Method and apparatus for uplink transmission using configuration license in unlicensed spectrum

Abstract

Various aspects of the present application can flexibly configure channel access opportunities for uplink transmission within the configured authorized transmission resource duration. The uplink transmission can be sent in a physical uplink shared channel (PUSCH). The configured authorized transmission resource duration includes multiple orthogonal frequency division multiplexed (OFDM) symbols. In some implementations, resources for uplink transmission are allocated so that the time slot can accommodate an integer number of mini-slots of equal size, and each mini-slot is regarded as a separate PUSCH. The above situation occurs when the number of OFDM symbols in the time slot is divisible by the number of OFDM symbols in the mini-slot. In some embodiments, not all mini-slots in the time slot are of equal size. The above situation occurs when the number of OFDM symbols in the time slot is not divisible by a certain mini-slot size.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefit of priority to U.S. Provisional Patent Application No. 62 / 865,137, filed on June 21, 2019, entitled “Physical Uplink Shared Channel Enhancements for Transmission With Configured Grant in Unlicensed Spectrum,” and U.S. Patent Application No. 16 / 905,497, filed on June 18, 2020, entitled “Physical Uplink Shared Channel Enhancements for Transmission With Configured Grant in Unlicensed Spectrum,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to wireless communications, and in a particular embodiment, to configured grant (CG) uplink transmissions in unlicensed spectrum. Background Art

[0004] In a wireless communication system, electronic devices (EDs) such as user equipment (UE) communicate wirelessly with transmission and receive points (TRPs) called base stations, and can send data to and / or receive data from EDs. Wireless communication from EDs to base stations is called uplink communication. Wireless communication from base stations to EDs is called downlink communication.

[0005] Resources are required to perform uplink and downlink communications. For example, an ED may wirelessly send data to a base station in an uplink transmission at a specific frequency and in a specific time slot. The frequency and time slot used are examples of physical communication resources.

[0006] In LTE grant-based transmission, the required transmission control parameters are usually transmitted via the Physical Uplink Control Channel (PUCCH) and the Physical Downlink Control Channel (PDCCH). The information payload sent by the ED can then be sent in the physical uplink shared channel (PUSCH). The base station knows the identity of the ED that uses the granted uplink resources to send uplink transmissions because the base station specifically grants these uplink resources to the ED. In configured grant transmission, different EDs can use the uplink resources shared by these EDs to send uplink transmissions without specifically requesting the use of these resources or requiring the base station to specifically dynamically grant these resources. One advantage of configured grant transmission is low latency because it is not necessary to request and receive dynamic grants of allocated time or frequency resources from the base station. In addition, in configured grant transmission, scheduling overhead can be reduced. However, the base station does not know which ED (if any) is sending a configured grant uplink transmission at a certain moment, which may require blind detection of the configured grant transmission received on the base station side. In other words, the base station is required to determine which ED is transmitting. Therefore, the BS can use a combination of uplink reference symbols (RS) and occupied time-frequency resources to identify the configuration grant ED and the transport block being received from the configuration grant ED.

[0007] Some communication modes can achieve communication with ED through unlicensed spectrum segments or different spectrum segments (e.g., unlicensed spectrum segments and / or licensed spectrum segments) of wireless networks. Considering the scarcity and high cost of bandwidth in licensed spectrum, the method of using large and free unlicensed spectrum to offload at least some communication services has attracted the interest of mobile broadband (MBB) network operators. For example, in some cases, uplink transmissions can be sent through unlicensed spectrum segments. Therefore, an efficient and reasonable mechanism for configuring authorized uplink transmissions in unlicensed spectrum may be needed. Summary of the invention

[0008] In the first aspect of the present application, a method for user equipment (UE) to perform uplink transmission using a configured grant (CG) in an unlicensed spectrum is provided. The method includes: the UE receives CG resource configuration information including time domain resource configuration information from a network device to configure the UE to perform multiple CG continuous physical uplink shared channels (PUSCH) allocations within a time slot of a CG time resource, wherein the time domain resource configuration information includes a start symbol of a first PUSCH allocation within a time slot of the CG time resource and an indication of a fixed length; wherein the time domain resource configuration information defines multiple access opportunities for the UE to start CG uplink transmission within the CG time resource, and each access opportunity starts from the start symbol of the corresponding PUSCH of the multiple CG continuous PUSCH allocations. The method also includes: starting the CG uplink transmission at a first access opportunity, wherein a listen-before-talk (LBT) channel access process succeeds before the first access opportunity; and sending CG continuous PUSCHs at the remaining access opportunities according to the CG continuous PUSCH allocations.

[0009] Optionally, in any of the above embodiments, the UE is configured with K repetitions greater than 1, and the UE repeats transmission blocks (TBs) in K earliest consecutive transmission opportunity candidates within the same configuration.

[0010] Optionally, in any of the above embodiments, for multiple CG continuous PUSCH allocations within a time slot, the first PUSCH allocation follows the configured start and length indicator value (SLIV) parameters, and the remaining PUSCH allocations have the same length and PUSCH mapping type and are attached to the previous allocation without gaps.

[0011] Optionally, in any of the above embodiments, the same combination of starting symbol, length and PUSCH mapping type is repeated on consecutively allocated time slots.

[0012] Optionally, in any of the above embodiments, the method further includes configuring multiple PUSCH allocations in the CG time resource based on the fixed length of the first PUSCH allocation and the number of multiple orthogonal frequency division multiplexing (OFDM) symbols available for CG uplink transmission in the first time slot of the CG time resource.

[0013] Optionally, in any of the above embodiments, configuring multiple PUSCH allocations includes at least one of the following steps: configuring at least one PUSCH allocation equal to the fixed length of the first PUSCH allocation; configuring at least one PUSCH allocation equal to the fixed length of the first PUSCH allocation and a PUSCH allocation smaller than the fixed length of the first PUSCH allocation; configuring at least one PUSCH allocation equal to the fixed length of the first PUSCH allocation and a PUSCH allocation larger than the fixed length of the first PUSCH allocation.

[0014] Optionally, in any of the above embodiments, the UE receiving the CG resource configuration information from the network device includes receiving the CG resource configuration information in the following content: a radio resource control (RRC) message, or a combination of an RRC message and downlink control information (DCI).

[0015] In the second aspect of the present application, a UE is provided. The UE includes a processor and a computer-readable medium. The computer-readable medium stores computer-executable instructions, and when the processor executes the computer-executable instructions, the UE: receives CG resource configuration information including time domain resource configuration information from a network device to configure the UE to perform multiple CG continuous PUSCH allocations within the time slot of the CG time resource, wherein the time domain resource configuration information includes a start symbol of the first PUSCH allocation within the time slot of the CG time resource and an indication of a fixed length; wherein the time domain resource configuration information defines multiple access opportunities for the UE to start CG uplink transmission within the CG time resource, and each access opportunity starts from the start symbol of the corresponding PUSCH of the multiple CG continuous PUSCH allocations; starts the CG uplink transmission at the first access opportunity, wherein the LBT channel access process succeeds before the first access opportunity; and sends CG continuous PUSCH at the remaining access opportunities according to the CG continuous PUSCH allocation.

[0016] Optionally, in any of the above embodiments, the UE is configured with K repetitions greater than 1, and the UE repeats TB in K earliest consecutive transmission opportunity candidates within the same configuration.

[0017] Optionally, in any of the above embodiments, for multiple CG continuous PUSCH allocations within a time slot, the first PUSCH allocation follows the configured SLIV parameters, and the remaining PUSCH allocations have the same length and PUSCH mapping type and are appended to the previous allocation without gaps.

[0018] Optionally, in any of the above embodiments, the same combination of starting symbol, length and PUSCH mapping type is repeated on consecutively allocated time slots.

[0019] Optionally, in any of the above embodiments, when the processor executes the computer-executable instructions, it also enables the UE to: configure multiple PUSCH allocations in the CG time resource based on the fixed length of the first PUSCH allocation and the number of multiple OFDM symbols available for CG uplink transmission in the first time slot of the CG time resource.

[0020] Optionally, in any of the above embodiments, configuring multiple PUSCH allocations includes at least one of the following steps: configuring at least one PUSCH allocation equal to the fixed length of the first PUSCH allocation; configuring at least one PUSCH allocation equal to the fixed length of the first PUSCH allocation and a PUSCH allocation smaller than the fixed length of the first PUSCH allocation; configuring at least one PUSCH allocation equal to the fixed length of the first PUSCH allocation and a PUSCH allocation larger than the fixed length of the first PUSCH allocation.

[0021] Optionally, in any of the above embodiments, receiving the CG resource configuration information includes receiving the CG resource configuration information in the following content: RRC message, or a combination of RRC message and DCI.

[0022] In the third aspect of the present application, a method for use in a network device is provided. The method comprises: the network device sends CG resource configuration information including time domain resource configuration information to a UE to configure the UE to perform multiple CG continuous PUSCH allocations within a time slot of a CG time resource, wherein the time domain resource configuration information comprises a start symbol of a first PUSCH allocation within a time slot of the CG time resource and an indication of a fixed length; wherein the time domain resource configuration information defines multiple access opportunities for the UE to start CG uplink transmission within the CG time resource, and each access opportunity starts from the start symbol of the corresponding PUSCH of the multiple CG continuous PUSCH allocations. The method also comprises: receiving the CG uplink transmission at a first access opportunity, wherein an LBT channel access procedure succeeds before the first access opportunity; and receiving CG continuous PUSCH at the remaining access opportunities according to the CG continuous PUSCH allocation.

[0023] Optionally, in any of the above embodiments, the CG resource configuration information used to configure the UE includes K repetitions greater than 1, so that the UE repeats TB among K earliest consecutive transmission opportunity candidates within the same configuration.

[0024] Optionally, in any of the above embodiments, for multiple CG continuous PUSCH allocations within a time slot, the first PUSCH allocation follows the configured SLIV parameters, and the remaining PUSCH allocations have the same length and PUSCH mapping type and are appended to the previous allocation without gaps.

[0025] Optionally, in any of the above embodiments, the same combination of starting symbol, length and PUSCH mapping type is repeated on consecutively allocated time slots.

[0026] Optionally, in any of the above embodiments, the CG resource configuration information used to configure the UE includes information for configuring multiple PUSCH allocations in the CG time resource based on the fixed length of the first PUSCH allocation and the number of multiple OFDM symbols available for CG uplink transmission in the first time slot of the CG time resource.

[0027] Optionally, in any of the above embodiments, the CG resource configuration information used to configure the UE includes information for configuring the multiple PUSCH allocations through at least one of the following steps: configuring at least one PUSCH allocation equal to the fixed length of the first PUSCH allocation; configuring at least one PUSCH allocation equal to the fixed length of the first PUSCH allocation and a PUSCH allocation smaller than the fixed length of the first PUSCH allocation; configuring at least one PUSCH allocation equal to the fixed length of the first PUSCH allocation and a PUSCH allocation larger than the fixed length of the first PUSCH allocation.

[0028] Optionally, in any of the above embodiments, the network device sending the CG resource configuration information to the UE includes sending the CG resource configuration information in the following content: an RRC message, or a combination of an RRC message and a DCI.

[0029] In the fourth aspect of the present application, a network device is provided. The network device includes a processor and a computer-readable medium. The computer-readable medium stores computer-executable instructions, and when the processor executes the computer-executable instructions, the network device: sends CG resource configuration information including time domain resource configuration information to the UE to configure the UE to perform multiple CG continuous PUSCH allocations within the time slot of the CG time resource, wherein the time domain resource configuration information includes a start symbol of the first PUSCH allocation within the time slot of the CG time resource and an indication of a fixed length; wherein the time domain resource configuration information defines multiple access opportunities for the UE to start CG uplink transmission within the CG time resource, and each access opportunity starts from the start symbol of the corresponding PUSCH of the multiple CG continuous PUSCH allocations; receives the CG uplink transmission at the first access opportunity, wherein the LBT channel access process succeeds before the first access opportunity; and receives the CG continuous PUSCH at the remaining access opportunities according to the CG continuous PUSCH allocation.

[0030] Optionally, in any of the above embodiments, the CG resource configuration information used to configure the UE includes K repetitions greater than 1, so that the UE repeats TB among K earliest consecutive transmission opportunity candidates within the same configuration.

[0031] Optionally, in any of the above embodiments, for multiple CG continuous PUSCH allocations within a time slot, the first PUSCH allocation follows the configured SLIV parameters, and the remaining PUSCH allocations have the same length and PUSCH mapping type and are appended to the previous allocation without gaps.

[0032] Optionally, in any of the above embodiments, the same combination of starting symbol, length and PUSCH mapping type is repeated on consecutively allocated time slots.

[0033] Optionally, in any of the above embodiments, the CG resource configuration information used to configure the UE includes information for configuring multiple PUSCH allocations in the CG time resource based on the fixed length of the first PUSCH allocation and the number of multiple OFDM symbols available for CG uplink transmission in the first time slot of the CG time resource.

[0034] Optionally, in any of the above embodiments, the CG resource configuration information used to configure the UE includes information for configuring the multiple PUSCH allocations through at least one of the following steps: configuring at least one PUSCH allocation equal to the fixed length of the first PUSCH allocation; configuring at least one PUSCH allocation equal to the fixed length of the first PUSCH allocation and a PUSCH allocation smaller than the fixed length of the first PUSCH allocation; configuring at least one PUSCH allocation equal to the fixed length of the first PUSCH allocation and a PUSCH allocation larger than the fixed length of the first PUSCH allocation.

[0035] Optionally, in any of the above embodiments, sending the CG resource configuration information to the UE includes sending the CG resource configuration information in the following content: an RRC message, or a combination of an RRC message and a DCI. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The embodiments of the present disclosure are described in further detail with reference to the accompanying drawings.

[0037] Figure 1 A schematic diagram of the communication system.

[0038] Figure 2A and Figure 2B are block diagrams of exemplary EDs and base stations, respectively.

[0039] Figure 3A , Figure 3B , Figure 3C and Figure 3D An exemplary representation of configured grant (CG) resource allocation and transmission provided for the first embodiment of the present application.

[0040] Figure 4A , Figure 4B , Figure 4C and Figure 4D An exemplary representation of CG resource allocation and transmission provided for the second embodiment of the present application.

[0041] Figure 5A , Figure 5B , Figure 5C , Figure 5D and Figure 5E An exemplary representation of CG resource allocation and transmission provided for the third embodiment of the present application.

[0042] Fig. 6A and Figure 6B An exemplary representation of CG resource allocation and transmission provided for the fourth embodiment of the present application.

[0043] Figure 7An exemplary representation of CG resource allocation and transmission provided for the fifth embodiment of the present application.

[0044] Figure 8 A flowchart of exemplary operations in a user equipment (UE) provided for one embodiment of the present disclosure.

[0045] Fig. 9 A flowchart of exemplary operations in a network device provided for one embodiment of the present disclosure. DETAILED DESCRIPTION

[0046] For illustrative purposes, specific exemplary embodiments will now be explained in greater detail with reference to the accompanying drawings.

[0047] The embodiments presented herein represent information sufficient to practice the subject matter claimed for protection and illustrate methods of practicing such subject matter. After reading the following description in light of the accompanying drawings, those skilled in the art will understand the concepts of the subject matter claimed for protection and will recognize applications of these concepts not specifically addressed herein. It should be understood that these concepts and applications fall within the scope of the present invention and the appended claims.

[0048] In addition, it should be understood that any module, component, or device disclosed herein for executing instructions may include or access one or more non-transitory computer / processor readable storage media to store information, such as computer / processor readable instructions, data structures, program modules, and / or other data. A non-exhaustive list of examples of non-transitory computer / processor readable storage media includes magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, compact disc read-only memory (CD-ROM), digital video discs or digital versatile discs (i.e., DVDs), Blu-ray discs, and other optical disks. TM The invention relates to optical disks, or other optical storage, volatile and non-volatile, removable and non-removable media implemented in any method or technology, random-access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other storage technology. Any of these non-transitory computer / processor storage media can be part of a device or can be accessed or connected to such a device. Computer / processor readable / executable instructions used to implement the applications or modules described herein can be stored or otherwise saved by these non-transitory computer / processor readable storage media.

[0049] Various aspects of the present disclosure provide a configured grant transmission mode for uplink transmission in unlicensed spectrum in a wireless network. In the present disclosure, a configured grant transmission refers to a transmission performed without sending a dynamic resource grant for the transmission. The configured grant uplink transmission may be a burst transmission. The above transmission may include, but is not limited to, one or more physical uplink shared channels (PUSCH), uplink control information (UCI) in the PUSCH, or a demodulation reference signal (DM-RS).

[0050] Some specific exemplary embodiments are described below with reference to the accompanying drawings.

[0051] Communication System

[0052] Figure 1 An exemplary communication system 100 in which embodiments of the present application can be implemented is shown. In general, the communication system 100 enables multiple wireless or wired elements to transmit data and other content. The purpose of the communication system 100 can be to provide content (voice, data, video, text) through broadcast, multicast, unicast, user device to user device, etc. The communication system 100 can operate by sharing resources such as bandwidth.

[0053] In this example, the communication system 100 includes electronic devices (ED) 110a to 110c, radio access networks (RAN) 120a and 120b, a core network 130, a public switched telephone network (PSTN) 140, the Internet 150, and other networks 160. Figure 1 A certain number of components or elements are shown, but any reasonable number of such components or elements may be included in the communication system 100 .

[0054] EDs 110a to 110c are used to operate and / or communicate in the communication system 100. For example, EDs 110a to 110c are used to transmit and / or receive via wireless or wired communication channels. EDs 110a to 110c each represent any end-user device suitable for wireless operation, and may include (or may be referred to as): user equipment (UE / user device), wireless transmit / receive unit (WTRU), mobile station, fixed or mobile subscriber unit, cellular phone, station (STA), machine type communication (MTC) device, personal digital assistant (PDA), smart phone, laptop, computer, tablet, wireless sensor or consumer electronic device.

[0055] exist Figure 1 In the embodiment, RAN 120a and 120b include base stations 170a and 170b, respectively. Base stations 170a and 170b are used to wirelessly connect to one or more of EDs 110a to 110c so as to access any other base stations 170a and 170b, core network 130, PSTN 140, Internet 150 and / or other networks 160. For example, base stations 170a and 170b may include (or may be) one or more of several well-known devices, such as base transceiver station (BTS), Node-B (NodeB), evolved NodeB (eNodeB), Home eNodeB, gNodeB, transmission and receive point (TRP), site controller, access point (AP) or wireless router. Any ED 110a to 110c may be connected, accessed, or communicated with any other base stations 170a and 170b, the Internet 150, the core network 130, the PSTN 140, other networks 160, or any combination thereof. The communication system 100 may include a RAN, such as the RAN 120b, wherein the corresponding base station 170b accesses the core network 130 directly or through the Internet 150.

[0056] EDs 110a to 110c and base stations 170a and 170b are examples of communication devices that may be used to implement some or all of the functions and / or embodiments described herein. Figure 1In the illustrated embodiment, base station 170a forms part of RAN 120a, which may include other base stations, one or more base station controllers (BSC), one or more radio network controllers (RNC), relay nodes, elements and / or devices. Any base station 170a, 170b may be a single element, as shown, or multiple elements distributed in the corresponding RAN, and so on. Similarly, base station 170b forms part of RAN 120b, which may include other base stations, elements and / or devices. Base stations 170a and 170b both send and / or receive wireless signals within a certain geographic area (region / area) (sometimes referred to as a "cell" or "coverage area"). The cell may be further divided into cell sectors, and base stations 170a and 170b may, for example, use multiple transceivers to provide services to multiple sectors. In some embodiments, there may be established pico or femto cells, where the radio access technology supports these cells. In some embodiments, multiple transceivers may be used for each cell, for example, by using multiple-input multiple-output (MIMO) technology. The number of RANs 120a and 120b shown is exemplary only. Any number of RANs may be considered when designing the communication system 100.

[0057] Base stations 170a and 170b communicate with one or more of EDs 110a to 110c via one or more air interfaces 190 using wireless communication links such as radio frequency (RF), microwave, infrared (IR), etc. The air interface 190 may utilize any suitable wireless access technology. For example, the communication system 100 may implement one or more orthogonal or non-orthogonal channel access methods in the air interface 190, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or single-carrier FDMA (SC-FDMA).

[0058] The base stations 170a and 170b may implement Universal Mobile Telecommunication System (UMTS) Universal Terrestrial Radio Access (UTRA) to establish the air interface 190 using wideband CDMA (WCDMA). In this case, the base stations 170a and 170b may implement protocols such as High Speed ​​Packet Access (HSPA), Evolved HPSA (HSPA+), etc., wherein HSPA+ may optionally include High Speed ​​Downlink Packet Access (HSDPA) and / or High Speed ​​Uplink Packet Access (HSUPA). Optionally, the base stations 170a and 170b may use LTE, LTE-A and / or LTE-B to establish the air interface 190 with Evolved UTMS Terrestrial Radio Access (E-UTRA). It is considered that the communication system 100 may use multi-channel access functions, including those described above. Other wireless technologies used to implement the air interface include IEEE 802.11, 802.15, 802.16, CDMA2000, CDMA2000 IX, CDMA2000 EV-DO, IS-2000, IS-95, IS-856, GSM, EDGE, and GERAN. Of course, other multiple access schemes and wireless protocols may be used.

[0059] The RANs 120a and 120b are in communication with the core network 130 to provide various services, such as voice, data, and other services to the EDs 110a to 110c. The RANs 120a and 120b and / or the core network 130 may communicate directly or indirectly with one or more other RANs (not shown), which may or may not be directly served by the core network 130 and may or may not employ the same radio access technology as the RANs 120a and / or RANs 120b. The core network 130 may also serve as a gateway access between (i) the RANs 120-120b and / or the EDs 110a-110c and (ii) other networks, such as the PSTN 140, the Internet 150, and other networks 160.

[0060] EDs 110a to 110c may also communicate with each other via one or more SL air interfaces using wireless communication links such as radio frequency (RF), microwave, infrared (IR), etc. The sidelink configuration authorization resources may be determined by the base station, or may be selected from a configuration resource pool by the UE initiating channel occupancy.

[0061] In addition, some or all of the EDs 110a to 110c may include functionality to communicate with different wireless networks over different wireless links using different wireless technologies and / or protocols. The EDs may communicate with a service provider or switch (not shown) and with the Internet 150 over a wired communication channel, rather than wirelessly (or in addition to wirelessly). The PSTN 140 may include a line-switched telephone network for providing plain old telephone service (POTS). The Internet 150 may include computer networks and / or subnets (intranets) and include protocols such as the Internet Protocol (IP), the Transmission Control Protocol (TCP), and the User Datagram Protocol (UDP). The EDs 110a to 110c may be multi-mode devices capable of operating according to a variety of wireless access technologies and include multiple transceivers required to support these technologies.

[0062] Figure 2A and Figure 2B Exemplary devices that can implement the various methods and teachings provided by the present disclosure are shown. Specifically, Figure 2A An exemplary ED 110 is shown, Figure 2B An exemplary base station 170 is shown. These components may be used in the communication system 100 or any other suitable system.

[0063] like Figure 2A As shown, ED 110 includes at least one processing unit 200. Processing unit 200 implements various processing operations of ED 110. For example, processing unit 200 can perform signal encoding, data processing, power control, input / output processing, or any other function that enables ED 110 to operate in communication system 100. Processing unit 200 can also be used to implement some or all of the functions and / or embodiments detailed above. Each processing unit 200 includes any suitable processing or computing device for performing one or more operations. Each processing unit 200 can include a microprocessor, a microcontroller, a digital signal processor, a field programmable gate array, or an application-specific integrated circuit, etc.

[0064] ED 110 also includes at least one transceiver 202. Transceiver 202 is used to modulate data or other content for transmission by at least one antenna or network interface controller (NIC) 204. Transceiver 202 is also used to demodulate data or other content received by at least one antenna 204. Each transceiver 202 includes any suitable structure for generating signals for wireless or wired transmission and / or for processing signals received by wireless or wired means. Each antenna 204 includes any suitable structure for sending and / or receiving wireless or wired signals. One or more transceivers 202 can be used in ED 110. One or more antennas 204 can be used in ED 110. Although transceiver 202 is shown as a separate functional unit, it can also be implemented using at least one transmitter and at least one separate receiver.

[0065] ED 110 also includes one or more input / output devices 206 or interfaces (e.g., a wired interface connected to the Internet 150). Input / output devices 206 can interact with users or other devices in the network. Each input / output device 206 includes any suitable structure for providing information to a user or receiving information from a user (including network interface communications), such as a speaker, microphone, keypad, keyboard, display, or touch screen.

[0066] In addition, the ED 110 includes at least one memory 208. The memory 208 stores instructions and data used, generated, or collected by the ED 110. For example, the memory 208 may store software instructions or modules for implementing some or all of the functions and / or embodiments described above and executed by one or more processing units 200. Each memory 208 includes any suitable one or more volatile and / or non-volatile storage and retrieval devices. Any suitable type of memory may be used, such as a random access memory (RAM), a read only memory (ROM), a hard disk, an optical disk, a subscriber identity module (SIM) card, a memory stick, a secure digital (SD) memory card, etc.

[0067] like Figure 2BAs shown, the base station 170 includes at least one processing unit 250, at least one transmitter 252, at least one receiver 254, one or more antennas 256, at least one memory 258 and one or more input / output devices or interfaces 266. Transceivers not shown can be used instead of transmitters 252 and receivers 254. Scheduler 253 can be connected to the processing unit 250. Scheduler 253 can be included in the base station 170, or can be operated separately from the base station 170. The processing unit 250 implements various processing operations of the base station 170, such as signal encoding, data processing, power control, input / output processing or any other function. The processing unit 250 can also be used to implement some or all of the functions and / or embodiments described in detail above. Each processing unit 250 includes any suitable processing or computing device for performing one or more operations. Each processing unit 250 can include a microprocessor, a microcontroller, a digital signal processor, a field programmable gate array or an application-specific integrated circuit, etc.

[0068] Each transmitter 252 includes any suitable structure for generating signals for wireless or wired transmission with one or more EDs or other devices. Each receiver 254 includes any suitable structure for processing signals received wirelessly or wired from one or more EDs or other devices. Although at least one transmitter 252 and at least one receiver 254 are shown as separate components, they can be combined into a transceiver. Each antenna 256 includes any suitable structure for sending and / or receiving wireless or wired signals. Although the shared antenna 256 is shown here as connected to the transmitter 252 and the receiver 254, one or more antennas 256 can be connected to one or more transmitters 252, and one or more separate antennas 256 can be connected to one or more receivers 254. Each memory 258 includes any suitable one or more volatile and / or non-volatile storage and retrieval devices, such as those described above in conjunction with ED 110. The memory 258 stores instructions and data used, generated or collected by the base station 170. For example, the memory 258 can store software instructions or modules for implementing some or all of the above functions and / or embodiments and executed by one or more processing units 250.

[0069] Each input / output device 266 can interact with users or other devices in the network. Each input / output device 266 includes any suitable structure for providing information to a user or receiving information from a user / providing information from a user (including network interface communications).

[0070] Configured grant transmission

[0071] Base station 170 is used to support wireless communication with ED 110, and each ED 110 can send configuration authorization uplink transmission. Uplink transmission from ED 110 is performed in a set of time-frequency resources. Configuration authorization uplink transmission is sent using uplink resources without the need for base station 170 to dynamically allocate resources to the request / grant mechanism. By performing configuration authorization transmission, total network overhead resources can be saved. In addition, time can be saved by bypassing the request / grant process. An ED that sends a configuration authorization uplink transmission or is used to send a configuration authorization uplink transmission can be referred to as operating in a configuration authorization mode. Configuration authorization uplink transmission is sometimes referred to as "grant-free", "grant-less", "schedule free" or "schedule-less" transmission. Configuration authorization uplink transmissions from different EDs can be sent using a shared designated resource unit, in which case the configuration authorization uplink transmission is a contention-based transmission. One or more base stations 170 can perform blind detection of configuration authorization uplink transmissions.

[0072] In a wireless network according to one embodiment, any ED may be configured for grant-based transmission or configuration grant transmission based on application and device type and requirements, etc. Typically, configuration grant transmission may include resource configuration or resource pre-configuration when the ED connection is established, and have resource reconfiguration or update during operation. In some embodiments, configuration grant resources may be configured to the ED via UE-specific signaling or broadcast or multicast signaling in some scenarios. Two or more configuration grant transmissions may share the same configuration resources. In addition, in some embodiments, grant-based transmissions may use dedicated resources, or may share (all or part) resources with configuration grant resources within a time interval.

[0073] Depending on the relevant application requirements and quality of service (QoS), both configuration authorization transmission and authorization-based transmission can be used for any application service or service type. By way of a non-limiting example, configuration authorization transmission can be used for: ultra-reliable low latency communication (URLLC) service to meet low latency requirements; short packet enhanced mobile broadband (eMBB) service to save signaling overhead; and eMBB service to dynamically utilize link adaptation and improve resource utilization and spectrum efficiency. The present application particularly relates to the use of configuration authorization in unlicensed spectrum to overcome the listen-before-talk (LBT) overhead of scheduling uplink processes and possible LBT failures. The present application can reduce excessive latency and improve spectrum efficiency.

[0074] An ED or a group of EDs may have a group identifier (ID) or a Radio Network Temporary ID (RNTI) (e.g., a configured grant (CG)-RNTI or a grant-based (GB) RNTI) to share the same parameter or resource configuration. The group ID may be pre-configured or dynamically configured for each ED. Parameter or resource configuration for one or more EDs with a group ID may be performed through semi-static signaling or dynamic signaling. In some embodiments, the group ID may be used for resource deactivation or activation of the EDs in the group, and so on. In some embodiments, for the New Radio Configured Grant (NR CG) and Further Enhanced Licensed-Assisted Access (FeLAA) autonomous uplink (AUL), activation and deactivation may be performed through UE-specific downlink control information (DCI). By way of a non-limiting example, the resources activated or deactivated may include frequency, time, and reference signal (RS) associated with each ED in the group.

[0075] Configuring grant transmissions reduces latency and control overhead associated with the scheduling request / grant process for grant-based transmissions and enables more transmission repetitions to increase the likelihood of successful detection or to achieve a desired reliability.

[0076] For the above reasons, etc., it has been agreed to support uplink configuration authorization transmission in the 3GPP research project of the 5G New Radio (NR) air interface.

[0077] However, in situations where the ED encounters poor channel conditions and / or persistent resource conflicts, it is typically necessary to switch the transport block (TB) to a contention-free grant-based transmission to ensure successful decoding and / or link adaptation utilizing uplink scheduling performed by the base station, compared to the pre-configured transmission format used in the configured grant transmission.

[0078] Configuring the Authorization Resource Structure

[0079] To support the transmission of configuration authorizations in the NR licensed spectrum band, the associated resources configured for an ED or a group of EDs may include any or all of the following:

[0080] (1) Frequency resources in a transmission time interval (TTI), such as a symbol, a mini-slot, or a time slot. In one example, a physical resource block (PRB) scheme is provided. The PRB scheme indicates the physical starting frequency resource block (RB) and the allocation size, i.e., the number of allocated RBs.

[0081] (2) Time resources, including the start / end position of a data transmission time interval. For example, TTI can be a symbol, a mini-slot, or a time slot.

[0082] (3) Reference signal (RS) or RS configuration, where each ED can be configured with one or more reference signals (RS), such as a demodulation reference signal (DMRS), depending on the scenario involved. For a group of EDs, each ED can have or not have a different RS, or have a different set of RSs. Note that different RSs can be orthogonal or non-orthogonal to each other, depending on the application, such as URLLC applications or massive machine-type communication (mMTC) applications.

[0083] (4) ED / ED group specific frequency hopping parameters may include one of the following two parameters. One parameter may include a hopping pattern cycle period. In one embodiment, an absolute reference duration is defined (e.g., 20 TTIs before repeating the hopping pattern). Within the absolute reference duration, the number of hopping times to be performed before repeating the hopping pattern again (e.g., 10 times) may be determined based on the periodicity of the time interval resources (e.g., 2 TTIs) accessible to the configured authorized transmission. In another embodiment, an absolute number of hopping times may be defined, such as hopping 20 times before repeating the hopping pattern. The other one or more parameters may include one or more hopping pattern indexes, wherein an ED may have one or more hopping pattern indexes.

[0084] (5) One or more hybrid automatic repeat request (HARQ) process IDs per ED.

[0085] (6) One or more modulation and coding schemes (MCS) per ED, where the configuration of the authorized ED can explicitly or implicitly indicate which MCS to use for transmission.

[0086] (7) Configure the number of authorized transmission repetitions K, where one or more K values ​​can be configured for ED, and which K value to use depends on certain rules considering ED channel conditions, service type, etc.

[0087] (8) Power control parameters, including power ramp step size (e.g. for ED).

[0088] (9) Other parameters, including information related to general grant-based data and control transmissions. Note that sometimes, the subset of configured grant resources can be referred to as "fixed" or "reserved" resources; while the subset of grant-based resources can be referred to as "flexible" resources, which can be dynamically scheduled by the base station.

[0089] Hybrid Automatic Repeat Request

[0090] As described above, ED 110 can be used to perform configuration grant transmission using a certain set of resources. When two or more EDs 110 attempt to send data on the same set of uplink resources, conflicts may occur. In order to reduce possible conflicts, ED110 can use repetition. The ungranted repetition of the original configuration grant uplink transmission is referred to herein as "configured grant repetition". Any discussion of configured grant repetition herein should be understood to refer to the first repetition or the next repetition. Here, the term "repetition" includes both simple repetition of transmitted data and repetition using asynchronous hybrid automatic repeat request (HARQ), that is, a combination of high-speed forward error correction coding and physical layer automatic repeat request (ARQ) error control.

[0091] In the licensed spectrum segment NR, multiple auto-configuration grant repetitions may be configured to improve reliability and reduce latency associated with waiting for an ACK or NACK message. The repetitions may be performed by ED 110 until at least one of the following conditions is met:

[0092] (1) An ACK message is received from base station 170 indicating that base station 170 has successfully received and decoded the TB. The ACK may be sent in a dedicated downlink acknowledgement channel, as separate downlink control information (DCI), in a data channel, as part of a group ACK / NACK, etc.

[0093] (2) The number of repetitions reaches K. In other words, if ED 110 has performed K repetitions and still has not received an ACK from base station 170, ED 110 gives up trying to send data to base station 170. In some embodiments, K is semi-statically configured by base station 170, so that base station 170 or the network can adjust K over time.

[0094] (3) Base station 170, which switches from configuration grant transmission to grant-based transmission, receives a grant.

[0095] In one embodiment, the configuration authorization repetition may be triggered by receiving a negative acknowledgment (NACK) message or not receiving an acknowledgment (ACK) message before a timer expires. In an optional embodiment, regardless of the response of the base station 170, the configuration authorization repetition is performed K times.

[0096] The resources for performing one or more configuration grant repetitions may be preconfigured, in which case the base station determines these resources based on a priori information. Optionally, the resources for performing the configuration grant initial transmission or one or more repetitions may be determined based on an identifier in a pilot signal of an original configuration grant uplink transmission, etc. This allows the base station to predict or otherwise identify which uplink resources will carry the one or more repetitions when detecting the identifier in the pilot symbol.

[0097] Configuration grant transmission reduces the latency and control overhead associated with grant-based procedures and enables more retransmissions / repetitions for improved reliability. However, due to the lack of uplink scheduling and grant signaling, the configuration grant ED may have to be pre-configured to use at least a fixed modulation and coding scheme (MCS) level for the initial configuration grant transmission. In one embodiment, for a given resource unit, the configuration grant ED is used for uplink transmission of the configuration grant using the most reliable MCS level.

[0098] Unlicensed spectrum access

[0099] As mentioned above, given the scarcity and high cost of bandwidth in the licensed spectrum and the growing demand for data transmission capacity, there is increasing interest in offloading at least some communication services (e.g., uplink communication services) to the unlicensed spectrum. For example, there has been a great deal of interest in the unlicensed 5 GHz spectrum in which many wireless local area networks (WLANs) operate. Therefore, in order to operate in this spectrum, it may be necessary to efficiently and amicably coexist with WLANs while complying with region-specific unlicensed spectrum regulations.

[0100] The purpose of Licensed-Assisted Access (LAA) in 3GPP Release (Rel) 13 and enhanced LAA (eLAA) in Rel 14 is to migrate the spectrum-efficient MBB air interface (AI) to the vast and free unlicensed spectrum by aggregating unlicensed component carriers (CCs) on the operator's small cells with the assistance of an anchor licensed carrier.

[0101] However, the uplink in eLAA has been built around GB solutions only. To provide a global unlicensed solution, regulatory requirements must be imposed on the media access design, such as Listen-Before-Talk (LBT). Therefore, the uplink in eLAA has no advantage in terms of latency and successful media access opportunities due to multiple levels of contention from the following devices:

[0102] EDs that send scheduling requests (SRs) in standalone (SA) deployments (i.e., without an anchor licensed cell);

[0103] Scheduling the base stations of the above ED in other EDs;

[0104] Base stations sending scheduling grants (particularly for self-carrier scheduling); and

[0105] Track ED of GB transmission.

[0106] Various aspects of the present disclosure address the challenges of uplink transmission in unlicensed spectrum by implementing a CG transmission scheme as part of a unified New Radio Unlicensed (NR-U) air interface.

[0107] Before the ED can access the unlicensed spectrum to transmit in the unlicensed spectrum sub-band, the ED performs a listen-before-talk (LBT) operation (e.g., including initial clear channel assessment (ICCA) and extended clear channel assessment (ECCA)) to check whether the channel is idle before transmitting. A sub-band of an unlicensed spectrum segment may include a set of frequency resources, which includes one or more unlicensed channels located in a geographic operating area defined according to the IEEE 802.11 standard, or one or more bandwidth parts (BWP) defined according to a wireless communication standard, and so on.

[0108] In regions such as Europe and Japan, devices attempting to access unlicensed spectrum must comply with the Load Based Equipment (LBE) LBT procedure or the Frame Based Equipment (FBE) LBT procedure.

[0109] In the LBE LBT process, a device attempting to access an unlicensed spectrum can start transmitting after a clear channel assessment (CCA) succeeds. The CCA mechanism used in this LBE LBT process can be the same as the CCA mechanism used in WLAN, namely carrier sense multiple access with collision avoidance (CSMA / CA), or can be based on energy-detection-based CCA. For example, energy-detection-based CCA can use random backoff to determine the size of the contention window and the corresponding maximum channel occupancy time (MCOT), which determines the maximum time a device can transmit in the unlicensed spectrum after successfully competing for transmission resources.

[0110] In the FBE LBT process, a device attempting to access unlicensed spectrum can only start transmitting periodically after a brief success of an energy detection-based CCA.

[0111] The 3rd Generation Partnership Project (3GPP) Release 13 Long Term Evolution (LTE) specification provides a framework for Licensed Assisted Access (LAA) in unlicensed spectrum. The framework includes a Category 4 (CAT4) LBT process (LBT with random backoff or ECCA) that every device attempting to access the unlicensed spectrum must comply with. Similar to the LBT mechanism in CSMA / CA for Wi-Fi / WLAN, in the 3GPP Release 13 CAT4 LBT mechanism, each device independently generates a random backoff counter or contention window (CW); if the CCA is terminated due to a "busy" evaluation, that is, the channel is busy, the backoff counter is frozen to maintain priority in the next access attempt.

[0112] Configuration authorization uplink transmission in unlicensed spectrum

[0113] A variety of methods and apparatus are provided to address the above challenges associated with supporting configuration-authorized uplink transmission in unlicensed spectrum. In some embodiments, EDs in the same group are used to align their transmission start times after their respective LBT CCA procedures succeed, so as to simultaneously access the unlicensed spectrum and share the time-frequency resources or at least the time domain resources of the unlicensed spectrum subband for configuration-authorized uplink transmission.

[0114] Configuration or reconfiguration may be accomplished through downlink radio resource control (DL RRC) signaling or a combination of RRC signaling and downlink control information (DCI) activation.

[0115] In some embodiments of the present disclosure, a group of EDs are used to align their transmission start times to a common configured authorized transmission cycle, characterized by a configured authorized transmission cycle reference time and a configured authorized transmission cycle period. EDs configured with the same configured authorized transmission cycle can be grouped into the same unlicensed spectrum sub-band. An unlicensed spectrum sub-band may include one or more BWPs or one or more unlicensed spectrum channels, for example, with a bandwidth of 20 / 40 / 80 / 100 / 160 MHz.

[0116] The group EDs share the sub-band time-frequency resources to perform their respective unlicensed uplink transmissions within the sub-band, but since the transmission start points are aligned in time, the group EDs will not block each other in the CCA process.

[0117] System parameters (numerology) are defined as a set of physical layer parameters of the air interface used to transmit a certain signal. For OFDM-based communications, system parameters are described at least in terms of subcarrier spacing (SCS) and OFDM symbol duration, and may also be defined by other parameters such as fast Fourier transform (FFT) / inverse FFT (IFFT) length, transmission slot length, and cyclic prefix (CP) length or duration. As further detailed later, coefficient parameters for configuring authorized uplink transmissions in unlicensed spectrum according to the present disclosure may be selected to support certain functions.

[0118] Configuring the authorization transfer cycle system parameters

[0119] The alignment configuration grant transmission cycle for a given unlicensed spectrum subband by a set of configuration grants ED may be asynchronous with the alignment configuration grant transmission cycle for one or more other unlicensed spectrum subbands. The corresponding system parameters and alignment time units (ATUs) used in different unlicensed spectrum subbands may also be different. Examples of ATUs include, but are not limited to, time slots, mini-slots, and symbols.

[0120] Frame structures have been proposed that are flexible in using different system parameters. As described above, system parameters are defined as a set of physical layer parameters of the air interface used to transmit a certain signal. System parameters are described in terms of at least SCS and OFDM symbol duration, and may also be defined by other parameters such as fast Fourier transform (FFT) / inverse FFT (IFFT) length, transmission slot length, and cyclic prefix (CP) length or duration. In some implementations, the definition of system parameters may also include which of several candidate waveforms is used to transmit the signal. Possible waveform candidates may include, but are not limited to, one or more orthogonal or non-orthogonal waveforms selected from the following: Orthogonal Frequency Division Multiplexing (OFDM), Filtered OFDM (f-OFDM), Filter Bank Multicarrier (FBMC), Universal Filtered Multicarrier (UFMC), Generalized Frequency Division Multiplexing (GFDM), Single Carrier Frequency Division Multiple Access (SC-FDMA), Low Density Signature Multicarrier Code Division Multiple Access (LDS-MC-CDMA), Wavelet Packet Modulation (WPM), Faster Than Nyquist (FTN) waveform, Peak to Average Power Ratio Waveform (PAPRWF), Pattern Division Multiple Access (PDMA), Lattice Division Multiple Access (Lattice Multicarrier Code Division Multiple Access), and other waveforms. Partition Multiple Access, LPMA), Resource Spread Multiple Access (RSMA) and Sparse Code Multiple Access (SCMA).

[0121] These system parameters can be scalable because the subcarrier spacing of different system parameters is an integer multiple of each other, and the time slot length of different system parameters is also an integer multiple of each other. In some scalable system parameter sets, the subcarrier spacing and time slot length differ by 2 n This scalable design across multiple system parameters provides implementation advantages, such as scalable total OFDM symbol duration in the context of time division duplex (TDD).

[0122] When multiple EDs share frequency resources, each ED may use one or more frequency interlaces when sending the UE's respective configured authorized uplink bursts. Therefore, in some embodiments, different EDs use a corresponding set of orthogonal frequency interlaces to send their respective configured authorized uplink bursts in the unlicensed subband.

[0123] A transmission with configured grant (TCG) considered for NR, called Type 1 NR TCG, includes providing configuration information to ED using radio resource control (RRC) signaling. Examples of configuration information include, but are not limited to, periodicity, offset, time-frequency allocation, ED-specific demodulation reference signal (DMRS) configuration, modulation coding scheme / transmit block size (MCS / TBS), number of repetitions (K), and power control.

[0124] The second is called Type 2 NR TCG, where RRC signaling can be used to provide some configuration information to the ED, while other configuration information is provided to the ED in the activation downlink control information (DCI). Examples of configuration information that may be provided in RRC signaling include, but are not limited to, periodicity, power control, number of repetitions (K), and MCS / TBS. Examples of configuration information that may be provided in the activation DCI include, but are not limited to, offset, time-frequency allocation, MCS / TBS, and ED-specific DMRS configuration information.

[0125] Regarding the time domain resource allocation for the configuration grant transmission in the unlicensed spectrum, the following two parameters are configured to the above-identified type 1 and type 2 through RRC signaling.

[0126] K-repetitions: For example, K = {1, 2, 4, 8} consecutive transmissions of the same PUSCH.

[0127] Periodicity: Based on the configured subcarrier spacing, the following periodicities can be supported:

[0128] 15kHz: 2, 7, n*14, where n={1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640};

[0129] 30kHz: 2, 7, n*14, where n={1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280};

[0130] 60kHz with normal CP: 2, 7, n*14, where n={1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560};

[0131] 60kHz with extended CP (ECP): 2, 6, n*12, where n={1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560}.

[0132] The following two parameters are configured for type 1 via RRC and for type 2 via DCI activation:

[0133] timeDomainAllocation: configures the allocation of uplink grants in the time domain, indicating the table entries including startSymbolAndLength;

[0134] timeDomainOffset: In case of type 1, it indicates the offset of the resource in the time domain relative to the system frame number (SFN) = 0; in case of type 2, it indicates the offset of the resource relative to the time slot in which the activation DCI is sent.

[0135] There are several potential issues if the existing Type 1 and Type 2 procedures for transmission configuration authorization are applied to operations in unlicensed spectrum.

[0136] In the case of type 1 and type 2 procedures, for a configurable granted ED with a transmission ready to send, the ED may not be able to access preconfigured resources due to LBT failure. The above transmission may be a burst transmission. The above transmission may include, but is not limited to, one or more physical uplink shared channels (PUSCH), uplink control information (UCI) in PUSCH, or demodulation reference signal (DM-RS). If the ED attempts to access the channel before the configured time resources of a period, and if LBT fails, the ED must postpone channel access to the next configured grant period. In this case, K repetition configuration is useless. Depending on the redundancy version (RV) value, if the first transmission misses the first time slot, the retransmission may not be able to start in the subsequent time slots where the remaining repetitions in the K repetitions are configured. The existing type 1 and type 2 procedures include configuring the start symbol and length of the configured grant opportunity applied to each unlicensed time slot. If gaps in burst transmissions are to be avoided, this process may be too restrictive. The reason why this process may be too restrictive is that any configuration of PUSCH length with a starting symbol other than the first orthogonal frequency division multiplexing (OFDM) symbol (OS#0, there are 14 OFDM symbols in a slot) and / or not ending at the last OFDM symbol (OS#13) may create gaps between slots of CG time resources. Depending on the subcarrier spacing, these gaps are sufficient for other nodes to acquire the channel.

[0137] When a CG time resource has multiple access occasions, this enables the ED to access the resource and start transmission at one of multiple locations within the CG time transmission resource. The purpose of the term "access occasion" is to define the starting point of channel access, not a certain duration of the CG time transmission resource. Before the first access occasion within the CG time resource begins, the ED performs a first LBT process to access the channel at the access occasion. If the first LBT is successful, the ED can start transmission in the PUSCH at the first access occasion. However, if the LBT fails, the ED will not postpone channel access for the remaining configuration period as in the existing process. Instead of postponing to the next configuration time resource, the ED attempts to perform another LBT before the second access occasion in the CG time resource. If the LBT fails at the second transmission opportunity, the ED attempts to perform the LBT before the third access opportunity. The ED continues to attempt to perform the LBT at subsequent access opportunities until the LBT succeeds or the ED uses up all access opportunities in the current CG time transmission resource. If the ED cannot start transmission at any access opportunity in the current CG time transmission resource, the ED can postpone the access opportunity in the next CG time transmission resource in the next cycle.

[0138] In a previously filed patent application (U.S. patent application No. 15 / 694,558 filed on September 1, 2017) assigned to the assignee of the present application, a grant free (GF) technical solution for NR-U is disclosed to improve resource utilization affected by LBT. The disclosure involves configuring a group of selected UEs with the same time domain resources and orthogonal or same frequency interleaving in the same unlicensed channel, while aligning the access starting points of these UEs to avoid mutual blocking during LBT. The disclosure also involves configuring the UE to have multiple access opportunities in preconfigured time resources. Before the start of the preconfigured period, the UE performs an LBT process to access the first access opportunity. If the LBT is successful, the UE transmits in one or more PUSCHs. However, if the LBT fails, the UE does not postpone channel access for the remaining preconfigured period and attempts to access the channel at the next access opportunity in the same period.

[0139] However, using the proposed technical solution in combination with traditional NR resource configuration for Type 1 and Type 2 involves some form of modification to the NR resource configuration process. U.S. Provisional Patent Application No. 62 / 739,106, filed on September 28, 2018 and assigned to the assignee of the present application, discloses a time domain resource configuration method for configured grant (CG) transmission in unlicensed spectrum. Among the enhancements to the NR Rel-15 CG are an indication of the CG time domain resource duration within a transmission resource period and time domain resource allocation information, the latter of which identifies multiple access opportunities used by the UE to start CG uplink transmission within the CG time domain resource duration when the LBT process is successful.

[0140] Subsequent modifications include providing two options for physical uplink shared channel (PUSCH) resource allocation and transmission based on the proposed multiple channel access opportunity method, which are as follows:

[0141] (1) Each PUSCH is configured to span multiple symbols between two consecutive channel access opportunities using the length L in the parameter startSymbolandLength (SLIV);

[0142] (2) Each PUSCH is configured to span a full slot ending at a slot boundary. The first PUSCH starts with a symbol that marks the timing of a successful LBT process. If the transmission of the first PUSCH starts after the first OFDM symbol of a slot or mini-slot, puncturing and / or rate matching may also be used.

[0143] The above two options are consistent with the early agreement in NR that PUSCH is not allowed to cross slot boundaries. However, in order to avoid puncturing / rate matching on the ED side and the related complexity on the base station side, a recent agreement excludes the second option.

[0144] For operation in unlicensed spectrum, gaps between resources allocated in consecutive CG slots should be avoided. The first option described above is only applicable to mini-slot PUSCHs of 2 or 7 OFDM symbols (considering 14 OFDM symbols per slot). There may be advantages to using mini-slot PUSCHs that include more than two OFDM symbols and whose number is less than all OFDM symbols in the slot. However, this may result in gaps between resources allocated in consecutive CG slots or result in not all OFDM symbols in the mini-slot PUSCH being of equal size (i.e., length). Various aspects of the present application propose technical solutions using multiple mini-slot PUSCHs of the same or different sizes.

[0145] The granularity of starting uplink transmission every 7 OFDM symbols is suitable for subcarrier spacing of 60kHz or greater, but may not be suitable for 15kHz and 30kHz subcarrier spacing supported in NR-U. Various aspects of the present application propose a technical solution to support 15kHz and 30kHz subcarrier spacing using a mini-time slot PUSCH including less than 7 OFDM symbols.

[0146] In addition to carrying data payload, CG PUSCH can also carry demodulation reference signal (DMRS) and uplink control information (UCI). Due to the large overhead, PUSCH with a length of 2 OFDM symbols may not provide sufficient resources. Various aspects of the present application propose technical solutions for using mini-slot PUSCH with a length greater than 2 OFDM symbols but less than 7 OFDM symbols when using an SCS of 60kHz or less, which can provide sufficient resources for CG PUSCH including overhead corresponding to DMRS and UCI.

[0147] Each PUSCH carries the corresponding HARQ ID in the uplink control information (UCI). The implementation of PUSCH with a duration of 2 OFDM symbols occupies too many HARQ processes, thereby limiting the ability to send new transport blocks (TBs) in long bursts and / or when frequent retransmissions are required. Various aspects of the present application propose technical solutions using mini-slot PUSCH with a size greater than 2 OFDM symbols but less than 7 OFDM symbols, which can potentially reduce the number of required HARQ IDs.

[0148] In NR Rel.15, for different TBs, a UE may only support 2 or 4 time division multiplexing (TDM) PUSCHs per time slot. Some UEs may not support 7 time division multiplexing (TDM) PUSCHs per time slot. Various aspects of the present application propose a technical solution of using a mini-time slot PUSCH greater than 2 OFDM symbols to achieve a PUSCH greater than two TDMs per time slot.

[0149] Therefore, an enhanced function is needed to more flexibly configure / indicate the PUSCH duration / channel access opportunity.

[0150] In some embodiments, indications for defining specific implementations proposed in the present disclosure are also provided. These indications may be sent by the network side device in a radio resource control (RRC) message and / or downlink control information (DCI) signaling.

[0151] In the present application, the expression "configured grant (CG) time resources" refers to transmission resources used for configured grant (CG) transmission. In a specific embodiment of the present disclosure, the CG transmission is a CG uplink transmission. The CG time resource may consist of multiple CG time resource durations. The CG uplink transmission may be sent using one or more physical uplink shared channels (PUSCH) in the CG time resource duration. Each PUSCH includes one or more OFDM symbols. In some embodiments, the CG time resource duration may be referred to as a time slot. In this case, the time slot may be considered to include multiple PUSCH durations. When there are multiple PUSCH durations in a time slot, for the purposes of the present disclosure, these PUSCH durations may be referred to herein as mini-slot PUSCHs because they are smaller than the size of a time slot. This sub-slot-sized PUSCH duration may also be referred to as a sub-slot PUSCH, a partial slot PUSCH, or a partial subframe PUSCH.

[0152] Various aspects of the present application can flexibly configure channel access opportunities for uplink transmission within the configured authorized transmission resource duration. A non-limiting example of the transmission resource duration may be a time slot. Uplink transmissions may be sent in a physical uplink shared channel (PUSCH). The configured authorized transmission resource duration includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols. In a particular embodiment, there are 14 OFDM symbols (OFDM symbol, OS) in a time slot. The PUSCH typically spans all 14 OS or part of the OS in a time slot. In some implementations, resources for uplink transmission are allocated so that an integer number of mini-slots of equal size are accommodated in a time slot, and each mini-slot is considered a separate PUSCH. The above situation occurs when the number of OFDM symbols in a time slot is divisible by the number of OFDM symbols in a mini-slot. For example, when there are 14 OFDM symbols in each time slot, there are two possible results for a mini-slot that is larger than one OFDM symbol. The two results are: 2 OFDM symbols per mini-slot, resulting in 7 mini-slots per slot; or 7 OFDM symbols per mini-slot, resulting in 2 mini-slots per slot. In some embodiments, not all mini-slots in a slot are of equal size. This occurs when the number of OFDM symbols in a slot is not divisible by a certain mini-slot size. As a result, there are multiple mini-slots of the same size and a mini-slot with a smaller or larger number of OFDM symbols than other mini-slots of the same size. These mini-slots may be referred to as PUSCH durations in the present disclosure. Resources for mini-slots of smaller or larger OFDM symbol sizes may be allocated at the beginning or end of the slot. The first access opportunity in a slot may start from the first OFDM symbol of the slot or from an alternatively defined OFDM symbol other than the first OFDM symbol in the slot. In some embodiments, the setting of the mini-slots in the first slot may be configured to be the same as or different from the second slot or subsequent slots. In some embodiments, all time slots may be configured in the same manner, but after successfully accessing the channel using the LBT procedure in the first time slot, the second time slot and subsequent time slots after the first time slot may use a default or preconfigured PUSCH resource allocation. Examples of various embodiments are described in further detail below.

[0153] In some embodiments, the network configures the UE by indicating the time domain allocation information to the UE. This may include actions such as providing the SLIV (startSymbolAndLength) parameter. The UE may determine the time domain resources of multiple PUSCHs in the time slot based on the values ​​of L, S (provided in the SLIV parameter) and other configuration parameters, thereby determining the location of the access opportunity, for example, determining whether the mini-time slot of a smaller or larger OFDM symbol size is at the beginning or end of the time slot and whether the default configuration is used for the time slot after the first time slot in which the ED successfully accesses the channel.

[0154] Although the various embodiments described below generally refer to configured grant (CG) uplink transmissions in unlicensed spectrum, it should be understood that the principles described can be applied to downlink transmissions in licensed spectrum or unlicensed spectrum, sidelink transmissions, or semi-persistent scheduling (SPS) in V2X transmissions.

[0155] The first embodiment is capable of configuring multiple PUSCHs and multiple access opportunities in a configured grant (CG) uplink transmission resource duration to send CG uplink transmissions in multiple mini-slot PUSCHs of the same size and mini-slot PUSCHs smaller than the same size PUSCH according to the LBT result. When resources are allocated to a smaller mini-slot PUSCH at the end of the CG uplink transmission resource duration, this may be referred to as the first alternative (Alt-1). However, when resources are allocated to a smaller mini-slot PUSCH at the beginning of the CG uplink transmission resource duration, this may be referred to as the second alternative (Alt-2). The following examples illustrate Alt-1 and Alt-2.

[0156] Figure 3ATransmission resources to be used for a configured grant (CG) resource 300 are shown, and the CG resource 300 includes 2 full time slots 310, 320 and a portion of a third time slot 330. Although only 3 time slots are shown, this is only a partial view of the CG resource to focus on the details disclosed. It should be understood that more or fewer time slots may be included in each CG resource, depending on the implementation. Each time slot includes 14 OFDM symbols (OFDM symbols, OS), one of which is identified as 310a. The OFDM symbols shown in the top row 302 of the OS are representations of possible configurations of mini-slot PUSCH within the time slot. The bottom row 305 of the OS is a representation of the mini-slot PUSCH used for CG uplink transmission within the time slot when the listen-before-talk (LBT) process is successful at one of multiple access opportunities. Referring to the first time slot 310, it can be seen that there are three mini-time slots PUSCH 306a, 306b, 306c, whose duration is 4 OFDM symbols, that is, L=4, and there is a mini-time slot PUSCH 306d, whose duration only occupies 2 OFDM symbols in a total of 14 OFDM symbols. The first mini-time slot PUSCH 306a is configured to start from the first OFDM symbol 310a of the first time slot 310 (S), that is, S=0. Therefore, the first access opportunity 307a is configured to start from the first OFDM symbol (OS#0), the second access opportunity 307b is configured to start from the fifth OFDM symbol (OS#4), the third access opportunity 307c is configured to start from the ninth OFDM symbol (OS#8), and the fourth access opportunity 307d is used for a shorter mini-time slot and starts from the thirteenth OFDM symbol (OS#12). First, three mini-slots PUSCH 306a, 306b, 306c each including 4 OFDM symbols are arranged, followed by one mini-slot PUSCH 306d including only 2 OFDM symbols. Figure 3A The second time slot 320 and the third time slot 330 in are configured with the same pattern.

[0157] As shown in the bottom row 305 of the OS, the LBT process fails at the first two access opportunities 307a, 307b, so no CG uplink transmission occurs in the configured mini-time slot PUSCH 306a, 306b. The LBT process succeeds at the third access opportunity 307c, so the configured third mini-time slot PUSCH 306c is used to send a CG uplink transmission (PUSCH1) of 4 OFDM symbols. Once PUSCH1 is sent in the third mini-time slot PUSCH 306c, the configured shorter mini-time slot PUSCH 306d is used to send other CG uplink transmissions (PUSCH2) occupying 2 OFDM symbols to avoid gaps between consecutive time slots in the CG time resource. Since the channel has been accessed, the CG uplink transmission is sent in the second time slot 320 and the third time slot 330. In the second time slot 320 and the third time slot 330, the configuration shown in the top row 302 of OFDM symbols is used for the CG uplink transmission shown in the bottom row 305 of OFDM symbols, that is, 3 mini-slots PUSCH with a duration of 4 OFDM symbols and one mini-slot PUSCH (PUSCH3, PUSCH4, PUSCH5, PUSCH6 and PUSCH7) with a duration of only 2 OFDM symbols. In general, since the CG resource may be longer than 3 time slots, the CG uplink transmission continues in the time slot until the channel is released.

[0158] Figure 3A The number of configured mini-slots of the same size in the PUSCH is shown as 3, but can be generally represented as n. The number of OFDM symbols in a mini-slot PUSCH is shown as 4, but can be generally represented as L, for example, as indicated by the SLIV parameter. The number of OFDM symbols in a slot or CG uplink transmission resource duration in general is shown as 14, but can be generally represented as N symbol If L <N symbol , the UE interprets L as the length of the first or last n consecutive mini-slots within each CG uplink transmission resource duration in the CG time resource duration. In some embodiments, n can be configured as If L short =N symb -nL>0, that is, mod(N symb ,L)≠0, a shorter mini-slot PUSCH can be introduced at the end or beginning of each CG uplink transmission resource duration in the CG time resource duration. short =0, the number of OFDM symbols in the CG uplink transmission resource duration can be divided by the number L of OFDM symbols in the mini-slot PUSCH, resulting in an integer n mini-slots of the same size, but no mini-slots of different sizes.

[0159] The allowed values ​​of L can be restricted so that L short ≥L min , L min It is a predefined or preconfigured minimum CG PUSCH length determined based on one or more of the following: demodulation reference signal (DMRS) and uplink control information (UCI) overhead, frequency domain resources (full bandwidth, interleaved, subband, wideband), the number of HARQ processes configured for CG operation, and the UE capability for time division multiplexing (TDM) of PUSCH with different transport block sizes (TBS) in a time slot. Set a minimum value L for the PUSCH length min It may be useful because if the OFDM symbols of the mini-slot PUSCH are less than the minimum defined number, there may not be enough OFDM symbols to support the overhead and payload.

[0160] If L = N symbol , then the full slot allocation can be used with potential channel access at the slot boundaries. However, the channel access probability may not be suitable for the 60kHz or smaller subcarrier spacing supported in NR-U.

[0161] exist Figure 3A In some embodiments, when configuring the CG resource duration, S is set to 0 as the starting symbol of the first mini-slot PUSCH in each slot of the CG resource duration. In some embodiments, S is set to some other value other than 0. In embodiments where S≠0, use S≠0 for the first mini-slot PUSCH in the first slot. Subsequent slots in the CG resource duration revert to S=0.

[0162] Figure 3B An embodiment of a CG time resource 300 is shown, which includes 2 full time slots 310, 320 and a portion of a third time slot 330, wherein each time slot includes 14 OFDM symbols. Although only 3 time slots are shown, this is only a partial view of the CG resource to focus on the details disclosed. It should be understood that more or fewer time slots may be included in each CG resource, depending on the implementation. In this example, S is not equal to 0, but is set to a value equal to mod(14,L). In this case, L=4, so the value of S is equal to 2. In this example, the value of S is equal to Figure 3A L shortThe value of . This is convenient when the number of remaining OFDM symbols in the slot is divisible by L, which is the number of OFDM symbols in the mini-slot PUSCH. In this particular scenario, as shown in the top row 302 of OFDM symbols showing the slot configuration, the first mini-slot PUSCH 346a is configured to start from the third OFDM symbol (OS#2), the second mini-slot PUSCH 346b is configured to start from the seventh OFDM symbol (OS#6), and the third mini-slot PUSCH 346c is configured to start from the eleventh OFDM symbol (OS#10). This setting occupies all OFDM symbols in the first slot 310. As described above, in the second slot 320 and the subsequent slots 330, although S=2 is indicated in the configuration information, S is still set to 0, and the setting of the mini-slot PUSCH starts from the first OFDM symbol of the corresponding subsequent slot. In the second row 305 of the OFDM symbol, it can be seen that the first two LBT procedures failed at the first two access opportunities 347a, 347b, so there is no channel access as of the first two access opportunities. The LBT procedure succeeds at the third access opportunity 347c, so the CG uplink transmission (PUSCH1) occurs in the third mini-time slot PUSCH 346c.

[0163] The second time slot 320 has Figure 3A The third time slot 330 and subsequent time slots have the same configuration and transmission settings until the CG uplink transmission resources are released.

[0164] Figure 3C Shows something like Figure 3A Another alternative embodiment of the CG time resource 300 is shown in FIG. 3 , because there are multiple mini-time slots of the same size and one smaller mini-time slot in a time slot. Although only three time slots are shown, this is only a partial view of the CG resource to focus on the details disclosed. It should be understood that more or fewer time slots can be included in each CG resource depending on the implementation. The difference is that in Figure 3C In , a smaller mini-slot PUSCH is allocated at the beginning of the slot, called Alt-2 as mentioned above. Figure 3CA configuration is shown in the top row 302 of OFDM symbols, where a smaller mini-slot PUSCH 356a starts from the first OFDM symbol (S=0), followed by 3 consecutive mini-slot PUSCH 356b, 356c, 356d of the same size occupying the rest of the 14 OFDM symbol slot. As shown in the bottom row 305 of OFDM symbols, the first three LBT processes fail at the first three access opportunities 357a, 357b, 357c, but the fourth LBT process succeeds at the fourth access opportunity 357d, so the first CG uplink transmission (PUSCH1) is sent in the third mini-slot PUSCH 356d. In the second time slot 320, CG uplink transmissions (PUSCH2, PUSCH3, PUSCH4, PUSCH5) are sent in mini-slot PUSCH 358a, 358b, 358c, 358d. The subsequent time slot 330 has other CG uplink transmissions in the associated mini-time slot.

[0165] Figure 3D An embodiment of a CG time resource 300 is shown, which includes 2 full time slots 310, 320 and a portion of a third time slot 330, wherein each time slot includes 14 OFDM symbols. Although only 3 time slots are shown, this is only a partial view of the CG resource to focus on the details disclosed. It should be understood that more or fewer time slots may be included in each CG resource, depending on the implementation. In this example, S is not equal to 0, but is set to be equal to mod(14,L). In this case, L=4, so the value of S is equal to 2. S is equal to Figure 3B The same as in, therefore, Figure 3D The first time slot 310 has Figure 3B310 in the same configuration. In this particular scenario, as shown in the top row 302 of OFDM symbols showing the slot configuration, the first mini-slot PUSCH 366a is configured to start from the third OFDM symbol (OS#2), the second mini-slot PUSCH 366b is configured to start from the seventh OFDM symbol (OS#6), and the third mini-slot PUSCH 366c is configured to start from the eleventh OFDM symbol (OS#10). This setting occupies all OFDM symbols in the first slot 310. As described above, in the second slot 320 and the subsequent slots 330, although S=2 is indicated in the configuration information, S is still set to 0, and the setting of the mini-slot PUSCH starts from the first OFDM symbol of the corresponding slot. In the second row 305 of the OFDM symbol, it can be seen that the first two LBT procedures fail at the first two access opportunities 367a, 367b, so there is no channel access in the first two mini-time slots PUSCH 366a, 366b. The LBT procedure succeeds at the third access opportunity 367c, so the CG uplink transmission (PUSCH1) occurs in the third mini-time slot PUSCH 366c.

[0166] from Figure 3D It can be seen that when S is set to a non-zero value, a gap is introduced at the beginning of the timeslot. The network can use this flexibility to purposefully create a gap before the start of the CG uplink transmission. The network may want to use this gap for various reasons; one reason may be to allow the UE to perform LBT after other downlink or uplink transmissions have ended.

[0167] The second time slot 320 has Figure 3C The third time slot 330 and subsequent time slots have the same configuration and transmission settings until the CG uplink transmission resources are released.

[0168] It should be noted that in Figure 3B and Figure 3D In a more general form of configuration, S can be configured to be equal to

[0169] In order to inform the UE whether to support the configuration of a shorter mini-slot PUSCH (Alt-1) including fewer OFDM symbols at the beginning of the time slot or to support the configuration of a shorter mini-slot PUSCH (Alt-2) at the end of the time slot, the network device can send some form of message. For example, an indication bit can be provided in a radio resource control (RRC) message or in an activation downlink control indication (DCI) to indicate whether Alt-1 or Alt-2 is configured.

[0170] Since two different sized PUSCHs can be used in the same configuration, it is possible to maintain the transport block size (TBS) for both OFDM sized PUSCHs, or to use different TBSs for PUSCHs of different OFDM sizes. To maintain the same TBS, the base station may indicate a larger MCS value in the RRC (for type 1 or type 2) or in the DCI for type 2 for use with CG uplink transmissions in shorter mini-slot PUSCHs. Otherwise, if all CG transmissions use the same MCS level, the UE derives a smaller TBS from the indicated parameters mcsAndTBS, etc. for use only with transmissions of shorter mini-slot PUSCHs.

[0171] In some embodiments, the shorter mini-slot may be used for other forms of information besides payload data. For example, the information sent in the shorter mini-slot may be used to send a sounding reference signal (SRS), channel state information (CSI), channel quality information (CQI), or other information not configured by the base station.

[0172] The second embodiment can configure multiple access opportunities in the CG transmission resource duration to send multiple mini-slots of the same size and mini-slots longer than the mini-slots of the same size.

[0173] Figure 4ATransmission resources to be used for the CG time resource 400 are shown, and the CG time resource 400 includes 2 full time slots 410, 420 and a portion of the third time slot 430. Although only 3 time slots are shown, this is only a partial view of the CG resource to focus on the details disclosed. It should be understood that more or fewer time slots may be included in each CG resource, depending on the implementation. Each time slot includes 14 OFDM symbols. The OFDM symbols shown in the top row 402 are representations of possible configurations of mini-slot PUSCH within a time slot, and the bottom row 405 of OFDM symbols is a representation of the mini-slot PUSCH used for CG uplink transmission within the time slot when the LBT process succeeds at one of multiple access opportunities. Referring to the first time slot 410, it can be seen that there are 2 mini-time slots PUSCH 406a, 406b, both of which have a duration of 4 OFDM symbols, i.e., L=4, and there is also a mini-time slot PUSCH 406c, whose duration occupies 6 OFDM symbols out of a total of 14 OFDM symbols. The first mini-time slot PUSCH 406a is configured to start from the first OFDM symbol of the first time slot 410 (S), i.e., S=0. Therefore, the first access opportunity 407a is configured to start from the first OFDM symbol (OS#0), the second access opportunity 407b is configured to start from the fifth OFDM symbol (OS#4), and the third access opportunity 407c is used for a longer mini-time slot and is configured to start from the ninth OFDM symbol (OS#8). Thus, two mini-slots PUSCH 406a, 406b, each of 4 OFDM symbols, are first arranged, followed by one mini-slot PUSCH 406c of 6 OFDM symbols. Since this longer mini-slot PUSCH is arranged at the end of the slot, this embodiment is called Alt-1, as described above. Figure 4AThe second time slot 420 and the third time slot 430 in the OFDM symbol are configured with the same pattern. As shown in the bottom row 405 of the OFDM symbol, the LBT process fails at the first two access opportunities 407a, 407b, so no CG uplink transmission occurs in the first two mini-time slots PUSCH 406a, 406b. The LBT process succeeds at the access opportunity 407c, so the third mini-time slot PUSCH 406c is used to send a CG uplink transmission (PUSCH1) of 6 OFDM symbols. Once PUSCH1 is sent, other CG uplink transmissions continue in the second time slot 420 and the third time slot 430. In the second time slot 420 and the third time slot 430, the configuration shown in the top row 402 is used for the CG uplink transmission (PUSCH2, PUSCH3, PUSCH4 and PUSCH5) shown in the bottom row 405, i.e., 2 mini-slots PUSCH of 4 OFDM symbols in duration and one mini-slot PUSCH of 6 OFDM symbols in duration. More generally, since the CG resource may be longer than 3 time slots, the CG uplink transmission continues in the time slot until the channel is released.

[0174] The number of OFDM symbols in a mini-slot PUSCH is shown as 4, but can be more generally represented as L. The number of OFDM symbols in a slot or more generally a CG uplink transmission resource duration is shown as 14, but can be more generally represented as N symbol If L <N symbol , then L is the length of the first or last n–1 consecutive mini-slots PUSCH in each CG uplink transmission resource duration in the CG resource duration. In some embodiments, n can be configured as If mod(N symbol ,L)>0, then a L can be introduced at the end or beginning of each time slot in the CG resource duration. long =L+mod(N symbol ,L) OFDM symbols. If mod(N symbol ,L)=0, then the number of OFDM symbols in the CG uplink transmission resource duration can be divided by the number L of OFDM symbols in the mini-slot PUSCH, generating an integer number of mini-slot PUSCHs of the same size, but no mini-slot PUSCHs of different sizes.

[0175] The allowed value of L can be restricted so that L ≥ L min , L minis a predefined or preconfigured minimum CG mini-slot length determined based on one or more of the following: demodulation reference signal (DMRS) and uplink control information (UCI) overhead, frequency domain resources (full bandwidth, interleaved based, subband, wideband), the number of HARQ processes configured for CG operation, and the ED capability (also called UE capability, because the ED can be a UE) for time division multiplexing (TDM) of PUSCH with different transport block sizes (TBS) in a slot. In this case, L must be greater than L min , because L is the smaller of the two possible mini-slot sizes, in contrast to the above embodiment, in which one mini-slot of different size includes fewer OFDM symbols than the other mini-slot, and must be greater than or equal to L min .

[0176] If L = N symbol , then the full slot allocation can be used with potential channel access at the slot boundaries. However, the channel access probability may not be suitable for the 60kHz or smaller subcarrier spacing supported in NR-U.

[0177] exist Figure 4A In some embodiments, S is set to 0 as the starting symbol of the first mini-slot PUSCH in each slot of the CG resource duration. In some embodiments, S is set to some other value other than 0. In embodiments where S≠0, the use of S≠0 applies only to the first mini-slot PUSCH in the first slot. Subsequent slots in the CG resource duration revert to S=0.

[0178] Figure 4BAn embodiment of a CG time resource 400 is shown, which includes 2 full time slots 410, 420 and a portion of a third time slot 430, each of which includes 14 OFDM symbols. Although only 3 time slots are shown, this is only a partial view of the CG resource to focus on the details disclosed. It should be understood that more or fewer time slots may be included in each CG resource depending on the implementation. In this example, S is not equal to 0, but is set to be equal to mod(14,L). In this case, L=4, so the value of S is equal to 2. In this particular scenario, as shown in the top row 402 of OFDM symbols showing the time slot configuration, the first mini-time slot PUSCH 446a is configured to start from the third OFDM symbol (OS#2), the second mini-time slot PUSCH 446b is configured to start from the seventh OFDM symbol (OS#6), and the third mini-time slot PUSCH 446c is configured to start from the eleventh OFDM symbol (OS#10). This setting occupies all OFDM symbols in the first time slot 410. As described above, in the second time slot 420 and the subsequent time slot 430, although S=2 is indicated in the configuration information, S is still set to 0, and the setting of the mini-time slot PUSCH starts from the first OFDM symbol of the corresponding time slot. In the second row 405 of the OFDM symbol, it can be seen that the first two LBT procedures failed, so there is no channel access as of the first two access opportunities 447a, 447b. The LBT procedure succeeds at the third access opportunity 447c, and the CG uplink transmission (PUSCH1) occurs in the third mini-time slot PUSCH 446c.

[0179] The second time slot 420 has Figure 4A The second time slot 420 in FIG. 1 has a similar scheduling configuration and has a similar transmission format, i.e., two mini-time slots PUSCH 448a, 448b of the same size are used to send CG uplink transmissions (PUSCH2 and PUSCH3) and one mini-time slot PUSCH 448c is used to send CG uplink transmissions (PUSCH4). The third time slot 430 and subsequent time slots have the same configuration and transmission settings until the CG uplink transmission resources are released.

[0180] Figure 4C Shows something like Figure 4A Another alternative embodiment of the CG time resource 400 is shown, because there are multiple mini-time slots of the same size and one larger mini-time slot PUSCH in one time slot. Although only three time slots are shown, this is only a partial view of the CG resource to focus on the details disclosed. It should be understood that more or fewer time slots can be included in each CG resource depending on the implementation. The difference is that in Figure 4CIn the IEEE 802.11 protocol, a larger mini-slot PUSCH is configured at the beginning of the first slot, referred to as Alt-2 as described above. Figure 4C In the top row 402 of OFDM symbols, a configuration is shown where one larger mini-slot PUSCH 456a is configured starting from the first OFDM symbol (S=0), followed by 2 consecutive mini-slot PUSCH 456b, 456c of the same size each having L OFDM symbols occupying the remainder of the 14 OFDM symbol slot. As shown in the bottom row 405, the first two LBT procedures fail at the first two access opportunities 457a, 457b, but the third LBT procedure succeeds at the third access opportunity 457c, so the first CG uplink transmission (PUSCH1) is sent in the third mini-slot PUSCH 456c. In the second slot 420, CG uplink transmissions (PUSCH2, PUSCH3, and PUSCH4) are sent in mini-slot PUSCH 458a, 458b, 458c. Subsequent slots 430 have other CG uplink transmissions in the associated mini-slots.

[0181] Figure 4D An embodiment of a CG time resource 400 is shown, which includes 2 full time slots 410, 420 and a portion of a third time slot 430, each of which has 14 OFDM symbols. Although only 3 time slots are shown, this is only a partial view of the CG resource to focus on the details disclosed. It should be understood that more or fewer time slots may be included in each CG resource depending on the implementation. In this example, S is not equal to 0, but is set to be equal to mod(14,L)+L. In this case, L=4, so the value of S is equal to 6. In this particular scenario, as shown in the top row 402 of possible configurations, the first mini-slot PUSCH 466a is configured to start from the seventh OFDM symbol (OS#6) and the second mini-slot PUSCH 466b is configured to start from the eleventh OFDM symbol (OS#10). This setting occupies all OFDM symbols in the first time slot 410. As described above, in the second time slot 420 and the subsequent time slot 430, S is set to 0, and the setting of the mini-time slot PUSCH starts from the first OFDM symbol of the corresponding time slot. In the second row 405 of the OFDM symbol, it can be seen that the first LBT process fails at the first access opportunity 467a, so there is no channel access in the mini-time slot PUSCH 466a as of the first access opportunity 467a. The LBT process succeeds at the second access opportunity 467b, so the CG uplink transmission (PUSCH1) occurs in the second mini-time slot PUSCH 466b.

[0182] from Figure 4DIt can be seen that when S is set to a non-zero value, a gap is introduced at the beginning of the timeslot. The network can use this flexibility to purposefully create a gap before the start of the CG uplink transmission. The network may want to use this gap for various reasons; one reason may be to allow the UE to perform LBT after other downlink or uplink transmissions have ended.

[0183] The second time slot 420 has Figure 4C The second time slot 420 in the same configuration has a similar transmission format, i.e., one larger mini-time slot PUSCH 468a sends CG uplink transmission (PUSCH2) and two mini-time slots PUSCH 468b, 468c of the same size with L OFDM symbols send CG uplink transmission (PUSCH3 and PUSCH4). The third time slot 430 and subsequent time slots have the same configuration and transmission settings until the CG uplink transmission resources are released.

[0184] It should be noted that in Figure 4B and Figure 4D In a more general form of configuration, S can be configured to be equal to

[0185] In order to inform the UE whether to support the configuration of a longer mini-slot PUSCH (Alt-1) including more OFDM symbols at the beginning of the time slot or to support the configuration of a longer mini-slot PUSCH (Alt-2) at the end of the time slot, the network device can send some form of message. For example, an indication bit can be provided in an RRC message or in an activation DCI to indicate whether Alt-1 or Alt-2 is configured.

[0186] In some embodiments, in order to indicate whether a shorter mini-slot PUSCH or a longer mini-slot PUSCH is used in combination with other mini-slots of the same size including L OFDM symbols, the network device can send some form of message. For example, an indication bit can be provided in an RRC message or in an activation DCI to indicate whether a long mini-slot PUSCH or a short mini-slot PUSCH is configured. In some embodiments, the network device can send a 2-bit configuration message in an RRC message or in an activation DCI, where one bit indicates whether Alt-1 or Alt-2 is configured and the other bit indicates whether a long mini-slot PUSCH or a short mini-slot PUSCH is configured.

[0187] Since two different OFDM sizes of PUSCH can be used in the same configuration, it is possible to maintain the transport block size (TBS) for both sizes of mini-slots, or to use different TBSs for PUSCHs of different OFDM sizes. In order to maintain the same TBS, the base station should indicate a smaller MCS value in the RRC (for type 1 or type 2) or in the DCI for type 2 for use with CG uplink transmissions in the longer mini-slot PUSCH. Otherwise, if all CG transmissions use the same MCS level, the UE derives the larger TBS from the parameters mcsAndTBS, etc. indicated in the configuration information, for use only with transmissions in the longer mini-slot.

[0188] In some embodiments, the network side device may configure the UE with a hybrid configuration. The hybrid configuration includes multiple mini-slot PUSCHs per time slot for all CG time resource slots in which the UE attempts to access the channel within the same activation configuration duration. However, during transmission, once the UE successfully accesses the channel in the time slot, for subsequent CG time resource slots, if any, a default or predefined PUSCH resource allocation configuration is used. A specific example of a default or predefined PUSCH resource allocation configuration for a second transmission slot and subsequent transmission slots may involve using a full time slot for a single CG PUSCH transmission. If the CG uplink transmission starts at time slot m, the UE applies the default configuration to all remaining CG time slots starting from time slot m+1. The base station may start blind detection of the PUSCH demodulation reference signal (DMRS) of the CG UE based on the default PUSCH configuration instead of the mini-slot PUSCH configuration starting from CG time slot m+1.

[0189] In order to inform the UE that the hybrid configuration is to be used, the network device sends configuration information. For example, the configuration information may include an indication bit in the RRC or activation DCI to indicate that the hybrid configuration is to be used.

[0190] Before the UE attempts to access the configured transmission resources, the UE may follow the same process as Alt-1 or Alt-2 of the above two embodiments, wherein, for all CG time resource transmission time slots, one of the mini-slot PUSCH includes fewer or more OFDM symbols than the indicated L OFDM symbols. In some embodiments, the number of time slots to which the configuration of Alt-1 or Alt-2 of the above two embodiments applies is determined based on the maximum number of channel access attempts. When the CG time resources are within the channel occupancy time (COT) initiated by the base station, limiting the maximum number of channel access attempts may apply, wherein the UE is instructed to switch from the CAT2 LBT process instead of switching from CAT4.

[0191] In some embodiments, CG transmissions, such as PUSCH transmissions, may only start from a configured PUSCH start position.

[0192] In some embodiments, other parameters may be used to indicate the minimum number of OFDM symbols between 2 consecutive access opportunities. This parameter may be used to limit the number of channel access attempts. In a specific example, when L=2, the channel access opportunity may be limited by other parameters to occur once every 4 OFDM symbols, i.e., at the beginning of every other PUSCH.

[0193] Figure 5A The transmission resources to be used for the CG time resource 500 are shown, and the CG time resource 500 includes three full time slots 510, 520, and 530. Although only three time slots are shown, this is only a partial view of the CG resource to focus on the details disclosed. It should be understood that each CG resource may include more or fewer time slots depending on the implementation. Each time slot includes 14 OFDM symbols. The configuration of the first time slot 510 is similar to Figure 3A The first time slot 310 of FIG. 1 is shown in FIG. 1 because there are three mini-slots PUSCH 506a, 506b, 506c of the same size and one smaller mini-slot PUSCH 506d. Figure 5AThe configuration of each time slot is shown in the top row 502, while the CG uplink transmission generated after successful channel access is shown in the bottom row 505. In the first time slot 510, the LBT process fails at all 4 access opportunities 507a, 507b, 507c, 507d, so the configured mini-time slot PUSCH 506a, 506b, 506c, 506d in the first time slot 510 is not sent. In the second time slot 520, the LBT process fails at the first access opportunity 517a, so no CG uplink transmission is sent in the first mini-time slot PUSCH 516a. The LBT process succeeds at the second access opportunity 517b, so the configured second mini-time slot PUSCH 516b is used for CG uplink transmission (PUSCH1). Since the channel has been successfully accessed, the remaining configured mini-time slots PUSCH 516c, 516d in the second time slot 520 can be used to send CG transmissions (PUSCH2, PUSCH3). After successfully accessing the CG time resource 500 in the second time slot 520, the configuration may switch to a default or predefined PUSCH resource allocation configuration in the third time slot 530 and any subsequent time slots (if any). Figure 5A In the specific example of , the default PUSCH resource allocation configuration is that the third time slot 530 is used entirely for a single CG transmission (PUSCH4). In some embodiments, the hybrid configuration information may include a reference to a previous CG configuration, such as a configuration ID, so that the UE uses its related parameters (e.g., SLIV and mcsAndTBS) as default configuration parameters. In some other embodiments, these default configuration parameters are included in the hybrid configuration information itself.

[0194] The hybrid configuration exploits the fine granularity of mini-slots to improve the channel access probability while minimizing the associated overhead and complexity issues or special handling when sending repetitions or HARQ retransmissions.

[0195] Using Alt-2 (i.e., configuring short or long mini-slot PUSCH at the beginning of the first slot) together with the hybrid configuration reduces the possibility of sending CG uplink transmission using short or long mini-slot PUSCH at the beginning of the first transmission slot, because the probability of the LBT process failing at the first access opportunity of the first transmission slot is higher than the probability of failing at the last access opportunity of the first transmission slot.

[0196] Figure 5B , Figure 5C , Figure 5D and Figure 5EMore examples of different embodiments for scheduling a shorter and longer mini-slot PUSCH and a hybrid configuration of multiple mini-slot PUSCHs of the same size with L OFDM symbols, wherein the first mini-slot PUSCH is configured to start from the first OFDM symbol (S=0) or from an optional OFDM symbol of a successful access to the mini-slot PUSCH in the first slot. Although only 3 slots are shown in each example, this is only a partial view of the CG resource to focus on the details disclosed. It should be understood that more or fewer slots may be included in each CG resource depending on the implementation.

[0197] exist Figure 5B In FIG. 5 , a shorter mini-slot PUSCH is configured to start from the first OFDM symbol (S=0) of the slot, so the configuration shown in the top row 502 of OFDM symbols looks the same as Figure 3C As shown in the bottom row 505 of OFDM symbols, in the first time slot 510, the first three LBT processes fail at the first three access opportunities. The fourth LBT process succeeds at the fourth access opportunity, so a CG uplink transmission (PUSCH1) occurs. Since this embodiment uses a hybrid configuration, Figure 5B The second time slot 520 and subsequent time slots 530 in the CG time resource duration use the default PUSCH resource allocation configuration, such as using the full time slot for each subsequent CG uplink transmission (PUSCH2, PUSCH3) until the channel is released. Therefore, unless the channel is successfully accessed at the first opportunity within the time slot in the CG time resource duration, the shorter mini-slot PUSCH is not sent.

[0198] exist Figure 5C In FIG. 5 , a longer mini-slot PUSCH is configured to start from the first OFDM symbol (S=0) of the slot, so the configuration shown in the top row 502 of OFDM symbols looks the same as Figure 4C As shown in the bottom row 505 of OFDM symbols, in the first time slot 510, the first two LBT processes fail at the first two access opportunities. The third LBT process succeeds at the third access opportunity, so a CG uplink transmission (PUSCH1) occurs. Since this embodiment uses a hybrid configuration, Figure 5C The second time slot 520 and subsequent time slots 530 in the CG time resource duration use the default PUSCH resource allocation configuration, such as using the full time slot for each subsequent CG uplink transmission (PUSCH2, PUSCH3) until the channel is released. Therefore, unless the channel is successfully accessed at the first opportunity within the time slot in the CG time resource duration, the longer mini-slot PUSCH is not sent.

[0199] exist Figure 5DIn , the mini-slot PUSCH is configured to start from an OFDM symbol other than the first OFDM symbol of the slot (S≠0). Figure 5D In the example, S is equal to mod(14,L), where L=4, resulting in a value of S equal to 2. Figure 5D In the example, S is represented by L short .for Figure 5D In the first time slot 510 of the OFDM symbol, the configuration shown in the top row 502 looks similar to Figure 3B The configuration of the first time slot 310 shown in the top row 302 of FIG. 3 is similar. In the hybrid configuration, since the second time slot and subsequent time slots after the first time slot where CG uplink transmission occurs have a default PUSCH resource allocation configuration, each time slot is configured as the first time slot where CG uplink transmission may occur, that is, the same combination of the starting symbol and length of consecutive mini-time slot PUSCH is repeated in consecutive allocated time slots. Figure 5D As shown, in the bottom row 505, in the first time slot 510, all three LBT processes fail at the first three access opportunities. Since each time slot is configured the same as the first time slot 510, the second time slot 520 now includes multiple mini-slot PUSCHs, where the first mini-slot PUSCH starts from S=2, that is, from the third OFDM symbol. The first LBT process fails at the first access opportunity in the second time slot 520. The second LBT process succeeds at the second access opportunity, so a CG uplink transmission (PUSCH1) occurs. The second CG uplink transmission (PUSCH2) occurs in the second mini-slot PUSCH of the second time slot 520. Since this embodiment uses a hybrid configuration, even if Figure 5D The third time slot 530 and subsequent time slots in are configured to start from the third OFDM symbol, because the UE can switch to the default PUSCH resource allocation configuration, so these time slots can actually start from the first OFDM symbol. Figure 5D The default configuration in is to use the full time slot for each subsequent CG uplink transmission (PUSCH3) until the channel is released.

[0200] exist Figure 5E In , the mini-slot PUSCH is configured to start from an OFDM symbol other than the first OFDM symbol of the slot (S≠0). Figure 5E In the example of , S is still equal to 2, and the same combination of the starting symbol and length of consecutive mini-slot PUSCH is repeated in consecutive allocated slots. Figure 5E As can be seen in the bottom row 505 of the OFDM symbol, in the first time slot 510, the first two LBT processes fail at the first two access opportunities. The third LBT process succeeds at the third access opportunity, so a CG uplink transmission (PUSCH1) occurs. Since this embodiment uses a hybrid configuration, Figure 5E The second time slot 520 and subsequent time slots 530 in the PUSCH may use a default PUSCH resource allocation configuration, for example, using the full time slot for each subsequent CG uplink transmission (PUSCH2, PUSCH3) until the channel is released.

[0201] Alt-2 (i.e., configuring the short or long mini-slot PUSCH at the beginning of the first slot) is used with a hybrid configuration, indicating S=mod(N symb ,L) does not need to use short or long mini-slot PUSCH to send CG uplink transmissions at the beginning of the first transmission slot, regardless of the result of LBT. This observation applies to indicating S as S=mod(N symb ,L)+mL, where This is because the number of remaining symbols N in the slot symb –S is always divisible by L. Subsequent time slots are restored to the default PUSCH resource allocation configuration, such as Figure 5D and Figure 5E as shown in the example.

[0202] A hybrid configuration can also be implemented by using multiple offsets for each activated CG configuration. The first offset is associated with the first CG transmission duration (D1), where each slot is configured with multiple mini-slots PUSCH as in Alt-1 or Alt-2. The second (larger) offset is associated with the second CG transmission duration (D2) where the default PUSCH resource allocation configuration is applied.

[0203] These offsets may be set so that the slots in D1 and D2 are consecutive in time or overlap in time. In the case of overlap, after the UE acquires the channel and starts transmitting in one of the overlapping slots or in the slot before the overlapping slot, the UE may start applying the default PUSCH resource allocation configuration in the next slot.

[0204] A hybrid configuration can also be implemented using multiple activated CG configurations instead of the same activated CG configuration. The first activation configuration is associated with a first set of time domain resource configuration parameters, which includes a first periodicity, a first offset, and a first CG time resource (D1), wherein each time slot is configured with multiple mini-slot PUSCHs as in Alt-1 or Alt-2. The second activation configuration is associated with a second set of time domain resource configuration parameters, which includes a second periodicity, a second offset, and a second CG time resource (D2) to which a default PUSCH resource allocation configuration is applied. These two configurations target the same CG time resource by matching the values ​​of the first and second periodicities, offsets, and CG time resource parameters. After the UE accesses the channel and starts transmitting in a time slot in the same CG time resource, the UE can apply the second activation configuration, including the second PUSCH resource allocation configuration, starting from the next time slot. In some cases, if the first activation CG configuration and the second activation CG configuration share the same access opportunity in the first time slot in the CG time resource, and the UE successfully accesses the channel at the access opportunity, the UE only applies the second activation configuration including the second PUSCH resource allocation configuration to all time slots in the CC time resource.

[0205] Other embodiments described below can configure mini-slots in a time slot or indicate that multiple mini-slots PUSCH occurs in a time slot. For example, if it is considered that the granularity of 2 OFDM symbols or 7 OFDM symbols is sufficient (for N symbol =14), and it is desired to create a non-uniform allocation pattern within each offset CG resource duration, a bitmap of length D bits can be used in the RRC or activation DCI, so that each bit in the bitmap corresponds to L OFDM symbols indicated in SLIV, indicating the mini-slot PUSCH length and the bitmap size D = n*NumberOfTransmissionSlotsPer Offset. One or more '0's can be indicated in the bitmap to create the desired gap duration within the CG time resource based on the sub-carrier spacing (SCS) being used. This embodiment can also allocate partial time slots.

[0206] If Alt-1 or Alt-2 is used as described in the above example, where short or long mini-slot PUSCH is used with multiple mini-slot PUSCHs of the same size having L OFDM symbols, then different transport block sizes (TBS) are used for transmission in the short or long mini-slot PUSCH. The following are possible options.

[0207] In some embodiments, HARQ retransmissions of a transport block (TB) originally sent in a short or long mini-slot PUSCH can only be sent in a short or long mini-slot PUSCH similar to the situation in the same period or a subsequent period according to the retransmission criteria in the CG resources.

[0208] Fig. 6A An example of a configuration (Alt-1) where a longer mini-slot PUSCH is located at the end of the first slot is shown, where S=0, and the first two LBT procedures fail at the first two access opportunities, but the third LBT procedure succeeds. Fig. 6A With Figure 4A Similar mini-slot PUSCH setup and successful access. Since the mini-slots PUSCH 621, 631 where CG uplink transmissions (PUSCH1 and PUSCH4) occur are of the same size, these repetition-sized mini-slots PUSCH 621, 631 can be used for the first repetition (initial transmission) and the second repetition, and if necessary, for more repetitions, while the channel is still available.

[0209] Figure 6B An example is shown where a shorter mini-slot PUSCH is located at the beginning of the first slot (Alt-2), where S=0, and the first three LBT procedures fail at the first three access opportunities, but the fourth LBT procedure succeeds. Figure 6B With Figure 3C Similar mini-slot PUSCH setup and successful access. Since the mini-slot PUSCH 622, 632 where the CG uplink transmissions (PUSCH2 and PUSCH6) occur are of the same size, these repetition-sized mini-slot PUSCH 622, 632 can be used for the first repetition (initial transmission) and the second repetition, and if necessary, for more repetitions, while the channel is still available.

[0210] In some embodiments, HARQ retransmissions of a transport block (TB) originally sent using short or long mini-slot PUSCH may be limited to scheduled (grant-based) retransmissions in dedicated resources.

[0211] In some embodiments, K repetitions (K>1) of a TB initially sent in a short or long mini-slot PUSCH may only be performed in non-continuous resources, i.e., only in a short or long mini-slot PUSCH similar to the situation in a continuous CG slot continuing in the same cycle or in a subsequent cycle.

[0212] In some embodiments, K>1 may not be used for such initial transmissions, for example, the smaller TBS used with short mini-slot PUSCHs may be small enough to reduce the bit error rate and improve the detection of small TBs when sent in a larger PUSCH. Otherwise, if all configured PUSCHs are assumed to use the same TBS, the UE follows the normal process for HARQ retransmissions in the CG resources.

[0213] The UE may first select the earliest available contiguous CG PUSCH resource from the transmission of the initial transmission in the same time slot or the same period to send some or all of the indicated K repetitions. The remaining repetitions (if any) may then be sent in non-contiguous resources. For low-latency applications, these remaining repetitions may be discarded.

[0214] If a hybrid configuration is used, HARQ retransmissions of TBs originally sent in a mini-slot CG uplink transmission using a different TBS in the first slot may be limited to scheduled (grant-based) retransmissions in dedicated resources, particularly when Alt-2 is used in the first slot.

[0215] For a TB initially sent in the first CG slot using multiple mini-slot PUSCHs, the actual number of repetitions (K>1) may be limited by the number of CG uplink transmissions actually sent using mini-slot PUSCHs of length L (maximum n).

[0216] Figure 7 An example of a hybrid configuration in which a shorter mini-slot PUSCH (Alt-1) is configured at the end of a timeslot is shown, where S=0, and the first five LBT procedures fail at the first five access opportunities, but the sixth LBT procedure entering the second timeslot succeeds. Figure 7 With Figure 5A Similar mini-slot PUSCH settings and hybrid configurations. Figure 7 In the specific example of , since the time slot after the first time slot where the successful CG uplink transmission occurs will default to the full time slot for CG uplink transmission, only three mini-time slots PUSCH 721, 722, 723 appearing in the time slot 720 can be used for repetition before the CG uplink transmission of the full time slot 730. The first two mini-time slots PUSCH 721, 722, and the possible third mini-time slot PUSCH 723, i.e., the shorter mini-time slot PUSCH, can be used for the first repetition (initial transmission), the second repetition, and the possible third repetition, depending on whether the same TBS can be used for all mini-time slots PUSCH and whether the shorter mini-time slot PUSCH is used for data transmission or other uplink information or signals.

[0217] In some embodiments, the TBs initially sent in the short mini-slot CG uplink transmission may not support repetition, since similar resources or a specific transport blocksize (TBS) are not guaranteed to reappear in subsequent slots.

[0218] Figure 8 A flowchart of exemplary operations 800 performed in a user equipment (UE) is provided for one embodiment of the present disclosure.

[0219] In step 810, the UE receives CG resource configuration information from the base station to configure the UE to perform multiple CG uplink transmissions in the CG transmission resource. The CG transmission resource may be a time slot, etc. The CG transmission resource includes multiple PUSCH durations, each of which includes multiple OFDM symbols. The PUSCH duration may be the above-mentioned FIG. 3A to FIG. 3D , FIG. 4A to FIG. 4D , FIG. 5A to FIG. 5E , Fig. 6A , Figure 6B and Figure 7 The mini time slot described in the embodiment of the present invention. The CG resource configuration information includes an indication of a fixed-size PUSCH duration within the CG transmission resource. The CG resource configuration information is used to configure multiple access opportunities for the UE to start CG uplink transmission within the CG transmission resource.

[0220] In optional step 820, the UE configures multiple PUSCH durations in the CG transmission resources based on the fixed-size PUSCH duration and the number of multiple OFDM symbols in the first CG transmission resource.

[0221] In step 830, when the CG transmission resource is the first CG transmission resource for which a listen-before-talk (LBT) process has succeeded at one of multiple access opportunities, the UE sends a CG uplink transmission having a duration based on a fixed-size PUSCH duration and the number of multiple OFDM symbols in the first CG transmission resource.

[0222] Example operations 800 represent example embodiments. Various methods of performing the illustrated operations and examples of other operations that may be performed are described herein. Other variations may be apparent or become apparent.

[0223] Fig. 9 A flowchart of exemplary operation 900 of using a configuration authorization in an unlicensed spectrum performed in a network-side device is provided for one embodiment of the present disclosure.

[0224] In step 910, the network device sends resource configuration information to the UE to configure the UE to perform multiple CG uplink transmissions in the CG transmission resources. The CG transmission resources include multiple PUSCH durations, each of which includes multiple OFDM symbols. The CG resource configuration information includes an indication of a fixed-size PUSCH duration within the CG transmission resource. The CG resource configuration information is used to configure multiple access opportunities for the UE to start a CG uplink transmission within the CG transmission resource.

[0225] In step 920, when the CG transmission resource is the first CG transmission resource in which a listen-before-talk (LBT) process executed by the UE is successful at one of multiple access opportunities, the network device receives a CG uplink transmission whose duration is based on a fixed-size PUSCH duration and the number of multiple OFDM symbols in the first CG transmission resource.

[0226] Example operations 900 represent example embodiments. Various methods of performing the illustrated operations as well as examples of other operations that may be performed are described herein. Other variations may be apparent or become apparent.

[0227] It should be understood that one or more steps in the embodiment method provided herein can be performed by corresponding units or modules. For example, a signal can be sent by a sending unit or a sending module. A signal can be received by a receiving unit or a receiving module. A signal can be processed by a processing unit or a processing module. Each unit or module can be hardware, software, or a combination thereof. For example, one or more units / modules can be integrated circuits, such as field programmable gate arrays (FPGAs) or application-specific integrated circuits (ASICs). It should be understood that, in the case where these modules are software, these modules can be retrieved in whole or in part by a processor as needed, retrieved individually or collectively for processing, retrieved in one or more instances as needed, and these modules themselves can include instructions for further deployment and instantiation.

[0228] Other details about ED and base station are known to those skilled in the art. Therefore, for the sake of clarity, these details are omitted here.

[0229] In the foregoing description, for the purpose of explanation, many details are set forth in order to fully understand these embodiments. However, it is apparent to those skilled in the art that these details are not required. In other cases, well-known electrical structures and circuits are shown in the form of block diagrams to avoid ambiguity. For example, no specific details are provided as to whether the embodiments described herein are implemented as software routines, hardware circuits, firmware, or a combination thereof.

[0230] The present disclosure embodiment can be represented as a computer program product stored in a machine-readable medium (also referred to as a computer-readable medium, a processor-readable medium, or a computer-usable medium including a computer-readable program code). The machine-readable medium can be any suitable tangible non-transient medium, including magnetic, optical or electrical storage media, including a floppy disk, a compact disk read only memory (CD-ROM), a storage device (volatile or non-volatile) or a similar storage mechanism. The machine-readable medium can include various instruction sets, code sequences, configuration information or other data, and when executing these contents, the processor is caused to perform the steps in the method provided by an embodiment of the present disclosure. It will be understood by those of ordinary skill in the art that other instructions and operations required to implement the described implementation can also be stored in the machine-readable medium. The instructions stored in the machine-readable medium can be executed by a processor or other suitable processing device, and can be connected to the circuit system to perform the above tasks.

[0231] The contents of the drawings are for illustrative purposes only, and the present disclosure is in no way limited to the specific exemplary embodiments explicitly shown in the drawings and described herein. Figure 1 1 is a block diagram of a communication system in which an embodiment may be implemented. Other embodiments may be implemented in a communication system including more network elements than shown or having a different topology than the example shown. Similarly, the examples in other figures are also for illustration purposes only.

[0232] Other implementation details may also vary between different embodiments. For example, some of the examples above involve NR and LTE terminology. However, the embodiments disclosed herein are by no means limited to NR or LTE systems.

[0233] In addition, although primarily described in the context of methods and systems, other implementations are also contemplated, for example, as instructions stored in a non-transitory processor-readable medium. When one or more processors execute the instructions, the one or more processors are caused to perform a method.

[0234] In the first example of the present application, a method for a user equipment (UE) to use a configuration grant in an unlicensed spectrum is provided. The method includes: the UE receives a configuration grant (configured grant, CG) resource configuration information from a network device to configure the UE to perform multiple CG uplink transmissions in a CG transmission resource. The CG transmission resource includes multiple PUSCH durations, each PUSCH duration includes multiple orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols. The CG resource configuration information includes an indication of a fixed-size PUSCH duration within the CG transmission resource. The CG resource configuration information is used to configure multiple access opportunities for the UE to start a CG uplink transmission within the CG transmission resource. When the CG transmission resource is a first CG transmission resource that includes a listen-before-talk (LBT) process that succeeds at one of multiple access opportunities, the method includes: sending a CG uplink transmission whose duration is based on a fixed-size PUSCH duration and the number of multiple OFDM symbols in the first CG transmission resource.

[0235] In some embodiments related to the first example, the method further includes configuring multiple PUSCH durations in the CG transmission resource based on a fixed-size PUSCH duration and the number of multiple OFDM symbols in the first CG transmission resource.

[0236] In some embodiments related to the first example, configuring multiple PUSCH durations includes at least one of the following steps: configuring at least one PUSCH duration equal to a PUSCH duration of a fixed size; configuring at least one PUSCH duration equal to a PUSCH duration of a fixed size and a PUSCH duration less than the PUSCH duration of the fixed size; and configuring at least one PUSCH duration equal to a PUSCH duration of a fixed size and a PUSCH duration greater than the PUSCH duration of the fixed size.

[0237] In some embodiments related to the first example, a CG uplink transmission having a transmission duration based on a fixed-size PUSCH duration and a number of multiple OFDM symbols in a first CG transmission resource including a successful LBT process includes at least one of the following steps: sending at least one first CG uplink transmission, wherein each CG uplink transmission is within a PUSCH duration equal to the fixed-size PUSCH duration; sending a second CG uplink transmission within a PUSCH duration less than the fixed-size PUSCH duration; sending a third CG uplink transmission within a PUSCH duration greater than the fixed-size PUSCH duration; sending at least one first CG uplink transmission within a PUSCH duration equal to the fixed-size PUSCH duration and sending a second CG uplink transmission within a PUSCH duration less than the fixed-size PUSCH duration; and sending at least one first CG uplink transmission within a PUSCH duration equal to the fixed-size PUSCH duration and sending a third CG uplink transmission within a PUSCH duration greater than the fixed-size PUSCH duration.

[0238] In some embodiments related to the first example, a CG uplink transmission within a PUSCH duration that is smaller than a fixed-size PUSCH duration is located within the first PUSCH duration or the last PUSCH duration in the first CG transmission resource.

[0239] In some embodiments related to the first example, a CG uplink transmission within a PUSCH duration that is larger than a fixed-size PUSCH duration is located within the first PUSCH duration or the last PUSCH duration in the first CG transmission resource.

[0240] In some embodiments related to the first example, the method also includes: the UE receives the following indication: a PUSCH duration greater than a fixed-size PUSCH duration or a PUSCH duration less than a fixed-size PUSCH duration is the first PUSCH duration in the first CG transmission resource; or, a PUSCH duration greater than a fixed-size PUSCH duration or a PUSCH duration less than a fixed-size PUSCH duration is the last PUSCH duration in the first CG transmission resource.

[0241] In some embodiments related to the first example, the method further includes: the UE receives the following indication: one of the PUSCH durations is greater than a fixed-size PUSCH duration; or one of the PUSCH durations is less than a fixed-size PUSCH duration.

[0242] In some embodiments related to the first example, the method further includes: receiving an indication of a starting OFDM symbol in a CG transmission resource, wherein the indication indicates a starting OFDM symbol for a first CG uplink transmission within a first PUSCH duration.

[0243] In some embodiments related to the first example, if S is not equal to 0, the value of S is applied only to the first CG transmission resource among multiple configured CG transmission resources, or only to the first CG transmission resource, where the LBT process has successfully accessed the first CG transmission resource.

[0244] In some embodiments related to the first example, when multiple PUSCH durations are configured in a CG transmission resource, the starting OFDM symbol is one of the following: the first OFDM symbol in the CG transmission resource; symbols ,L) defined OFDM symbol, where N symbols = is equal to the number of OFDM symbols in the first cycle, L is the number of OFDM symbols defined in the CG uplink transmission time domain resource duration; and m*L+mod(N symbols ,L) defined OFDM symbol, where m = 0, 1 to n–1.

[0245] In some embodiments related to the first example, the method further includes: in the second CG transmission resource and subsequent CG transmission resources, configuring the PUSCH duration in the same configuration as the first CG transmission resource.

[0246] In some embodiments related to the first example, the method also includes, in the second CG transmission resource and subsequent CG transmission resources, when S is not equal to 0, configuring the PUSCH duration in a predefined configuration different from the configuration of the first CG transmission resource.

[0247] In some embodiments related to the first example, when multiple CG uplink transmissions are sent within the corresponding PUSCH duration in the CG transmission resource, the starting OFDM symbol is one of the following: the first OFDM symbol in the CG transmission resource including the successful LBT process; the first OFDM symbol in the CG transmission resource including the successful LBT process. symbols ,L) defined OFDM symbol, where N symbols = is equal to the number of OFDM symbols in the first cycle, L is the number of OFDM symbols defined in the CG uplink transmission time domain resource duration; and m*L+mod(N symbols ,L) defined OFDM symbol, where m = 0, 1 to n–1.

[0248] In some embodiments related to the first example, the method also includes: sending the CG uplink transmission in a predefined configuration different from the configuration of the first CG transmission resource in a second CG transmission resource and subsequent CG transmission resources after the CG uplink transmission is successful in the first CG transmission resource.

[0249] In some embodiments related to the first example, a predefined configuration different from the configuration of the first CG transmission resources includes a CG uplink transmission within a PUSCH duration occupying the entire cycle.

[0250] In some embodiments related to the first example, the method further includes sending a CG uplink transmission in a second CG transmission resource and subsequent CG transmission resources after the CG uplink transmission is successful in the first CG transmission resource in the same configuration as that of the first CG transmission resource.

[0251] In some embodiments related to the first example, the fixed-size PUSCH duration portion is defined by a PUSCH duration that is smaller than the fixed-size PUSCH duration, which PUSCH duration that is smaller than the fixed-size PUSCH duration must be greater than or equal to a minimum number of OFDM symbols.

[0252] In some embodiments related to the first example, the method also includes: receiving a larger modulation and coding scheme (MCS) value to send a CG uplink transmission within a PUSCH duration that is less than a fixed-size PUSCH duration.

[0253] In some embodiments related to the first example, the method also includes: receiving a smaller MCS value to send a CG uplink transmission within a PUSCH duration that is greater than a fixed size.

[0254] In some embodiments related to the first example, the method also includes: receiving an MCS value to send a CG uplink transmission within a fixed-size PUSCH duration, within a PUSCH duration less than the fixed-size PUSCH duration, or within a PUSCH duration greater than the fixed-size PUSCH duration.

[0255] In some embodiments related to the first example, the method further includes: receiving the MCS value in a radio resource control (RRC) message or downlink control information (DCI).

[0256] In a second example of the present application, a user equipment (UE) is provided, the UE comprising a processor and a computer-readable medium. The computer-readable medium stores computer-executable instructions, and when the processor executes the computer-executable instructions, the above method is executed.

[0257] In a third example of the present application, a method for a network device to use a configuration grant in an unlicensed spectrum is provided. The method includes: the network device sends a configuration grant (configured grant, CG) resource configuration information to a user equipment (UE) to configure the UE to perform multiple CG uplink transmissions in a CG transmission resource. The CG transmission resource includes multiple PUSCH durations, each PUSCH duration includes multiple orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols. The CG resource configuration information includes an indication of a fixed-size PUSCH duration within the CG transmission resource. The CG resource configuration information is used to configure multiple access opportunities for the UE to start a CG uplink transmission within the CG transmission resource. When the CG transmission resource is a first CG transmission resource that includes a listen-before-talk (LBT) process performed by the UE that succeeds at one of multiple access opportunities, the method includes: the network device receives a CG uplink transmission whose duration is based on a fixed-size PUSCH duration and the number of multiple OFDM symbols in the first CG transmission resource.

[0258] In some embodiments related to the third example, the method further includes configuring multiple PUSCH durations in the CG transmission resource based on a fixed-size PUSCH duration and the number of multiple OFDM symbols in the first CG transmission resource.

[0259] In some embodiments related to the third example, configuring multiple PUSCH durations includes at least one of the following steps: configuring at least one PUSCH duration equal to a PUSCH duration of a fixed size; configuring at least one PUSCH duration equal to a PUSCH duration of a fixed size and a PUSCH duration less than the PUSCH duration of the fixed size; and, configuring at least one PUSCH duration equal to a PUSCH duration of a fixed size and a PUSCH duration greater than the PUSCH duration of the fixed size.

[0260] In some embodiments related to the third example, receiving a CG uplink transmission whose reception duration is based on a PUSCH duration of a fixed size and a number of multiple OFDM symbols in a first CG transmission resource including a successful LBT process includes at least one of the following steps: receiving at least one first CG uplink transmission, wherein each first CG uplink transmission is in a PUSCH duration equal to the PUSCH duration of a fixed size; receiving a second CG uplink transmission in a PUSCH duration less than the PUSCH duration of a fixed size; receiving a third CG uplink transmission in a PUSCH duration greater than the PUSCH duration of a fixed size; receiving at least one first CG uplink transmission in a PUSCH duration equal to the PUSCH duration of a fixed size and receiving a second CG uplink transmission in a PUSCH duration less than the PUSCH duration of a fixed size; and receiving at least one first CG uplink transmission in a PUSCH duration equal to the PUSCH duration of a fixed size and receiving a third CG uplink transmission in a PUSCH duration greater than the PUSCH duration of a fixed size.

[0261] In some embodiments related to the third example, the CG uplink transmission within a PUSCH duration that is smaller than a fixed-size PUSCH duration is located within the first PUSCH duration or the last PUSCH duration in the first CG transmission resource including a successful LBT process.

[0262] In some embodiments related to the third example, a CG uplink transmission larger than a fixed-size PUSCH duration is located within the first PUSCH duration or the last PUSCH duration in the first CG transmission resource including a successful LBT process.

[0263] In some embodiments related to the third example, the method also includes: the network device sends the following indication: a PUSCH duration greater than a fixed-size PUSCH duration or a PUSCH duration less than a fixed-size PUSCH duration is the first PUSCH duration in the first CG transmission resource; or, a PUSCH duration greater than a fixed-size PUSCH duration or a PUSCH duration less than a fixed-size PUSCH duration is the last PUSCH duration in the first CG transmission resource.

[0264] In some embodiments related to the third example, the method further includes: the network device sends the following indication: one of the PUSCH durations is greater than a fixed-size PUSCH duration; or one of the PUSCH durations is less than a fixed-size PUSCH duration.

[0265] In some embodiments related to the third example, the method further includes: sending an indication of a starting OFDM symbol in a CG transmission resource, wherein the indication indicates a starting OFDM symbol for a first CG uplink transmission within a first PUSCH duration.

[0266] In some embodiments related to the third example, if S is not equal to 0, the value of S is applied only to the first CG transmission resource among multiple configured CG transmission resources, or only to the first CG transmission resource, where the LBT process has successfully accessed the first CG transmission resource.

[0267] In some embodiments related to the third example, when multiple PUSCH durations are configured in a CG transmission resource, the starting OFDM symbol is one of the following: the first OFDM symbol in the CG transmission resource; symbols ,L) defined OFDM symbol, where N symbols = is equal to the number of OFDM symbols in the first cycle, L is the number of OFDM symbols defined in the CG uplink transmission time domain resource duration; and m*L+mod(N symbols ,L) defined OFDM symbol, where m = 0, 1 to n–1.

[0268] In some embodiments related to the third example, the method also includes: in the second CG transmission resource and subsequent CG transmission resources, configuring the PUSCH duration in the same configuration as the first CG transmission resource.

[0269] In some embodiments related to the third example, the method also includes: in the second CG transmission resource and subsequent CG transmission resources, when S is not equal to 0, configuring the PUSCH duration in a predefined configuration different from the configuration of the first CG transmission resource.

[0270] In some embodiments related to the third example, when multiple CG uplink transmissions are received within the corresponding PUSCH duration in the CG transmission resource, the starting OFDM symbol is one of the following: the first OFDM symbol in the CG transmission resource including the successful LBT process; the first OFDM symbol in the CG transmission resource including the successful LBT process consisting of mod(N symbols ,L) defined OFDM symbol, where N symbols = is equal to the number of OFDM symbols in the first cycle, L is the number of OFDM symbols defined in the CG uplink transmission time domain resource duration; and m*L+mod(N symbols ,L) defined OFDM symbol, where m = 0, 1 to n–1.

[0271] In some embodiments related to the third example, the method also includes: receiving the CG uplink transmission in a predefined configuration different from the configuration of the first CG transmission resource in a second CG transmission resource and subsequent CG transmission resources after the CG uplink transmission is successful in the first CG transmission resource.

[0272] In some embodiments related to the third example, a predefined configuration different from the configuration of the first CG transmission resources includes a CG uplink transmission within a PUSCH duration occupying the entire cycle.

[0273] In some embodiments related to the third example, the method also includes: receiving the CG uplink transmission in a second CG transmission resource and subsequent CG transmission resources after the CG uplink transmission is successful in the first CG transmission resource in the same configuration as the configuration of the first CG transmission resource.

[0274] In some embodiments related to the third example, the fixed-size PUSCH duration portion is defined by a PUSCH duration that is smaller than the fixed-size PUSCH duration, which PUSCH duration that is smaller than the fixed-size PUSCH duration must be greater than or equal to a minimum number of OFDM symbols.

[0275] In some embodiments related to the third example, the method also includes: sending a larger modulation and coding scheme (MCS) value to send a CG uplink transmission within a PUSCH duration that is less than a fixed-size PUSCH duration.

[0276] In some embodiments related to the third example, the method also includes: sending a smaller MCS value to send a CG uplink transmission within a PUSCH duration that is greater than a fixed size.

[0277] In some embodiments related to the third example, the method also includes: sending an MCS value to send a CG uplink transmission within a fixed-size PUSCH duration, within a PUSCH duration that is less than the fixed-size PUSCH duration, or within a PUSCH duration that is greater than the fixed-size PUSCH duration.

[0278] In some embodiments, the method further includes: sending the MCS value in a radio resource control (RRC) message or downlink control information (DCI).

[0279] In a fourth example of the present application, a network side device is provided, the network side device includes a processor and a computer readable medium. The computer readable medium stores computer executable instructions, and when the processor executes the computer executable instructions, the above method is executed.

[0280] The above embodiments are merely examples. Those skilled in the art may make changes, modifications, and variations to the specific embodiments. The scope of the claims should not be limited by the specific embodiments set forth herein, but should be interpreted as a whole in a manner consistent with the specification.

Claims

1. A method for a user equipment UE to perform uplink transmission using a configuration authorization CG in an unlicensed spectrum, characterized in that: The method comprises: The UE receives CG resource configuration information including time domain resource configuration information from a network device to configure the UE to perform multiple CG continuous physical uplink shared channel PUSCH allocations in a time slot of the CG time resource, wherein the time domain resource configuration information includes a starting symbol and a fixed length indication of a first PUSCH allocation in the time slot of the CG time resource; The time domain resource configuration information defines multiple access opportunities for the UE to start CG uplink transmission within the CG time resource, and each access opportunity starts from the start symbol of the corresponding PUSCH allocated by the multiple CG continuous PUSCHs; Starting the CG uplink transmission at a first access opportunity, wherein a listen-before-talk (LBT) channel access procedure is successful before the first access opportunity; and According to the CG continuous PUSCH allocation, CG continuous PUSCH is sent at the remaining access opportunities.

2. The method according to claim 1, characterized in that The UE is configured with K repetitions, the number of which is greater than 1, and the UE repeatedly transmits a transmission block TB in K earliest consecutive transmission opportunity candidates within the same configuration.

3. The method according to claim 1, characterized in that: For multiple CG continuous PUSCH allocations within a time slot, the first PUSCH allocation follows the configured start and length indicator value SLIV parameters, and the remaining PUSCH allocations have the same length and PUSCH mapping type and are appended to the previous allocation without gaps.

4. The method according to claim 3, characterized in that The same combination of starting symbol, length and PUSCH mapping type is repeated on consecutively allocated slots.

5. The method according to any one of claims 1 to 4, characterized in that The method also includes configuring multiple PUSCH allocations in the time slot of the CG time resource based on the fixed length of the first PUSCH allocation and the number of multiple orthogonal frequency division multiplexing OFDM symbols available for CG uplink transmission in the first time slot of the CG time resource.

6. The method according to claim 5, characterized in that The configuring of multiple PUSCH allocations comprises at least one of the following steps: configuring at least one PUSCH allocation equal to a fixed length of the first PUSCH allocation; configuring at least one PUSCH allocation equal to a fixed length of the first PUSCH allocation and one PUSCH allocation less than a fixed length of the first PUSCH allocation; At least one PUSCH allocation equal to a fixed length of the first PUSCH allocation and one PUSCH allocation greater than a fixed length of the first PUSCH allocation are configured.

7. The method according to any one of claims 1 to 4, characterized in that The UE receiving the CG resource configuration information including the time domain resource configuration information from the network device includes receiving the CG resource configuration information in the following content: Radio Resource Control (RRC) messages, or A combination of RRC message and downlink control information DCI.

8. A device, characterized in that: The device comprises: processor; A computer-readable medium storing computer-executable instructions, wherein when the processor executes the computer-executable instructions, the device: Receiving configuration authorization CG resource configuration information including time domain resource configuration information from a network device to configure the device to perform multiple CG continuous physical uplink shared channel PUSCH allocations in a time slot of the CG time resource, wherein the time domain resource configuration information includes a starting symbol and a fixed length indication of a first PUSCH allocation in the time slot of the CG time resource; The time domain resource configuration information defines a plurality of access opportunities for the device to start CG uplink transmission within the CG time resource, and each access opportunity starts from a start symbol of a corresponding PUSCH allocated by the plurality of CG continuous PUSCHs; Starting the CG uplink transmission at a first access opportunity, wherein a listen-before-talk (LBT) channel access procedure is successful before the first access opportunity; and According to the CG continuous PUSCH allocation, CG continuous PUSCH is sent at the remaining access opportunities.

9. The device according to claim 8, characterized in that The apparatus is configured with K repetitions, the number of which is greater than 1, and the apparatus repeatedly transmits a transmission block TB in K earliest consecutive transmission opportunity candidates within the same configuration.

10. The device according to claim 8, characterized in that For multiple CG continuous PUSCH allocations within the time slot, the first PUSCH allocation follows the configured start and length indicator value SLIV parameters, and the remaining PUSCH allocations have the same length and PUSCH mapping type and are attached to the previous allocation without gaps.

11. The device according to claim 10, characterized in that The same combination of starting symbol, length and PUSCH mapping type is repeated on consecutively allocated slots.

12. The device according to any one of claims 8 to 11, characterized in that When the processor executes the computer-executable instructions, it also causes the device to: configure multiple PUSCH allocations in the CG time resource based on the fixed length of the first PUSCH allocation and the number of multiple orthogonal frequency division multiplexing OFDM symbols available for CG uplink transmission in the first time slot of the CG time resource.

13. The device according to claim 12, characterized in that The configuring of multiple PUSCH allocations comprises at least one of the following steps: configuring at least one PUSCH allocation equal to a fixed length of the first PUSCH allocation; configuring at least one PUSCH allocation equal to a fixed length of the first PUSCH allocation and one PUSCH allocation less than a fixed length of the first PUSCH allocation; At least one PUSCH allocation equal to a fixed length of the first PUSCH allocation and one PUSCH allocation greater than a fixed length of the first PUSCH allocation are configured.

14. The device according to any one of claims 8 to 11, characterized in that The receiving of CG resource configuration information including time domain resource configuration information includes receiving the CG resource configuration information in the following content: Radio Resource Control (RRC) messages, or A combination of RRC message and downlink control information DCI.

15. A method used in a network device, characterized in that: The method comprises: The network device sends configuration authorization CG resource configuration information including time domain resource configuration information to the user equipment UE to configure the UE to perform multiple CG continuous physical uplink shared channel PUSCH allocations in a time slot of the CG time resource, wherein the time domain resource configuration information includes a starting symbol and a fixed length indication of the first PUSCH allocation in the time slot of the CG time resource; The time domain resource configuration information defines multiple access opportunities for the UE to start CG uplink transmission within the CG time resource, and each access opportunity starts from the start symbol of the corresponding PUSCH allocated by the multiple CG continuous PUSCHs; receiving the CG uplink transmission at a first access opportunity, wherein a listen-before-talk (LBT) channel access procedure is successful before the first access opportunity; and According to the CG continuous PUSCH allocation, the CG continuous PUSCH is received at the remaining access opportunities.

16. The method according to claim 15, characterized in that The CG resource configuration information used to configure the UE includes K repetitions greater than 1, so that the UE repeatedly transmits the block TB among the K earliest consecutive transmission opportunity candidates within the same configuration.

17. The method according to claim 15, characterized in that For multiple CG continuous PUSCH allocations within the time slot, the first PUSCH allocation follows the configured start and length indicator value SLIV parameters, and the remaining PUSCH allocations have the same length and PUSCH mapping type and are attached to the previous allocation without gaps.

18. The method according to claim 17, characterized in that The same combination of starting symbol, length and PUSCH mapping type is repeated on consecutively allocated slots.

19. The method according to any one of claims 15 to 18, characterized in that The CG resource configuration information used to configure the UE includes information for configuring multiple PUSCH allocations in the CG time resource based on the fixed length of the first PUSCH allocation and the number of multiple orthogonal frequency division multiplexing OFDM symbols available for CG uplink transmission in the first time slot of the CG time resource.

20. The method according to claim 19, characterized in that The CG resource configuration information for configuring the UE includes information for configuring the plurality of PUSCH allocations by at least one of the following steps: configuring at least one PUSCH allocation equal to a fixed length of the first PUSCH allocation; configuring at least one PUSCH allocation equal to a fixed length of the first PUSCH allocation and one PUSCH allocation less than a fixed length of the first PUSCH allocation; At least one PUSCH allocation equal to a fixed length of the first PUSCH allocation and one PUSCH allocation greater than a fixed length of the first PUSCH allocation are configured.

21. The method according to any one of claims 15 to 18, characterized in that The network device sending the CG resource configuration information including the time domain resource configuration information to the UE includes sending the CG resource configuration information in the following content: Radio Resource Control (RRC) messages, or A combination of RRC message and downlink control information DCI.

22. A device, characterized in that: The device comprises: processor; A computer-readable medium storing computer-executable instructions, wherein when the processor executes the computer-executable instructions, the device: Sending configuration authorization CG resource configuration information including time domain resource configuration information to a user equipment UE to configure the UE to perform multiple CG continuous physical uplink shared channel PUSCH allocations in one time slot of the CG time resource, wherein the time domain resource configuration information includes a starting symbol and a fixed length indication of a first PUSCH allocation in the time slot of the CG time resource; The time domain resource configuration information defines multiple access opportunities for the UE to start CG uplink transmission within the CG time resource, and each access opportunity starts from the start symbol of the corresponding PUSCH allocated by the multiple CG continuous PUSCHs; receiving the CG uplink transmission at a first access opportunity, wherein a listen-before-talk (LBT) channel access procedure is successful before the first access opportunity; and According to the CG continuous PUSCH allocation, the CG continuous PUSCH is received at the remaining access opportunities.

23. The device according to claim 22, characterized in that The CG resource configuration information used to configure the UE includes K repetitions greater than 1, so that the UE repeatedly transmits the block TB among the K earliest consecutive transmission opportunity candidates within the same configuration.

24. The device according to claim 22, characterized in that For multiple CG continuous PUSCH allocations within a time slot, the first PUSCH allocation follows the configured start and length indicator value SLIV parameters, and the remaining PUSCH allocations have the same length and PUSCH mapping type and are appended to the previous allocation without gaps.

25. The apparatus according to any one of claims 22 to 24, wherein the same combination of starting symbol, length and PUSCH mapping type is repeated over consecutively allocated time slots.

26. The device according to any one of claims 22 to 24, characterized in that The CG resource configuration information used to configure the UE includes information for configuring multiple PUSCH allocations in the CG time resource based on the fixed length of the first PUSCH allocation and the number of multiple orthogonal frequency division multiplexing OFDM symbols available for CG uplink transmission in the first time slot of the CG time resource.

27. The device according to claim 26, characterized in that The CG resource configuration information for configuring the UE includes information for configuring the plurality of PUSCH allocations by at least one of the following steps: configuring at least one PUSCH allocation equal to a fixed length of the first PUSCH allocation; configuring at least one PUSCH allocation equal to a fixed length of the first PUSCH allocation and one PUSCH allocation less than a fixed length of the first PUSCH allocation; At least one PUSCH allocation equal to a fixed length of the first PUSCH allocation and one PUSCH allocation greater than a fixed length of the first PUSCH allocation are configured.

28. The device according to any one of claims 22 to 24, characterized in that The sending of CG resource configuration information including time domain resource configuration information to the UE includes sending the CG resource configuration information in the following content: Radio Resource Control (RRC) messages, or A combination of RRC message and downlink control information DCI.

Images