Autonomous uplink transmission techniques using shared radio frequency spectrum

Abstract

Autonomous uplink transmission technology using shared radio frequency spectrum is provided. The User Equipment (UE) can determine the duration of AUL transmission and modify the uplink waveform or provide the base station with indications of one or more channel resources available for base station transmission, to more fully utilize the shared RF spectrum resources during the Maximum Channel Occupancy Time (MCOT). The base station can activate or deactivate AUL transmission by transmitting downlink control information (DCI) to the UE. The UE and base station can exchange various other control information to provide relatively efficient autonomous uplink transmission and utilization of the shared RF spectrum resources.

Description

[0001] This application is a divisional application of the patent application filed on February 5, 2018, with international application number PCT / US2018 / 016807, Chinese application number 201880010061.2, and entitled "Autonomous Uplink Transmission Technology Using Shared Radio Frequency Spectrum".

[0002] Cross-referencing

[0003] This patent application claims priority to U.S. Patent Application No. 15 / 887,277, filed February 2, 2018, entitled "Autonomous Uplink Transmission Techniques Using Shared Radio Frequency Spectrum," and U.S. Provisional Patent Application No. 62 / 455,469, filed February 6, 2017, entitled "Autonomous Uplink Transmission Techniques Using Shared Radio Frequency Spectrum," by Yerramalli et al.; each of these applications is assigned to the assignee of this application. Background Technology

[0004] The following text generally refers to wireless communication, and in particular to autonomous uplink transmission technologies using shared radio frequency spectrum.

[0005] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, message sending and receiving, broadcasting, and so on. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, and Orthogonal Frequency Division Multiple Access (OFDMA) systems (e.g., Long Term Evolution (LTE) systems, or New Radio (NR) systems). A wireless multiple access communication system may include several base stations or access network nodes, each supporting communication from multiple communication devices simultaneously, which may also be referred to as User Equipment (UE).

[0006] Some wireless systems enable communication between a base station and a UE on shared or unlicensed radio spectrum bands, or on different radio spectrum bands (e.g., licensed and unlicensed radio spectrum bands). When using shared or unlicensed radio spectrum bands, the transmitting party (e.g., UE, base station, or other network access device) can enforce contention-based channel access according to contention-based rules (e.g., by enforcing a Listen-Before-Speak (LBT) procedure), which provides fair channel access to transmitting parties wishing to use shared radio spectrum bands.

[0007] In some scenarios, the base station can schedule the UE for uplink communication through resource allocation or authorization. In other scenarios, the base station can configure the UE to autonomously transmit uplink communication based on an autonomous uplink configuration. In such scenarios, the base station may be unaware of the specific timing of the uplink transmission due to the autonomous nature of such transmissions and due to contention-based access to the shared RF band.

[0008] Overview

[0009] The described technology relates to improved methods, systems, devices, or apparatuses for supporting autonomous uplink transmissions using shared radio frequency spectrum. Generally, the described technology provides efficient coordination of autonomous uplink transmissions and various associated downlink transmissions. For example, a user equipment (UE) may have data to be transmitted according to an autonomous uplink configuration and may determine the duration of associated uplink transmissions. The UE may modify uplink waveforms or provide the base station with indications of one or more channel resources available for base station transmission to make fuller use of shared radio spectrum resources during the Maximum Channel Occupancy Time (MCOT). In some cases, the base station may configure the UE to perform autonomous uplink transmissions and may activate or deactivate autonomous uplink transmissions based on various factors (e.g., channel conditions, traffic at the base station, etc.) via downlink control information transmitted to the UE. In some cases, the UE and the base station may exchange various control information to provide relatively efficient autonomous uplink transmissions and use of shared radio spectrum resources.

[0010] A method for wireless communication is described. The method may include: contending for access to a channel in a shared RF band based on an autonomous uplink configuration indicating a transmission window available for autonomous uplink transmission; determining one or more channel access parameters based at least in part on one or more of the duration of an uplink transmission to be transmitted on the channel in the shared RF band or the TA (Transmission Aspect Ratio) used for the uplink transmission; and transmitting the uplink transmission on the channel in the shared RF band according to the autonomous uplink configuration, wherein the uplink transmission indicates one or more of the channel access parameters.

[0011] An apparatus for wireless communication is described. The apparatus may include: means for contending for access to a channel in a shared RF band based on an autonomous uplink configuration indicating a transmission window available for autonomous uplink transmission; means for determining one or more channel access parameters based at least in part on one or more of the duration of an uplink transmission to be transmitted on the channel in the shared RF band or the TA for the uplink transmission; and means for transmitting an uplink transmission on the channel in the shared RF band according to the autonomous uplink configuration, wherein the uplink transmission indicates one or more of the channel access parameters.

[0012] Another apparatus for wireless communication is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. These instructions are operable to cause the processor to: contend for access to a channel in a shared RF band according to an autonomous uplink configuration indicating a transmission window available for autonomous uplink transmission; determine one or more channel access parameters based at least in part on one or more of the duration of an uplink transmission to be transmitted on the channel in the shared RF band or the TA (Transmission Time Accompaniment) for the uplink transmission; and transmit an uplink transmission on the channel in the shared RF band according to the autonomous uplink configuration, wherein the uplink transmission indicates one or more of the channel access parameters.

[0013] A non-transient computer-readable medium for wireless communication is described. The non-transient computer-readable medium may include instructions operable to cause a processor to perform the following operations: contend for access to a channel in a shared RF band based on an autonomous uplink configuration indicating a transmission window available for autonomous uplink transmission; determine one or more channel access parameters based at least in part on one or more of the duration of an uplink transmission to be transmitted on the channel in the shared RF band or the TA for the uplink transmission; and transmit the uplink transmission on the channel in the shared RF band according to the autonomous uplink configuration, wherein the uplink transmission indicates one or more of the channel access parameters.

[0014] In some examples of the methods, apparatuses, and non-transient computer-readable media described above, the maximum channel occupancy time (MCOT) for uplink transmission can be identified, and the difference between the MCOT and the duration of the uplink transmission can be determined and indicated within the uplink transmission. In some examples of the methods, apparatuses, and non-transient computer-readable media described above, the difference between the MCOT and the duration of the uplink transmission can be indicated in the channel access parameters as the number of subframes available to one or more other transmitters.

[0015] Some examples of the methods, apparatuses, and non-transient computer-readable media described above may further include processes, features, means, or instructions for modifying the waveform of an uplink transmission, at least in part, based on the TA. In some examples of the methods, apparatuses, and non-transient computer-readable media described above, waveform modification may include: formatting data to be transmitted into an uplink transmission; identifying the timing for the commencement of a subsequent downlink transmission after the uplink transmission and the maximum time gap between the uplink transmission and the subsequent downlink transmission; determining the difference between the maximum time gap and the TA; and the duration of the last symbol of the punctured uplink transmission reaching the difference between the maximum time gap and the TA.

[0016] In some examples of the methods, apparatus, and non-transient computer-readable media described above, modifying the waveform may include: formatting the data to be transmitted into an uplink transmission; identifying the timing for the start of a subsequent downlink transmission after the uplink transmission and the maximum time gap between the uplink transmission and the subsequent downlink transmission; determining the time difference between the end of the last symbol of the uplink transmission and the maximum time gap; and cyclically extending the sample of the last symbol of the uplink transmission to extend the duration to the difference between the maximum time gap and the time interval (TA).

[0017] In some examples of the methods, apparatus, and non-transient computer-readable media described above, the one or more channel access parameters may be determined by: determining that the TA exceeds the maximum time gap between an uplink transmission and a subsequent downlink transmission; and instructing the TA during an uplink transmission to allow another transmitter to transmit a reserved signal up to at least a portion of the TA.

[0018] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described above may further include processes, features, means, or instructions for identifying uplink control information (UCI) associated with an uplink transmission; and transmitting the UCI in the symbols of the uplink transmission before the last symbol of the uplink transmission.

[0019] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described above may further include processes, features, means, or instructions for: identifying the time at which a subsequent downlink transmission begins after an uplink transmission; and formatting an uplink transmission to occupy a channel in a shared RF band until the time at which a subsequent downlink transmission begins, wherein the transmitter of the subsequent downlink transmission performs CCA to occupy the maximum time gap between the uplink transmission and the subsequent downlink transmission.

[0020] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described above may further include processes, features, means, or instructions for transmitting to a base station the time difference between the duration of MCOT and uplink transmission, wherein the base station may transmit one or more transmissions during the time difference, and one or more other transmitters may be blocked from transmitting during the time difference.

[0021] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described above may further include processes, features, means, or instructions for: determining that additional data may be transmitted after a transmission window; and transmitting one or more subsequent uplink transmissions outside the transmission window after an uplink transmission, when the MCOT can be determined as part of access to a channel sharing a RF band.

[0022] In some examples of the methods, apparatus, and non-transient computer-readable media described above, the first subframe of the first subsequent uplink transmission in the one or more subsequent uplink transmissions includes control channel information that provides information about the one or more subsequent uplink transmissions.

[0023] A method for wireless communication is described. The method may include: receiving RRC signaling including an autonomous uplink configuration for unscheduled autonomous uplink transmissions in a shared RF band; receiving DCI activating the autonomous uplink transmissions; contending for access to a channel in the shared RF band according to the autonomous uplink configuration; and transmitting one or more autonomous uplink transmissions on the channel in the shared RF band according to the autonomous uplink configuration.

[0024] An apparatus for wireless communication is described. The apparatus may include: means for receiving RRC signaling including an autonomous uplink configuration for unscheduled autonomous uplink transmission in a shared RF band; means for receiving DCI activating the autonomous uplink transmission; means for contending for access to a channel in the shared RF band according to the autonomous uplink configuration; and means for transmitting one or more autonomous uplink transmissions on a channel in the shared RF band according to the autonomous uplink configuration.

[0025] Another apparatus for wireless communication is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. These instructions are operable to cause the processor to: receive RRC signaling including an autonomous uplink configuration for unscheduled autonomous uplink transmissions in a shared RF band; receive DCI activating autonomous uplink transmissions; contend for access to a channel in the shared RF band according to the autonomous uplink configuration; and transmit one or more autonomous uplink transmissions on a channel in the shared RF band according to the autonomous uplink configuration.

[0026] A non-transient computer-readable medium for wireless communication is described. The non-transient computer-readable medium may include instructions operable to cause a processor to perform the following operations: receiving RRC signaling including an autonomous uplink configuration for unscheduled autonomous uplink transmissions in a shared RF band; receiving DCI activating the autonomous uplink transmission; contending for access to a channel in the shared RF band according to the autonomous uplink configuration; and transmitting one or more autonomous uplink transmissions on a channel in the shared RF band according to the autonomous uplink configuration.

[0027] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described above may further include processes, features, devices, or instructions for: receiving a subsequent DCI that disables autonomous uplink transmission; and interrupting contention for access to a channel in a shared RF band in response to receiving a subsequent DCI that disables autonomous uplink transmission.

[0028] In some examples of the methods, apparatus, and non-transient computer-readable media described above, the DCI includes a CRC field scrambled with an identifier, the value of which indicates that the DCI is associated with an autonomous uplink transmission.

[0029] In some examples of the methods, apparatus, and non-transient computer-readable media described above, autonomous uplink configuration enables autonomous uplink transmission on one or more transmit antennas based on MIMO configuration.

[0030] A method for wireless communication is described. The method may include: identifying an autonomous uplink configuration for unscheduled uplink transmission in a shared RF band; contending for access to a channel in the shared RF band based on the autonomous uplink configuration; determining uplink control information and uplink shared channel information for uplink transmission to be transmitted on the channel in the shared RF band; performing rate matching of the uplink shared channel information around the uplink control information in the uplink transmission; and transmitting the uplink transmission on the channel in the shared RF band based on the autonomous uplink configuration.

[0031] An apparatus for wireless communication is described. The apparatus may include: means for identifying an autonomous uplink configuration for unscheduled uplink transmission in a shared RF band; means for contending for access to a channel in the shared RF band based on the autonomous uplink configuration; means for determining uplink control information and uplink shared channel information for uplink transmission to be transmitted on a channel in the shared RF band; means for rate matching the uplink shared channel information around the uplink control information in the uplink transmission; and means for transmitting the uplink transmission on a channel in the shared RF band based on the autonomous uplink configuration.

[0032] Another apparatus for wireless communication is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. These instructions are operable to cause the processor to: identify an autonomous uplink configuration for unscheduled uplink transmission in a shared RF band; contend for access to a channel in the shared RF band according to the autonomous uplink configuration; determine uplink control information and uplink shared channel information for uplink transmission to be transmitted on a channel in the shared RF band; perform rate matching of the uplink shared channel information around the uplink control information in the uplink transmission; and transmit the uplink transmission on a channel in the shared RF band according to the autonomous uplink configuration.

[0033] A non-transient computer-readable medium for wireless communication is described. The non-transient computer-readable medium may include instructions operable to cause a processor to perform the following operations: identifying an autonomous uplink configuration for unscheduled uplink transmission in a shared RF band; contending for access to a channel in the shared RF band according to the autonomous uplink configuration; determining uplink control information and uplink shared channel information for an uplink transmission to be transmitted on a channel in the shared RF band; rate matching the uplink shared channel information around the uplink control information in the uplink transmission; and transmitting the uplink transmission on a channel in the shared RF band according to the autonomous uplink configuration.

[0034] In some examples of the methods, apparatus, and non-transient computer-readable media described above, resources for uplink control information and rate matching of shared channel information can be configured in an autonomous uplink configuration.

[0035] In some examples of the methods, apparatus, and non-transient computer-readable media described above, the payload size of the uplink control information can be a fixed size configured in an autonomous uplink configuration. In some examples of the methods, apparatus, and non-transient computer-readable media described above, the payload size can be independent of the number of subframes transmitted in the uplink.

[0036] In some examples of the methods, apparatuses, and non-transient computer-readable media described above, uplink control information includes one or more of the following: HARQ identifier, uplink transmission burst length, MCOT, RV indication, NDI, or UE identifier. In some examples of the methods, apparatuses, and non-transient computer-readable media described above, uplink control information includes the time difference between the maximum channel occupancy time (MCOT) and the duration of the uplink transmission burst length.

[0037] A method for wireless communication is described. The method may include: identifying an autonomous uplink configuration for unscheduled uplink transmissions in a shared RF band; receiving an A-DCI associated with one or more autonomous uplink transmissions; and transmitting the autonomous uplink transmissions in the shared RF band according to the autonomous uplink configuration and the A-DCI.

[0038] An apparatus for wireless communication is described. The apparatus may include: means for identifying an autonomous uplink configuration for unscheduled uplink transmission in a shared RF band; means for receiving an A-DCI associated with one or more autonomous uplink transmissions; and means for transmitting the autonomous uplink transmission in the shared RF band according to the autonomous uplink configuration and the A-DCI.

[0039] Another apparatus for wireless communication is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. These instructions are operable to cause the processor to: identify an autonomous uplink configuration for unscheduled uplink transmissions in a shared RF band; receive an A-DCI associated with one or more autonomous uplink transmissions; and transmit the autonomous uplink transmissions in the shared RF band according to the autonomous uplink configuration and the A-DCI.

[0040] A non-transient computer-readable medium for wireless communication is described. The non-transient computer-readable medium may include instructions operable to cause a processor to perform the following operations: identifying an autonomous uplink configuration for unscheduled uplink transmissions in a shared RF band; receiving an A-DCI associated with one or more autonomous uplink transmissions; and transmitting the autonomous uplink transmissions in the shared RF band according to the autonomous uplink configuration and the A-DCI.

[0041] In some examples of the methods, apparatuses, and non-transient computer-readable media described above, A-DCI includes a bit mapping of feedback information associated with one or more feedback procedures related to one or more autonomous uplink transmissions. In some examples of the methods, apparatuses, and non-transient computer-readable media described above, the feedback information includes one or more ACK / NACK indications for one or more HARQ procedures. In some examples of the methods, apparatuses, and non-transient computer-readable media described above, bits from two or more feedback procedures may be bundled.

[0042] In some examples of the methods, apparatuses, and non-transient computer-readable media described above, the A-DCI may include uplink power control information for one or more autonomous uplink transmissions. In some examples, the Media Access Control (MAC) element (CE) may include uplink power control information for one or more autonomous uplink transmissions and may be transmitted over a shared channel transmission. In some examples of the methods, apparatuses, and non-transient computer-readable media described above, the MAC-CE includes a CQI or MCS indicator and may transmit confirmation that the CQI or MCS has been successfully received. Brief description of the attached diagram

[0043] Figure 1 Examples of wireless communication systems that support autonomous uplink transmission technologies using shared radio frequency spectrum, according to various aspects of this disclosure, are explained.

[0044] Figure 2 Examples of wireless communication systems that support autonomous uplink transmission technologies using shared radio frequency spectrum, according to various aspects of this disclosure, are explained.

[0045] Figure 3 Examples of shared channel resources supporting autonomous uplink transmission technologies using shared radio frequency spectrum, according to various aspects of this disclosure, are explained.

[0046] Figure 4 An example of the process flow supporting autonomous uplink transmission technology using shared radio frequency spectrum according to various aspects of this disclosure is explained.

[0047] Figure 5 An example of another process flow supporting autonomous uplink transmission technology using shared radio frequency spectrum, according to various aspects of this disclosure, is explained.

[0048] Figure 6 An example of another process flow supporting autonomous uplink transmission technology using shared radio frequency spectrum, according to various aspects of this disclosure, is explained.

[0049] Figure 7 An example of another process flow supporting autonomous uplink transmission technology using shared radio frequency spectrum, according to various aspects of this disclosure, is explained.

[0050] Figures 8 to 10 A block diagram of an apparatus supporting autonomous uplink transmission technology using shared radio frequency spectrum is shown according to various aspects of this disclosure.

[0051] Figure 11 A block diagram of a system for user equipment (UE) that supports autonomous uplink transmission technology using shared radio frequency spectrum is described according to various aspects of this disclosure.

[0052] Figures 12 to 14 A block diagram of an apparatus supporting autonomous uplink transmission technology using shared radio frequency spectrum is shown according to various aspects of this disclosure.

[0053] Figure 15 A block diagram of a system for a base station that supports autonomous uplink transmission technology using shared radio frequency spectrum, according to various aspects of this disclosure, is explained.

[0054] Figures 16 to 25 Methods for autonomous uplink transmission using shared radio frequency spectrum according to various aspects of this disclosure are explained. Detailed description

[0055] The described technology relates to improved methods, systems, devices, or apparatuses for supporting autonomous uplink transmissions using shared or unlicensed radio frequency spectrum. Generally, the described technology provides efficient coordination of autonomous uplink transmissions and associated downlink transmissions through various signals, control information, waveform modifications, or combinations thereof.

[0056] In some examples, unlicensed radio spectrum bands may be used for Long Term Evolution (LTE) or LTE-Advanced (LTE-A) communications. Unlicensed radio spectrum may be used in combination with dedicated or licensed radio spectrum bands or independently. Dedicated radio spectrum bands may include those licensed to specific users for specific purposes. Unlicensed or shared radio spectrum bands may include those available for Wi-Fi use, those available for use with different radio access technologies, or those available for use by multiple mobile network operators (MNOs) in an equal-sharing or priority-based manner. The terms unlicensed radio spectrum and shared radio spectrum are used interchangeably herein.

[0057] Wireless communication systems supporting autonomous uplink coordination using shared radio frequency spectrum can use the Listen-Before-Speak (LBT) protocol to resolve user equipment (UE) ambiguity and mitigate potential conflicts in scenarios where unscheduled and scheduled wireless systems (such as MuLTEfile systems) coexist. In an LBT protocol configured according to autonomous uplink transmission, the UE can monitor the medium for a defined time period to detect activity from other UEs within other cells. If the UE does not detect any activity during the LBT protocol (e.g., unobstructed channel assessment), it can transmit a busy signal until the next subframe and can transmit multiplexed ground with the Autonomous Physical Uplink Control Channel (A-PUCCH) or begin transmitting uplink data immediately after the A-PUCCH transmission (e.g., using the Physical Uplink Shared Channel (PUSCH)).

[0058] In some examples, the UE may have data to transmit according to an Autonomous Uplink (AUL) configuration and may determine the duration of associated uplink transmissions. While performing channel contention and gaining access to the shared RF band, the UE may modify the uplink waveform or provide the base station with indications of one or more channel resources available for base station transmission to make fuller use of the shared RF band resources within the Maximum Channel Occupancy Time (MCOT). In some cases, the base station may configure the UE to perform AUL transmissions and may activate or deactivate AUL transmissions based on various factors (e.g., channel conditions, traffic at the base station, etc.) via downlink control information (DCI) transmitted to the UE. In some examples, the cyclic redundancy check (CRC) of the DCI may be scrambled with an identifier indicating whether AUL transmissions are activated or deactivated at the UE. In some cases, the UE and base station may exchange various other control information to provide relatively efficient autonomous uplink transmissions and use of shared RF band resources, as discussed herein.

[0059] The aspects of this disclosure are initially described in the context of wireless communication systems. Further examples of AUL configurations and timelines are then provided. The aspects of this disclosure are further illustrated and described by means of and reference to apparatus diagrams, system diagrams, and flowcharts relating to autonomous uplink transmission technologies using shared radio frequency spectrum.

[0060] Figure 1Examples of wireless communication system 100 according to various aspects of this disclosure are described. Wireless communication system 100 includes base station 105, UE 115, and core network 130. In some examples, wireless communication system 100 may be an LTE (or Advanced LTE) network or a New Radio (NR) network. In some cases, wireless communication system 100 may support enhanced broadband communication, ultra-reliable (i.e., mission-critical) communication, low latency communication, and communication with low-cost and low-complexity devices. Wireless communication system 100 may be an example of a system supporting autonomous uplink transmissions performed by UE 115.

[0061] Base station 105 can wirelessly communicate with UE 115 via one or more base station antennas. Each base station 105 can provide communication coverage for a corresponding geographic coverage area 110. The communication link 125 shown in the wireless communication system 100 can include uplink (UL) transmission from UE 115 to base station 105 or downlink (DL) transmission from base station 105 to UE 115. Control information and data can be multiplexed on the uplink channel or downlink according to various technologies. Control information and data can be multiplexed on the downlink channel, for example, using time division multiplexing (TDM), frequency division multiplexing (FDM), or hybrid TDM-FDM technologies. In some examples, control information transmitted during the transmission time interval (TTI) of the downlink channel can be distributed in a cascaded manner between different control areas (e.g., between a shared control area and one or more control areas that vary depending on the UE).

[0062] Each UE 115 can be distributed throughout the wireless communication system 100, and each UE 115 can be stationary or mobile. UE 115 may also be referred to as a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. UE 115 can also be a cellular phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, tablet computer, laptop computer, cordless phone, personal electronic device, handheld device, personal computer, wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, machine-type communication (MTC) device, appliance, automobile, etc.

[0063] In some scenarios, UE 115 may also be able to communicate directly with other UEs (e.g., using peer-to-peer (P2P) or device-to-device (D2D) protocols). One or more UEs in a group of UEs 115 utilizing D2D communication may be within the coverage area 110 of the cell. Other UEs 115 in such a group may be outside the coverage area 110 of the cell or otherwise unable to receive transmissions from base station 105. In some scenarios, groups of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system, where each UE 115 transmits to every other UE 115 in the group. In some scenarios, base station 105 facilitates the scheduling of resources for D2D communication. In other scenarios, D2D communication is performed independently of base station 105.

[0064] Some UE 115 devices (such as MTC or IoT devices) can be low-cost or low-complexity devices and can provide automated communication between machines, i.e., machine-to-machine (M2M) communication. M2M or MTC can refer to data communication technologies that allow devices to communicate with each other or with a base station without human intervention. For example, M2M or MTC can refer to communication from devices that integrate sensors or meters to measure or capture information and relay that information to a central server or application, which can then utilize that information or present it to humans interacting with the program or application. Some UE 115 devices can be designed to collect information or automate machine behavior. Examples of applications for MTC devices include: smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wilderness survival monitoring, weather and geographic event monitoring, queue management and tracking, remote security sensing, physical access control, and transaction-based business charging.

[0065] In some scenarios, MTC devices can operate using half-duplex (one-way) communication at reduced peak rates. MTC devices can also be configured to enter a power-saving "deep sleep" mode when not engaged in active communication. In some cases, MTC or IoT devices can be designed to support mission-critical functions, and the wireless communication system can be configured to provide ultra-reliable communication for these functions.

[0066] Each base station 105 can communicate with the core network 130 and with each other. For example, base station 105 can interface with the core network 130 via backhaul link 132 (e.g., S1, etc.). Base stations 105 can communicate with each other directly or indirectly (e.g., via the core network 130) on backhaul link 134 (e.g., X2, etc.). Base station 105 can perform radio configuration and scheduling for communication with UE 115, or can operate under the control of a base station controller (not shown). In some examples, base station 105 can be a macrocell, a small cell, a hotspot, etc. Base station 105 may also be referred to as an evolved B-node (eNB) 105.

[0067] Various aspects of the wireless communication system 100 can be configured as a MuLTEFire network, and the access point (AP) can be configured as a MuLTEFire eNB or base station 105. The wireless communication system 100 may include aspects of LTE / LTE-A networks, Wi-Fi networks, MuLTEFire networks, neutral host small cell networks, etc., operating in overlapping coverage areas. The MuLTEFire network may include APs and / or base stations 105 communicating with UE 115 in unlicensed radio spectrum bands (e.g., without licensed frequency anchor carriers). For example, a MuLTEFire network can operate without anchor carriers in licensed radio frequency spectrum.

[0068] In some scenarios, UE 115 and base station 105 may operate in a shared radio spectrum band, which may include licensed RF spectrum, unlicensed RF spectrum, or a combination of licensed and unlicensed RF spectrum. For example, wireless communication system 100 may employ LTE Licensed Assisted Access (LTE-LAA) or LTE Unlicensed (LTE U) radio access technology or NR technology in an unlicensed band (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band). In the unlicensed frequency portion of the shared radio spectrum band, UE 115 or base station 105 may conventionally perform media sensing procedures to contend for access to the spectrum. For example, UE 115 or base station 105 may perform LBT procedures (such as Open Channel Assessment (CCA)) before communication to determine whether a shared channel is available. In some scenarios, AUL transmissions may follow LBT rules similar to those used for permission-based uplink transmissions, such as Category 4 LBT rules.

[0069] CCA may include an energy detection or energy sensing procedure to determine the presence of any other active transmissions. For example, each UE 115 may randomly select a backoff counter (with a possible specific duration or number of symbols) and listen to the channel containing the resource that UE 115 is contending for until the counter decrements to 0. If the counter reaches 0 for a particular UE 115 and no other transmissions are detected, then UE 115 may begin transmitting. If the counter does not reach 0 before another signal is detected, then UE 115 has lost contention for the resource and suppresses transmission.

[0070] In some examples, UE 115 can infer changes in the Received Signal Strength Indicator (RSSI) of the power meter to indicate that the channel is occupied. Specifically, signal power concentrated in a certain bandwidth and exceeding a predetermined noise floor can indicate another radio transmitter. CCA may also include the detection of a specific sequence indicating channel usage. For example, another device may transmit a specific preamble before transmitting a data sequence. In some cases, LBT procedures may include a radio node acting as a collision proxy adjusting its own backoff window based on the amount of energy detected on the channel and / or ACK / NACK feedback for its own transmitted packets.

[0071] Base station 105 can wirelessly communicate with UE 115 via one or more base station antennas. Each base station 105 can provide communication coverage for a corresponding geographic coverage area 110. The communication link 125 shown in the wireless communication system 100 can include uplink transmission from UE 115 to base station 105 or downlink transmission from base station 105 to UE 115. Each UE 115 can be distributed throughout the wireless communication system 100, and each UE 115 can be stationary or mobile. Although base station 105 can generally refer to various aspects of a wireless wide area network (WWAN), and AP can generally refer to various aspects of a WLAN, base station and AP can be used interchangeably. As discussed below, base station 105 can identify the status of UE 115 (e.g., the number of hidden nodes), and core network 130 can configure UE 115 accordingly via base station 105.

[0072] UE 115 and base station 105 may employ a hybrid Automatic Repeat Request (HARQ) feedback mechanism, which can be a method to ensure that data is correctly received on communication link 125. HARQ may include a combination of error detection (e.g., using Cyclic Redundancy Check (CRC)), forward error correction (FEC), and retransmission (e.g., Automatic Repeat Request (ARQ)). HARQ can improve the throughput of the Media Access Control (MAC) layer in poor radio conditions (e.g., signal-to-noise ratio conditions). In incremental redundant HARQ, incorrectly received data can be stored in a buffer and combined with subsequent transmissions to improve the overall probability of successfully decoding the data. In some cases, redundant bits (e.g., Redundant Version (RV) or New Data Indicator (NDI)) are added to the message before each transmission. This can be useful in adverse conditions. In other cases, redundant bits are not added to each transmission, but are retransmitted after the transmitter of the original message receives a Negative Acknowledgment (NACK) indicating a failed attempt to decode the information. The chain of transmission, acknowledgment, and retransmission may be referred to as a HARQ process. In some cases, a limited number of HARQ processes may be used for a given communication link 125.

[0073] In some examples, unscheduled PUSCH transmissions can utilize asynchronous HARQ procedures and certain retransmission options. For instance, UE 115 can send a retransmission upon receiving a NACK, where base station 105 can win contention for the medium to send a NACK feedback. Additionally or alternatively, retransmissions can be based on receiving a NACK or, if no ACK / NACK feedback is received, on a timer. In some cases, a timer can increase the chance of receiving a PUSCH.

[0074] Two-way communication can use Frequency Division Duplex (FDD) (e.g., using paired spectrum resources) or Time Division Duplex (TDD) operation (e.g., using unpaired spectrum resources). Frame structures for FDD (e.g., frame structure type 1) and TDD (e.g., frame structure type 2) can be defined. For the TDD frame structure, each subframe can carry uplink or downlink traffic, and special subframes can be used to handover between downlink and uplink transmissions. The allocation of uplink and downlink subframes within a radio frame can be symmetric or asymmetric, and can be statically determined or semi-statically reconfigured. Special subframes can carry downlink or uplink traffic and may include a guard period (GP) between downlink and uplink traffic. Switching from uplink to downlink traffic can be achieved by setting a timing advance at UE115 without using special subframes or a guard period. Periodic uplink-downlink configurations with handover points equal to or half the frame period (e.g., 5ms) can also be supported.

[0075] For example, a TDD frame may include one or more special frames, and the time interval between special frames can determine the periodicity of the TDDDL to UL handover point for that frame. Using TDD provides flexible deployment of UL-DL spectrum resources without the need for pairing. In some TDD network deployments, interference may occur between uplink and downlink communications (e.g., interference between uplink and downlink communications from different base stations, interference between uplink and downlink communications from the base station and the UE, etc.). For example, if different base stations 105 serve different UEs 115 within overlapping coverage areas according to different TDD UL-DL configurations, a UE 115 attempting to receive and decode downlink transmissions from the serving base station 105 may experience interference originating from uplink transmissions from neighboring UEs 115 in other locations.

[0076] In some scenarios, UE 115 may be detectable by the central base station 105 (or AP) but not by other UE 115s within the coverage area 110 of the central base station 105. For example, one UE 115 may be located at one end of the coverage area 110 of the central base station 105, while another UE 115 (e.g., a hidden node) may be located at the other end. Thus, these two UEs 115 can communicate with the base station 105 but may not be able to receive each other's transmissions. This can lead to conflicting transmissions between the two UEs 115 in a contention-based environment (e.g., Carrier Sense Multiple Access with Collision Avoidance (CSMA / CA)), as the two UEs 115 may not suppress transmissions over each other. UE 115s whose transmissions cannot be identified but are located within the same coverage area 110 may be referred to as hidden nodes. In some of the examples described herein, the UE 115 of interest and the base station 105 may be referred to as the victim UE 115 or victim AP in the presence of a potentially interfering neighbor UE 115 or AP (e.g., a hidden node), which may be further referred to as the attacker UE 115 or attacker AP.

[0077] In some scenarios, intra-cell UE ambiguity and transmission conflicts can lead to degraded system performance (e.g., due to timing synchronization issues). Intra-cell UE ambiguity and / or transmission conflicts can occur in scenarios where two or more UEs 115 cannot detect each other (e.g., the hidden node problem described above). In some scenarios, base station 105 can use permission to allocate resources to UE 115. In AUL, base station 105 can detect the presence of PUSCH and identify UE 115 via DMRS or scheduling request (SR). After an AUL UE 115 successfully contends for the medium, base station 105 can detect its PUSCH. However, since other intra-cell UEs 115 may not detect DMRS and SR from that UE 115, another intra-cell UE (e.g., an attacker) may also successfully contend for the medium. As a result, base station 105 may have misaligned TDD configurations and frame start timings, which can lead to conflicts between transmissions from these two UEs 115. In some cases, the base station may enable or disable AUL transmissions at UE 115 to reduce the possibility of interference between multiple AUL transmissions, as will be discussed in more detail below.

[0078] The time interval can be represented by a basic time unit (which can be the sampling period T). s = 1 / 30,720,000 seconds) in multiples. Time resources can be expressed in terms of length 10 ms (T). f =307200T s The system is organized into radio frames, which can be identified by System Frame Numbers (SFNs) ranging from 0 to 1023. Each frame may include 10 1ms subframes numbered from 0 to 9. Subframes may be further divided into two 0.5ms slots, each containing 6 or 7 modulation symbol periods (depending on the length of the cyclic prefix added before each symbol). Excluding the cyclic prefix, each symbol may contain 2048 sampling periods. However, in some cases described below, symbols within the wireless communication system 100 may have different durations. In some cases, a subframe may be a minimum scheduling unit, also known as a Time Interval (TTI). In other cases, the TTI may be shorter than a subframe or may be dynamically selected (e.g., in a short TTI burst or in a selected component carrier using a short TTI).

[0079] Each frame may comprise 10 1ms subframes numbered from 0 to 9; other frame structures may also be used, as discussed below. Subframes may be further divided into two 0.5ms slots, each containing 6 or 7 modulation symbol periods (depending on the length of the cyclic prefix added before each symbol). Resource elements may include one symbol period and one subcarrier (15kHz frequency range). A resource block may contain 12 coherent subcarriers in the frequency domain and, for each normal cyclic prefix in an Orthogonal Frequency Division Multiplexing (OFDM) symbol, 7 coherent OFDM symbols in the time domain (1 slot), or up to 84 resource elements.

[0080] Excluding the cyclic prefix, each symbol can contain 2048 sampling periods. In some cases, a subframe can be the smallest scheduling unit, also known as a transmission time interval. In other cases, the TTI can be shorter than a subframe or can be dynamically selected (e.g., in a short TTI burst or in a selected component carrier using a short TTI). Subframes can have different structures depending on the type and direction of the information to be transmitted. Subframe types can be uplink subframes, downlink subframes, or special (S) subframes. Special subframes can facilitate the handover from downlink to uplink transmission. Furthermore, the structure of subframes can differ in length. Other frame structures can also be used in the wireless communication system 100. In some cases, the wireless communication system 100 can be organized by transmission opportunities (TxOPs), which can be organized according to the frame structure described above and can be separated by time periods during which the wireless medium may not be available to devices within the wireless communication system 100 (e.g., UE 115 or base station 105).

[0081] In some scenarios, the wireless communication system 100 may utilize enhanced component carriers (eCC). eCC can be characterized by one or more features, including: wider bandwidth, shorter symbol duration, shorter transmission time interval (TTI), and a modified control channel configuration. In some scenarios, eCC may be associated with carrier aggregation configurations or dual connectivity configurations (e.g., when multiple serving cells have suboptimal or non-ideal backhaul links). eCC can also be configured for use in unlicensed spectrum or shared spectrum (where more than one operator is permitted to use the spectrum). eCC characterized by wide bandwidth may include one or more segments that can be utilized by a UE 115 that cannot monitor the entire bandwidth or prefers to use limited bandwidth (e.g., to save power).

[0082] In some cases, eCC may utilize symbol durations different from other CCs, which may include using a reduced symbol duration compared to other CCs. Shorter symbol durations may be associated with increased subcarrier spacing. The TTI in an eCC may include one or more symbols. In some cases, the TTI duration (i.e., the number of symbols in the TTI) may be variable. Devices utilizing eCC (such as UE 115 or base station 105) may transmit wideband signals (e.g., 20, 40, 60, 80 MHz, etc.) with reduced symbol durations (e.g., 16.67 microseconds). The TTI in an eCC may include one or more symbols. In some cases, the TTI duration (i.e., the number of symbols in the TTI) may be variable.

[0083] As indicated above, one or more UEs 115 can operate in autonomous (i.e., unscheduled) uplink mode. When operating in AUL mode, UE 115 can be configured using autonomous control channels (e.g., A-PUCCH). In the various examples, these A-PUCCH configurations may be configured according to the needs or constraints of the UE 115 or the system.

[0084] In some scenarios, the wireless communication system 100 may support different uplink transmission configurations (e.g., mixed-mode scheduling) for different UEs 115. That is, a first UE 115 may operate using AUL transmissions (which can be used as a supplement to scheduled uplink transmissions), while other UEs 115 may use scheduled uplink transmissions. This mixed-mode scheduling may be associated with enhanced communication performance within the system, and the base station 105 may enable or disable AUL transmissions at different UEs 115 to provide this mixed-mode scheduling. As a result, the configuration of UEs 115 that can operate using unscheduled and / or scheduled uplink transmissions may be determined by the serving base station 105.

[0085] In some examples, a UE 115 configured for AUL can perform channel contention and gain access to the shared RF band based on the AUL configuration available to the UE 115 from base station 105. In some cases, the UE 115 can modify the uplink waveform or provide base station 105 with indications of one or more channel resources available for transmission at base station 150 to more fully utilize the shared RF band resources within the MCOT. In some examples, the DCI's CRC can be scrambled with an identifier indicating whether AUL transmission is activated or deactivated at a particular UE 115. In some cases, the UE 115 and base station 105 can exchange various other control information to provide relatively efficient autonomous uplink transmission and use of shared RF band resources, as discussed herein.

[0086] Figure 2Examples of a wireless communication system 200 supporting autonomous uplink transmission technology using shared radio frequency spectrum according to various aspects of this disclosure are described. The wireless communication system 200 may include a base station 105-a and a UE 115-a, which may be referenced... Figure 1 Examples of the corresponding devices described. For example, UE 115-a may be time-synchronized with base station 105-a and may be able to perform unscheduled or AUL transmissions to base station 105-a. In some examples, base station 105-a may enable UE 115-a to perform AUL transmissions via downlink transmission 205 (e.g., RRC signaling) including AUL configuration information 210. UE 115-a may perform contention procedures to gain channel access and may transmit uplink transmission 215 that may include AUL transmission 220.

[0087] In the wireless communication system 200, as described in more detail below, AUL transmission 220 and associated control information can be transmitted between base station 105-a and UE 115-a in a manner that provides enhanced efficiency shared resources (such as shared RF band resources). For example, UE 115-a may have data to be transmitted using AUL transmission 220, and may determine that the data to be transmitted in the AUL transmission spans less than the total duration of the transmission opportunity (TxOP) acquired by UE 115-a as part of a channel contention process. In such a case, UE 115-a may signal to base station 105-a to notify of the number of unused subframes of the TxOP that can subsequently be used by base station 105-a. In this way, both UE 115-a and base station 105-a can use shared resources more efficiently and increase system throughput and efficiency. In some cases, AUL transmission 220 may occupy the entire TxOP or almost the entire TxOP, and UE 115-a may modify the waveform of the AUL transmission to provide a gap for base station 105-a to perform LBT procedures during its period.

[0088] An example of this gap is... Figure 3 The Chinese explanation is that Figure 3 Examples of shared channel resources 300 supporting autonomous uplink transmission technologies using shared radio frequency spectrum, according to various aspects of this disclosure, are explained. Shared channel resources 300 can be provided by, as referred to... Figure 1 and 2 The base station 105 and UE 115 described herein are utilized.

[0089] As indicated above, in some cases, it may be desirable to provide a gap between the AUL transmission and subsequent downlink transmissions from the base station, during which the base station can perform LBT procedures. Furthermore, in some cases, regulations associated with shared channel contention procedures may specify the maximum gap between transmissions between the UE and the base station. For example, ETSI regulations specify a maximum gap of 25 μs between base station and UE transmissions, and in some cases, the base station may transmit a cell-specific reference signal (CRS) in the first symbol of the downlink transmission, which the UE can use to detect transmissions from the base station.

[0090] Reference Figure 3 The UE can perform CCA 305 and gain access to the shared channel resource 300, and can transmit AUL transmissions 310. Synchronized timing in the system can specify that downlink transmissions begin in the first downlink subframe 320 following the last uplink subframe 325. As indicated above, the UE can leave a gap 315 between the last uplink subframe 325 and the first downlink subframe 320, during which the base station can perform channel contention. Furthermore, in some cases, a maximum time period (e.g., X μs) can be specified. Additionally, the UE can apply timing advance (TA) when transmitting uplink transmissions to provide uplink transmissions arriving at the base station and to provide system synchronization. TA can be used to compensate for propagation delays in AUL transmissions 310 between the UE and the base station, and can be determined by the UE according to an established technique for determining TA.

[0091] In such examples, the UE may modify the uplink transmission waveform or provide signaling to the base station, which provides gap 315 and also follows any specified maximum time gap. In some examples, the UE may generate an uplink waveform spanning the entire duration of AUL transmission 310 and subsequently punch through the last (X–TA) μs of AUL transmission 310 in the last symbol of the last downlink subframe 325. In other examples, the UE may generate a time spanning one symbol less than the entire duration of AUL transmission 310 and may cyclically extend samples of the last symbol of the waveform (X–TA) μs before the boundary of the first downlink subframe 320. In some examples, if TA is greater than X μs, the base station may perform a channel contention procedure and transmit a reserved signal up to TA μs until the boundary of the first downlink subframe 320. In some cases, Autonomous Uplink Control Information (A-UCI) can be transmitted in AUL transmission 310. In such cases, if the A-UCI is transmitted in the last uplink subframe 325, the physical channel carrying the A-UCI (e.g., A-PUCCH) is not defined as the last symbol for that last uplink subframe, and thus the physical channel can be reliably transmitted without being punctured. The base station can then perform X μs of CCA to initiate downlink transmission at the first downlink subframe 320.

[0092] Figure 4 An example of process flow 400 supporting autonomous uplink transmission technology using shared radio frequency spectrum according to various aspects of this disclosure is described. Process flow 400 may include UE 115-b and base station 105-b, which may be as referenced herein. Figure 1-2 The described UE 115 and corresponding examples of base station 105. Process flow 400 may be an example using different autonomous uplink transmission technologies, wherein UE 115-b may transmit one or more channel access parameters, and base station 105-a may use these channel access parameters to opportunistically transmit one or more downlink transmissions within the MCOT acquired by the UE.

[0093] Base station 105-b can determine the AUL configuration for UE 115-b and can transmit AUL configuration 405 to UE 115-b in downlink transmission. In some cases, AUL configuration 405 can be transmitted using RRC signaling.

[0094] In box 410, UE 115-b may identify an AUL configuration, and based on this AUL configuration, may identify that data is to be transmitted to base station 105-b using one or more AUL transmissions. In some cases, the AUL configuration may include the time period during which UE 115-b may transmit AUL transmissions and provide various parameters (e.g., MCS, uplink power control parameters, etc.). In some cases, the AUL configuration may include information about the type of channel contention procedure that can be performed by UE 115-b (such as, for example, Category-4 or Category-2 LBT).

[0095] In box 415, UE 115-b may execute an LBT procedure according to the AUL configuration. In some cases, UE 115-b may perform CCA in a manner similar to that discussed above to confirm that a channel in the shared RF band is not occupied by another transmitter. In some cases, the LBT procedure may be successful, and UE 115-b may obtain channel access and identify the MCOT associated with the AUL transmission. In some cases, the AUL configuration may specify that UE 115-b obtains a channel in the shared RF band based on the MCOT obtained by base station 105-b. In other cases, the AUL configuration may specify that UE 115-b may obtain its own MCOT as part of LBT procedure 415. In the case where UE 115-b may execute a Category-4 LBT and obtain its own MCOT, the timing of starting the LBT may depend on UE 115-b, and the MCOT may be determined by UE 115-b. In some cases, UE 115-b can determine the LBT priority class, and if MCOT is obtained by UE 115-b, a portion of MCOT can be shared with base station 105-b.

[0096] In box 420, UE 115-b can determine the uplink transmission duration and the TA for AUL transmission. The uplink transmission duration can be determined, for example, based on the amount of data to be transmitted in the AUL transmission, the time period available for the AUL transmission, the MCS for the AUL transmission, or any combination thereof. In some cases, the TA can be identified based on the propagation delay of the signal transmitted between UE 115-b and base station 105-b, according to established TA determination techniques.

[0097] In box 425, UE 115-b may determine channel access parameters associated with the AUL transmission and may transmit the AUL transmission 430, including these access parameters, to base station 105-b. As indicated above, in some cases, UE 115-b may acquire the MCOT and may share the MCOT with base station 105-b. In such cases, the channel access parameters may include an indication of whether base station 105-b can share the MCOT. In some cases, the LBT priority class is part of the channel access parameters, and base station 105-b may use a portion of the MCOT not used by UE 115-b. In some cases, the base station may be unable to autonomously estimate the exact duration of the AUL transmission 430, for example due to burst interference during reception, and thus signaling the LBT priority class as part of the channel access parameters may not allow base station 105-b to reliably estimate available resources that can be used for downlink transmission. Therefore, in some examples, the channel access parameters may include the number of subframes that can be used by base station 105-b within the TxOP obtained by UE 115-b.

[0098] In some scenarios, channel access parameters may be signaled to base station 105-b in the uplink control information (A-UCI) provided in AUL transmission 430. In some scenarios, channel access parameters may include an indication associated with the gap between the subframe boundary of the uplink transmission and the subsequent downlink transmission, which may allow base station 105-b to initiate an LBT procedure, for example, during that gap. In some examples, base station 105-b may transmit downlink transmissions within a TxOP acquired by the UE, but may not share that TxOP with other UEs in the system.

[0099] In box 435, base station 105-b may identify subframes available for subsequent downlink transmissions. This determination may be made based on, for example, channel access parameters provided by UE 115-b as discussed above. Base station 105-b may then transmit one or more downlink transmissions 440 to UE 115-b.

[0100] In some examples, UE 115-b may have more data to transmit in an AUL transmission than the resources that UE 115-b may have available. In some examples, if UE 115-b has more data to transmit, the AUL configuration may specify that UE 115-b may continue AUL transmission in certain situations. In some situations, the AUL configuration may provide UE 115-b scheduling in either Mode 1 or Mode 2. Mode 1 provides scheduling within the MCOT acquired by base station 105-b, and Mode 2 provides the MCOT acquired by the UE using Category-4 LBT (Mode 2 can be switched to Mode 1 if base station 105-b obtains channel access at least one or two subframes before UE 115-b can transmit). If UE 115-b continues outside its scheduled subframes in Mode 1, it may interfere with transmissions from other UEs unless explicitly signaled otherwise. Therefore, in some examples, when the UE performs Category 4 LBT, UE 115-b may be allowed to continue AUL transmission in Mode 2. The first subframe of a subsequent AUL transmission in such cases may include A-PUCCH signaling indicating that UE 115-b is continuing AUL transmission. In some cases, AUL transmission 430 may be a MIMO transmission, and the AUL configuration may provide rank 2 uplink MIMO AUL transmission.

[0101] Figure 5 An example of another process flow 500 supporting autonomous uplink transmission technology using shared radio frequency spectrum is described according to various aspects of this disclosure. Process flow 500 may include UE 115-c and base station 105-c, which may be as referenced herein. Figure 1-2 The corresponding examples of UE 115 and base station 105 are described. Process flow 500 may be an example using different autonomous uplink transmission technologies, wherein UE 115-c can be configured to enable / disable AUL transmission based on DCI.

[0102] Base station 105-c can determine the AUL configuration for UE 115-c and can transmit AUL configuration 505 to UE 115-c during downlink transmission. In some cases, AUL configuration 505 can be transmitted using RRC signaling.

[0103] In box 510, base station 105-c may determine whether UE 115-b should be able to perform AUL transmission. This determination may be made, for example, based on the amount of information available for transmission at UE 115-c (e.g., as reported in a buffer status report (BSR)), one or more other UEs that can be configured for AUL transmission, channel conditions, network traffic conditions, one or more other parameters, or any combination thereof.

[0104] In box 515, base station 105-c may scramble the DCI CRC using a UE identifier that enables AUL transmission. In some examples, the UE identifier may be an AUL Radio Network Temporary Identifier (AUL-RNTI) that enables AUL transmission from UE 115-c. In some examples, a CRC may be generated for DCI and subsequently scrambled with the AUL-RNTI. Base station 105-c may then transmit DCI 520 with the scrambled CRC.

[0105] In box 525, UE 115-c may receive the DCI and execute the autonomous uplink LBT procedure. In some cases, UE 115-c may correspondingly perform blind decoding of the scrambled DCI and determine that AUL transmission has been activated when the CRC of the DCI is successfully decoded according to the blind decoding of the CRC scrambled by AUL-RNTI. In some cases, the DCI may provide a semi-persistent scheduling (SPS) for UE 115-c, which can be used for AUL transmission. Based on a successful channel contention procedure, UE 115-c may then transmit the AUL transmission 530. In some examples, UE 115-c may continue the channel contention procedure and AUL transmission according to the SPS.

[0106] In box 535, base station 105-c may determine to disable AUL transmission at UE 115-c. This determination may be made in a similar manner to the methods discussed above for determining whether to enable AUL transmission, and may be based on one or more of the same parameters.

[0107] In box 540, base station 105-c can scramble the DCI CRC using a UE identifier that disables AUL transmission. In some cases, the DCI CRC can be transmitted simply without scrambling, which indicates to UE 115-c that AUL transmission is disabled. In some cases, a different RNTI can optionally be used to scramble the CRC, which indicates to UE 115-c that AUL transmission is disabled. Base station 105-c can transmit DCI 545 to UE 115-c.

[0108] In box 550, UE 115-c may receive DCI 545 and interrupt unscheduled AUL transmissions. In some examples, UE 115-c may determine to interrupt AUL transmissions based on whether the CRC of the DCI is scrambled, or based on the identifier used to scramble the CRC.

[0109] Figure 6 An example of another process flow 600 supporting autonomous uplink transmission technology using shared radio frequency spectrum is described according to various aspects of this disclosure. Process flow 600 may include UE 115-d and base station 105-d, which may be as referenced herein. Figure 1-2The corresponding examples of the UE 115 and base station 105 are described.

[0110] Base station 105-d can determine the AUL configuration for UE 115-d and can transmit AUL configuration 605 to UE 115-d during downlink transmission. In some cases, AUL configuration 605 can be transmitted using RRC signaling.

[0111] In box 610, UE 115-d may identify an AUL configuration, and based on this AUL configuration, may identify that data is to be transmitted to base station 105-d using one or more AUL transmissions. In some cases, the AUL configuration may include the time period during which UE 115-d may transmit AUL transmissions, and provide various parameters (e.g., MCS, uplink power control parameters, etc.).

[0112] In box 615, UE 115-d may perform LBT procedures according to the AUL configuration. In some cases, UE 115-d may perform CCA in a manner similar to that discussed above to confirm that the channel sharing the RF band is not occupied by another transmitter. In some cases, the LBT procedure may be successful and UE 115-d may obtain channel access.

[0113] In box 620, UE 115-d may determine the UCI to be transmitted with one or more AUL transmissions. The UCI may include one or more channel access parameters, such as those discussed above, HARQ ID, burst length, MCOT, RV, NDI, AUL-RNTI, or any combination thereof.

[0114] In box 625, UE 115-d can rate match UCI and PUSCH information within uplink resources. In some cases, UE 115-d can embed A-UCI information via PUSCH rate matching in a manner similar to carrying periodic CSI and ACK / NACK on the PUSCH in legacy LTE systems. In some cases, base station 105-d can signal the number of resources used for rate matching. In some cases, the UCI payload can be of fixed size and can additionally or alternatively be independent of the actual number of subframes that the A-UCI can address (e.g., the payload is budgeted for 4 subframe transmissions). After rate matching, UE 115-d can transmit AUL transmission 630 to base station 105-d.

[0115] Figure 7 An example of another process flow 700 supporting autonomous uplink transmission technology using shared radio frequency spectrum is described according to various aspects of this disclosure. Process flow 700 may include UE 115-e and base station 105-e, which may be as referenced herein. Figure 1-2The corresponding examples of the UE 115 and base station 105 are described.

[0116] Base station 105-e can determine the AUL configuration for UE 115-e and can transmit AUL configuration 705 to UE 115-e during downlink transmission. In some cases, AUL configuration 705 can be transmitted using RRC signaling.

[0117] In box 710, UE 115-e may identify an AUL configuration, and based on this AUL configuration, may identify that data is to be transmitted to base station 105-e using one or more AUL transmissions. In some cases, the AUL configuration may include the time period during which UE 115-e may transmit AUL transmissions, and provide various parameters (e.g., MCS, uplink power control parameters, etc.).

[0118] In box 715, UE 115-e can perform LBT procedures according to the AUL configuration. In some cases, UE 115-e can perform CCA in a similar manner as discussed above to confirm that the channel sharing the RF band is not occupied by another transmitter. In some cases, the LBT procedure can be successful, and UE 115-e can obtain channel access and transmit AUL transmission 720.

[0119] In box 725, base station 105-e may perform HARQ processing and determine one or more uplink transmission parameters. In some cases, base station 105-e may perform HARQ processing and generate a bitmap of ACK / NACK indicators for all HARQ procedures, and in some cases, the ACK / NACK indicators may be bundled to save bits. In some cases, the one or more uplink transmission parameters may include uplink power control information. In some cases, CQI and MCS updates may be included in the uplink transmission parameters and may be transmitted in the Media Access Control (MAC) control element (CE) to enable base station 105-e to receive an acknowledgment of reception from UE 115-e. In some cases, the MAC-CE may be scrambled with UE 115-e's AUL-RNTI, and UE 115-e may monitor this permission for X ms after completing AUL transmission 720. If the transmission time exceeds X ms, UE 115-e can consider AUL transmission 720 loss and initiate a retransmission procedure.

[0120] In block 730, base station 105-e can format HARQ processing and UL transmission parameters into an A-DCI. The A-DCI 735 can be transmitted to UE 115-e in subsequent downlink transmissions to UE 115-e. In some examples, a CQI or MCS indicator may be provided in the MAC control element (CE) transmitted over shared channel transmissions. In some examples, the one or more uplink transmission parameters (e.g., uplink power control information) can be formatted into an A-DCI. For example, a CQI or MCS indicator may be included in the one or more uplink transmission parameters and may be transmitted in the A-DCI 735. In some examples, the CQI indicator may also include a precoding matrix indicator.

[0121] In box 740, UE 115-e can perform A-DCI and HARQ processing. Based on this processing, UE 115-e can determine whether to retransmit one or more AUL transmissions and can determine one or more parameters for subsequent uplink transmissions, such as power control parameters, MCS, etc. In some cases, UE 115-e can receive MAC-CE with CQI and MCS, and as part of the HARQ processing, can generate ACK / NACK for the MAC-CE, thereby allowing base station 105-e to acknowledge that the CQI and MCS were successfully received.

[0122] In box 745, UE 115-e may perform another LBT procedure according to the AUL configuration. Upon successful LBT and acquisition of channel access, UE 115-e may transmit subsequent AUL transmission 750. AUL transmission 750 may be transmitted according to one or more transmission parameters included in A-DCI 735 and may include an ACK / NACK indication of whether MAC-CE was successfully received.

[0123] Figure 8 A block diagram 800 of a wireless device 805 supporting autonomous uplink transmission technology using shared radio frequency spectrum is shown according to various aspects of this disclosure. The wireless device 805 may be as described in reference... Figure 1 Examples of various aspects of the described user equipment (UE) 115. Wireless device 805 may include a receiver 810, a UE autonomous uplink manager 815, and a transmitter 820. Wireless device 805 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0124] Receiver 810 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to autonomous uplink transmission technologies using shared radio frequency spectrum). This information can be transmitted to other components of the device. Receiver 810 can be a reference... Figure 11 Examples of various aspects of the transceiver 1135 described.

[0125] UE Autonomous Uplink Manager 815 can be used as a reference Figure 11 Examples of various aspects of the described UE autonomous uplink manager 1115.

[0126] At least some of the sub-components of the UE Autonomous Uplink Manager 815 and / or its various sub-components may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functionality of at least some of the sub-components of the UE Autonomous Uplink Manager 815 and / or its various sub-components may be performed by a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described in this disclosure. At least some of the sub-components of the UE Autonomous Uplink Manager 815 and / or its various sub-components may be physically located in various locations, including being distributed such that portions of the functionality are implemented by one or more physical devices in different physical locations. In some examples, at least some of the sub-components of the UE Autonomous Uplink Manager 815 and / or its various sub-components may be separate and distinct components according to various aspects of this disclosure. In other examples, according to various aspects of this disclosure, at least some of the UE autonomous uplink manager 815 and / or its various sub-components may be combined with one or more other hardware components (including, but not limited to, I / O components, transceivers, network servers, other computing devices, one or more other components or combinations thereof described in this disclosure).

[0127] In some examples, the UE autonomous uplink manager 815 may contend for access to a channel in a shared RF band based on an autonomous uplink configuration indicating a transmission window available for autonomous uplink transmission, determine one or more channel access parameters based on one or more of the duration of the uplink transmission to be transmitted on the channel in the shared RF band or the TA used for the uplink transmission, and transmit the uplink transmission on the channel in the shared RF band according to the autonomous uplink configuration, wherein the uplink transmission indicates one or more of the channel access parameters.

[0128] In some scenarios, the UE autonomous uplink manager 815 may receive RRC signaling including autonomous uplink configuration for unscheduled autonomous uplink transmissions in a shared RF band, receive DCI activating autonomous uplink transmissions, contend for access to a channel in the shared RF band according to the autonomous uplink configuration, and transmit one or more autonomous uplink transmissions on a channel in the shared RF band according to the autonomous uplink configuration.

[0129] In some scenarios, the UE autonomous uplink manager 815 can identify autonomous uplink configurations for unscheduled uplink transmissions in a shared RF band, contend for access to a channel in the shared RF band based on the autonomous uplink configuration, determine uplink control information and uplink shared channel information for uplink transmissions to be transmitted on a channel in the shared RF band, perform rate matching of the uplink shared channel information around the uplink control information in the uplink transmissions, and transmit uplink transmissions on a channel in the shared RF band based on the autonomous uplink configuration.

[0130] In some scenarios, the UE autonomous uplink manager 815 can identify autonomous uplink configurations for unscheduled uplink transmissions in a shared RF band, receive A-DCIs associated with one or more autonomous uplink transmissions, and transmit autonomous uplink transmissions in the shared RF band based on the autonomous uplink configuration and A-DCIs.

[0131] Transmitter 820 can transmit signals generated by other components of the device. In some examples, transmitter 820 may coexist with receiver 810 in a transceiver module. For example, transmitter 820 may be a reference... Figure 11 Examples of various aspects of the transceiver 1135 described herein. Transmitter 820 may include a single antenna, or it may include an array of antennas.

[0132] Figure 9 A block diagram 900 of a wireless device 905 supporting autonomous uplink transmission technology using shared radio frequency spectrum is shown according to various aspects of this disclosure. The wireless device 905 may be as described in reference... Figure 1 and 8 Examples of various aspects of the described wireless device 805 or UE 115. Wireless device 905 may include a receiver 910, a UE autonomous uplink manager 915, and a transmitter 920. Wireless device 905 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0133] Receiver 910 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to autonomous uplink transmission technologies using shared radio frequency spectrum). This information can be transmitted to other components of the device. Receiver 910 can be a reference... Figure 11 Examples of various aspects of the transceiver 1135 described.

[0134] UE Autonomous Uplink Manager 915 can be used as a reference Figure 11 Examples of various aspects of the described UE autonomous uplink manager 915. The UE autonomous uplink manager 915 may also include a listen-before-talk (LBT) manager 925, a control information component 930, a data manager 935, and an autonomous uplink configuration manager 940.

[0135] The LBT Manager 925 can contend for access to a channel in a shared RF band based on its autonomous uplink configuration. In some cases, the UAL configuration can indicate the transmission window available for autonomous uplink transmission, and the LBT Manager 925 can contend for access to a channel in a shared RF band based on its autonomous uplink configuration.

[0136] Control information component 930 may determine one or more channel access parameters. In some cases, the channel access parameters may be based on one or more of the duration of an uplink transmission to be transmitted on a channel in a shared RF band or the TA used for that uplink transmission. In some cases, control information component 930 may receive a DCI that activates autonomous uplink transmission and a subsequent DCI that deactivates autonomous uplink transmission. In some cases, control information component 930 may determine uplink control information and uplink shared channel information for the uplink transmission to be transmitted on a channel in a shared RF band.

[0137] In some cases, the control information component 930 may receive an A-DCI associated with one or more autonomous uplink transmissions. In some cases, the control information may include a CQI or MCS indicator transmitted in the MAC-CE over a shared channel transmission and may provide confirmation of receipt of the CQI or MAC. In some cases, the A-DCI includes a bit mapping of feedback information associated with one or more feedback procedures associated with one or more autonomous uplink transmissions. In some cases, the A-DCI and / or MAC-CE include uplink power control information for one or more autonomous uplink transmissions.

[0138] In some cases, the difference between the MCOT and the duration of the uplink transmission is indicated in the channel access parameters as the number of subframes available to one or more other transmitters. In some cases, the DCI includes a CRC field scrambled with an identifier, the value of which indicates that the DCI is associated with an autonomous uplink transmission. In some cases, the one or more channel access parameters may include the MCOT used for the uplink transmission and the time difference between the MCOT and the duration of the uplink transmission. In some cases, the payload size of the uplink control information may be a fixed size configured in the autonomous uplink configuration. In some cases, the payload size is independent of the number of subframes in the uplink transmission. In some cases, resources for uplink control information and rate matching for shared channel information are configured in the autonomous uplink configuration.

[0139] Data Manager 935 manages uplink transmissions. In some cases, Data Manager 935 can modify the waveform of the uplink transmission based on TA, and transmit the uplink transmission on a channel in a shared RF band according to an autonomous uplink configuration, wherein the uplink transmission indicates one or more of the channel access parameters. In some cases, Data Manager 935 can determine to transmit additional data after a transmission window used for AUL transmissions, and when MCOT is determined as part of contention for access to a channel in a shared RF band, transmit one or more subsequent uplink transmissions outside the transmission window after the uplink transmission.

[0140] In some scenarios, the data manager 935 can determine that an AUL transmission is active, transmit one or more autonomous uplink transmissions on a channel in a shared RF band according to the autonomous uplink configuration, and interrupt contention for access to a channel in the shared RF band in response to receiving a DCI indicating that autonomous uplink transmissions are disabled. In some scenarios, the data manager 935 can perform rate matching of uplink shared channel information around uplink control information in uplink transmissions.

[0141] The autonomous uplink configuration manager 940 can receive RRC signaling that includes autonomous uplink configuration for unscheduled autonomous uplink transmission in a shared RF band, as well as autonomous uplink configuration identifying the unscheduled uplink transmission in a shared RF band.

[0142] Transmitter 920 can transmit signals generated by other components of the device. In some examples, transmitter 920 may coexist with receiver 910 in a transceiver module. For example, transmitter 920 may be a reference... Figure 11 Examples of various aspects of the transceiver 1135 described herein. Transmitter 920 may include a single antenna, or it may include an array of antennas.

[0143] Figure 10 A block diagram 1000 of a UE autonomous uplink manager 1015 supporting autonomous uplink transmission technology using shared radio frequency spectrum is shown according to various aspects of this disclosure. The UE autonomous uplink manager 1015 may be a reference... Figure 8 , 9 Examples of aspects of the UE Autonomous Uplink Manager 815, UE Autonomous Uplink Manager 915, or UE Autonomous Uplink Manager 1115 described in section 11. The UE Autonomous Uplink Manager 1015 may include an LBT Manager 1020, a Control Information Component 1025, a Data Manager 1030, an Autonomous Uplink Configuration Manager 1035, a Timing Slot Component 1040, a UCI Manager 1045, a MIMO Manager 1050, and a Hybrid Automatic Repeat Request (HARQ) Manager 1055. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses).

[0144] The LBT Manager 1020 can contend for access to a channel in a shared RF band based on an autonomous uplink configuration that indicates the transmission window available for autonomous uplink.

[0145] Control information component 1025 may determine one or more channel access parameters. In some cases, these one or more channel access parameters may be based on one or more of the duration of an uplink transmission to be transmitted on a channel in a shared RF band or the TA used for that uplink transmission. In some cases, control information component 1025 may receive a DCI that activates autonomous uplink transmission and a subsequent DCI that deactivates autonomous uplink transmission. In some cases, control information component 1025 may determine uplink control information and uplink shared channel information for the uplink transmission to be transmitted on a channel in a shared RF band.

[0146] In some cases, the control information component 1025 may receive an A-DCI associated with one or more autonomous uplink transmissions. In some cases, a CQI or MAC indicator may be provided in the MAC-CE transmitted over a shared channel, and confirmation of receipt of a CQI or MCS may be provided. In some cases, the A-DCI includes a bit mapping of feedback information associated with one or more feedback procedures associated with one or more autonomous uplink transmissions. In some cases, the A-DCI and / or MAC-CE include uplink power control information for one or more autonomous uplink transmissions.

[0147] In some cases, the difference between the MCOT and the duration of the uplink transmission is indicated in the channel access parameters as the number of subframes available to one or more other transmitters. In some cases, the DCI includes a CRC field scrambled with an identifier, the value of which indicates that the DCI is associated with an autonomous uplink transmission. In some cases, the one or more channel access parameters may include the MCOT used for the uplink transmission and the time difference between the MCOT and the duration of the uplink transmission. In some cases, the payload size of the uplink control information may be a fixed size configured in the autonomous uplink configuration. In some cases, the payload size is independent of the number of subframes in the uplink transmission. In some cases, resources for uplink control information and rate matching for shared channel information are configured in the autonomous uplink configuration.

[0148] Data Manager 1030 manages uplink transmissions. In some cases, Data Manager 1030 can modify the waveform of the uplink transmission based on TA, and transmit the uplink transmission on a channel in a shared RF band according to an autonomous uplink configuration, wherein the uplink transmission indicates one or more of the channel access parameters. In some cases, Data Manager 1030 can determine to transmit additional data after a transmission window used for AUL transmissions, and when MCOT is determined as part of contention for access to a channel in a shared RF band, transmit one or more subsequent uplink transmissions outside the transmission window after the uplink transmission.

[0149] In some scenarios, the data manager 1030 may determine that an AUL transmission is activated, transmit one or more autonomous uplink transmissions on a channel in a shared RF band according to the autonomous uplink configuration, and interrupt contention for access to a channel in the shared RF band in response to receiving a DCI indicating that autonomous uplink transmissions are disabled. In some scenarios, the data manager 1030 may perform rate matching of uplink shared channel information around uplink control information in uplink transmissions.

[0150] The autonomous uplink configuration manager 1035 can receive RRC signaling that includes autonomous uplink configuration for unscheduled autonomous uplink transmission in a shared RF band, as well as autonomous uplink configuration identifying the unscheduled uplink transmission in a shared RF band.

[0151] The timing gap component 1040 can identify the time at which a subsequent downlink transmission begins after an uplink transmission, formatting the uplink transmission to occupy a channel in a shared RF band until the start of the subsequent downlink transmission. In some cases, the transmitter of the subsequent downlink transmission performs CCA to occupy the maximum time gap between the uplink transmission and the subsequent downlink transmission. In some cases, the timing gap component 1040 can transmit to the base station the time difference between the MCOT and the duration of the uplink transmission, during which the base station can transmit one or more transmissions. In some cases, one or more other UEs can be prevented from transmitting during the time difference.

[0152] In some cases, the AUL waveform can be modified by: formatting the data to be transmitted as an uplink transmission, identifying the timing of the start of the subsequent downlink transmission after the uplink transmission and the maximum time gap between the uplink transmission and the subsequent downlink transmission, determining the difference between the maximum time gap and the TA, and the duration of the last symbol of the punctured uplink transmission reaching the difference between the maximum time gap and the TA. In some cases, the waveform can be modified by: formatting the data to be transmitted as an uplink transmission, identifying the timing of the start of the subsequent downlink transmission after the uplink transmission and the maximum time gap between the uplink transmission and the subsequent downlink transmission, determining the time difference between the end of the last symbol of the uplink transmission and the maximum time gap, and cyclically extending the sample of the last symbol of the uplink transmission to extend the duration to reach the difference between the maximum time gap and the TA. In some cases, determining one or more channel access parameters further includes: determining that the TA exceeds the maximum time gap between the uplink transmission and the subsequent downlink transmission, and wherein the TA is indicated in the uplink transmission to allow another transmitter to transmit a reserved signal up to at least a portion of the TA.

[0153] The UCI manager 1045 can identify the UCI associated with an uplink transmission and transmit the UCI in the symbols of the uplink transmission before the last symbol of the uplink transmission. In some cases, the first subframe of the first subsequent uplink transmission in the one or more subsequent uplink transmissions includes control channel information providing information about the one or more subsequent uplink transmissions. In some cases, the UCI may include the burst length of the uplink transmission, MCOT, RV indication, NDI, or AUL-RNTI.

[0154] The MIMO manager 1050 can enable autonomous uplink transmission on one or more transmit antennas according to the MIMO configuration. The HARQ manager 1055 can provide one or more HARQ identifiers and provide HARQ processing. In some cases, HARQ feedback information includes one or more ACK / NACK indications for one or more HARQ procedures. In some cases, bits from two or more feedback procedures are bundled.

[0155] Figure 11 A diagram is shown of a system 1100 including a device 1105 supporting autonomous uplink transmission technology using shared radio frequency spectrum, according to various aspects of this disclosure. Device 1105 may be, for example, as described above. Figure 1 , 8 Examples of components of the wireless device 805, wireless device 905, or UE 115 described in 9, or including such components. Device 1105 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, including a UE autonomous uplink manager 1115, a processor 1120, a memory 1125, software 1130, a transceiver 1135, an antenna 1140, and an I / O controller 1145. These components may be in electronic communication via one or more buses (e.g., bus 1110). Device 1105 may wirelessly communicate with one or more base stations 105.

[0156] Processor 1120 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, central processing units (CPUs), microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1120 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1120. Processor 1120 may be configured to execute computer-readable instructions stored in memory to perform various functions (e.g., functions or tasks supporting autonomous uplink transmission technologies using shared radio frequency spectrum).

[0157] Memory 1125 may include random access memory (RAM) and read-only memory (ROM). Memory 1125 may store computer-readable, computer-executable software 1130, including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, memory 1125 may particularly include a basic input / output system (BIOS) that controls basic hardware and / or software operation, such as interaction with peripheral components or devices.

[0158] Software 1130 may include code for implementing various aspects of this disclosure, including code for supporting autonomous uplink transmission technologies using shared radio frequency spectrum. Software 1130 may be stored in a non-transient computer-readable medium, such as system memory or other memory. In some cases, software 1130 may not be executed directly by a processor, but may instead enable a computer (e.g., at the time of compilation and execution) to perform the functions described herein.

[0159] Transceiver 1135 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, transceiver 1135 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 1135 may also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and to demodulate packets received from the antenna.

[0160] In some cases, the wireless device may include a single antenna 1140. However, in other cases, the device may have more than one antenna 1140, which may be able to transmit or receive multiple wireless transmissions concurrently.

[0161] I / O controller 1145 manages the input and output signals of device 1105. I / O controller 1145 can also manage peripheral devices not integrated into device 1105. In some cases, I / O controller 1145 may represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1145 may utilize an operating system, such as... Or another known operating system. In other cases, I / O controller 1145 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, I / O controller 1145 may be implemented as part of a processor. In some cases, a user may interact with device 1105 via I / O controller 1145 or via hardware components controlled by I / O controller 1145.

[0162] Figure 12 A block diagram 1200 of a wireless device 1205 supporting autonomous uplink transmission technology using shared radio frequency spectrum is shown according to various aspects of this disclosure. The wireless device 1205 may be as described in reference... Figure 1 Examples of various aspects of the described base station 105. Wireless device 1205 may include a receiver 1210, a base station autonomous uplink manager 1215, and a transmitter 1220. Wireless device 1205 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0163] Receiver 1210 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to autonomous uplink transmission technologies using shared radio frequency spectrum). The information can be transmitted to other components of the device. Receiver 1210 can be a reference... Figure 15 Examples of various aspects of the transceiver 1535 described.

[0164] Receiver 1210 can receive one or more autonomous uplink transmissions on a channel in a shared RF band, depending on the autonomous uplink configuration.

[0165] Base station autonomous uplink manager 1215 can be a reference Figure 15 Examples of various aspects of the described Base Station Autonomous Uplink Manager 1515.

[0166] At least some of the sub-components of the Base Station Autonomous Uplink Manager 1215 and / or its various sub-components may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functionality of at least some of the sub-components of the Base Station Autonomous Uplink Manager 1215 and / or its various sub-components may be performed by a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device designed to perform the functions described in this disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof. At least some of the sub-components of the Base Station Autonomous Uplink Manager 1215 and / or its various sub-components may be physically located in various locations, including being distributed such that portions of the functionality are implemented by one or more physical devices in different physical locations. In some examples, at least some of the sub-components of the Base Station Autonomous Uplink Manager 1215 and / or its various sub-components may be separate and distinct components according to various aspects of this disclosure. In other examples, according to various aspects of this disclosure, at least some of the sub-components of the base station autonomous uplink manager 1215 and / or its various sub-components may be combined with one or more other hardware components (including, but not limited to, I / O components, transceivers, network servers, other computing devices, one or more other components or combinations thereof described in this disclosure).

[0167] The base station autonomous uplink manager 1215 can configure the UE for autonomous uplink transmission in a shared RF band, receive autonomous uplink transmissions from the UE in the shared RF band, the autonomous uplink transmissions including one or more channel access parameters, and transmit downlink transmissions in the shared RF band according to one or more of the channel access parameters. The base station autonomous uplink manager 1215 can also transmit RRC signaling to the UE including autonomous uplink configuration for unscheduled autonomous uplink transmissions in the shared RF band, determine that the autonomous uplink transmission should be activated for the UE, transmit a DCI to activate the autonomous uplink transmission in response to the determination that the autonomous uplink transmission should be activated for the UE, determine that the autonomous uplink transmission should be deactivated for the UE, and transmit a DCI to deactivate the autonomous uplink transmission in response to the determination that the autonomous uplink transmission should be deactivated for the UE.

[0168] Transmitter 1220 can transmit signals generated by other components of the device. In some examples, transmitter 1220 may coexist with receiver 1210 in a transceiver module. For example, transmitter 1220 may be a reference... Figure 15 Examples of various aspects of the transceiver 1535 described. Transmitter 1220 may include a single antenna, or it may include an array of antennas.

[0169] Figure 13 A block diagram 1300 of a wireless device 1305 supporting autonomous uplink transmission technology using shared radio frequency spectrum is shown according to various aspects of this disclosure. The wireless device 1305 may be as described in reference... Figure 1 and 12 Examples of various aspects of the described wireless device 1205 or base station 105. Wireless device 1305 may include a receiver 1310, a base station autonomous uplink manager 1315, and a transmitter 1320. Wireless device 1305 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0170] Receiver 1310 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to autonomous uplink transmission technologies using shared radio frequency spectrum). The information can be transmitted to other components of the device. Receiver 1310 can be a reference... Figure 15 Examples of various aspects of the transceiver 1535 described.

[0171] Base station autonomous uplink manager 1315 can be a reference Figure 15Examples of various aspects of the described base station autonomous uplink manager 1315. The base station autonomous uplink manager 1315 may also include an autonomous uplink configuration manager 1325, an AUL channel access manager 1330, a data manager 1335, an AUL activation component 1340, and a control information component 1345.

[0172] The Autonomous Uplink Configuration Manager 1325 can configure the UE for autonomous uplink transmission in a shared RF band and transmit RRC signaling to the UE including autonomous uplink configuration for unscheduled autonomous uplink transmission in a shared RF band.

[0173] The AUL channel access manager 1330 can receive autonomous uplink transmissions from a UE on a shared RF band. These autonomous uplink transmissions include one or more channel access parameters. In some cases, the channel access parameters include the number of subframes available for downlink transmission based on the time difference between the uplink transmission and the MCOT acquired by the UE. In some cases, the base station can transmit one or more transmissions during this time difference, and transmissions to one or more UEs other than the UE that acquired the MCOT are blocked during this time difference.

[0174] Data Manager 1335 can transmit downlink transmissions on a shared RF band based on one or more of the channel access parameters.

[0175] The AUL activation component 1340 can determine whether autonomous uplink transmission should be activated for the UE and whether autonomous uplink transmission should be deactivated for the UE.

[0176] Control information component 1345 may transmit a DCI indicating activation of the autonomous uplink transmission in response to determining that the autonomous uplink transmission should be activated for the UE, and a DCI indicating deactivation of the autonomous uplink transmission in response to determining that the autonomous uplink transmission should be deactivated for the UE. In some cases, the autonomous uplink transmission includes uplink control information containing one or more of the following: HARQ identifier, uplink transmission burst length, MCOT, RV indication, NDI, or AUL-RNTI. In some cases, the downlink transmission includes an A-DCI associated with one or more autonomous uplink transmissions. In some cases, the DCI includes a CRC field scrambled with the UE's AUL-RNTI, and the value of the AUL-RNTI indicates whether the autonomous uplink transmission is activated or deactivated.

[0177] Transmitter 1320 can transmit signals generated by other components of the device. In some examples, transmitter 1320 may coexist with receiver 1310 in a transceiver module. For example, transmitter 1320 may be a reference... Figure 15Examples of various aspects of the transceiver 1535 described. Transmitter 1320 may include a single antenna, or it may include an array of antennas.

[0178] Figure 14 A block diagram 1400 is shown of a base station autonomous uplink manager 1415 supporting autonomous uplink transmission technology using shared radio frequency spectrum, according to various aspects of this disclosure. The base station autonomous uplink manager 1415 may be a reference... Figure 12 , 13 Examples of various aspects of the Base Station Autonomous Uplink Manager 1415 described in section 15 are provided. The Base Station Autonomous Uplink Manager 1415 may include an Autonomous Uplink Configuration Manager 1420, an AUL Channel Access Manager 1425, a Data Manager 1430, an AUL Activation Component 1435, a Control Information Component 1440, a HARQ Manager 1445, and a MIMO Manager 1450. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses).

[0179] The Autonomous Uplink Configuration Manager 1420 can configure the UE for autonomous uplink transmission in a shared RF band and transmit RRC signaling to the UE including autonomous uplink configuration for unscheduled autonomous uplink transmission in a shared RF band.

[0180] The AUL channel access manager 1425 can receive autonomous uplink transmissions from a UE on a shared RF band. These autonomous uplink transmissions include one or more channel access parameters. In some cases, the channel access parameters include the number of subframes available for downlink transmission based on the time difference between the uplink transmission and the MCOT acquired by the UE. In some cases, the base station can transmit one or more transmissions during this time difference, and transmissions to one or more UEs other than the UE that acquired the MCOT are blocked during this time difference.

[0181] Data Manager 1430 can transmit downlink transmissions on a shared RF band based on one or more of the channel access parameters.

[0182] AUL Activation Component 1435 can determine whether autonomous uplink transmission should be activated for the UE and whether autonomous uplink transmission should be deactivated for the UE.

[0183] Control information component 1440 may transmit a DCI indicating activation of autonomous uplink transmission in response to determining that the autonomous uplink transmission should be activated for the UE, and a DCI indicating deactivation of autonomous uplink transmission in response to determining that the autonomous uplink transmission should be deactivated for the UE. In some cases, the autonomous uplink transmission includes uplink control information containing one or more of the following: HARQ identifier, uplink transmission burst length, MCOT, RV indication, NDI, or AUL-RNTI. In some cases, the downlink transmission includes an A-DCI associated with one or more autonomous uplink transmissions. In some cases, the DCI includes a CRC field scrambled with the UE's AUL-RNTI, and the value of the AUL-RNTI indicates whether the autonomous uplink transmission is activated or deactivated.

[0184] The HARQ manager 1445 performs HARQ feedback processing. In some cases, A-DCI includes one or more of the following: a bit mapping of feedback information associated with one or more feedback procedures related to one or more autonomous uplink transmissions, one or more ACK / NACK indications, or uplink power control information. In some cases, bits from two or more feedback procedures are bundled.

[0185] The MIMO Manager 1450 can enable autonomous uplink transmission on one or more transmit antennas based on a Multiple-Input Multiple-Output (MIMO) configuration.

[0186] Figure 15 A diagram is shown of a system 1500 including a device 1505 supporting autonomous uplink transmission technology using shared radio frequency spectrum, according to various aspects of this disclosure. Device 1505 may be, for example, as described above with reference to... Figure 1 Examples of the components of the described base station 105 may be included. Device 1505 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, including a base station autonomous uplink manager 1515, a processor 1520, a memory 1525, software 1530, a transceiver 1535, an antenna 1540, a network communication manager 1545, and a base station communication manager 1550. These components may be in electronic communication via one or more buses (e.g., bus 1510). Device 1505 may wirelessly communicate with one or more UEs 115.

[0187] Processor 1520 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1520 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1520. Processor 1520 may be configured to execute computer-readable instructions stored in memory to perform various functions (e.g., functions or tasks supporting autonomous uplink transmission technologies using shared radio frequency spectrum).

[0188] Memory 1525 may include RAM and ROM. Memory 1525 may store computer-readable, computer-executable software 1530, including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, memory 1525 may particularly include a BIOS that controls basic hardware and / or software operations, such as interaction with peripheral components or devices.

[0189] Software 1530 may include code for implementing various aspects of this disclosure, including code for supporting autonomous uplink transmission technologies using shared radio frequency spectrum. Software 1530 may be stored in a non-transient computer-readable medium, such as system memory or other memory. In some cases, software 1530 may not be executed directly by a processor, but may instead enable a computer (e.g., at the time of compilation and execution) to perform the functions described herein.

[0190] Transceiver 1535 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, transceiver 1535 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 1535 may also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and to demodulate packets received from the antenna.

[0191] In some cases, the wireless device may include a single antenna 1540. However, in other cases, the device may have more than one antenna 1540, which may be able to transmit or receive multiple wireless transmissions concurrently.

[0192] The network communication manager 1545 can manage communication with the core network (e.g., via one or more wired backhaul links). For example, the network communication manager 1545 can manage the delivery of data communication by client devices (such as one or more UEs 115).

[0193] The base station communication manager 1550 manages communication with other base stations 105 and may include a controller or scheduler for cooperating with other base stations 105 to control communication with the UE 115. For example, the base station communication manager 1550 may coordinate the scheduling of transmissions to the UE 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, the base station communication manager 1550 may provide an X2 interface within Long Term Evolution (LTE) / LTE-A wireless communication network technology to facilitate communication between base stations 105.

[0194] Figure 16 A flowchart illustrating a method 1600 for autonomous uplink transmission using shared radio frequency spectrum according to various aspects of this disclosure is shown. Operation of method 1600 may be implemented by a UE 115 or its components as described herein. For example, operation of method 1600 may be performed by, as described in reference... Figures 8 to 11 The described UE autonomous uplink manager performs this function. In some examples, the UE 115 can execute a set of code to control the functional elements of the device to perform the following functions. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the following functions.

[0195] In box 1605, UE 115 can contend for access to a channel in a shared RF band based on an autonomous uplink configuration indicating the transmission window available for autonomous uplink transmission. The operation of box 1605 can be referenced... Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1605 may be performed as described in the reference. Figures 8 to 11 The LBT manager described is used to execute this.

[0196] In block 1610, UE 115 may determine one or more channel access parameters, at least in part, based on one or more of the duration of an uplink transmission to be transmitted on a channel in a shared RF band or the TA used for that uplink transmission. Operation of block 1610 may be based on reference... Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1610 may be performed as described in the reference. Figures 8 to 11 The control information component described is used to execute this.

[0197] In block 1615, UE 115 can transmit uplink transmissions on a channel in a shared RF band according to an autonomous uplink configuration, wherein the uplink transmissions indicate one or more of the channel access parameters. The operation of block 1615 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1615 may be performed as described in the reference. Figures 8 to 11 The described data manager is used to execute this.

[0198] Figure 17 A flowchart illustrating a method 1700 for autonomous uplink transmission using shared radio frequency spectrum according to various aspects of this disclosure is shown. Operation of method 1700 may be implemented by a UE 115 or its components as described herein. For example, operation of method 1700 may be implemented by, as referred to... Figures 8 to 11 The described UE autonomous uplink manager performs this function. In some examples, the UE 115 can execute a set of code to control the functional elements of the device to perform the following functions. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the following functions.

[0199] In box 1705, UE 115 can contend for access to a channel in a shared RF band based on an autonomous uplink configuration indicating the transmission window available for autonomous uplink transmission. The operation of box 1705 can be referenced... Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1705 may be performed as described in the reference. Figures 8 to 11 The LBT manager described is used to execute this.

[0200] In block 1710, UE 115 may determine one or more channel access parameters, at least in part, based on one or more of the duration of an uplink transmission to be transmitted on a channel in a shared RF band or the TA used for that uplink transmission. Operation of block 1710 may be based on reference... Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1710 may be performed as described in the reference. Figures 8 to 11 The control information component described is used to execute this.

[0201] In block 1715, UE 115 can modify the waveform of the uplink transmission at least in part based on TA. The operation of block 1715 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1715 may be performed as described in the reference. Figures 8 to 11 The described data manager is used to execute this.

[0202] In block 1720, UE 115 can transmit uplink transmissions on a channel in a shared RF band according to an autonomous uplink configuration, wherein the uplink transmissions indicate one or more of the channel access parameters. The operation of block 1720 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1720 may be performed as described in the reference. Figures 8 to 11 The described data manager is used to execute this.

[0203] Figure 18A flowchart illustrating a method 1800 for autonomous uplink transmission using shared radio frequency spectrum according to various aspects of this disclosure is shown. Operation of method 1800 may be implemented by a UE 115 or its components as described herein. For example, operation of method 1800 may be implemented by, as referred to... Figures 8 to 11 The described UE autonomous uplink manager performs this function. In some examples, the UE 115 can execute a set of code to control the functional elements of the device to perform the following functions. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the following functions.

[0204] In box 1805, UE 115 can contend for access to a channel in a shared RF band based on an autonomous uplink configuration indicating the transmission window available for autonomous uplink transmission. The operation of box 1805 can be referenced... Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1805 may be performed as described in the reference. Figures 8 to 11 The LBT manager described is used to execute this.

[0205] In block 1810, UE 115 may determine one or more channel access parameters, at least in part, based on one or more of the duration of an uplink transmission to be transmitted on a channel in a shared RF band or the TA used for that uplink transmission. Operation of block 1810 may be based on reference... Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1810 may be performed as described in the reference. Figures 8 to 11 The control information component described is used to execute this.

[0206] In box 1815, UE 115 can identify the time at which subsequent downlink transmission begins after uplink transmission. The operation of box 1815 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1815 may be performed as described in the reference. Figures 8 to 11 The time interval component described is used to perform this.

[0207] In box 1820, UE 115 can format an uplink transmission to occupy a channel in a shared RF band until the start of a subsequent downlink transmission, wherein the transmitter of the subsequent downlink transmission performs CCA to occupy the maximum time gap between the uplink transmission and the subsequent downlink transmission. The operation of box 1820 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1820 may be performed as described in the reference. Figures 8 to 11 The time interval component described is used to perform this.

[0208] In block 1825, UE 115 can transmit uplink transmissions on a channel in a shared RF band according to an autonomous uplink configuration, wherein the uplink transmissions indicate one or more of the channel access parameters. The operation of block 1825 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1825 may be performed as described in the reference. Figures 8 to 11 The described data manager is used to execute this.

[0209] Figure 19 A flowchart illustrating a method 1900 for autonomous uplink transmission using shared radio frequency spectrum according to various aspects of this disclosure is shown. Operation of method 1900 may be implemented by a UE 115 or its components as described herein. For example, operation of method 1900 may be implemented by, as referred to... Figures 8 to 11 The described UE autonomous uplink manager performs this function. In some examples, the UE 115 can execute a set of code to control the functional elements of the device to perform the following functions. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the following functions.

[0210] In box 1905, UE 115 can contend for access to a channel in a shared RF band based on an autonomous uplink configuration indicating the transmission window available for autonomous uplink transmission. The operation of box 1905 can be referenced... Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1905 may be performed as described in the reference. Figures 8 to 11 The LBT manager described is used to execute this.

[0211] In block 1910, UE 115 may determine one or more channel access parameters, at least in part, based on one or more of the duration of an uplink transmission to be transmitted on a channel in a shared RF band or the TA used for that uplink transmission. Operation of block 1910 may be based on reference... Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1910 may be performed as described in the reference. Figures 8 to 11 The control information component described is used to execute this.

[0212] In block 1915, UE 115 can transmit uplink transmissions on a channel in a shared RF band according to an autonomous uplink configuration, wherein the uplink transmissions indicate one or more of the channel access parameters. The operation of block 1915 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1915 may be performed as described in the reference. Figures 8 to 11 The described data manager is used to execute this.

[0213] In block 1920, UE 115 may transmit to the base station the time difference between the MCOT and the duration of the uplink transmission, wherein the base station may transmit one or more transmissions during the time difference, and one or more other transmitters are blocked from transmitting during the time difference. The operation of block 1920 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 1920 may be performed as described in the reference. Figures 8 to 11 The time interval component described is used to perform this.

[0214] Figure 20 A flowchart illustrating a method 2000 for autonomous uplink transmission using shared radio frequency spectrum according to various aspects of this disclosure is shown. Operation of method 2000 may be implemented by a UE 115 or its components as described herein. For example, operation of method 2000 may be implemented by referring to... Figures 8 to 11 The described UE autonomous uplink manager performs this function. In some examples, the UE 115 can execute a set of code to control the functional elements of the device to perform the following functions. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the following functions.

[0215] In box 2005, UE 115 can contend for access to a channel in a shared RF band based on an autonomous uplink configuration indicating the transmission window available for autonomous uplink transmission. The operation of box 2005 can be referenced... Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2005 may be performed as described in the reference. Figures 8 to 11 The LBT manager described is used to execute this.

[0216] In block 2010, UE 115 may determine one or more channel access parameters, at least in part, based on one or more of the duration of an uplink transmission to be transmitted on a channel in a shared RF band or the TA used for that uplink transmission. Operation of block 2010 may be based on reference... Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2010 may be performed as described in the reference. Figures 8 to 11 The control information component described is used to execute this.

[0217] In block 2015, UE 115 can transmit uplink transmissions on a channel in a shared RF band according to its autonomous uplink configuration, wherein the uplink transmissions indicate one or more of the channel access parameters. Operation of block 2015 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2015 may be performed as described in the reference. Figures 8 to 11 The described data manager is used to execute this.

[0218] In box 2020, UE 115 can determine which additional data to transmit after the transmission window. The operation of box 2020 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2020 may be performed as described in the reference. Figures 8 to 11 The described data manager is used to execute this.

[0219] In box 2025, UE 115 may transmit one or more subsequent uplink transmissions outside the transmission window after an uplink transmission, when the MCOT is determined as part of the contention for access to a channel in the shared RF band. The operation of box 2025 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2025 may be performed as described in the reference. Figures 8 to 11 The described data manager is used to execute this.

[0220] Figure 21 A flowchart illustrating a method 2100 for autonomous uplink transmission using shared radio frequency spectrum according to various aspects of this disclosure is shown. Operation of method 2100 may be implemented by a UE 115 or its components as described herein. For example, operation of method 2100 may be implemented by referring to... Figures 8 to 11 The described UE autonomous uplink manager performs this function. In some examples, the UE 115 can execute a set of code to control the functional elements of the device to perform the following functions. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the following functions.

[0221] In box 2105, UE 115 may receive RRC signaling including autonomous uplink configuration for unscheduled autonomous uplink transmission in a shared RF band. Operation of box 2105 may be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2105 may be performed as described in the reference. Figures 8 to 11 The described autonomous uplink configuration manager is used to execute this.

[0222] In box 2110, UE 115 can receive DCI that activates autonomous uplink transmission. The operation of box 2110 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2110 may be performed as described in the reference. Figures 8 to 11 The control information component described is used to execute this.

[0223] In block 2115, UE 115 can contend for access to a channel in the shared RF band based on its autonomous uplink configuration. The operation of block 2115 can be referenced... Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2115 may be performed as described in the reference. Figures 8 to 11The LBT manager described is used to execute this.

[0224] In block 2120, UE 115 can transmit one or more autonomous uplink transmissions on a channel in a shared RF band, based on autonomous uplink configuration. Operation of block 2120 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2120 may be performed as described in the reference. Figures 8 to 11 The described data manager is used to execute this.

[0225] In optional box 2125, UE 115 can receive subsequent DCI with autonomous uplink transmission disabled. The operation of box 2125 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2125 may be performed as described in the reference. Figures 8 to 11 The control information component described is used to execute this.

[0226] In optional block 2130, UE 115 may interrupt contention for access to a channel in the shared RF band in response to receiving a subsequent DCI indicating discontinuation of autonomous uplink transmission. The operation of block 2130 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2130 may be performed as described in the reference. Figures 8 to 11 The described data manager is used to execute this.

[0227] Figure 22 A flowchart illustrating a method 2200 for autonomous uplink transmission using shared radio frequency spectrum according to various aspects of this disclosure is shown. Operation of method 2200 may be implemented by a UE 115 or its components as described herein. For example, operation of method 2200 may be implemented by, as referred to... Figures 8 to 11 The described UE autonomous uplink manager performs this function. In some examples, the UE 115 can execute a set of code to control the functional elements of the device to perform the following functions. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the following functions.

[0228] In box 2205, UE 115 may identify an autonomous uplink configuration for unscheduled uplink transmission in a shared RF band. Operation of box 2205 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2205 may be performed as described in the reference. Figures 8 to 11 The described autonomous uplink configuration manager is used to execute this.

[0229] In box 2210, UE 115 can contend for access to a channel in the shared RF band based on its autonomous uplink configuration. The operation of box 2210 can be referenced. Figures 1 to 7The described method is used to perform this operation. In some examples, aspects of the operation of box 2210 may be performed as described in the reference. Figures 8 to 11 The LBT manager described is used to execute this.

[0230] In block 2215, UE 115 can determine uplink control information and uplink shared channel information for uplink transmission to be carried out on a channel sharing the RF band. The operation of block 2215 can be referenced... Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2215 may be performed as described in the reference. Figures 8 to 11 The control information component described is used to execute this.

[0231] In block 2220, UE 115 can perform rate matching of uplink shared channel information with respect to uplink control information in uplink transmission. The operation of block 2220 can be performed according to reference... Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2220 may be performed as described in the reference. Figures 8 to 11 The described data manager is used to execute this.

[0232] In block 2225, UE 115 can transmit uplink data on a channel within a shared RF band, based on its autonomous uplink configuration. The operation of block 2225 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2225 may be performed as described in the reference. Figures 8 to 11 The described data manager is used to execute this.

[0233] Figure 23 A flowchart illustrating a method 2300 for autonomous uplink transmission using shared radio frequency spectrum according to various aspects of this disclosure is shown. Operation of method 2300 may be implemented by a UE 115 or its components as described herein. For example, operation of method 2300 may be implemented by referring to... Figures 8 to 11 The described UE autonomous uplink manager performs this function. In some examples, the UE 115 can execute a set of code to control the functional elements of the device to perform the following functions. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the following functions.

[0234] In box 2305, UE 115 may identify an autonomous uplink configuration for unscheduled uplink transmission in a shared RF band. Operation of box 2305 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2305 may be performed as described in the reference. Figures 8 to 11 The described autonomous uplink configuration manager is used to execute this.

[0235] In block 2310, UE 115 can receive an A-DCI associated with one or more autonomous uplink transmissions. Operation of block 2310 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2310 may be performed as described in the reference. Figures 8 to 11 The control information component described is used to execute this.

[0236] In box 2315, UE 115 can transmit autonomous uplink transmissions on a shared RF band based on autonomous uplink configuration and A-DCI. The operation of box 2315 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2315 may be performed as described in the reference. Figures 8 to 11 The described data manager is used to execute this.

[0237] Figure 24 A flowchart illustrating a method 2400 for autonomous uplink transmission using shared radio frequency spectrum according to various aspects of this disclosure is shown. Operation of method 2400 may be implemented by a base station 105 or its components as described herein. For example, operation of method 2400 may be implemented by, as referred to... Figures 12 to 15 The described base station autonomous uplink manager performs this function. In some examples, base station 105 can execute a set of code to control the functional elements of the device to perform the following functions. Additionally or alternatively, base station 105 may use dedicated hardware to perform aspects of the following functions.

[0238] In block 2405, base station 105 can configure the UE for autonomous uplink transmission in a shared RF band. Operation of block 2405 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2405 may be performed as described in the reference. Figures 12 to 15 The described autonomous uplink configuration manager is used to execute this.

[0239] In block 2410, base station 105 can receive autonomous uplink transmissions from UE on a shared RF band, the autonomous uplink transmissions including one or more channel access parameters. Operation of block 2410 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2410 may be performed as described in the reference. Figures 12 to 15 The AUL Channel Access Manager, as described, is used to perform this.

[0240] In box 2415, base station 105 can transmit downlink transmissions on the shared RF band according to one or more of the channel access parameters. The operation of box 2415 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2415 may be performed as described in the reference. Figures 12 to 15The described data manager is used to execute this.

[0241] Figure 25 A flowchart illustrating a method 2500 for autonomous uplink transmission using shared radio frequency spectrum according to various aspects of this disclosure is shown. Operation of method 2500 may be implemented by a base station 105 or its components as described herein. For example, operation of method 2500 may be implemented by, as referred to... Figures 12 to 15 The described base station autonomous uplink manager performs this function. In some examples, base station 105 can execute a set of code to control the functional elements of the device to perform the following functions. Additionally or alternatively, base station 105 may use dedicated hardware to perform aspects of the following functions.

[0242] In block 2505, base station 105 may transmit RRC signaling to the UE including autonomous uplink configuration for unscheduled autonomous uplink transmission in the shared RF band. Operation of block 2505 may be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2505 may be performed as described in the reference. Figures 12 to 15 The described autonomous uplink configuration manager is used to execute this.

[0243] In box 2510, base station 105 can determine that autonomous uplink transmission should be activated for the UE. The operation of box 2510 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2510 may be performed as described in the reference. Figures 12 to 15 The described AUL activation component is used to perform this.

[0244] In block 2515, base station 105 may transmit a DCI to activate autonomous uplink transmission in response to determining that autonomous uplink transmission should be activated for the UE. The operation of block 2515 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2515 may be performed as described in the reference. Figures 12 to 15 The control information component described is used to execute this.

[0245] In box 2520, base station 105 can receive one or more autonomous uplink transmissions on a channel in a shared RF band, based on autonomous uplink configuration. The operation of box 2520 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2520 may be performed as described in the reference. Figures 12 to 15 The receiver described is used to perform this action.

[0246] In box 2525, base station 105 can determine that autonomous uplink transmission for the UE should be disabled. The operation of box 2525 can be performed according to reference... Figures 1 to 7The described method is used to perform this operation. In some examples, aspects of the operation of box 2525 may be performed as described in the reference. Figures 12 to 15 The described AUL activation component is used to perform this.

[0247] In block 2530, base station 105 may transmit a DCI to disable autonomous uplink transmission in response to determining that autonomous uplink transmission should be disabled for the UE. The operation of block 2530 can be referenced. Figures 1 to 7 The described method is used to perform this operation. In some examples, aspects of the operation of box 2530 may be performed as described in the reference. Figures 12 to 15 The control information component described is used to execute this.

[0248] It should be noted that the above methods describe possible implementations, and the operations and steps can be rearranged or otherwise modified, and other implementations are also possible. Furthermore, aspects from two or more methods can be combined.

[0249] The techniques described in this article can be used in various wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), and others. The terms "system" and "network" are often used interchangeably. Code Division Multiple Access (CDMA) systems can implement radio technologies such as CDMA2000 and Universal Terrestrial Radio Access (UTRA). CDMA2000 encompasses the IS-2000, IS-95, and IS-856 standards. Versions of IS-2000 are often referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is often referred to as CDMA2000 1xEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes Wideband CDMA (WCDMA) and other CDMA variants. Time Division Multiple Access (TDMA) systems can implement radio technologies such as Global System for Mobile Communications (GSM).

[0250] Orthogonal Frequency Division Multiple Access (OFDMA) systems can implement radio technologies such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, and Flash-OFDM. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). 3GPP Long Term Evolution (LTE) and LTE Advanced (LTE-A) are UMTS versions using E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, NR, and Global System for Mobile Communications (GSM) are described in documents from an organization called the 3rd Generation Partnership Project (3GPP). CDMA2000 and UMB are described in documents from an organization called 3rd Generation Partnership Project 2 (3GPP2). The technologies described herein can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. Although various aspects of LTE or NR systems may be described for illustrative purposes, and the terms LTE or NR are used in most of the descriptions above, the techniques described herein may also be applied to applications beyond LTE or NR.

[0251] In LTE / LTE-A networks (including those described herein), the term evolved B-node (eNB) can generally be used to describe a base station. One or more wireless communication systems described herein can include heterogeneous LTE / LTE-A or NR networks, where different types of evolved B-nodes (eNBs) provide coverage across various geographic areas. For example, each eNB, gNB, or base station can provide communication coverage for macrocells, small cells, or other types of cells. Depending on the context, the term "cell" can be used to describe a base station, a carrier or component carrier associated with a base station, or the coverage area of ​​a carrier or base station (e.g., a sector, etc.).

[0252] A base station may include, or may be referred to by those skilled in the art, as a base transceiver station, radio base station, access point, radio transceiver, B-node, evolved B-node (eNB), next-generation B-node (gNB), home B-node, home evolved B-node, or any other suitable term. The geographical coverage area of ​​a base station may be divided into sectors that constitute part of that coverage area. One or more wireless communication systems described herein may include different types of base stations (e.g., macro or small cell base stations). The UE described herein may be able to communicate with various types of base stations and network equipment (including macro eNBs, small cell eNBs, gNBs, relay base stations, etc.). There may be overlapping geographical coverage areas using different technologies.

[0253] Macrocells typically cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access by UEs with service subscriptions to a network provider. In contrast, small cells are low-power base stations that can operate in the same or different (e.g., licensed, unlicensed, etc.) frequency bands as macrocells. Depending on the examples, small cells may include picocells, femtocells, and microcells. A picocell, for example, may cover a smaller geographic area and allow unrestricted access by UEs with service subscriptions to a network provider. A femtocell may also cover a smaller geographic area (e.g., a residential area) and provide restricted access by UEs associated with that femtocell (e.g., UEs in a closed subscriber group (CSG), UEs of users in that residence, etc.). An eNB used for a macrocell may be referred to as a macro eNB. An eNB used for a small cell may be referred to as a small cell eNB, pico eNB, femtocell eNB, or home eNB. An eNB may support one or more (e.g., two, three, four, etc.) cells (e.g., component carriers).

[0254] The one or more wireless communication systems described herein can support synchronous or asynchronous operation. For synchronous operation, each base station can have similar frame timing, and transmissions from different base stations can be approximately time-aligned. For asynchronous operation, each base station can have different frame timing, and transmissions from different base stations can be time-disaligned. The techniques described herein can be used for both synchronous and asynchronous operation.

[0255] The downlink transmissions described in this article can also be referred to as forward link transmissions, while the uplink transmissions can also be referred to as reverse link transmissions. Each communication link described in this article—for example, including… Figure 1 and 2 The wireless communication systems 100 and 200 may include one or more carriers, wherein each carrier may be a signal composed of multiple subcarriers (e.g., waveform signals of different frequencies).

[0256] This document, illustrated with reference to the accompanying drawings, describes exemplary configurations but does not represent all examples that can be implemented or fall within the scope of the claims. The term "exemplary" as used herein means "serving as an example, instance, or illustration" and does not mean "superior to" or "outperforms" other examples. This detailed description includes specific details to provide an understanding of the described techniques. However, these techniques can be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0257] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, components of the same type may be distinguished by a dash following the reference numeral and a second reference numeral used to differentiate between similar components. If only the first reference numeral is used in the description, the description may apply to any of the similar components having the same first reference numeral regardless of the second reference numeral.

[0258] The information and signals described herein can be represented using any of a wide variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or light particles, or any combination thereof.

[0259] The various illustrative blocks and modules described herein can be implemented or executed using a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but in alternatives, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors working in conjunction with a DSP core, or any other such configuration).

[0260] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored or transmitted as one or more instructions or code on a computer-readable medium. Other examples and implementations fall within the scope of this disclosure and the appended claims. For example, due to the nature of software, the above-described functions can be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Features implementing the functions can also be physically located in various locations, including being distributed such that different parts of the function are implemented in different physical locations. Additionally, as used herein (including in the claims), the word "or" used in an enumeration of items (e.g., an enumeration of items accompanied by phrases such as "at least one" or "one or more") indicates an inclusive enumeration, such that an enumeration of at least one of, for example, A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Similarly, as used herein, the phrase "based on" should not be construed as referencing a closed set of conditions. For example, an exemplary step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same way as the phrase "at least partially based on".

[0261] Computer-readable media includes both non-transient computer storage media and communication media, encompassing any medium that facilitates the transfer of a computer program from one location to another. Non-transient storage media can be any available medium accessible to a general-purpose or special-purpose computer. By way of example and not limitation, non-transient computer-readable media may include RAM, ROM, electrically erasable programmable read-only memory (EEPROM), compact disc (CD) ROM or other optical disc storage, magnetic disk storage or other magnetic storage devices, or any other non-transient medium that can be used to carry or store desired program code in the form of instructions or data structures and is accessible to a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Any connection is also legitimately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then that coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave are included in the definition of media. As used in this article, disk and disc include CDs, laser discs, optical discs, DVDs, floppy disks, and Blu-ray discs, where disks often magnetically reproduce data while discs optically reproduce data using lasers. Combinations of these media are also included within the scope of computer-readable media.

[0262] The description provided herein is intended to enable those skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the universal principles defined herein can be applied to other variations without departing from the scope of this disclosure. Thus, this disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication, comprising: Receive radio resource control (RRC) signaling from the access network node, including autonomous uplink configuration for sharing the radio spectrum band with the access network node for unscheduled autonomous uplink transmissions; Receive downlink control information (DCI) used to activate autonomous uplink transmission; The autonomous uplink transmission is activated at least in part based on receiving the DCI; During the configured time duration, activity on the channel of the shared RF band is sensed at least in part based on activating the autonomous uplink transmission in order to contend for access to the channel of the shared RF band according to the autonomous uplink configuration; as well as According to the autonomous uplink configuration, one or more autonomous uplink transmissions are transmitted to the access network node on the channel of the shared RF band.

2. The method of claim 1, further comprising: Receive subsequent DCIs that disable the autonomous uplink transmission; as well as In response to receiving the subsequent DCI, contention for access to the channel in the shared RF band is interrupted.

3. The method as described in claim 1, wherein, The DCI includes a Cyclic Redundancy Check (CRC) field scrambled with an identifier.

4. The method of claim 3, wherein, The value of the identifier indicates that the DCI is associated with the autonomous uplink transmission.

5. The method of claim 1, wherein, The autonomous uplink configuration enables autonomous uplink transmission on one or more transmit antennas based on a multiple-input multiple-output (MIMO) configuration.

6. The method of claim 1, further comprising: The uplink control information (UCI) included in one or more autonomous uplink transmissions sends a signaling notification to the access network node to inform it of the channel access parameters.

7. The method of claim 6, wherein the UCI comprises: An indication associated with the gap between the one or more autonomous uplink transmissions and subsequent downlink transmissions performed by the access network node.

8. The method of claim 6, wherein the UCI comprises: The number of subframes used by the access network node for subsequent downlink transmission.

9. The method of claim 6, wherein the UCI includes a channel contention procedure priority class.

10. The method of claim 6, wherein the UCI includes an indication of the maximum channel occupancy time of the access network node sharing the UE.

11. An apparatus for wireless communication, comprising: processor; Memory coupled to the processor; as well as Instructions, which are stored in the memory and can be executed by the processor, to cause the device to: Receive radio resource control (RRC) signaling from the access network node, including autonomous uplink configuration for sharing the radio spectrum band with the access network node for unscheduled autonomous uplink transmissions; Receive downlink control information (DCI) used to activate autonomous uplink transmission; The autonomous uplink transmission is activated at least in part based on receiving the DCI; During the configured time duration, activity on the channel of the shared RF band is sensed at least in part based on activating the autonomous uplink transmission in order to contend for access to the channel of the shared RF band according to the autonomous uplink configuration; as well as According to the autonomous uplink configuration, one or more autonomous uplink transmissions are transmitted to the access network node on the channel of the shared RF band.

12. The apparatus of claim 11, wherein, The instructions can further be executed by the processor to cause the device to: Receive subsequent DCIs that disable the autonomous uplink transmission; and In response to receiving the subsequent DCI, contention for access to the channel in the shared RF band is interrupted.

13. The apparatus of claim 11, wherein, The DCI includes a Cyclic Redundancy Check (CRC) field scrambled with an identifier.

14. The apparatus of claim 13, wherein, The value of the identifier indicates that the DCI is associated with the autonomous uplink transmission.

15. The apparatus of claim 11, wherein, The autonomous uplink configuration enables autonomous uplink transmission on one or more transmit antennas based on a multiple-input multiple-output (MIMO) configuration.

16. The apparatus of claim 11, wherein, The instructions can further be executed by the processor to cause the device to: The uplink control information (UCI) included in one or more autonomous uplink transmissions sends a signaling notification to the access network node to inform it of the channel access parameters.

17. The apparatus of claim 16, wherein the UCI comprises: This is associated with the gap between the one or more autonomous uplink transmissions and the subsequent downlink transmissions performed by the access network node.

18. The apparatus of claim 16, wherein the UCI comprises: The number of subframes used by the access network node for subsequent downlink transmission.

19. The apparatus of claim 16, wherein the UCI includes a channel contention procedure priority class.

20. The apparatus of claim 16, wherein the UCI includes an indication of the maximum channel occupancy time of the access network node sharing the UE.

21. A device for wireless communication, comprising: A means for receiving from an access network node radio resource control (RRC) signaling including autonomous uplink configuration for sharing an unscheduled autonomous uplink transmission with the access network node in a radio spectrum band; A means for receiving downlink control information (DCI) used to activate autonomous uplink transmission; A means for activating the autonomous uplink transmission based at least in part on receiving the DCI; A means for sensing activity on a channel of the shared RF band during a configured time duration, at least in part based on activating the autonomous uplink transmission, in order to contend for access to the channel of the shared RF band according to the autonomous uplink configuration. as well as A means for transmitting one or more autonomous uplink transmissions to the access network node on the channel in the shared RF band according to the autonomous uplink configuration.

22. The apparatus of claim 21, further comprising: A means for receiving subsequent DCIs that disable the autonomous uplink transmission; as well as A means for interrupting contention for access to the channel of the shared RF band in response to receiving the subsequent DCI.

23. The device as claimed in claim 21, wherein, The DCI includes a Cyclic Redundancy Check (CRC) field scrambled with an identifier.

24. The device as claimed in claim 23, wherein, The value of the identifier indicates that the DCI is associated with the autonomous uplink transmission.

25. The device as claimed in claim 21, wherein, The autonomous uplink configuration enables autonomous uplink transmission on one or more transmit antennas based on a multiple-input multiple-output (MIMO) configuration.

26. The apparatus of claim 21, further comprising: A means for sending signaling notification of channel access parameters to the access network node in the uplink control information (UCI) included in one or more autonomous uplink transmissions.

27. The device of claim 26, wherein the UCI comprises: An indication associated with the gap between the one or more autonomous uplink transmissions and subsequent downlink transmissions performed by the access network node.

28. The device of claim 26, wherein the UCI comprises: The number of subframes used by the access network node for subsequent downlink transmission.

29. The device of claim 26, wherein the UCI includes a channel contention procedure priority class.

30. The device of claim 26, wherein the UCI includes an indication of the maximum channel occupancy time of the access network node sharing the UE.

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