564 results about "Channel occupancy" patented technology

In an example from the perspective of a first User Equipment (UE), in response to performing successful listen before talk (LBT), the first UE determines a channel occupancy time (COT). The first UE determines whether or not a second sidelink transmission, to be performed by a second UE, is within the COT. The first UE determines information, associated with LBT type and / or cyclic prefix (CP) extension, for inclusion in a first sidelink transmission in the COT, wherein whether the information includes first information associated with LBT type and / or CP extension or the information includes second information associated with LBT type and / or CP extension is based on the determination of whether or not the second sidelink transmission is within the COT. The UE transmits, to the second UE, the first sidelink transmission in the COT. The first sidelink transmission includes the information. The second sidelink transmission is associated with the first sidelink transmission.

Various embodiments herein relate to identifying an indication of a channel access priority class (CAPC); identifying, based on the CAPC and a table related to the CAPC, a length of a channel occupancy time (COT); and participating in a sidelink (SL) communication in the unlicensed spectrum based on the COT. Other embodiments may be described and / or claimed.

A first wireless device receives first sidelink control information comprising one or more parameters indicating a reserved resource for a second sidelink transmission. The first wireless device initiates a channel occupancy for a first sidelink transmission before the reserved resource, wherein initiating the channel occupancy is based on: a first type of channel access procedure; and an energy detection threshold for channel occupancy sharing. The first wireless device transmits a second sidelink control information indicating sharing the channel occupancy with the second wireless device for the second sidelink transmission in the channel occupancy. The first wireless device transmits, using a second type of channel access procedure and based on sharing the channel occupancy with the second wireless device, a third sidelink transmission within the channel occupancy and after the second sidelink transmission.

A method for performing wireless communication by a first device, and an apparatus supporting same are provided. The method may comprise the steps of: receiving information related to channel occupancy time (COT) from a second device; receiving a first physical sidelink shared channel (PSSCH) from the second device; determining a first PSFCH resource for first physical sidelink feedback channel (PSFCH) transmission related to the first PSSCH; and performing second-type channel access for the first PSFCH transmission within the COT.

Provided are a method by which a first device performs wireless communication and an apparatus supporting same. The method comprises the steps of: acquiring information related to a channel occupancy time (COT), the information related to the COT including information related to a condition for determining whether or not to share the COT; on the basis of whether or not the condition is satisfied, determining a type of channel access; and on the basis of the channel access, determining whether or not to perform sidelink (SL) transmission, wherein the SL transmission may include transmission of first sidelink control information (SCI) for scheduling of a physical sidelink shared channel (PSSCH) and second SCI, via a physical sidelink control channel (PSCCH), and transmission of the second SCI via the PSSCH.

A first wireless device receives a radio resource control (RRC) message comprising a first configuration parameter indicating a sidelink priority threshold value. The first wireless device receives, from a second wireless device, a sidelink control information (SCI) comprising a channel occupancy time (COT) sharing indication indicating a COT with a duration starting from a first slot. The COT is initiated using a first type of channel access procedure. The first wireless device determines simultaneous transmissions scheduled in a carrier and within the COT. The simultaneous transmissions comprise an uplink transmission on an uplink and a sidelink transmission, of a multi-consecutive slots transmission (MCSt), on a sidelink. The first wireless device determines to transmit the sidelink transmission based on a priority value of the sidelink transmission being smaller than the sidelink priority threshold value and transmits the sidelink transmission within the COT using a second type of channel access procedure.

Embodiments include methods for a first user equipment (UE) configured for sidelink (SL) communication with at least a second UE in a wireless network. Such methods include receiving, from a radio access network (RAN) node of the wireless network, a first message indicating that the first UE is permitted to initiate one or more channel occupancy time (COTs) for a channel in unlicensed spectrum and to share the one or more COTs with at least the second UE for SL communication. Such methods include initiating a first COT of the one or more COTs for the channel, as permitted by the first message; and receiving data from the second UE based on SL communication via the channel during the first COT. Other embodiments include complementary methods for a second UE and for a RAN node, as well as UEs and RAN nodes configured to perform such methods.

A wireless communication method for execution by a user equipment (UE). The UE performs channel occupancy time (COT) initiating to initiate a COT based on a channel access scheme and generates COT sharing information for sharing the COT to a second UE. The UE transmits the COT sharing information in a first SL burst to the second UE. The UE receives from the second UE a second SL burst within the shared COT.

The invention discloses a wireless radio frequency data monitoring and distribution platform system and method based on data analysis, and belongs to the technical field of wireless communication. Wireless radio frequency signal parameters are acquired, data processing is performed on the signal parameters, a signal evaluation model is constructed, and the signal parameters are imported into the signal evaluation model to evaluate the signal-to-noise ratio. Constructing a channel occupation and multipath time delay extension evaluation model, importing the channel occupation time and the power and time delay of the multipath channel into the channel occupation and multipath time delay extension evaluation model to evaluate the signal condition, and constructing an equipment interference model; the method comprises the following steps: importing signal parameters and position distances of field working equipment into an equipment interference model to evaluate the interference degree of the working equipment on a wireless radio frequency transmission signal, constructing an optimal frequency band scoring model, and importing a signal-to-noise ratio, a channel occupancy rate, multipath time delay extension and equipment interference conditions into the optimal frequency band scoring model to perform frequency band selection. And the reliability and the real-time performance of wireless communication in an industrial scene are improved.

A method of channel access adjustment for sidelink (SL) communication in a shared / unlicensed spectrum by a user equipment (UE) includes transmitting, by the UE, at least one physical sidelink shared channel (PSSCH) transmission in a reference duration for a latest channel occupancy initiated using Type 1 channel access procedures and performing, by the UE, a contention window adjustment operation based on at least one hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback corresponding to the at least one PSSCH transmission.

A wireless communication method. An initiating user equipment (UE) performs channel occupancy time (COT) initiating for a COT based on a channel access scheme and transmits sidelink data and sidelink control information within the COT. A responding UE receives the sidelink data and sidelink control information within the COT and performs a channel access scheme to use the shared COT. The responding UE transmits a sidelink hybrid automatic repeat request (HARQ) feedback in response to the sidelink data. The initiating receives the sidelink HARQ feedback.

Wireless communications systems and methods related to use of cyclic prefix (CP) extensions for channel occupancy time (COT) sharing among sidelink user equipment devices (UEs) are provided. A first UE detects a first sidelink transmission in a COT, the COT for sharing with multiple sidelink UEs including the first sidelink UE. The first UE may determine a CP extension length for transmitting a second sidelink transmission after the first sidelink transmission, where a gap duration between the first sidelink transmission and the second sidelink transmission satisfies a listen-before-talk (LBT) gap time threshold. The first UE may apply a CP extension having the CP extension length to the second sidelink transmission and transmit, to a second sidelink UE, the second sidelink transmission with the CP extension.

A wireless communication method for execution by a user equipment (UE). The UE receives channel occupancy time (COT) initiating information from a base station and performs COT initiating to initiate a COT based on a channel access scheme. The UE generates COT sharing information and transmitting the COT sharing information in a first SL burst to a second UE. The UE receives from the second UE a second SL burst within the shared COT.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may operate in an unlicensed spectrum, and may operate in a frame based equipment (FBE) mode or a load based equipment (LBE) mode. The UE may communicate with other UEs using sidelink communication links (e.g., without base station control) during a channel occupancy time (COT) and according to a fixed frame period (FFP) configuration or structure. To avoid transmission conflicts during COTs, a UE may obtain (e.g., receive) other UE FFP configurations from the other UEs, from a base station, or both. Additionally or alternatively, the UE may indicate a set of resources to other UEs that may be shared for a sidelink transmission. For example, each UE may be able to transmit sidelink communications during different portions of the set of resources so that conflicts may be avoided.

A transmission device of the present disclosure performs sidelink communication with a reception device using a shared spectrum. The transmission device includes a control unit. The control unit transmits at least one of a PSCCH (Physical Sidelink Control Channel) and a PSSCH (Physical Sidelink Shared Channel) to the reception device using a predetermined sidelink resource within a COT (Channel Occupancy Time) acquired by a predetermined COT acquisition device. The predetermined COT acquisition device is any one of a base station, the transmission device, the reception device, and a communication device.

Apparatus and methods are provided for COT sharing in sidelink unlicensed communication systems. In novel aspect, an COT initiating UE shares one or more SL resources within a COT to one or more responding UEs. In one embodiment, the responding UE is a target receiver of the COT initiating UE. In one embodiment the responding UE uses the shared resources for transmission that the COT initiating UE is one of the target receivers. In one embodiment, COT sharing information comprises COT time and frequency location information, shared COT starting offset information, remaining COT duration information, one or more resource block (RB) set(s) in the COT, channel access type, channel access priority type (CAPC) level, and ID information. In one embodiment, the COT sharing information is carried in a 1st-stage SCI, a 2nd-stage SCI, a combination of a 1st-stage SCI and 2nd-stage SCI, or a MAC-CE. In one embodiment, the responding UE performs an channel access before using the shared COT resource. The channel access type is (pre-) configured based on a transmission gap or indicated by the COT initiating UE.

Systems, apparatuses, methods, and computer-readable media are provided for wireless communication using an unlicensed spectrum. An access point (AP) operating in the unlicensed spectrum includes a processor circuitry, a transmitter, and a receiver. The processor circuitry is configured to perform a listen before talk (LBT) procedure using an LBT parameter and a maximum channel occupancy time (MCOT) that is compatible with another wireless protocol using the unlicensed spectrum. The processor circuitry is configured to divide a transport block (TB) into a plurality of code block groups (CBGs) for transmission over the unlicensed spectrum. The transmitter is configured to transmit the plurality of CBGs to a destination, and a receiver is configured to receive hybrid automatic repeat and request acknowledgment (HARQ-ACK) information corresponding to the transmitted plurality of CBGs. The processor circuitry is further configured to determine a HARQ-ACK assessment for the TB based on the HARQ-ACK information corresponding to the transmitted plurality of CBGs, and adjust a contention window size based on the HARQ-ACK assessment for the TB.

Provided is a method for contention-based access to a secondary channel. The method is applicable to a first wireless device, and includes: contending for access to the secondary channel in an idle state based on a secondary channel access mode upon receiving channel occupancy information interacted by a second wireless device on a primary channel, wherein the primary channel and the secondary channel are a group of bound channels.

A method of resource allocation and channel access in sidelink communication by a user equipment (UE) includes identifying, by the UE, one or more candidate reserved resources, wherein the UE is configured to share its channel occupancy time (COT) with the one or more candidate reserved resources, or the UE is configured to utilize a shared COT from the one or more candidate reserved resources.

A method of radio communicating between a radio device and a network node of a radio access network, RAN, using a temporal radio resource associated with a channel occupancy time, COT. The method is performed by the radio device or initiated by the radio device by at least one of: determining if a first COT is initiated by the radio device; determining if a second COT is initiated by the network node; and radio communicating with the network node in the temporal radio resource associated with the first COT or the second COT depending on the determinations, wherein determinations are based on information in a DCI message.

A wireless device receives configuration parameters indicating: a sidelink resource pool of a sidelink bandwidth part configured in a shared spectrum, one or more resource blocks for a physical sidelink feedback channel transmission via the sidelink resource pool, and a first common interlace index, among a plurality of common interlace indexes, configured for the PSFCH transmission via the sidelink resource pool. The wireless device determines multiple common RBs of a first common interlace corresponding to the first common interlace index. An index of each of the multiple common RBs is based on: an interlaced RB index corresponding to the first common interlace index, and a first common RB index indicating a starting RB of the sidelink BWP. The wireless device transmits, during a PSFCH slot, one or more sidelink transmissions via at least one RB of the one or more RBs, and via the multiple common RBs.

A user equipment (UE) may transmit a configured-grant uplink control information (CG-UCI) to a base station during a channel occupancy time (COT) initiated by the UE in a shared spectrum, the CG-UCI comprising COT sharing information, the COT sharing information indicating, at least, an index value corresponding to a combination of: an indication of an offset to a beginning of a downlink transmission opportunity during the COT; an indication of a duration of the downlink transmission opportunity during the COT; and an indication of a channel access priority class (CAPC) value used by the UE to initiate the COT. The base station may transmit a downlink transmission to the UE within the downlink transmission opportunity and in accordance with the COT sharing information in the transmitted CG-UCI. Apparatuses are also disclosed.

A user equipment (UE) is configured to share sub-channel resources from among available sidelink channel resources with second UEs. The device transmits a sidelink channel occupancy sharing indicator that enables at least two devices to transmit data utilizing available sidelink channel resources within a channel occupancy duration. The sidelink channel occupancy sharing indicator includes a value for a selected listen before talk (LBT) type from among multiple LBT types for channel sensing. The LBT type signals, to a second UE receiving the sidelink channel occupancy sharing indicator, which LBT procedure to utilize before accessing resources identified by the sharing indicator. The UE allocates the available sidelink channel resources to the at least two second UEs to enable multiple devices to cooperatively share available sidelink channel resources via non-overlapping time or frequency domain usage in order to achieve a channel occupancy threshold level of resource utilization in an unlicensed spectrum.

Embodiments of this application provide a communication method: A first terminal device sends first information to at least one second terminal device, to indicate the at least one second terminal device to perform feedback. The first terminal device receives a feedback of a third terminal device, where the third terminal device is a terminal device that is in the at least one second terminal device and that has performed feedback. The first terminal device sends first resource indication information, to indicate a first resource, where the first resource is for the third terminal device to perform transmission, and the first resource is included in a channel occupancy time COT preempted by the first terminal device. A UE 1 allocates a COT resource to a UE 2 that has performed feedback. This can reduce resource waste, avoid COT interruption, improve spectrum resource utilization and improve system transmission performance.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may transmit, in a first slot within a channel occupancy time (COT), a first communication; determine whether one or more transmission criteria are satisfied for transmission of a second communication in a second slot within the COT; and selectively transmit the second communication in the second slot within the COT based at least in part on a result of determining whether the one or more transmission criteria are satisfied. Numerous other aspects are provided.

A method for resource selection is provided. The method for resource selection includes: receiving channel occupancy time (COT) sharing information from a second UE; determining, according to at least one of the COT sharing information or a preset threshold, whether a first UE can share a COT indicated by the COT sharing information; and selecting, in a case where the first UE can share the COT, a transmission resource of the first UE from a time window that the first UE can use within the COT.

A wireless device selects, based on a sidelink (SL) selection window for SL resource selection, a first multi-slot resource from among a set comprising multi-slot candidate resources in a SL resource pool. The first multi-slot resource comprises a plurality of SL slots. The wireless device determines a random number, between zero and a value of a contention window, as an initial value of a counter for a type 1 channel access procedure. The wireless device senses, after a value of the counter is zero, a channel to be idle. The wireless device transmits, to a second wireless device and via the first multi-slot resource, a second stage SL control information (SCI) comprising an SCI format 2-A. The SCI format 2-A indicates a duration of a channel occupancy time (COT). The COT is initiated, by the wireless device, based on sensing the channel to be idle.

The invention relates to the technical field of wireless communication networks, in particular to a vehicle-mounted multi-device Bluetooth communication cooperative management system, which comprises a connection priority scheduling module, a dynamic channel allocation module, an interference suppression optimization module, a load balancing adjustment module and a frequency switching coordination module. According to the invention, through extracting the device connection state and the communication requirement, comparing the communication priority in real time, improving the connection scheduling efficiency, and dynamically adjusting the bandwidth and the power in combination with the load and the channel occupation, the channel is prevented from being occupied by a single device for a long time, the channel utilization rate is improved, the interference abnormal device combination is rapidly identified when the interference occurs, and the interference suppression is executed; the method is advantaged in that interruption caused by signal conflicts is reduced, flow redistribution is carried out on high-load equipment through load analysis, uneven communication pressure is alleviated, a frequency switching path is optimized, delay and interruption caused by unreasonable switching are reduced, stable connection, resource balance and interference suppression under multi-equipment concurrent communication are realized, and communication efficiency is improved.

A user device, UE, for a wireless communication network, like a 3rd Generation Partnership Project, 3GPP, network, is described. The UE is to perform a sidelink, SL, communication using a channel comprising resources from an unlicensed spectrum and is to occupy the channel within a channel occupancy time, COT. The UE is to receive one or more control messages, wherein at least one of the control messages is related to one or more upcoming SL transmissions by one or more network entities of the wireless communication network. The UE is to determine, using the one or more control messages, among the one or more network entities, at least one network entity having an upcoming transmission, and share the COT with the at least one network entity.

A wireless device transmits a multiple consecutive slots transmission (MCSt) via consecutive slots, wherein a quantity of the consecutive slots is based on a channel occupancy time (COT) duration of a COT.