless communication node transmits a signal to the wireless communication device indicating a plurality of resource block (RB) sets for transmitting a plurality of uplink channels in an unlicensed frequency band, wherein the signal causes the wireless communication device to: determine that one or more of the plurality of RB sets have passed the channel access process, and transmit a first uplink channel of the plurality of uplink channels to the wireless communication node; and The wireless communication node receives a first uplink channel of the plurality of uplink channels from the wireless communication device, The signal further causes the wireless communication device to: transmit the first uplink channel using one or more RB sets that have passed the channel access procedure; The first uplink channel carries a subset of multiple code block groups (CBGs) constituting part of a first transport block (TB), the first TB having a size determined based on multiple RB sets indicated in the signal, and each subset of CBGs corresponds to a corresponding one of the one or more RB sets.

19. The wireless communication method according to claim 18, wherein: The signal includes at least one of a downlink control information (DCI) signal or a radio resource control (RRC) signaling.

20. The wireless communication method according to claim 18, wherein: The signal also causes the wireless communication device to: encode each subset of the CBG respectively, and map each encoded subset of the CBG to a corresponding one of the one or more RB sets.

21. The wireless communication method according to claim 18, wherein: The signal further causes the wireless communication device to: transmit a second subsequent uplink channel using the same set of RBs, The second subsequent uplink channel carries multiple CBGs that constitute a complete second TB, and the second TB has a size determined based on one or more RB sets that have passed the channel access process.

22. The wireless communication method according to claim 18, further comprising: the wireless communication node transmitting, to the wireless communication device, a second signal indicating a service type for transmitting the plurality of uplink channels, wherein the second signal causes the wireless communication device to: determine a method according to a relationship between a plurality of service types and a plurality of methods, and transmit the first of the plurality of uplink channels to the wireless communication node using the method; and The wireless communication node receives a first of the plurality of uplink channels from the wireless communication device using the method.

23. A wireless communication method, comprising: The wireless communication node transmits a signal to the wireless communication device indicating a plurality of resource block (RB) sets for transmitting a plurality of uplink channels in an unlicensed frequency band, wherein the signal causes the wireless communication device to: determine that one or more of the plurality of RB sets have passed the channel access process, and transmit a first uplink channel of the plurality of uplink channels to the wireless communication node; and The wireless communication node receives a first uplink channel of the plurality of uplink channels from the wireless communication device, The signal further causes the wireless communication device to: transmit the first uplink channel using one or more RB sets that have passed the channel access process; The first uplink channel carries one or more versions of transport blocks (TBs) respectively mapped to the one or more RB sets.

24. The wireless communication method according to claim 23, wherein: The signal includes at least one of a downlink control information (DCI) signal or a radio resource control (RRC) signaling.

25. The wireless communication method according to claim 23, wherein: The signal further causes the wireless communication device to determine a size of a TB according to an RB set having a largest or smallest index among the one or more RB sets.

26. The wireless communication method according to claim 23, wherein: The signal further causes the wireless communication device to determine the size of the TB according to an RB set having the largest or smallest amount of available resources among the one or more RB sets.

27. The wireless communication method according to claim 23, wherein: TBs with one or more versions of different redundancy versions (RVs) are mapped to one or more RB sets, where the RVs are indicated by the signal.

28. The wireless communication method according to claim 23, wherein: TBs having one or more versions with different redundancy versions (RVs) are mapped to one or more RB sets, wherein a first RV is indicated by the signal and remaining RVs are determined according to the first RV.

29. The wireless communication method according to claim 23, wherein: TBs having one or more versions of the same redundancy version (RV) are mapped to one or more RB sets, where the RV is indicated by the signal.

30. The wireless communication method according to claim 23, further comprising: the wireless communication node transmitting, to the wireless communication device, a second signal indicating a service type for transmitting the plurality of uplink channels, wherein the second signal causes the wireless communication device to: determine a method according to a relationship between a plurality of service types and a plurality of methods, and transmit the first of the plurality of uplink channels to the wireless communication node using the method; and The wireless communication node receives a first of the plurality of uplink channels from the wireless communication device using the method.

31. A wireless communication method, comprising: The wireless communication node transmits a signal to the wireless communication device indicating a plurality of resource block (RB) sets for transmitting a plurality of uplink channels in an unlicensed frequency band, wherein the signal causes the wireless communication device to: determine that one or more of the plurality of RB sets have passed the channel access process, and transmit a first uplink channel of the plurality of uplink channels to the wireless communication node; and The wireless communication node receives a first uplink channel of the plurality of uplink channels from the wireless communication device, The signal further causes the wireless communication device to exclude transmission of the first uplink channel along a first number of symbols in the time domain, and after the first number of symbols, transmit the first uplink channel using one or more RB sets that have passed the channel access process.

32. The wireless communication method according to claim 31, wherein: The signal includes at least one of a downlink control information (DCI) signal or a radio resource control (RRC) signaling.

33. The wireless communication method according to claim 31, wherein: The signal further causes the wireless communication device to: transmit an uplink control channel using the one or more RB sets after the first quantity symbol and before transmitting the first uplink channel, The uplink control channel carries information of the one or more RB sets.

34. The wireless communication method according to claim 31, further comprising: the wireless communication node transmitting, to the wireless communication device, a second signal indicating a service type for transmitting the plurality of uplink channels, wherein the second signal causes the wireless communication device to: determine a method according to a relationship between a plurality of service types and a plurality of methods, and transmit the first of the plurality of uplink channels to the wireless communication node using the method; and The wireless communication node receives a first of the plurality of uplink channels from the wireless communication device using the method.

35. A wireless communication device, comprising a processor and a memory, wherein: The processor is configured to read code from the memory and implement the method according to any one of claims 1 to 34.

36. A computer program product comprising computer readable program medium code stored thereon which, when executed by a processor, causes the processor to implement the method according to any one of claims 1 to 34.

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